Day 1 Areal Outline

Issued: 2026-08-11 05:02 UTC

Summary

Severe thunderstorms capable of producing tornadoes, large hail, and damaging winds are expected throughout much of the central and eastern United States on Tuesday, August 11. An enhanced risk of severe weather is particularly noted for portions of the Midwest, including areas near Springfield, IL, and Des Moines, IA.

Product Text

000 WUUS01 KWNS 110502 PTSDY1 DAY 1 CONVECTIVE OUTLOOK AREAL OUTLINE NWS STORM PREDICTION CENTER NORMAN OK 1200 AM CDT TUE AUG 11 2026 VALID TIME 111200Z - 121200Z PROBABILISTIC OUTLOOK POINTS DAY 1 ... TORNADO ... 0.02 37188188 37288263 37658514 38098640 39418890 40539043 41979153 42589153 42769075 41818704 40938408 39878129 39328056 38738026 38138030 37658058 37318112 37188188 && ... HAIL ... 0.05 40509263 40949513 41169713 41259886 41540025 41980156 43080390 44180402 45940398 46740370 47660242 47949995 47539836 47059729 46289569 45639435 45129326 44569197 43789112 42679059 41969057 41389088 40859157 40509263 0.15 46839779 46149760 45699815 45019927 44309923 43059848 42589882 42389952 42470140 42920207 43580291 44160345 45500332 46700302 47170169 47139935 46839779 CIG1 45780401 46620356 46850299 46920228 46910164 46630092 45820095 44090117 42860040 42310062 42220144 42450210 43130347 43480390 45780401 && ... WIND ... 0.05 36357510 35577621 35237750 35157867 35087981 34958237 35188381 35668488 36188600 38928970 40359201 40949510 41139703 41259873 41480006 41920137 43160400 45870401 46770373 47650244 47939985 47559834 47109744 45209350 44529185 43938957 42458422 42048254 41587949 40917565 40027314 0.15 36317959 36168176 36648384 37528567 38648770 40369097 42259393 43029436 43549420 43899340 43879181 43278925 42638680 39197853 38527793 37587786 36757862 36527882 36317959 0.15 42820198 43310257 44010342 45490361 46100352 46610313 47150170 47109943 46899775 46209760 45699798 45019927 44249910 43029848 42679878 42369948 42450130 42820198 0.30 42408905 41538592 40268306 39598248 39178239 38848231 38398250 38078279 37708327 37658392 37758441 38158534 39668775 40798971 41669059 42259045 42438981 42408905 CIG1 37348407 37598504 38118593 39538841 41299103 41799233 42519391 42939424 43229422 43539392 43739304 42818878 41858584 40818347 39928229 39288192 38778188 38358214 37648267 37358350 37348407 && CATEGORICAL OUTLOOK POINTS DAY 1 ... CATEGORICAL ... ENH 42259045 42438981 42408905 41538592 40268306 39598248 38848231 38398250 37708327 37658392 37758441 38158534 40798971 41669059 42259045 SLGT 43549420 43899340 43879181 42638680 39197853 38527793 37587786 36527882 36317959 36168176 36648384 37528567 40369097 42259393 43029436 43549420 SLGT 46100352 46610313 47170169 47139935 46899775 46209760 45699798 45019927 44249910 43029848 42589882 42369948 42450130 42820198 44010342 45490361 46100352 MRGL 36357511 35577621 35237750 34958237 35188381 36188600 38928970 40359201 40949513 41259886 41480006 41980156 43080390 43160400 45870401 46770373 47660242 47939985 47559834 45129326 44529185 42048254 40917565 40027314 TSTM 31591713 33591785 34181783 34981760 35631707 36011637 36571615 36941631 36941675 36741721 36241768 36081810 36091854 36471901 37882006 39042053 39502039 39761992 39861926 39931865 41231501 41621413 42171345 42671221 42861088 42620970 42350837 42040674 42200570 42660499 43430494 44870540 46260591 47170702 47940889 48411096 48701336 49751796 99999999 25349741 27479783 30479703 32059581 32599509 32969351 32779180 32639022 33088944 34178940 36159007 37079175 37909401 38359603 38419801 37899986 36740157 34760380 33550423 32480391 32110301 30730196 29240196 99999999 44346699 44896845 45137042 45247228 99999999 43717968 42807732 42417509 41967201 41866932 && THERE IS A ENHANCED RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 15 SE DBQ 40 WNW RFD 15 N RFD 25 ESE SBN 20 NNW CMH 30 NNW UNI 25 S UNI 0 - HTS 15 NNE JKL 30 WNW JKL 20 SSE LEX 20 E SDF 10 N PIA 15 NNW MLI 15 SE DBQ THERE IS A SLIGHT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 15 SE FRM 35 SE MKT 30 W LSE 40 NNW BEH 35 WSW MRB 40 NE CHO 30 W RIC 30 E DAN 25 SW DAN 35 NW HKY 35 SSE LOZ 45 S SDF 30 SSE BRL 25 SSE FOD 35 NNW FOD 15 SE FRM THERE IS A SLIGHT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 35 N 2WX 20 SW DIK 35 SSW N60 35 WNW JMS 45 W FAR 60 SW FAR 25 NE ABR 50 SW ABR 35 NNE 9V9 40 NNE ONL 10 NW ONL 30 ESE ANW 30 NNW MHN 55 E CDR 20 W RAP 0 - 2WX 35 N 2WX THERE IS A MARGINAL RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 60 E ECG 40 NW HSE 30 NNE OAJ 10 WNW GSP 45 SSE TYS 40 E BNA 20 E ALN 35 ENE IRK 20 NE SDA 35 N EAR 25 W BBW 25 W MHN 45 WNW CDR 50 WNW CDR 35 SSE BHK 40 NE BHK 60 NNE DIK 45 WSW DVL 45 NNE JMS 15 N MSP 30 SW EAU 40 SSE MTC 20 NNW ABE 55 S ISP GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 80 S SAN 25 SE LGB 25 NW RAL 20 ENE EDW 35 E NID 50 SSW DRA 10 SW DRA 25 NW DRA 45 WNW DRA 80 NNE NID 40 N NID 35 NW NID 55 NNE BFL 45 ESE FAT 50 NNE MER 30 WNW TVL 35 W RNO 20 NNW RNO 35 NE RNO 10 SSW LOL 50 NE EKO 60 N ENV 30 SSE BYI 25 SE PIH 50 S JAC 20 E BPI 35 SSE LND 30 NE RWL 40 SSW DGW 20 ESE DGW 50 NNE DGW 35 N GCC 10 S MLS 75 SSW GGW 65 NNE LWT 65 NNE GTF 50 ENE GPI 115 NE OMK ...CONT... 40 S BRO 20 SE ALI 40 W CLL 30 SW TYR 25 NE TYR 40 NNE SHV 20 NE MLU 25 NNW JAN 45 SE GWO 15 SSE UOX 40 NE JBR 25 NNE UNO 60 NNE JLN 10 E EMP 25 NNW HUT 10 NE DDC 0 - GUY 30 SSW TCC 25 NE ROW 25 ENE CNM 25 NNE INK 50 NNE 6R6 55 SSE 6R6 ...CONT... 40 S EPM 20 ENE BGR 50 NE BML 25 N EFK ...CONT... 70 NW BUF 30 SE ROC 50 NNW MSV 20 SSW ORH 55 NE ACK