Day 1 Areal Outline

Issued: 2026-08-27 12:40 UTC

Summary

Severe thunderstorms, including possible tornadoes, hail, and damaging winds, are expected across much of the central and southern United States through August 28. Various regions face marginal to slight risks of severe weather, while general thunderstorms are forecast across a broad area stretching from the Great Plains to the East Coast.

Product Text

000 WUUS01 KWNS 271240 PTSDY1 DAY 1 CONVECTIVE OUTLOOK AREAL OUTLINE NWS STORM PREDICTION CENTER NORMAN OK 0738 AM CDT THU AUG 27 2026 VALID TIME 271300Z - 281200Z PROBABILISTIC OUTLOOK POINTS DAY 1 ... TORNADO ... 0.02 45627106 43317205 41787274 40817335 39787410 38917571 39387767 40957721 42827556 43337507 45507302 && ... HAIL ... 0.05 44750314 43760030 42699878 40749810 38349872 37859991 38420096 39250129 40010191 40320274 40410335 40200377 39400370 38140402 36460401 36060426 35810527 37950548 38870561 40910562 44420429 44750314 0.05 45737108 42657220 40637317 39827375 39287445 37727731 37277881 36828074 36088344 36818429 38238329 40148035 42037826 43337650 45887254 0.15 39527752 40887741 42457601 43107512 43397421 43337350 42857294 41607316 40737364 40027445 39397530 39157602 39067665 39117736 39527752 0.15 40720189 41830242 42790286 43400280 43600210 43320087 42899999 42129951 41329915 40359899 39809926 39449972 39290056 40720189 CIG1 44160437 44410428 44490388 44520329 44480298 44140185 43560077 42599945 40939875 39679874 39309968 39180066 39960169 40760246 42540402 44160437 && ... WIND ... 0.05 39250128 40080189 40380280 40370328 40100365 39420367 37880370 36450379 35820414 35800528 38030548 38930560 40950556 42000514 44160433 44210422 44640299 43820060 43700027 42679885 40759814 38319872 37329900 37179997 37520088 38420096 39250128 0.05 39107399 37887663 36717812 35238071 34728211 34688342 35028491 35768522 36758505 37928412 38698300 39928097 43197716 44437525 45527380 46017316 99999999 47417021 44067074 43067113 42117167 40967229 40277260 0.05 40431507 41751450 42581378 43681200 43741106 42651080 41331090 40501109 39921133 39501210 39321360 39511453 40431507 0.05 49620871 48660822 47030770 45400757 45020794 44850870 45010987 44921109 44501248 44661318 45381382 46941316 49511247 0.05 29440177 30260121 30599983 30659727 30769320 30779239 30629192 30089153 29729116 29629083 29759039 29849005 29778961 29578893 29168850 99999999 28249514 28660105 0.15 44077308 43637268 43117256 42397265 41637289 41107316 40607348 39957405 39467452 38497665 38137882 38757928 41817803 43657572 44307434 44227358 44077308 CIG1 39600118 40340174 41220234 41970251 42660220 42890171 42960100 42880027 42569956 41519897 40929876 40439873 39969875 39549911 39299991 39230061 39600118 && CATEGORICAL OUTLOOK POINTS DAY 1 ... CATEGORICAL ... SLGT 41817803 43657572 44307434 44227358 44077308 43637268 43117256 42397265 41637289 40607348 39467452 38497665 38137882 38757928 41817803 SLGT 43400280 43600210 43320087 42899999 42129951 41329915 40359899 39809926 39449972 39290056 40720189 42790286 43400280 MRGL 28249518 28660099 99999999 29440177 30260121 30599983 30779239 30629192 30089153 29729116 29629083 29849005 29778961 29578893 29168850 MRGL 44420429 44750314 43760030 42699878 40749810 37329900 37179997 37520088 38420096 39250129 40010191 40320274 40370328 40100365 36450379 35820414 35800528 38870561 40910562 44420429 MRGL 47197024 44067074 43067113 40277260 99999999 39107399 37887663 36717812 35238071 34728211 34688342 35028491 35768522 36758505 37928412 39928097 43197716 44437525 45487385 MRGL 41751450 42581378 43681200 43741106 42651080 41331090 40501109 39921133 39501210 39321360 39511453 40431507 41751450 MRGL 49500865 48660822 47030770 45400757 45020794 44850870 45010987 44921109 44501248 44661318 45381382 46941316 49511247 TSTM 47616799 45626898 44616912 43356924 99999999 49350210 47610129 46360045 45779952 44989837 44189771 43249713 41109631 39119612 37449646 36689627 36299583 36139476 36039277 36029054 36448870 37588678 41038255 42528115 99999999 27219683 27229984 99999999 32261676 33401710 34321777 34691787 35181770 36041694 37371620 38811604 40531605 41631608 43291585 45711516 47731497 48441532 49031592 49401654 99999999 31841365 33721389 34321419 34761451 34891478 34831512 34591529 34111542 33121531 32421518 && THERE IS A SLIGHT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 30 E BFD 30 SSE ART 10 SW SLK 25 SW BTV 30 S BTV 15 ENE RUT 20 NW EEN 15 NNE BAF 25 SSW BDL 15 E JFK 0 - ACY 20 NW NHK 10 SSE SHD 30 ESE EKN 30 E BFD THERE IS A SLIGHT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 40 NNE CDR 40 SW PHP 35 NNW VTN 20 N ANW 30 NW BUB 30 S BUB 25 S EAR 40 NE HLC 0 - HLC 40 W HLC 20 NW IML 10 ESE CDR 40 NNE CDR THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 65 SSE LBX 50 S DRT ...CONT... 50 SSE 6R6 65 NNW DRT 0 - JCT 45 S ESF 30 N LFT 30 ESE LFT 30 WNW HUM 10 WNW HUM 15 SE MSY 35 NNW BVE 35 ENE BVE 55 ESE BVE THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 60 E GCC 50 N RAP 45 S PIR 15 NNW ONL 20 SE GRI 25 W P28 40 S DDC 30 SSW GCK 35 NNW GCK 25 ESE GLD 40 SSW IML 25 ENE AKO 15 NNW AKO 25 WSW AKO 35 W CAO 55 NW TCC 15 NW LVS 50 W COS 30 S LAR 60 E GCC THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 105 WNW CAR 35 NW PWM 15 W PSM 45 SE ISP ...CONT... 40 SE ACY 30 SSW NHK 0 - AVC 15 E CLT 15 SSE GSP 40 WNW AND 15 E CHA 15 SSW CSV 55 N CSV 25 ESE LEX 25 SW HLG 25 E ROC 40 SSW MSS 60 NE MSS THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 50 S TWF 0 - BYI 10 NNE IDA 20 WNW JAC 35 W BPI 10 ENE EVW 55 S EVW 35 NW PUC 25 ENE U24 70 NNW MLF 20 NE ELY 45 SE EKO 50 S TWF THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 85 NE HVR 70 E HVR 95 NNE BIL 50 NNW SHR 60 SSE BIL 30 NE COD 55 SSE LVM 15 N WEY 10 WSW MQM 45 SE SMN 20 N SMN 20 N 3DU 60 N CTB GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 50 N CAR 55 N BGR 20 SW BGR 55 ESE PWM ...CONT... 85 NNW MOT 0 - N60 30 SSE BIS 45 ENE MBG 35 S ABR 30 NNE MHE 25 NNE YKN 25 WSW OMA 25 W TOP 50 NNW BVO 15 WSW BVO 0 - TUL 35 S GMJ 20 SW FLP 15 NNE JBR 45 S PAH 25 ESE OWB 15 N MFD 60 WNW ERI ...CONT... 55 SE CRP 30 SW LRD ...CONT... 30 SW CZZ 45 SSE RAL 30 SE PMD 15 S EDW 20 NNE EDW 50 ENE NID 50 NNW DRA 50 S P68 25 SW EKO 25 SSE OWY 25 SE BOI 35 SE P69 20 ENE 3TH 60 N 3TH 100 NNW 3TH 130 NNE GEG ...CONT... 80 SE YUM 50 E BLH 40 SE EED 0 - EED 10 NW EED 30 W EED 40 WSW EED 55 NW BLH 25 NE IPL 35 SE IPL