Day 1 Areal Outline

Issued: 2026-08-22 01:04 UTC

Summary

There is a slight risk of tornadoes and a marginal risk of severe thunderstorms, including large hail and damaging winds, across parts of the central and eastern United States, as well as parts of the West, during the afternoon and evening of August 21, 2026. General thunderstorms are also expected across a wide area stretching from the Great Lakes and the Northeast to the Pacific Northwest.

Product Text

000 WUUS01 KWNS 220104 PTSDY1 DAY 1 CONVECTIVE OUTLOOK AREAL OUTLINE NWS STORM PREDICTION CENTER NORMAN OK 0802 PM CDT FRI AUG 21 2026 VALID TIME 220100Z - 221200Z PROBABILISTIC OUTLOOK POINTS DAY 1 ... TORNADO ... 0.02 41619112 42518991 42948937 43188858 42708771 41638771 40508815 40018893 39899003 40199100 40669154 41619112 0.02 40410099 40500204 40440339 41160368 42370358 42590299 42700236 42840142 42419992 42099912 41679861 40889862 40389974 40410099 && ... HAIL ... 0.05 43049992 42509736 41879620 40959453 40849309 40949176 41969105 42829056 44038971 44948867 45308783 45078715 43148732 41488708 40588755 39828838 39268952 39069222 38919329 38289564 38219822 38420008 38160062 38190240 38450321 38980356 39740348 40310335 41460382 42280384 42600343 42850307 42980207 43049992 0.05 32337819 33728140 34618236 35378239 36028171 36588005 37007790 36487518 0.15 40310248 40960344 42340343 42750202 42739999 42499878 41909735 41469634 40979589 40339572 39329635 39199695 39209805 39390002 39590099 40310248 0.15 41619109 42109049 42358994 42678934 42908878 42748780 41718751 41208753 40788783 40458830 39989008 40039078 40159119 40659147 41619109 CIG1 42809915 41849669 41449595 41019564 40369546 40029573 39529726 39330146 39880226 40870342 42060367 42470348 42900205 42809915 && ... WIND ... 0.05 41528620 40638677 40068751 39088868 38709032 39049222 38899330 38089428 37419542 37269644 37329731 37509957 37590170 37830255 38360341 39840376 41320401 41460407 42320386 42870310 42990192 43030000 42749760 41859615 40949450 40849316 40899187 41939113 42409086 42909051 44018978 44948869 45308785 45038696 44468638 42518570 41528620 0.05 28448009 28368074 28518101 28858124 30478181 30898211 30968251 29868839 29348962 29089078 29289200 29769329 29939427 30389496 30729531 30919540 31339535 31629496 31809407 31159208 31149195 31029043 31158976 31288899 32308807 32578525 33458367 34558293 35448228 36178130 36687899 36727781 36487516 0.05 39781570 40021696 40761729 42861780 43821712 44101617 44141424 43901212 43371164 40251203 39781258 39511348 39781570 0.15 41749107 42369013 42648948 42788913 42918878 42688751 41498711 41098740 40448827 39999005 40039076 40159119 40669146 41749107 0.15 42339928 41269692 40809605 40379571 39429586 38899613 38229711 38139757 38239865 38429963 38730091 40330343 40940372 42070374 42540306 42770142 42339928 CIG1 41109765 40189670 39319604 38579566 37959554 37629576 37519672 37549802 37729969 37790151 38070260 38610326 40060355 41860386 42310366 42910215 42940111 42789943 41879840 41109765 CIG1 39801571 40041694 40751728 42861778 43821712 44081619 44131426 43881213 43341167 40251203 39771262 39531350 39801571 && CATEGORICAL OUTLOOK POINTS DAY 1 ... CATEGORICAL ... SLGT 42540306 42750202 42739999 42499878 41469634 40979589 40379571 39429586 38899613 38229711 38139757 38239865 38730091 40330343 40940372 42070374 42540306 SLGT 41749107 42369013 42918878 42688751 41498711 41098740 40448827 39989008 40039078 40159119 40659147 41749107 MRGL 28448009 28368074 28518101 28858124 30478181 30898211 30968251 29868839 29348962 29089078 29289200 29769329 29939427 30389496 30729531 30919540 31339535 31629496 31809407 31159208 31029043 31288899 32308807 32578525 33458367 35378239 36028171 36588005 37007790 36487520 MRGL 42320386 42870310 42990192 43049992 42749760 40959452 40849311 40939184 44018978 44948869 45308785 45038696 44468638 42518570 41528620 40638677 39088868 38709032 39049222 38899330 38089428 37419542 37269644 37590170 37830255 38360341 41460407 42320386 MRGL 43821712 44101617 44141424 43901212 43371164 40251203 39781258 39511348 39781570 40021696 40761729 42861780 43821712 TSTM 43188140 42268174 40228265 39658279 39308264 39068215 39198108 39027675 38477450 38007321 99999999 32281691 33841712 34501703 35341665 35931626 36581625 37201656 38081845 38511871 39301884 39911887 43881843 44631732 45701404 45841240 45281091 44670917 44310837 43810769 43060717 42910584 43030511 43300232 43459987 43769826 44159774 44389749 44639700 44479576 43819508 43129459 42689382 42349274 42289184 42629128 43289071 44418970 45268950 45838987 45919167 45579376 45809541 46149618 47109625 47579616 48019675 48459759 48979853 49579941 99999999 28649497 29369577 30839677 32639902 33109996 33190133 33050368 32080655 31480749 99999999 37608713 37498851 37708991 38179074 38289131 38159231 37759364 37369396 36869407 36539380 36369320 35979244 35539208 35089202 34159248 33879228 33559202 33359152 33289107 33409057 33599028 34418970 34738908 34898837 34958772 35358719 36238686 37138666 37418663 37598688 37608713 99999999 49422034 48592046 47302056 45822048 43872056 43402060 43142094 43042134 43062188 43252218 44022233 45622225 46302248 46712329 47022408 47732445 48052430 48202382 48102313 47902296 47292320 47002288 47102235 47572213 49492272 && THERE IS A SLIGHT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 20 S CDR 65 NE AIA 10 N ANW 0 - ONL 25 SSW TQE 25 S OMA 20 NNW FNB 25 NNW TOP 30 WSW TOP 45 NNE ICT 15 ENE HUT 45 SSE RSL 55 N GCK 15 NW AKO 40 WSW SNY 15 NNW BFF 20 S CDR THERE IS A SLIGHT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 35 NW MLI 30 E DBQ 25 NNE JVL 15 ESE RAC 0 - VPZ 30 SW VPZ 30 N CMI 25 WNW SPI 25 ENE UIN 15 N UIN 20 WSW BRL 35 NW MLI THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 40 NE MLB 20 NNW MLB 20 E ORL 20 NNE ORL 10 WSW JAX 30 SE AYS 20 SSW AYS 55 S MOB 15 W BVE 35 S HUM 35 SSE 7R4 25 S LCH 15 W BPT 40 SE UTS 10 E UTS 15 NNE UTS 35 W LFK 30 NNW LFK 45 SSW SHV 20 SE ESF 10 SSE MCB 25 ESE PIB 40 E MEI 10 ESE AUO 40 SSW AHN 10 ESE AVL 30 NW HKY 35 NNW GSO 25 NNE AVC 55 ENE ECG THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 25 NE TOR 0 - CDR 75 SSW PHP 30 N ANW 15 SW YKN 40 NW LWD 30 S OXV 35 ESE OTM 25 ENE VOK 40 NW GRB 40 SSE IMT 50 S ESC 15 NNW MBL 20 NNW AZO 15 SSE SBN 15 NNE LAF 35 NNE SLO 0 - STL 15 N COU 20 NE SZL 60 SSE OJC 20 S CNU 40 NW BVO 40 NNE EHA 20 SSE LAA 25 NNE LHX 40 S TOR 25 NE TOR THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 50 WNW BOI 35 N BOI 45 N SUN 25 N IDA 25 ESE IDA 35 S SLC 30 N U24 55 SSW DPG 25 NE P68 40 S BAM 25 WNW BAM 20 N REO 50 WNW BOI GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 85 ENE MTC 60 N CLE 20 NE CMH 25 S CMH 25 WNW UNI 10 SSE UNI 20 ESE PKB 10 SSW BWI 70 S ACY 125 SE ACY ...CONT... 35 SSE SAN 20 ESE RAL 30 SSW DAG 35 NNE DAG 55 SSW DRA 15 WSW DRA 50 NW DRA 50 N BIH 70 S NFL 15 SSW NFL 20 SW LOL 30 NE BNO 30 ESE BKE 40 N SMN 10 SSE BTM 35 SSE BZN 15 NW COD 30 NW WRL 20 SE WRL 35 WNW CPR 25 WNW DGW 25 NE DGW 50 NE CDR 35 SW 9V9 10 W MHE 30 NNE MHE 40 SSW ATY 20 SSE ATY 35 W RWF 25 ENE OTG 40 SSW FRM 20 ENE FOD 25 SW ALO 30 NNW CID 30 WNW DBQ 25 W LNR 25 S CWA 25 NNE AUW 25 NW RHI 55 SW ASX 15 E STC 0 - AXN 50 SSW DTL 25 NW DTL 35 S TVF 20 ENE GFK 40 NNW GFK 60 NNE DVL 105 NNW DVL ...CONT... 45 SE LBX 25 NW LBX 30 NW CLL 40 ENE ABI 50 NNW ABI 45 SE LBB 35 NW HOB 20 NNW ELP 55 SSE DMN ...CONT... 10 SSE OWB 30 NNE PAH 30 E FAM 30 NNW FAM 25 ENE VIH 30 NNW TBN 40 NNW SGF 35 N UMN 10 W UMN 25 SSE UMN 0 - HRO 15 S FLP 30 WSW BVX 30 NNE LIT 30 W PBF 30 SW PBF 15 WSW LLQ 25 SSE LLQ 15 SSW GLH 25 ESE GLH 15 WNW GWO 10 WNW UOX 35 NNW TUP 50 NNE TUP 15 NNW MSL 50 NNE MSL 10 NW BNA 15 NW BWG 35 NNW BWG 20 ESE OWB 10 SSE OWB ...CONT... 75 NNW OMK 45 WNW OMK 20 WSW EAT 35 ENE DLS 40 SE RDM 65 SSE RDM 70 NNW LKV 65 NNE LMT 65 N LMT 70 NNE MFR 45 E EUG 15 E PDX 50 N PDX 25 SW OLM 10 WNW HQM 15 SSE UIL 15 ENE UIL 15 WNW CLM 15 E CLM 30 ESE CLM 25 NNW OLM 0 - OLM 25 S SEA 10 NE SEA 50 N BLI