Day 1 Areal Outline

Issued: 2026-08-18 01:01 UTC

Summary

Severe thunderstorms, including a slight risk of tornadoes and hail, are expected across parts of the Southeast and Midwest through Monday evening. Marginal risks for severe weather also extend across portions of the central and southern United States.

Product Text

000 WUUS01 KWNS 180101 PTSDY1 DAY 1 CONVECTIVE OUTLOOK AREAL OUTLINE NWS STORM PREDICTION CENTER NORMAN OK 0759 PM CDT MON AUG 17 2026 VALID TIME 180100Z - 181200Z PROBABILISTIC OUTLOOK POINTS DAY 1 ... TORNADO ... 0.02 40759961 40830029 41150180 41440236 42020274 42680279 43200266 43660243 44120191 44420117 44530058 44669996 44609920 44279801 44099742 43819690 43529661 43009646 42509631 41499697 41009789 40859861 40759961 && ... HAIL ... 0.05 39589977 39480082 39520158 39740205 40420269 42290311 43740341 44740329 45470278 46070168 46210063 46269829 46309696 46659624 46979564 47059509 46899434 46479368 45869362 44699378 42879474 41479614 40389776 40009872 39589977 0.15 40729800 40629886 40499994 40450072 40480110 40620145 40860190 41330211 42180232 43790223 44690171 45220106 45390035 45419910 45079736 44559655 43859619 43289602 42839601 41979623 41169717 40729800 CIG1 44600178 44860115 44960025 44789937 44289858 43239790 42269768 41439794 40919858 40649922 40569992 40470057 40480113 40820180 41380208 42210232 43810224 44600178 && ... WIND ... 0.05 33788269 33558440 33308668 33258782 33368874 33578933 33978961 34278964 34878890 35168719 35568373 36178130 36157944 36257842 36117778 35787731 35287751 34727802 34337904 33988084 33788269 0.05 46969222 44399304 42919379 41679500 40169677 38160023 37630153 37280286 37310333 37440345 37600346 38060346 39180320 41250307 42250341 43350488 44500709 45800839 46360852 46840840 47180800 47440703 47500596 47360511 47030418 46700315 46490187 46390069 46299817 46299728 46689638 47419541 47899428 48119363 48129307 47709247 46969222 0.15 40539943 40540060 40810154 41280192 42100244 42860243 43830227 44630179 45210106 45390033 45419909 45089731 45319631 45879589 46319563 46499535 46609470 46309410 45689394 44679400 43069491 41729621 41079707 40749799 40539943 0.15 34428286 34358374 34158522 34118620 34348656 34608648 34798596 34968437 35158274 35478153 35418097 35238085 34918089 34638180 34428286 CIG1 40749947 40760052 41020133 41440180 42130229 43630220 44530173 44810139 45060082 45149988 44929905 44429772 43599661 42509628 41449704 40889823 40749947 && CATEGORICAL OUTLOOK POINTS DAY 1 ... CATEGORICAL ... SLGT 34608648 34798596 35158274 35478153 35418097 35238085 34918089 34638180 34428286 34158522 34118620 34348656 34608648 SLGT 42860243 43830227 44630179 45220106 45390035 45419909 45089731 45319631 46319563 46499535 46609470 46309410 45689394 44679400 43069491 41729621 41079707 40729800 40499994 40480110 40860190 41740221 42100244 42860243 MRGL 34878890 35168719 35568373 36178130 36157944 36257842 36117778 35787731 35287751 34727802 34337904 33988084 33308668 33258782 33368874 33578933 33978961 34278964 34878890 MRGL 46840840 47180800 47440703 47500596 47360511 46700315 46490187 46299728 46689638 47419541 48119363 48129307 47709247 46969222 44399304 42919379 41679500 40169677 38160023 37630153 37280286 37310333 37440345 38060346 39180320 41250307 42250341 43350488 44500709 45800839 46360852 46840840 TSTM 28559069 28629073 29289113 30009129 30609121 31219105 31689070 32179060 32609067 32929132 33209254 33789568 34429798 35229919 35819955 36150009 36350077 36220138 35620231 35130261 33880304 31370321 30650297 29780249 29450217 99999999 46958417 45818692 45038846 43639045 42569163 41059324 39019563 38269617 37729612 37319589 36819470 36369333 36049154 36028943 36588655 37858460 39458278 39918136 40047966 39847852 40287710 41047606 42477487 43737355 44557225 44837135 44777085 44567011 44266997 43807010 43277060 42547156 41447251 40707292 39987312 99999999 31361298 33071201 34171115 35240996 36570771 37230567 37980500 39190463 40160476 41220543 41810667 42030810 41930981 41541105 40731216 39911318 39501390 39381428 39311492 39491584 39971628 41171638 45791587 48171490 49571407 99999999 33737717 33657788 33267940 32978178 32788251 32328311 31678296 31188225 30808146 30588079 99999999 29048014 28658095 28858178 29178261 29278330 29228380 && THERE IS A SLIGHT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 15 ESE HSV 45 WSW CHA 20 SSW AVL 20 SSW HKY 15 N CLT 0 - CLT 20 S CLT 20 SSE SPA 10 SW AND 15 SSW RMG 10 NW GAD 25 SSE HSV 15 ESE HSV THERE IS A SLIGHT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 35 E CDR 35 WSW PHP 40 NNW PHP 35 SW MBG 10 SSE MBG 35 W ABR 15 NW ATY 0 - VVV 30 NNW AXN 45 N AXN 30 WNW BRD 0 - BRD 10 NNE STC 30 N MKT 15 ESE SPW 0 - TQE 20 NW LNK 25 SE GRI 40 ENE MCK 25 E IML 30 NNW IML 35 SE AIA 20 E AIA 35 E CDR THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 40 N TUP 35 NE MSL 25 SE TYS 30 N HKY 30 SSW DAN 35 NE RDU 20 NNE RWI 35 E RWI 30 NNE OAJ 25 WSW OAJ 45 N CRE 15 ENE CAE 20 SSE BHM 10 W TCL 25 SW CBM 45 E GWO 30 S UOX 10 SW UOX 40 N TUP THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 70 N BIL 70 E LWT 55 SSW GGW 45 SSW OLF 20 NW GDV 20 WSW DIK 40 NNE Y22 50 SSW FAR 25 SE FAR 25 WSW BJI 35 SSW INL 35 SSE INL 30 NE HIB 10 NNW DLH 35 SSE MSP 30 SW MCW 30 SE DNS 10 S BIE 30 NNW DDC 50 NNE EHA 15 W SPD 40 W SPD 40 S LHX 0 - LHX 25 ESE LIC 10 NNW SNY 25 NNE BFF 50 NNE DGW 20 SSW SHR 0 - BIL 40 N BIL 70 N BIL GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 70 S HUM 65 S HUM 35 SW HUM 40 SSW BTR 0 - BTR 30 SSE HEZ 35 NNW MCB 30 WSW JAN 40 WNW JAN 45 SSW GLH 15 E ELD 15 NW PRX 30 ESE FSI 10 S CSM 35 SSE GAG 20 WSW GAG 50 SSE LBL 30 SSE GUY 30 SSE DHT 60 S DHT 40 SSE CVS 30 S INK 20 S FST 25 SW 6R6 40 S 6R6 ...CONT... 35 NNE ANJ 10 NE ESC 40 NNW GRB 25 SSW VOK 45 N CID 20 SSW OXV 0 - TOP 0 - EMP 40 S EMP 35 SW CNU 15 N GMJ 10 WNW HRO 20 NNE BVX 0 - DYR 30 SSW BWG 10 S LEX 40 S CMH 30 E ZZV 20 SW LBE 35 SSW AOO 15 WNW CXY 25 SW AVP 55 N MSV 30 N GFL 25 S EFK 15 NW BML 20 ENE BML 25 NW AUG 10 WSW AUG 15 NE PWM 15 NE PSM 25 NE ORH 25 WNW GON 10 SE ISP 55 S ISP ...CONT... 110 S GBN 25 S PHX 65 SSW INW 45 ENE INW 30 ESE FMN 20 SE ALS 35 SW PUB 25 N COS 25 SE FCL 15 ESE LAR 25 E RWL 50 WNW RWL 45 SSE BPI 20 N EVW 10 WSW SLC 25 SW DPG 50 ENE ELY 30 ENE ELY 0 - ELY 0 - P68 35 NNW P68 40 NW EKO 30 SSW P69 30 WSW GPI 85 N GPI ...CONT... 55 SE ILM 45 S ILM 40 SW CRE 30 SSE AGS 40 NNW VDI 40 SE MCN 45 NW AYS 10 ESE AYS 25 S SSI 55 NE SGJ ...CONT... 55 E DAB 25 ENE ORL 35 NW ORL 25 W OCF 30 SSW CTY 50 WSW CTY