Day 1 Areal Outline

Issued: 2026-08-17 01:01 UTC

Summary

Severe thunderstorms, including potential tornadoes, hail, and damaging winds, are expected across much of the central and eastern United States on Sunday. Risk levels range from marginal to slight for much of the affected area.

Product Text

000 WUUS01 KWNS 170101 PTSDY1 DAY 1 CONVECTIVE OUTLOOK AREAL OUTLINE NWS STORM PREDICTION CENTER NORMAN OK 0759 PM CDT SUN AUG 16 2026 VALID TIME 170100Z - 171200Z PROBABILISTIC OUTLOOK POINTS DAY 1 ... TORNADO ... 0.02 37007775 37138005 37338188 37498233 37778227 38138191 38228119 38047960 37787765 37557689 37167691 37057722 37007775 && ... HAIL ... 0.05 37430249 37390290 37600337 38040364 39430391 40900391 43160323 43810292 44070232 44000153 43660098 43200051 42610036 41470051 40330075 39070088 38230112 37670157 37430249 && ... WIND ... 0.05 35130255 35070324 35210389 35530444 36110464 37160452 40290426 41790394 43430357 44040321 44240274 44130220 43700117 43160026 42309994 41490003 40490028 38760057 37780029 36760026 35920064 35630110 35420161 35310204 35130255 0.05 35477480 35507602 35907934 36388177 36778277 37298544 37448907 37619110 37789173 38019195 38369199 38829195 39269156 39389092 39308855 39108560 39098279 39388146 39428045 39117868 38807703 38657555 38387432 0.15 36327500 36557745 36707943 37028124 37148173 37278246 37358282 37598318 37808317 37948297 38038257 38118220 38358159 38638100 38698053 38517973 38177831 37947704 37777632 37467474 0.15 38050232 37940264 38070304 38460343 39200370 40110378 40810369 41540355 41740341 41830300 41790241 41580213 41320209 40780203 39960200 39320188 38780187 38300191 38050232 && CATEGORICAL OUTLOOK POINTS DAY 1 ... CATEGORICAL ... SLGT 36337510 36707943 37028124 37358282 37598318 37808317 37948297 38118220 38638100 38698053 37487485 SLGT 41540355 41740341 41830300 41790241 41580213 39320188 38300191 37940264 38070304 38460343 39200370 40110378 41540355 MRGL 35477484 35507602 35907934 36388177 36778277 37298544 37448907 37619110 37789173 38019195 38829195 39269156 39389092 39108560 39098279 39388146 39428045 38807703 38657555 38407440 MRGL 40290426 43430357 44040321 44240274 44000153 43160026 42309994 41490003 40490028 38760057 37780029 36760026 35920064 35630110 35130255 35070324 35210389 35530444 36110464 40290426 TSTM 28107991 28338089 29038277 29298349 29658402 30008437 30558441 31358394 32228314 33378197 34118118 34988087 35538103 35808142 36138345 36068618 35478914 34979004 34239066 33569061 32739013 31898943 30898846 30178852 29868886 30018977 30359052 31009120 31699167 32899242 33779304 34399460 34359881 34359909 34140126 33440344 32690462 31750460 30970384 30260300 29250238 99999999 49469765 48889871 48179989 47370018 46729978 46159909 44679837 43649817 42119801 41219857 40549910 39699902 39019834 38589743 38329656 38449553 39279394 40749176 41439044 42018856 42678601 43358380 44418187 99999999 30761083 31801072 32951057 33831020 34310967 34840819 35780685 36950646 38230654 39990645 41050597 41950551 42670536 43210581 43290650 43090754 42570928 42351033 42291164 42511285 43211393 43911446 44221520 44501662 44591793 44771852 45051882 45691889 46501832 46901789 47321764 47771767 48221803 48411881 48671995 49152064 49472076 99999999 47946929 47096929 45687007 44817160 44437288 43777414 43017485 42127479 41507396 41017290 40437214 && THERE IS A SLIGHT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 60 E ECG 10 NNW DAN 20 S BLF 35 ESE JKL 10 ENE JKL 20 NNE JKL 35 NE JKL 25 SE HTS 35 ENE CRW 40 WSW EKN 45 SE WAL THERE IS A SLIGHT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 25 S BFF 15 SE BFF 20 SW AIA 25 SE AIA 45 SE AIA 10 WSW GLD 45 ENE LAA 10 SSE LAA 20 W LAA 30 N LHX 0 - LIC 30 W AKO 25 S BFF THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 45 ENE HSE 30 NW HSE 30 W RDU 35 E TRI 30 NW TRI 65 SSE SDF 25 SSE MDH 40 WSW FAM 25 S VIH 15 SW VIH 15 E COU 50 SSW UIN 40 SSE UIN 55 SE IND 30 WSW UNI 0 - PKB 30 WSW MGW 0 - DCA 20 N SBY 75 S ACY THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 40 ESE FCL 50 NNW CDR 10 W RAP 20 NE RAP 0 - PHP 25 NE VTN 20 S ANW 20 WNW BBW 25 NE MCK 60 N GCK 15 W DDC 40 NW GAG 45 ENE BGD 20 ESE BGD 45 W AMA 20 ESE TCC 15 W TCC 40 ESE LVS 45 S RTN 40 ESE FCL GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 45 NE VRB 20 NW MLB 35 WSW OCF 35 SW CTY 55 SSE TLH 30 S TLH 10 NNW TLH 20 NNW MGR 45 SE MCN 0 - AGS 15 NNW CAE 15 SSE CLT 20 NNW CLT 0 - HKY 35 NE TYS 30 E BNA 15 SW MKL 0 - MEM 55 NNE GLH 20 ENE GLH 30 N JAN 30 NNW PIB 20 NW MOB 40 SSW MOB 40 SSE GPT 25 S ASD 30 NNW MSY 35 N BTR 20 WNW HEZ 30 SE ELD 40 NNW ELD 25 NNW DEQ 30 NW SPS 25 SSE LTS 25 E PVW 55 NNW HOB 30 NW CNM 15 ESE GDP 45 NNE MRF 45 S FST 55 S 6R6 ...CONT... 60 NNW HCO 55 N DVL 45 W DVL 50 NNE BIS 45 E BIS 55 SSW JMS 20 NNW HON 10 SW MHE 30 WNW OFK 20 NW GRI 15 SSW EAR 60 N RSL 30 ENE RSL 20 SE SLN 20 W EMP 45 S TOP 45 SSW CDJ 35 W BRL 0 - MLI 30 ESE RFD 30 WSW GRR 20 SE MBS 70 NE BAX ...CONT... 65 SSW FHU 25 SSE TUS 60 NNE TUS 30 SSW SOW 20 E SOW 30 SW GNT 15 SSE 4SL 45 SW ALS 30 SE GUC 35 NE EGE 25 SW LAR 45 N LAR 0 - DGW 40 NW DGW 25 N CPR 45 E RIW 35 WSW LND 20 SW BPI 35 ENE MLD 30 SSW PIH 25 SE SUN 30 NNW SUN 65 SE MYL 35 SW MYL 15 SSW BKE 35 W BKE 45 S PDT 0 - PDT 30 N ALW 40 WNW PUW 20 SSW GEG 10 NNW GEG 45 NNW GEG 35 E OMK 25 NW OMK 70 NW OMK 90 NW OMK ...CONT... 95 NW CAR 60 WNW CAR 95 N AUG 25 WNW BML 15 ESE BTV 40 S SLK 30 ESE UCA 30 N MSV 10 SSW POU 15 SE BDR 60 S GON