Day 1 Areal Outline

Issued: 2026-08-12 05:16 UTC

Summary

Severe thunderstorms capable of producing tornadoes, large hail, and damaging winds are expected across portions of the central and eastern United States on Wednesday, August 12, 2026. Risks range from marginal to slight severity for several regions, including the central plains and parts of the Northeast.

Product Text

000 WUUS01 KWNS 120516 PTSDY1 DAY 1 CONVECTIVE OUTLOOK AREAL OUTLINE NWS STORM PREDICTION CENTER NORMAN OK 1214 AM CDT WED AUG 12 2026 VALID TIME 121200Z - 131200Z PROBABILISTIC OUTLOOK POINTS DAY 1 ... TORNADO ... 0.02 39539114 40029112 40349078 40958982 41158835 40878706 39698499 38968463 37688538 36838688 36888761 37168855 37988961 38178982 39539114 && ... HAIL ... 0.05 39900517 42400495 43470487 43790493 46000607 47220546 47870410 47990080 47559785 46569599 44469522 41749533 40609723 38940130 38620225 38740328 38870458 39900517 0.05 42939068 42028710 40668538 38978522 37268635 36978769 37248898 37729007 38749105 40049162 41299223 42199185 42659164 42939068 0.05 44618359 43827796 42847583 41727458 41127554 40727915 40918025 41288172 42238377 43498532 44488494 44618359 0.15 44260212 42760106 40990093 40300143 39850213 39710322 39890385 41470406 43460406 44390384 44690347 44260212 && ... WIND ... 0.05 29218001 29358117 29498261 30428413 32918568 34858794 36629038 38139249 38799359 39839593 39929813 39470050 39020226 38840461 40020512 41620511 43460491 45940606 47190550 47730426 47920084 47529807 46569604 43649367 42638926 41508609 40158377 37158131 31447852 0.05 43847797 42867584 41637443 40647436 39837512 39637598 41298176 42238375 43508535 44498498 44608376 44288066 43897859 43847797 0.15 42180409 43540410 44750386 44970258 44139877 43589719 41358784 40448601 39798507 38908476 37778507 37008554 36678624 36838745 37398890 38929113 39809203 40269283 40759424 40979612 40739750 39870146 39670330 39880387 40570403 41310405 42180409 && CATEGORICAL OUTLOOK POINTS DAY 1 ... CATEGORICAL ... SLGT 44750386 44970258 44139877 43589719 41358784 40448601 39798507 38908476 37778507 37008554 36678624 36838745 37398890 38929113 39809203 40269283 40759424 40979612 39870146 39670330 39880387 40570403 43540410 44750386 MRGL 29248025 29498261 30428413 32918568 34858794 38139249 38799359 39839593 39929813 39659957 38620225 38840461 39900517 41620511 43460491 46000607 47190550 47870410 47990080 47559785 46569599 43649367 42638926 42028710 41738673 41508609 40158377 37158131 32507904 MRGL 43847797 42867584 41637443 40647436 39837512 39637598 41298176 42238377 43508535 44498498 44618359 44398171 TSTM 47086663 45946857 45016998 43617123 42717164 41957139 41497048 41316835 99999999 36917473 37327584 37917692 38247798 38047871 37507923 36637961 35847956 35417859 35277709 35297600 35547450 99999999 31621618 33371651 34781737 35471801 36191896 37762018 38932055 39982038 40561993 40951862 41361743 42011626 42581524 43361428 44141423 45741499 46881605 46701782 46451989 46472131 46712186 47182208 47722211 48302238 49402338 99999999 28569404 29839463 30669443 31009386 31199289 31139079 31318896 31988879 33148943 35129123 37859408 38419711 38439934 37860134 36720280 35750339 34320337 33390246 32580180 28890142 99999999 49609922 48599645 48339554 47409294 46609214 45529086 45058950 45118680 45538422 46338186 && THERE IS A SLIGHT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 60 SSW 2WX 70 NNE RAP 30 WSW HON 25 W FSD 45 E MMO 35 WNW MIE 35 SSE MIE 25 SW LUK 30 SW LEX 50 E BWG 25 SSE BWG 10 N HOP 25 NNW PAH 45 WNW STL 35 SE IRK 20 NW IRK 20 WNW LWD 25 SSW OMA 35 NNE GLD 35 S AKO 45 NNW LIC 50 WNW AKO 65 WSW RAP 60 SSW 2WX THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 50 E DAB 25 WSW GNV 15 E TLH 25 NW AUO 20 WNW MSL 35 NW TBN 0 - SZL 25 SW FNB 35 NW CNK 25 NE HLC 45 S ITR 0 - COS 20 WNW DEN 35 NNW CYS 55 NNE DGW 30 SSW MLS 35 W GDV 15 NNE SDY 30 SE MOT 40 SW GFK 20 SSW DTL 40 NNW MCW 10 W JVL 40 N VPZ 25 NE VPZ 20 SE SBN 30 NE DAY 10 SSW BLF 65 ESE CHS THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 50 NNW ROC 25 SE SYR 20 ESE MSV 10 WSW EWR 0 - PHL 20 W ILG 10 SSE CLE 0 - ARB 45 N GRR 20 WNW HTL 15 NW OSC 75 NE BAX GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 65 ENE CAR 40 WSW HUL 50 N AUG 10 ENE LCI 35 NNE ORH 15 N PVD 15 SW HYA 90 E ACK ...CONT... 80 SSE WAL 35 NE ORF 35 NE RIC 25 ENE CHO 15 WSW CHO 10 N LYH 15 WNW DAN 25 SE GSO 35 SSE RDU 15 N EWN 20 WNW HSE 65 ENE HSE ...CONT... 70 SSE CZZ 25 SW TRM 30 ESE EDW 25 SW NID 55 N BFL 40 NNE MER 30 W TVL 45 NW RNO 75 N RNO 45 W WMC 35 NNE WMC 0 - OWY 40 W TWF 10 S SUN 45 N SUN 40 SE P69 55 NNW P69 35 W PUW 30 ESE YKM 35 W YKM 55 SSE SEA 20 SSE SEA 20 NNE SEA 35 SSE BLI 55 NW BLI ...CONT... 70 SE GLS 35 NNE GLS 45 SSE LFK 40 W POE 20 ENE POE 20 W MCB 25 ESE PIB 25 S MEI 45 ESE GWO 50 SSE BVX 55 NNE JLN 40 SE SLN 40 SW RSL 35 W GCK 25 NE CAO 40 NNE TCC 0 - CVS 40 WSW LBB 30 NW BGS 45 SW DRT ...CONT... 105 N DVL 25 ESE HCO 35 SSE ROX 0 - HIB 15 S DLH 55 NNE EAU 10 NE AUW 45 SSE ESC 30 E PLN 120 NE APN