#CLE #OHwx 742
ACUS11 KWNS 181639
SWOMCD
SPC MCD 181638
MIZ000-OHZ000-INZ000-ILZ000-181745-

Mesoscale Discussion 0770
NWS Storm Prediction Center Norman OK
1138 AM CDT Mon May 18 2026

Areas affected...Lower Michigan

Concerning...Severe potential...Watch likely

Valid 181638Z - 181745Z

Probability of Watch Issuance...95 percent

SUMMARY...A new severe thunderstorm watch will be needed as the
northern edge of a QLCS/Bow Echo moves across Lake Michigan and into
lowe https://www.spc.noaa.gov/products/md/2026/md0770.html

#ILN #OHwx 358
WUUS01 KWNS 181626
PTSDY1

DAY 1 CONVECTIVE OUTLOOK AREAL OUTLINE
NWS STORM PREDICTION CENTER NORMAN OK
1125 AM CDT MON MAY 18 2026

VALID TIME 181630Z - 191200Z

PROBABILISTIC OUTLOOK POINTS DAY 1

... TORNADO ...

0.02 43888180 40988408 39658558 38708702 36869115 35909359
35609625 34019801 33219954 33690028 35250073 37490045
40259801 41969645 43569388 44029187 43479047 41829073
41788854 42318640 43248570 44288436 45868235
0.05 https://www.spc.noaa.gov/products/outlook/archive/2026/day1otlk_20260518_1630.html

#ILN #OHwx 358
WUUS01 KWNS 181626
PTSDY1

DAY 1 CONVECTIVE OUTLOOK AREAL OUTLINE
NWS STORM PREDICTION CENTER NORMAN OK
1125 AM CDT MON MAY 18 2026

VALID TIME 181630Z - 191200Z

PROBABILISTIC OUTLOOK POINTS DAY 1

... TORNADO ...

0.02 43888180 40988408 39658558 38708702 36869115 35909359
35609625 34019801 33219954 33690028 35250073 37490045
40259801 41969645 43569388 44029187 43479047 41829073
41788854 42318640 43248570 44288436 45868235
0.05 https://www.spc.noaa.gov/products/outlook/archive/2026/day1otlk_20260518_1630.html

#CLE #OHwx 358
WUUS01 KWNS 181626
PTSDY1

DAY 1 CONVECTIVE OUTLOOK AREAL OUTLINE
NWS STORM PREDICTION CENTER NORMAN OK
1125 AM CDT MON MAY 18 2026

VALID TIME 181630Z - 191200Z

PROBABILISTIC OUTLOOK POINTS DAY 1

... TORNADO ...

0.02 43888180 40988408 39658558 38708702 36869115 35909359
35609625 34019801 33219954 33690028 35250073 37490045
40259801 41969645 43569388 44029187 43479047 41829073
41788854 42318640 43248570 44288436 45868235
0.05 https://www.spc.noaa.gov/products/outlook/archive/2026/day1otlk_20260518_1630.html

#ILN #OHwx 110
WWUS61 KILN 181511
WCNILN

WATCH COUNTY NOTIFICATION FOR WATCH 220
NATIONAL WEATHER SERVICE WILMINGTON OH
1111 AM EDT MON MAY 18 2026

OHC011-107-182200-
/O.NEW.KILN.SV.A.0220.260518T1511Z-260518T2200Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
220 IN EFFECT UNTIL 6 PM EDT THIS EVENING FOR THE FOLLOWING AREAS

IN OHIO THIS WATCH INCLUDES 2 COUNTIES

IN WEST CENTRAL OHIO

AUGLAIZE MERCER

THIS INCLUDES https://mesonet.agron.iastate.edu/vtec/f/2026-O-NEW-KILN-SV-A-0220_2026-05-18T15:11Z

#ILN #OHwx 110
WWUS61 KILN 181511
WCNILN

WATCH COUNTY NOTIFICATION FOR WATCH 220
NATIONAL WEATHER SERVICE WILMINGTON OH
1111 AM EDT MON MAY 18 2026

OHC011-107-182200-
/O.NEW.KILN.SV.A.0220.260518T1511Z-260518T2200Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
220 IN EFFECT UNTIL 6 PM EDT THIS EVENING FOR THE FOLLOWING AREAS

IN OHIO THIS WATCH INCLUDES 2 COUNTIES

IN WEST CENTRAL OHIO

AUGLAIZE MERCER

THIS INCLUDES https://mesonet.agron.iastate.edu/vtec/f/2026-O-NEW-KILN-SV-A-0220_2026-05-18T15:11Z

#ILN #OHwx 785
WWUS20 KWNS 181500
SEL0
SPC WW 181500
ILZ000-INZ000-MIZ000-OHZ000-LMZ000-182200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 220
NWS Storm Prediction Center Norman OK
1105 AM EDT Mon May 18 2026

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Eastern Illinois
Northern and Central Indiana
Southwest Michigan
Northwest Ohio
Lake Michigan

* Effective this Monday morning and https://www.spc.noaa.gov/products/watch/2026/ww0220.html

#ILN #OHwx 785
WWUS20 KWNS 181500
SEL0
SPC WW 181500
ILZ000-INZ000-MIZ000-OHZ000-LMZ000-182200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 220
NWS Storm Prediction Center Norman OK
1105 AM EDT Mon May 18 2026

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Eastern Illinois
Northern and Central Indiana
Southwest Michigan
Northwest Ohio
Lake Michigan

* Effective this Monday morning and https://www.spc.noaa.gov/products/watch/2026/ww0220.html

#ILN #OHwx 724
WUUS01 KWNS 181246
PTSDY1

DAY 1 CONVECTIVE OUTLOOK AREAL OUTLINE
NWS STORM PREDICTION CENTER NORMAN OK
0744 AM CDT MON MAY 18 2026

VALID TIME 181300Z - 191200Z

PROBABILISTIC OUTLOOK POINTS DAY 1

... TORNADO ...

0.02 43888180 40988408 39658558 38708702 36919107 35609416
33509787 32100055 32330111 33020100 37490045 40259801
41949651 44719251 45329136 45569002 45398920 44738841
43148798 42518773 42238713 42358639 43248570 4428843 https://www.spc.noaa.gov/products/outlook/archive/2026/day1otlk_20260518_1300.html

#ILN #OHwx 724
WUUS01 KWNS 181246
PTSDY1

DAY 1 CONVECTIVE OUTLOOK AREAL OUTLINE
NWS STORM PREDICTION CENTER NORMAN OK
0744 AM CDT MON MAY 18 2026

VALID TIME 181300Z - 191200Z

PROBABILISTIC OUTLOOK POINTS DAY 1

... TORNADO ...

0.02 43888180 40988408 39658558 38708702 36919107 35609416
33509787 32100055 32330111 33020100 37490045 40259801
41949651 44719251 45329136 45569002 45398920 44738841
43148798 42518773 42238713 42358639 43248570 4428843 https://www.spc.noaa.gov/products/outlook/archive/2026/day1otlk_20260518_1300.html