Day 1 Areal Outline

Issued: 2026-08-13 16:34 UTC

Summary

Severe thunderstorms capable of producing large hail, damaging winds, and occasional tornadoes are expected across parts of the central and western United States on Thursday, August 13. Marginal to slight risks of these severe weather phenomena are forecast for much of the Midwest and Plains through the afternoon.

Product Text

000 WUUS01 KWNS 131634 PTSDY1 DAY 1 CONVECTIVE OUTLOOK AREAL OUTLINE NWS STORM PREDICTION CENTER NORMAN OK 1132 AM CDT THU AUG 13 2026 VALID TIME 131630Z - 141200Z PROBABILISTIC OUTLOOK POINTS DAY 1 ... TORNADO ... 0.02 38908487 39308812 40329169 40659259 41139301 41579295 42019243 42129179 41508891 40638621 39908441 39468430 38908487 && ... HAIL ... 0.05 42090404 41860286 41510176 41240020 41659843 42509660 42329589 41739551 41159507 40779431 41589296 42339282 42419112 42198937 40918569 39628296 38978231 38068187 37438208 36948261 36708329 36778412 38988914 39789087 40169310 39629456 38369678 37509837 37030112 36970279 37050322 37260396 38250480 38630498 39720548 41200546 41790538 42050460 42090404 0.05 42536969 43587201 44467333 45427393 && ... WIND ... 0.05 39451987 40631963 41621911 41811801 41471756 40941662 41241469 41391229 41371115 41031081 40091092 38661165 37231267 36221352 35741457 35821551 37041774 37601851 38331928 39451987 0.05 39840561 41210551 41810540 42090491 42120399 41880287 41510175 41270018 41659844 42079695 41949595 41659522 41729433 41929388 42769333 42829243 42268925 40768517 39648288 38828212 38148179 37488190 36898257 36618341 36668413 36958644 37998829 38918985 39539178 39829317 39569453 37829708 35549964 34450023 33590105 33420147 33570200 34800210 36390213 36870254 37200398 38080482 39840561 0.05 42526969 43597203 44477334 45427392 0.15 40479163 40819226 41049271 41619286 42069261 42189215 41528914 39908419 39238429 38938477 39328772 39588902 40109079 40479163 && CATEGORICAL OUTLOOK POINTS DAY 1 ... CATEGORICAL ... SLGT 42069261 42189215 41528914 39908419 39238429 38938477 39328772 39588902 40109079 41049271 41619286 42069261 MRGL 41810540 42090491 42120399 41880287 41510175 41270018 41669841 42509660 42329589 41789554 41659522 41729433 41929388 42769333 42829243 42268925 40768517 39648288 38828212 38148179 37488190 36898257 36618341 36668413 36958644 38918985 39539178 39829317 39569453 37829708 35549964 34450023 33590105 33420147 33570200 36390213 36870254 37200398 38080482 39840561 41810540 MRGL 40631963 41621911 41811801 40941662 41241469 41391229 41371115 41031081 40091092 38661165 37231267 36221352 35741457 35821551 37041774 37601851 38331928 39451987 40631963 MRGL 42526969 43597203 44467333 45427393 TSTM 25709764 26189719 26969714 27859691 28679667 29199617 29759483 29829393 29359330 99999999 40747066 41847248 43737648 44577730 99999999 49779890 47580050 46980089 46120233 44930336 44290313 43880266 43600144 43889991 44389650 44289360 44179013 43938802 43448648 42908580 42238473 40318081 39257921 37967815 36127750 35127729 33987744 99999999 29338841 29958983 30399050 30959055 32199013 33508990 35478977 37149000 37569057 37889132 38289311 38089424 37559569 36819728 35869819 34779890 33499956 31850032 30710077 29580114 28850119 99999999 32251584 33261608 34051669 35221814 35781878 36811986 37782066 38742120 39752179 40642276 40912323 41212347 41702354 42682327 43682286 44542275 45282289 46112318 47362389 48152414 48562435 48842494 && THERE IS A SLIGHT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 35 SSW ALO 30 SSE ALO 25 WNW MMO 0 - DAY 10 NE LUK 20 WSW LUK 25 WSW HUF 20 SSW DEC 25 ENE UIN 15 WSW OTM 25 NNE OXV 35 SSW ALO THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 35 NNE LAR 40 W TOR 10 ENE TOR 10 SSW AIA 50 SW MHN 30 ENE LBF 50 N GRI 15 WNW SUX 25 ESE SUX 15 SSW DNS 25 SSE DNS 35 WNW DSM 30 NNW DSM 25 S MCW 20 N ALO 10 WNW RFD 15 S FWA 25 S CMH 30 SSE UNI 20 SW CRW 40 WNW BLF 30 NNW TRI 50 SE LOZ 30 S LOZ 0 - BWG 10 E ALN 40 SW UIN 20 E CDJ 25 ENE FLV 20 ENE ICT 30 WNW CSM 0 - CDS 45 E LBB 25 SE LBB 10 WSW LBB 35 NE DHT 30 S SPD 20 ESE TAD 20 SW PUB 40 W DEN 35 NNE LAR THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 80 N RNO 75 ESE LKV 55 S REO 25 NNE BAM 50 NW ENV 20 NW OGD 10 NW EVW 20 SSE EVW 35 NNW PUC 55 WNW 4HV 40 SE CDC 60 S SGU 40 SE LAS 25 SW LAS 40 ESE BIH 20 NNW BIH 55 SE TVL 0 - RNO 80 N RNO THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 65 NNE HYA 15 ESE LEB 10 W BTV 55 NE MSS GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 20 SW BRO 25 NE BRO 60 SSE CRP 35 E CRP 20 SE VCT 30 N PSX 30 N GLS 10 SSE BPT 55 S LCH ...CONT... 45 SW ACK 10 SE BDL 30 SW ART 75 WNW ART ...CONT... 115 N DVL 55 NNE BIS 15 NNW BIS 15 NNW Y22 45 S 2WX 15 NNW RAP 25 ESE RAP 30 SSE PHP 30 WNW 9V9 15 ENE BKX 15 ENE MKT 20 NNE VOK 20 SW MTW 20 NW MKG 15 W GRR 15 WSW JXN 10 NW HLG 40 NE EKN 20 SE CHO 25 SSE RZZ 15 WNW EWN 35 SE ILM ...CONT... 60 E BVE 30 S ASD 30 NNW MSY 15 SSW MCB 10 SSW JAN 10 E GWO 30 NNE MEM 25 WSW CGI 15 SSW FAM 30 SE VIH 40 SE SZL 60 SSE OJC 15 SW CNU 10 WNW PNC 35 SSW END 25 ENE LTS 75 N ABI 35 NNE SJT 50 SSW SJT 20 NW DRT 40 SSW DRT ...CONT... 45 SSW IPL 25 SSE TRM 40 NW TRM 25 NNW EDW 30 NNE BFL 10 WNW FAT 35 NNW MER 20 NE SAC 35 SE RBL 45 NW RBL 45 E ACV 35 ENE ACV 35 E CEC 30 NW MFR 35 SSE EUG 30 SSE SLE 25 NNE SLE 35 E AST 25 N HQM 25 NE UIL 45 NNE UIL 65 NNW UIL