COVID-19 short-term forecasts Confirmed 2020-09-03


General information

  • Forecasts produced by Jennie Castle, Jurgen Doornik, and David Hendry, researchers at the University of Oxford. These are our forecasts, and should not be considered official forecasts from, or endorsed by, any of: University of Oxford, Oxford Martin School, Nuffield College, or Magdalen College.
  • These forecasts are short term time-series extrapolations of the data. They are not based on epidemiological modelling or simulations. All forecasts are uncertain: their success can only be determined afterwards. Many mitigation strategies are in place, which, if successful, invalidate our forecasts. An explanation of our methods is provided below.
  • A list of notes is below. The most recent note:
    [2020-07-01] Modified the short-term model to allow for (slowly changing) seasonality. Many countries show clear seasonality after the initial period, likely caused by institutional factors regarding data collection. This seasonality was also getting in the way of peak detection. As a consequence estimates of the peak date may have changed for countries with strong seasonality.
    Added forecasts of cumulative confirmed cases for lower tier local authorities of England. The data is available from 2020-07-02 including all tests (pillar one and two). Only authorities with more than 5 cases in the previous week are included.

Peak increase in estimated trend of Confirmed in Europe 2020-09-03

UKEUATBEBGBSCZDEDKESFIFRGRHRHUIEITNLPLPTROSESISKNOCH
Peak date04-0704-0203-2604-1507-2403-27 --03-2704-04 --04-0404-1208-23 -- --04-1003-2403-3108-2204-1008-0606-19 -- --03-2603-27
Peak daily increment 4728 29682 808 1470 238 280 5662 316 146 19307 227 1117 5643 1079 733 830 1232 1075 240 1137
Days from 100 to peak 36 71 18 38 126 14 25 26 22 43 164 27 30 25 160 28 144 105 19 22
Days from peak/2 to peak 24 24 13 32 125 12 14 25 22 24 164 21 20 19 155 23 135 99 18 17
Last total 340411 1973786 28372 86544 16775 12230 26452 248840 17374 488513 8200 320656 10998 11094 6923 29206 272912 72464 69129 59051 91256 84729 3032 4163 11120 43127
Last daily increment 1735 25325 403 633 158 112 679 1429 179 8959 39 6926 241 369 301 92 1397 601 612 418 1365 197 53 121 86 364
Last week 8767 126701 1782 2592 710 497 2675 6714 674 49227 158 32001 1198 1545 1412 628 7503 3333 3649 1977 6788 771 235 435 538 1781
Days since peak 149 154 161 141 41 160 160 152 152 144 11 146 163 156 12 146 28 76 161 160

Peak increase in estimated trend of Confirmed 2020-09-03

AustraliaBrazilCanadaChileColombiaIndiaIndonesiaIranMexicoPeruPhilippinesRussiaSouth AfricaTurkeyUSUS-AKUS-ALUS-ARUS-AZUS-CAUS-COUS-CTUS-DCUS-DEUS-FLUS-GAUS-HIUS-IAUS-IDUS-ILUS-INUS-KSUS-KYUS-LAUS-MAUS-MDUS-MEUS-MIUS-MNUS-MOUS-MSUS-MTUS-NCUS-NDUS-NEUS-NHUS-NJUS-NMUS-NVUS-NYUS-OHUS-OKUS-ORUS-PAUS-SCUS-SDUS-TNUS-TXUS-UTUS-VAUS-WAUS-WIUS-WVUS-WY
Peak date08-0308-0405-0306-0608-23 -- --04-0108-0108-0208-1705-0907-1604-1407-1907-2607-1608-0307-0407-2104-2404-2005-0108-1407-1708-0108-2908-2707-1705-12 -- -- --07-1904-2405-0605-2204-06 -- --07-2408-3107-18 --05-0105-0104-0807-2307-1904-0107-0307-2807-2404-0907-1608-2707-2707-1607-1008-0708-0107-23 --04-21
Peak daily increment 496 46393 1991 7363 14671 2860 6791 8342 4234 10917 12483 4816 67031 101 1805 749 3551 9242 729 1012 190 226 11222 3333 240 1744 536 2695 2160 3312 1017 48 1627 1273 139 1972 441 89 4272 286 1108 9495 1810 963 334 1624 1837 540 2139 9846 495 1412 1084 906 86
Days from 100 to peak 146 142 51 83 156 36 135 137 153 52 119 27 133 118 118 133 104 132 40 30 39 142 124 138 156 157 114 58 125 40 48 60 21 125 157 121 34 38 24 120 120 22 106 126 126 23 117 149 130 121 111 141 146 126 22
Days from peak/2 to peak 141 113 43 64 112 29 114 115 138 34 75 19 118 122 107 127 92 115 35 27 40 141 108 127 154 144 111 48 118 30 41 65 15 117 158 112 29 41 16 118 113 12 98 120 124 16 108 143 122 105 108 132 140 121 27
Last total 26136 4041638 132527 416501 641574 3936747 184268 380746 616894 657129 228403 1006923 633015 274943 6150016 5463 118601 62052 203952 726018 58267 53112 14135 17361 635930 258637 9177 67670 32924 239915 96854 44394 50885 150461 119382 110012 4617 109616 77916 80119 85116 7871 172201 12629 35313 7345 192668 24491 70223 437107 127112 60987 27336 141570 121696 14337 153310 645422 42648 123637 75569 77856 10855 3941
Last daily increment 87 43773 586 1762 8253 83341 3622 1994 5937 0 1963 4958 2420 1642 36506 102 381 896 1091 4737 268 111 58 102 3545 2663 211 1215 263 1347 1104 547 894 814 386 693 50 769 988 1327 751 180 1648 362 469 39 377 200 351 889 1345 884 261 1038 1193 334 1809 3567 360 1119 477 727 197 30
Last week 589 236835 3185 10529 51082 472775 18381 10835 31156 35132 18859 29193 12883 9428 236075 375 4878 3284 3294 28633 1514 721 284 557 21083 11817 1371 4858 1551 10483 5541 3344 4128 4405 1915 3348 184 3970 4823 7442 3822 808 9710 1519 2002 132 2025 768 2371 4340 6988 4748 1282 4789 5745 1820 8828 26068 1896 6059 2520 3875 1029 191
Days since peak 31 30 123 89 11 155 33 32 17 117 49 142 46 39 49 31 61 44 132 136 125 20 48 33 5 7 48 114 46 132 120 104 150 41 3 47 125 125 148 42 46 155 62 37 41 147 49 7 38 49 55 27 33 42 135

Confirmed count forecast Europe (bold red line in graphs) 2020-09-04 to 2020-09-10

DateUKEUATBEBGBSCZDEDKESFRGRHRHUIEITNLPLPTROSESISKNOCH
2020-09-03 340411 1973786 28372 86544 16775 12230 26452 248840 17374 488513 320656 10998 11094 6923 29206 272912 72464 69129 59051 91256 84729 3032 4163 11120 43127
2020-09-04 342300 1993000 28640 87250 16960 12240 26820 250700 17470 498100 324800 11220 11440 7157 29310 273700 72850 70150 59490 92590 85140 3078 4301 11210 43410
2020-09-05 344100 2011000 28900 87770 17020 12290 27330 251400 17560 509700 328700 11430 11790 7376 29410 274800 73290 70890 59890 93840 85140 3122 4426 11290 43670
2020-09-06 346100 2029000 29160 88140 17070 12340 27750 251800 17650 521900 332700 11650 12150 7604 29510 275800 73740 71440 60310 94730 85140 3166 4493 11380 43930
2020-09-07 347700 2047000 29420 88290 17150 12390 28320 253300 17740 534800 336400 11860 12520 7820 29610 276700 74200 71910 60700 95420 85420 3208 4573 11460 44180
2020-09-08 349200 2065000 29680 88560 17330 12440 28840 254500 17830 547900 340200 12080 12900 8037 29700 277400 74540 72470 61100 96450 85590 3251 4641 11540 44440
2020-09-09 351000 2083000 29940 88950 17480 12500 29630 255900 17920 561400 343900 12300 13300 8256 29800 278500 75150 73040 61500 97680 85630 3293 4730 11620 44690
2020-09-10 352400 2101000 30210 89510 17610 12550 30450 257200 18000 575300 347600 12520 13700 8478 29900 279700 75670 73690 61900 99010 85800 3336 4814 11700 44950

Confirmed count forecast (bold red line in graphs) 2020-09-04 to 2020-09-10

DateAustraliaBrazilCanadaChileColombiaIndiaIndonesiaIranMexicoPeruPhilippinesRussiaSouth AfricaTurkeyUSUS-AKUS-ALUS-ARUS-AZUS-CAUS-COUS-CTUS-DCUS-DEUS-FLUS-GAUS-HIUS-IAUS-IDUS-ILUS-INUS-KSUS-KYUS-LAUS-MAUS-MDUS-MIUS-MNUS-MOUS-MSUS-MTUS-NCUS-NDUS-NEUS-NJUS-NMUS-NVUS-NYUS-OHUS-OKUS-ORUS-PAUS-SCUS-SDUS-TNUS-TXUS-UTUS-VAUS-WAUS-WIUS-WV
2020-09-03 26136 4041638 132527 416501 641574 3936747 184268 380746 616894 657129 228403 1006923 633015 274943 6150016 5463 118601 62052 203952 726018 58267 53112 14135 17361 635930 258637 9177 67670 32924 239915 96854 44394 50885 150461 119382 110012 109616 77916 80119 85116 7871 172201 12629 35313 192668 24491 70223 437107 127112 60987 27336 141570 121696 14337 153310 645422 42648 123637 75569 77856 10855
2020-09-04 26230 4078000 132900 418100 651000 4047000 188500 382500 622500 674200 232200 1012000 638000 276400 6200000 5564 119500 62750 204800 731200 58630 53220 14180 17450 640900 262100 9410 68930 33200 242300 97700 45280 51320 151200 119800 110500 110300 78870 81900 86100 7925 173200 12960 35610 193000 24610 70660 437800 127700 61700 27650 142000 122500 14700 154700 650100 42940 124500 76010 78730 11090
2020-09-05 26320 4118000 133300 420000 660300 4170000 192800 384100 628100 680200 235800 1016000 640200 277900 6243000 5648 120800 63370 205300 736400 58940 53330 14230 17530 645700 264100 9720 70100 33460 244200 98600 46160 52110 151200 120200 111000 110900 80470 83780 86860 8102 175400 13300 35880 193300 24730 71100 438400 128900 62380 27890 142700 123300 15070 156100 654700 43280 125400 76440 79520 11360
2020-09-06 26410 4135000 133700 421800 669600 4287000 197000 385700 631700 689200 239300 1021000 642300 279300 6275000 5703 121600 63790 205600 741500 59120 53440 14280 17610 650400 265100 9940 71250 33730 246000 99500 47040 52380 152400 120300 111500 111600 81960 85480 87360 8186 176600 13640 36160 193600 24850 71520 439000 129700 63070 28100 143300 124100 15390 157400 659300 43600 126200 76860 79990 11610
2020-09-07 26490 4169000 134100 423400 678900 4398000 201400 387300 635000 696600 242900 1025000 644100 280800 6309000 5744 122200 64090 205700 746600 59290 53550 14320 17690 655100 266600 10080 72370 33990 247500 100300 47960 52860 152700 120900 111900 112300 83280 87010 87600 8257 177600 13980 36420 193900 24970 71960 439600 130500 63730 28250 143800 124900 15640 158700 663900 43790 127100 77290 80270 11860
2020-09-08 26580 4212000 134500 424700 688300 4521000 205900 388900 640900 701300 246400 1030000 645500 282200 6347000 5779 123000 64390 206300 751600 59630 53660 14370 17760 659700 268900 10250 73500 34250 248900 101200 48900 53560 153300 120900 112400 112900 84450 88670 88290 8350 179300 14330 36680 194200 25090 72390 440200 131700 64400 28460 144500 125600 15890 160000 668500 44030 127900 77710 81030 12180
2020-09-09 26660 4256000 134900 426000 697700 4660000 210400 390400 645500 705900 250000 1034000 647600 283600 6383000 5837 123300 64930 206600 756800 59820 53770 14410 17840 664400 270600 10580 74630 34510 250900 102100 49850 54350 154100 121100 112900 113600 85860 90660 89070 8522 180500 14680 36940 194500 25210 72830 440800 132800 65080 28570 145300 126400 16140 161400 673100 44340 128800 78140 81630 12460
2020-09-10 26750 4299000 135400 427700 707200 4800000 215000 392000 651300 708600 253600 1039000 649800 285100 6418000 5926 123600 65710 207500 761900 60100 53890 14460 17920 669100 273100 10820 75770 34770 252200 102900 50830 55160 154900 121100 113400 114300 87670 92750 89680 8678 182100 15040 37210 194800 25330 73270 441400 134000 65750 28820 146200 127200 16480 162700 677800 44670 129600 78560 82330 12710

Confirmed count average forecast Europe (bold black line in graphs) 2020-09-04 to 2020-09-10

DateUKEUATBEBGBSCZDEDKESFRGRHRHUIEITNLPLPTROSESISKNOCH
2020-09-03 340411 1973786 28372 86544 16775 12230 26452 248840 17374 488513 320656 10998 11094 6923 29206 272912 72464 69129 59051 91256 84729 3032 4163 11120 43127
2020-09-04 341000 1982000 28550 86910 16880 12200 26790 249700 17420 498600 323100 11190 11380 7012 29280 273500 72740 69820 59220 92270 84750 3046 4217 11150 43270
2020-09-05 342000 1993000 28830 87350 16970 12250 27240 250100 17480 509900 325500 11390 11710 7123 29370 274000 73220 70530 59470 93420 84770 3071 4298 11200 43470
2020-09-06 343200 2003000 29040 87730 17030 12290 27650 250400 17560 521300 329400 11600 12040 7274 29470 274600 73680 71120 59730 94410 84780 3099 4363 11260 43660
2020-09-07 344300 2014000 29290 88020 17120 12320 28090 251100 17630 536300 332600 11800 12390 7472 29570 275100 74150 71660 59970 95300 84910 3127 4430 11330 43850
2020-09-08 345300 2024000 29550 88350 17280 12370 28630 251700 17700 549200 335600 12010 12760 7653 29670 275500 74540 72280 60210 96370 85020 3156 4498 11390 44040
2020-09-09 346300 2034000 29810 88810 17410 12370 29260 252400 17780 562500 337900 12240 13150 7850 29780 276000 75060 72950 60460 97570 85130 3186 4562 11460 44250
2020-09-10 347300 2043000 30110 89270 17530 12550 29750 253200 17870 576200 341000 12480 13550 8032 29880 276600 75520 73710 60720 98820 85260 3217 4632 11530 44440

Confirmed count average forecast (bold black line in graphs) 2020-09-04 to 2020-09-10

DateAustraliaBrazilCanadaChileColombiaIndiaIndonesiaIranMexicoPeruPhilippinesRussiaSouth AfricaTurkeyUSUS-AKUS-ALUS-ARUS-AZUS-CAUS-COUS-CTUS-DCUS-DEUS-FLUS-GAUS-HIUS-IAUS-IDUS-ILUS-INUS-KSUS-KYUS-LAUS-MAUS-MDUS-MIUS-MNUS-MOUS-MSUS-MTUS-NCUS-NDUS-NEUS-NJUS-NMUS-NVUS-NYUS-OHUS-OKUS-ORUS-PAUS-SCUS-SDUS-TNUS-TXUS-UTUS-VAUS-WAUS-WIUS-WV
2020-09-03 26136 4041638 132527 416501 641574 3936747 184268 380746 616894 657129 228403 1006923 633015 274943 6150016 5463 118601 62052 203952 726018 58267 53112 14135 17361 635930 258637 9177 67670 32924 239915 96854 44394 50885 150461 119382 110012 109616 77916 80119 85116 7871 172201 12629 35313 192668 24491 70223 437107 127112 60987 27336 141570 121696 14337 153310 645422 42648 123637 75569 77856 10855
2020-09-04 26170 4069000 132700 418000 648500 4041000 188400 382000 621200 663300 231200 1009000 634400 276100 6173000 5506 119300 62560 204100 729000 58480 53220 14170 17390 638200 260400 9400 68500 33080 241800 97700 45240 51150 150800 119500 110200 110100 79100 81720 85650 7926 173500 12920 35420 192800 24560 70630 437400 127600 61380 27540 141700 122200 14580 154200 649200 42910 124300 75830 78570 10980
2020-09-05 26210 4107000 133000 419800 656900 4162000 193300 383200 626500 670500 234700 1012000 636200 277600 6201000 5570 120300 63180 204400 732100 58740 53330 14220 17430 640800 262500 9680 69300 33260 243700 98600 46160 51850 150900 119700 110700 110700 80660 83550 86320 8085 175700 13330 35640 193100 24670 71080 438000 128700 62060 27750 142300 123100 14890 155500 654200 43220 125200 76220 79370 11200
2020-09-06 26260 4123000 133300 421700 665500 4284000 197900 384300 630500 678100 238200 1014000 638100 279000 6218000 5631 121200 63660 204700 735200 58930 53450 14260 17470 643600 263700 9900 70130 33450 245400 99500 46980 52310 151900 119800 111100 111400 82250 85370 86890 8173 176900 13640 35900 193400 24790 71490 438600 129300 62710 27960 142800 123900 15190 156800 657700 43530 126000 76530 79820 11410
2020-09-07 26300 4159000 133700 423200 673800 4404000 202300 385400 634300 685500 241800 1016000 639800 280400 6237000 5691 121800 64060 205000 738300 59120 53580 14290 17510 646300 265200 10090 70910 33650 247100 100400 48060 52880 152100 120000 111500 112000 83700 87200 87310 8240 178000 13840 36170 193700 24880 71890 439200 130000 63350 28150 143400 124600 15440 158100 661200 43770 126900 76800 80070 11600
2020-09-08 26350 4201000 134000 424600 682600 4523000 206700 386500 639800 692600 245300 1019000 641600 281900 6258000 5750 122500 64480 205400 741400 59430 53700 14340 17560 649700 267500 10290 71740 33870 248600 101300 48970 53540 152600 120100 111900 112700 84980 89060 87990 8344 179600 14200 36440 194000 24970 72300 439800 130900 63970 28350 144000 125400 15670 159400 666500 44030 127800 77070 80710 11840
2020-09-09 26400 4243000 134400 425900 691700 4659000 211400 387600 644800 699800 248900 1021000 643900 283300 6279000 5813 123100 65080 205800 744600 59640 53820 14360 17610 652800 269800 10580 72690 34100 250600 102100 50130 54220 153300 120200 112300 113300 86380 91030 88780 8504 180700 14550 36700 194200 25120 72650 440400 131900 64640 28540 144700 126100 15920 160700 671000 44340 128600 77340 81330 12040
2020-09-10 26450 4285000 134700 427500 701600 4794000 216300 388700 650100 706900 252600 1023000 646200 284800 6298000 5881 123700 65720 206300 747700 59910 53950 14410 17660 655900 272200 10860 73630 34320 252300 103100 51180 54910 153900 120300 112700 114000 88130 93100 89430 8650 182600 15020 36990 194500 25280 73080 441000 132800 65320 28770 145300 126900 16270 162100 674600 44650 129500 77670 82070 12250

Confirmed count scenario forecast (bold purple line in graphs) 2020-09-04 to 2020-09-12

DateUKEUATBEBGBSCZDEDKESFRGRHRHUIEITNLPLPTROSESISKNOCHAustraliaBrazilCanadaChileColombiaIndiaIndonesiaIranMexicoPeruPhilippinesRussiaSouth AfricaTurkeyUSUS-AKUS-ALUS-ARUS-AZUS-CAUS-COUS-CTUS-DCUS-DEUS-FLUS-GAUS-HIUS-IAUS-IDUS-ILUS-INUS-KSUS-KYUS-LAUS-MAUS-MDUS-MIUS-MNUS-MOUS-MSUS-MTUS-NCUS-NDUS-NEUS-NJUS-NMUS-NVUS-NYUS-OHUS-OKUS-ORUS-PAUS-SCUS-SDUS-TNUS-TXUS-UTUS-VAUS-WAUS-WIUS-WV
2020-09-03 340411 1973786 28372 86544 16775 12230 26452 248840 17374 488513 320656 10998 11094 6923 29206 272912 72464 69129 59051 91256 84729 3032 4163 11120 43127 26136 4041638 132527 416501 641574 3936747 184268 380746 616894 657129 228403 1006923 633015 274943 6150016 5463 118601 62052 203952 726018 58267 53112 14135 17361 635930 258637 9177 67670 32924 239915 96854 44394 50885 150461 119382 110012 109616 77916 80119 85116 7871 172201 12629 35313 192668 24491 70223 437107 127112 60987 27336 141570 121696 14337 153310 645422 42648 123637 75569 77856 10855
2020-09-04 341800 1997000 28550 86980 16820 12320 26820 251300 17490 499500 325300 11190 11440 7043 29370 274600 73270 69750 59380 92070 84810 3083 4254 11180 43480 26170 4063000 132800 418200 648600 4019000 188300 382800 620700 670400 232700 1011000 634900 276700 6178000 5497 119600 62470 204200 729300 58470 53250 14170 17380 637700 260200 9390 68770 33110 241900 98700 45470 51680 150700 119700 110400 110400 79190 81790 85580 7986 173300 12890 35420 193000 24590 70570 437900 127400 61250 27500 142100 122100 14710 153800 649300 42840 126200 75960 78190 11010
2020-09-05 343300 2029000 28730 87420 16880 12320 27330 251600 17590 508900 328100 11370 11720 7315 29470 275900 73930 70260 59700 93020 84870 3132 4334 11280 43570 26210 4095000 133100 419700 654600 4097000 191400 384800 624600 675900 235400 1015000 636900 278300 6207000 5540 120300 62910 204500 732700 58700 53410 14210 17420 640000 261600 9600 69740 33300 243500 99100 46190 52310 151100 120300 110800 111300 79790 83050 86050 8113 174400 13170 35700 193300 24690 70880 438900 128200 61800 27660 142900 123000 15030 154800 652900 43080 127300 76330 78650 11110
2020-09-06 344600 2046000 28910 87960 16960 12320 27810 251800 17700 518200 332600 11550 11940 7492 29580 277600 74540 70750 60040 93800 84910 3168 4420 11400 43760 26250 4124000 133500 421200 659700 4174000 194900 386500 628200 680000 238100 1019000 638500 280100 6233000 5590 120900 63300 204700 735500 58880 53560 14260 17460 642500 263000 9800 70660 33460 245200 100900 47060 53130 151500 120300 111200 112100 81020 84600 86530 8221 175500 13450 35980 193600 24780 71140 439500 129000 62260 27800 143600 123600 15310 155800 655800 43280 128800 76660 78880 11310
2020-09-07 345900 2060000 29070 88480 17040 12320 28220 252500 17820 527800 336600 11730 12210 7730 29670 278900 75330 71190 60400 94550 84950 3224 4495 11530 44000 26290 4149000 133800 422600 665200 4252000 197800 388500 631300 685600 240700 1024000 639800 281700 6256000 5629 121500 63720 204900 738200 59120 53730 14300 17500 644400 264000 9970 71710 33520 246900 102700 47760 53760 151800 120300 111500 112700 82260 85980 86880 8350 176300 13690 36260 193900 24850 71440 440100 129500 62670 27930 144400 124100 15620 156500 658600 43470 130100 76960 79260 11460
2020-09-08 347000 2082000 29230 88970 17100 12320 28760 252900 17940 539700 340100 11910 12550 7980 29700 280100 75780 71390 60720 95290 84980 3269 4587 11670 44200 26320 4173000 134200 423900 669400 4348000 201700 390400 634400 689400 243000 1028000 641000 283500 6277000 5669 122000 64110 205200 740600 59330 53900 14330 17530 645700 265300 10180 73150 33710 248400 103000 48570 54680 152200 120300 111800 113500 82540 87440 87230 8505 177400 13980 36640 194200 24930 71600 440600 130000 63180 28070 145100 124800 15940 157400 661200 43640 130700 77230 79540 11670
2020-09-09 347600 2093000 29360 89530 17150 12320 29240 253000 18060 547500 345900 12060 12770 8148 29770 281500 76250 71650 60970 96070 85010 3324 4663 11780 44270 26350 4197000 134500 425300 674500 4414000 204100 392700 637000 693300 245000 1031000 642100 285500 6293000 5696 122400 64430 205400 743100 59400 54070 14360 17570 646500 266300 10340 74190 33820 250000 103800 49320 55410 152500 120400 112000 114000 83270 88890 87550 8600 177800 14170 36820 194500 25000 71820 441200 130500 63530 28170 145700 125400 16150 158200 664000 43810 131000 77520 79800 11880
2020-09-10 348900 2101000 29490 90150 17210 12320 29640 253100 18170 558000 351600 12190 13070 8467 29830 282600 76840 71830 61220 96710 85040 3367 4737 11920 44310 26380 4215000 134700 426900 679000 4492000 207200 392700 639600 697300 247200 1034000 643200 286700 6310000 5730 122800 64720 205500 745500 59500 54250 14390 17600 646500 267500 10490 75270 33900 251500 105300 50000 56030 152700 120400 112200 114500 83540 90060 87860 8751 178500 14410 36890 194900 25060 71940 441700 130900 63890 28240 146500 125800 16570 158800 666200 43980 131500 77760 80090 12020
2020-09-11 349300 2109000 29550 90600 17250 12320 30000 253300 18330 565000 354600 12340 13320 8684 29880 283800 77480 72010 61490 97140 85070 3405 4806 12030 44340 26400 4235000 134900 428100 682800 4562000 209700 392700 641900 701400 249000 1037000 644400 287900 6327000 5742 123200 64980 205600 747200 59780 54410 14420 17640 647200 268400 10680 75910 33970 252800 106600 50670 56630 153000 120400 112500 114900 84820 91290 88130 8870 178900 14640 37080 195200 25120 72010 442200 130900 64150 28340 147300 126300 16850 159500 667500 44080 132100 77960 80470 12190
2020-09-12 350300 2117000 29660 91120 17290 12320 30470 253300 18480 573200 356700 12490 13590 8910 29940 285100 78250 72090 61700 97700 85080 3458 4883 12100 44430 26430 4251000 135000 429500 687600 4608000 213400 392700 644000 704900 250000 1039000 645500 288600 6345000 5763 123500 65240 205800 749300 60000 54590 14460 17670 648600 269200 10810 77100 34010 254100 107600 51330 57170 153200 120400 112500 115400 85450 92690 88370 8969 179400 14830 37250 195600 25180 72130 442700 131000 64410 28440 148100 126800 17160 159900 669600 44170 132100 78170 80750 12370

Further information

  • We believe these forecasts fill a useful gap in the short run. They give an indication of what is likely to happen in the next few days, removing some aspect of surprise. Moreover, a noticeable drop in comparison to the extrapolations could be an indication that the implemented policies are having some impact. It is difficult to understand exponential growth. We hope that these forecasts may help to convince viewers to adhere to the policies implemented by their respective governments, and keep all arguments factual and measured.
  • We use the data repository for the 2019 Novel Coronavirus Visual Dashboard operated by the Johns Hopkins University Center for Systems Science and Engineering. This is updated daily, but we tend to update our forecasts only every other day.
    US state data as of 2020-03-28 is courtesy of the New York Times.
  • We can only provide forecasts of what is measured. If confirmed cases are an underestimate of actual cases, then our forecasts will also be underestimates. No other epidemiological data is used. Data definition and collection differs between countries and may change over time.
  • We will update the methodology as we learn what is happening in the next few days or weeks. Once the number of cases levels off, there is no need to provide these forecasts anymore.
  • Countries where the counts are very low or stable have been omitted.
  • The graphs have dates on the horizontal axis (yyyy-mm-dd) and cumulative counts on the vertical axis. They show
    1. bold dark grey line (with circles): observed counts (Johns Hopkins CSSE);
    2. many light grey lines (with open circles): forecasts using different model settings and starting up to four periods back;
    3. red line (with open circles): single forecasts path using default model settings;
    4. black line (with crosses): average of all forecasts, recentered on the last observation;
    5. thin green lines: some indication of uncertainty around the red forecasts, but we do not know how reliable that is.
    Both the red line forecasts and the black lines are also given in the tables above. These forecasts differ, we are currently inclined to use the average forecasts.
  • The forecasts are constructed as follows:
    1. An overall `trend' is extracted by taking a window of the data at a time. In each window we draw `straight lines' which are selected using an automatic econometric procedure (`machine learning'). All straight lines are collected and averaged, giving the trend.
    2. Forecasts are made using the estimated trend, but we note that this must be done carefully, because simply extrapolating the flexible insample trend would lead to wildly fluctuating forecast. We use the `Cardt' method, which has been found to work well in other settings.
    3. Residuals from the trend are also forecast, and combined with trend forecasts into an overall forecast.
  • Scenario forecasts are constructed very differently: smooth versions of the Chinese experience are matched at different lag lengths with the path of each country. This probably works best from the peak, or the slowdown just before (but we include it for the UK nonetheless).
  • The forecast evaluation shows past forecasts, together with the outcomes (in the grey line with circles).
  • EU-BS is Estonia, Latvia, and Lithuania together.
  • This paper describes the methodology and gives further references. Also available as Nuffield Economics Discussion Paper 2020-W06. Still preliminary is the documentation of the medium term forecasts.

Recent changes and notes

[2020-07-01] Modified the short-term model to allow for (slowly changing) seasonality. Many countries show clear seasonality after the initial period, likely caused by institutional factors regarding data collection. This seasonality was also getting in the way of peak detection. As a consequence estimates of the peak date may have changed for countries with strong seasonality.
Added forecasts of cumulative confirmed cases for lower tier local authorities of England. The data is available from 2020-07-02 including all tests (pillar one and two). Only authorities with more than 5 cases in the previous week are included.
[2020-06-29] Tables in April included the world, but not the world as we know it (double counting China and the US). So removed the world from those old tables.
Why short-term forecasts can be better than models for predicting how pandemics evolve just appeared at The Conversation.
Thursday 2 July webinar at the FGV EESP - São Paolo School of Economics. This starts at 16:00 UK time (UTC+01:00) and streamed here.
[2020-06-24] Research presentation on short-term COVID-19 forecasting on 26 June (14:00 UK time) at the Quarterly Forecasting Forum of the IIF UK Chapter.
[2020-06-06] Removed Brazil from yesterday's forecasts (only; last observation 2020-06-05).
[2020-06-04] Data issues with confirmed cases for France.
Added an appendix to the short term paper with further forecast comparisons for European and Latin American countries.
Both Sweden and Iran have lost their peak in confirmed cases. For Sweden the previous peak was on 24 April (daily peak of 656 cases), for Iran it was on 31 March (peak of 3116). For Iran this looks like a second wave, with increasing daily counts for the last four weeks. For Sweden this is a sudden jump in confirmed cases in the last two days, compared to a fairly steady weekly pattern over the previous six weeks.
[2020-05-20] Problem with UK confirmed cases: negative daily count. This makes the forecasts temporarily unreliable.
Updated the second paper.
[2020-05-18] Minor fixes to the improved version of scenario forecasting, backported to 2020-05-13.
[2020-05-13] We now omit countries with fewer than 200 confirmed cases in the last week (25 for deaths).
The short-term paper has some small updates, including further comparisons with other models.
Data for Ecuador are not reliable enough for forecasting.
Switched to an improved version of scenario forecasting.
[2020-05-06] The New York Times is in the process of redefining its US state data. Unfortunately, at the moment only the last observation has changed (e.g New York deaths jumped from 19645 on 2020-05-05 to 25956 a day later). This means the data is currently useless; however it does bring it close to the Johns Hopkins/CSSE count (25626 on 2020-05-06). The aggregate US count is based on JH/CSSE so unaffected. We now use Johns Hopkins/CSSE US state data, including all states with sufficient counts. So the new forecasts cannot be compared to those previously.
A minor change is that we show the graph without scenario forecast if no peak has been detected yet.
[2020-04-29] See our blog entry at the International Institute of Forecasters.
US history of death counts revised in Johns Hopkins/CSSE data.
UK death counts have been revised to include the deaths in care homes. In the Johns Hopkins/CSSE data set, which we use, the entire history has been revised. So forecasts made up to 2020-04-29 cannot be compared to later outcomes. In the ECDC data set only the last observation has changed, causing a jump in the series.
[2020-04-27] Our short-term COVID-19 forecasting paper is now available as Nuffield Economics Discussion Paper 2020-W06.
A small adjustment has been made to the scenario forecast methodology, and will be documented shortly.
[2020-04-24] A summary of our work on short-term COVID-19 forecasting appeared as a voxeu.
[2020-04-17] Bird and Nielsen look into nowcasting death counts in England.
[2020-04-16] Added scenario forecasts to all graphs now. This would now be the preferred forecast for most.
This is the first time with a peak in confirmed UK cases (also for deaths, but this is uncertain because it is at the same date).
[2020-04-10] Updated documentation with better description of short-term estimates and peak determination.
[2020-04-09] Added table with estimated peak dates (if happened) and dates to and since the peak. Note that this can be a local peak, and subsequent re-acceleration (or data revisions) can result in a new peak later.
[2020-04-08] Minor correction to peak estimates. Added table with scenario forecasts.
[2020-04-06] Added a post hoc estimate of the peak number of cases. This needs at least three confirmed observations (four for deaths) after the event. It is based on the averaged smooth trend, and can change later or be a local peak. It is marked with a vertical line with the date label, or a date with left arrow in the bottom left corner of the graph. This is backported to 2020-04-04.
[2020-04-02] Now including more US States, based on New York Times data.
[2020-03-31] Scenario forecasts, based on what happened in China earlier this year, are presented for several countries (line marked with x). Created more plausible 90% confidence bands (dotted line in same colour).
[2020-03-26] Scenario forecasts that are based on what happened in China earlier this year, only for Italy.
[2020-03-24] Our forecasts are starting to overestimate in some cases. This was always expected to happen when the increase starts to slow down. Scenario forecasts that are based on what happened in China earlier this year, but only for Italy and Spain sofar.

Initial visual evaluation of forecasts of Confirmed