WW 320 SEVERE TSTM OH LE 120335Z - 120900Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 320
NWS Storm Prediction Center Norman OK
1135 PM EDT Thu Jun 11 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northern into Northeast Ohio
Lake Erie
* Effective this Thursday night and Friday morning from 1135 PM
until 500 AM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
SUMMARY...A mature squall line will move across northern Ohio during
the overnight hours with a threat for scattered damaging wind gusts
ranging from 55 to 70 mph.
The severe thunderstorm watch area is approximately along and 55
statute miles north and south of a line from 10 miles west of
Findlay OH to 15 miles north northeast of Youngstown OH. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU0).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 317...WW 318...WW 319...
AVIATION...A few severe thunderstorms with hail surface and aloft to
0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 400. Mean storm motion vector
27045.
...Smith
WW 319 SEVERE TSTM IL IN OH 120145Z - 120700Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 319
NWS Storm Prediction Center Norman OK
945 PM EDT Thu Jun 11 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast Illinois
Central and Southern Indiana
Western into Central Ohio
* Effective this Thursday night and Friday morning from 945 PM
until 300 AM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...A mature squall line will likely progress east into the
Watch area through this evening into tonight. Strong to severe
gusts ranging from 55 to 70 mph will be capable of wind damage
within the more intense surges of the line. A brief tornado or two
with an embedded mesovortex is also possible.
The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 40 miles southwest of
Mattoon IL to 60 miles east northeast of Dayton OH. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 313...WW 314...WW
315...WW 316...WW 317...WW 318...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 400. Mean storm motion vector
27040.
...Smith
WW 318 TORNADO IL IN MI OH LM 120005Z - 120600Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 318
NWS Storm Prediction Center Norman OK
805 PM EDT Thu Jun 11 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Central Illinois
West-Central into Northern Indiana
Western and Central Lower Michigan
Far Northwest Ohio
Lake Michigan
* Effective this Thursday night and Friday morning from 805 PM
until 200 AM EDT.
* Primary threats include...
A few tornadoes and a couple intense tornadoes possible
Widespread damaging winds and isolated significant gusts to 75
mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...A mix of supercells and severe bows will move into the
Watch area this evening. A risk for a few tornadoes, including the
possibility for a strong tornado is forecast with the more intense
supercells and embedded mesovortices within the stronger bows.
Widespread damaging winds (60 to 75 mph) will likely focus with the
bowing segments as they rapidly move east-northeastward this evening
into the early overnight.
The tornado watch area is approximately along and 80 statute miles
east and west of a line from 35 miles west northwest of Saginaw MI
to 20 miles west of Terre Haute IN. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU8).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 313...WW 314...WW
315...WW 316...WW 317...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 25035.
...Smith
WW 316 SEVERE TSTM OK TX 112050Z - 120300Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 316
NWS Storm Prediction Center Norman OK
350 PM CDT Thu Jun 11 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southwest into Central Oklahoma
Western North Texas
* Effective this Thursday afternoon and evening from 350 PM until
1000 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Thunderstorms will likely develop along/near a cold front
this afternoon across parts of Oklahoma. This activity should pose
some threat for large hail generally up to 1-1.75 inches in
diameter. Scattered severe/damaging winds with peak gusts up to
60-70 mph should also occur as this convection spreads
east-southeastward through the evening.
The severe thunderstorm watch area is approximately along and 55
statute miles north and south of a line from 40 miles west southwest
of Altus OK to 15 miles east of Chandler OK. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU6).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 312...WW 313...WW
314...WW 315...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
30025.
...Gleason
WW 0320 Status Updates
STATUS FOR WATCH 0320 HAS NOT BEEN ISSUED YET
WW 0319 Status Updates
STATUS REPORT ON WW 319
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 N SLO TO
15 SSE MTO TO 10 W HUF TO 15 ENE HUF TO 15 SW IND TO 20 ESE IND
TO 35 E IND TO 30 WNW DAY TO 30 NNW DAY TO 45 N DAY TO 15 W FDY.
..BENTLEY..06/12/26
ATTN...WFO...ILX...IND...ILN...
STATUS REPORT FOR WS 319
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC023-025-033-035-049-079-101-159-120540-
IL
. ILLINOIS COUNTIES INCLUDED ARE
CLARK CLAY CRAWFORD
CUMBERLAND EFFINGHAM JASPER
LAWRENCE RICHLAND
INC005-013-021-031-041-047-055-081-105-109-119-139-145-153-161-
167-177-120540-
IN
. INDIANA COUNTIES INCLUDED ARE
BARTHOLOMEW BROWN CLAY
DECATUR FAYETTE FRANKLIN
GREENE JOHNSON MONROE
MORGAN OWEN RUSH
SHELBY SULLIVAN UNION
VIGO WAYNE
WW 0318 Status Updates
STATUS REPORT ON WW 318
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 SW DEC TO
25 SSW DNV TO 35 S LAF TO 25 N IND TO 20 WNW MIE TO 25 SW FWA TO
15 WNW FWA TO 30 ESE SBN TO 20 NE SBN TO 15 N AZO TO 25 ENE GRR
TO 30 SW HTL.
..BENTLEY..06/12/26
ATTN...WFO...ILX...IWX...IND...GRR...DTX...
STATUS REPORT FOR WT 318
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC029-045-173-120440-
IL
. ILLINOIS COUNTIES INCLUDED ARE
COLES EDGAR SHELBY
INC001-003-009-011-033-039-053-069-075-087-107-113-121-151-159-
165-179-183-120440-
IN
. INDIANA COUNTIES INCLUDED ARE
ADAMS ALLEN BLACKFORD
BOONE DE KALB ELKHART
GRANT HUNTINGTON JAY
LAGRANGE MONTGOMERY NOBLE
PARKE STEUBEN TIPTON
VERMILLION WELLS WHITLEY
MIC015-017-023-025-027-037-045-049-057-059-065-067-073-075-077-
WW 0317 Status Updates
STATUS REPORT ON WW 317
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 S WAL TO
15 WNW ILG TO 20 ESE ABE TO 40 WSW ALB.
..WEINMAN..06/12/26
ATTN...WFO...PHI...LWX...AKQ...OKX...ALY...BGM...
STATUS REPORT FOR WS 317
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
DEC001-003-005-120340-
DE
. DELAWARE COUNTIES INCLUDED ARE
KENT NEW CASTLE SUSSEX
NJC001-003-005-007-009-011-013-015-017-019-021-023-025-027-029-
031-033-035-037-039-041-120340-
NJ
. NEW JERSEY COUNTIES INCLUDED ARE
ATLANTIC BERGEN BURLINGTON
CAMDEN CAPE MAY CUMBERLAND
ESSEX GLOUCESTER HUDSON
HUNTERDON MERCER MIDDLESEX
MONMOUTH MORRIS OCEAN
PASSAIC SALEM SOMERSET
SUSSEX UNION WARREN
NYC005-047-061-071-079-081-085-087-105-111-119-120340-
WW 0316 Status Updates
STATUS REPORT ON WW 316
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNE CDS
TO 15 NW CQB TO 20 SW BVO.
..WEINMAN..06/12/26
ATTN...WFO...OUN...
STATUS REPORT FOR WS 316
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC015-017-027-031-033-049-051-055-057-063-065-075-081-087-109-
119-123-125-133-137-141-120140-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
CADDO CANADIAN CLEVELAND
COMANCHE COTTON GARVIN
GRADY GREER HARMON
HUGHES JACKSON KIOWA
LINCOLN MCCLAIN OKLAHOMA
PAYNE PONTOTOC POTTAWATOMIE
SEMINOLE STEPHENS TILLMAN
TXC023-155-197-275-485-487-120140-
TX
. TEXAS COUNTIES INCLUDED ARE
BAYLOR FOARD HARDEMAN
KNOX WICHITA WILBARGER
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
WW 0315 Status Updates
STATUS REPORT ON WW 315
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SW DCA TO
15 NW AVP TO 30 W ALB.
..WEINMAN..06/12/26
ATTN...WFO...LWX...BGM...BUF...CTP...
STATUS REPORT FOR WS 315
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
DCC001-120140-
DC
. DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE
DISTRICT OF COLUMBIA
MDC003-005-025-027-033-510-120140-
MD
. MARYLAND COUNTIES INCLUDED ARE
ANNE ARUNDEL BALTIMORE HARFORD
HOWARD PRINCE GEORGES
MARYLAND INDEPENDENT CITIES INCLUDED ARE
BALTIMORE CITY
NYC025-120140-
NY
WW 0314 Status Updates
STATUS REPORT ON WW 314
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW CQB
TO 35 SSE CNU TO 40 E CNU TO 15 S UIN.
..WEINMAN..06/12/26
ATTN...WFO...TSA...LSX...ICT...SGF...EAX...
STATUS REPORT FOR WS 314
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC007-015-033-087-143-120140-
AR
. ARKANSAS COUNTIES INCLUDED ARE
BENTON CARROLL CRAWFORD
MADISON WASHINGTON
ILC013-061-083-117-119-133-163-120140-
IL
. ILLINOIS COUNTIES INCLUDED ARE
CALHOUN GREENE JERSEY
MACOUPIN MADISON MONROE
ST. CLAIR
KSC021-037-120140-
KS
. KANSAS COUNTIES INCLUDED ARE
CHEROKEE CRAWFORD
WW 0313 Status Updates
STATUS REPORT ON WW 313
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNE DNV
TO 45 E MMO TO 50 S RAC TO 25 ENE MKE.
..BENTLEY..06/12/26
ATTN...WFO...DMX...DVN...LSX...LOT...ILX...EAX...MKX...
STATUS REPORT FOR WT 313
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC031-197-120240-
IL
. ILLINOIS COUNTIES INCLUDED ARE
COOK WILL
INC007-073-089-111-127-120240-
IN
. INDIANA COUNTIES INCLUDED ARE
BENTON JASPER LAKE
NEWTON PORTER
LMZ741-742-743-744-745-777-779-120240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
WILMETTE HARBOR TO NORTHERLY ISLAND IL
WW 0312 Status Updates
112240-
STATUS REPORT ON WW 312
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SE UNI TO
25 SSE HLG TO 30 NE LBE TO 25 S BFD TO 40 W ELM TO 25 S ROC.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0312
..MOORE..06/11/26
ATTN...WFO...
STATUS REPORT FOR WS 312
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
PAC021-023-033-047-051-059-063-105-111-129-112240-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
CAMBRIA CAMERON CLEARFIELD
ELK FAYETTE GREENE
INDIANA POTTER SOMERSET
WESTMORELAND
WVC001-017-033-049-061-073-077-083-085-091-093-095-103-107-
112240-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
BARBOUR DODDRIDGE HARRISON
MARION MONONGALIA PLEASANTS
PRESTON RANDOLPH RITCHIE
TAYLOR TUCKER TYLER
WETZEL WOOD
MD 1105 CONCERNING SEVERE POTENTIAL...WATCH LIKELY FOR NORTHERN OHIO
Mesoscale Discussion 1105
NWS Storm Prediction Center Norman OK
1042 PM CDT Thu Jun 11 2026
Areas affected...northern Ohio
Concerning...Severe potential...Watch likely
Valid 120342Z - 120515Z
Probability of Watch Issuance...95 percent
SUMMARY...Watch 320 was issued for the risk of damaging wind gusts.
DISCUSSION...A mature MCS continues east this evening across
northern Indiana and southern Michigan. This squall line will
continue eastward along the instability gradient into the overnight
hours. This squall line is likely near peak intensity now within the
most favorable thermodynamic and kinematic environment. Temperatures
are only in the mid to upper 70s across northern Ohio which will
likely result in some weakening of the line as it moves east.
Nonetheless, it will still pose a threat for damaging winds given
the well-established squall line and at least moderate instability
continuing into the overnight hours where dewpoints are in the upper
60s to low 70s.
..Bentley/Smith.. 06/12/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...CLE...
LAT...LON 41688379 41648296 41838141 41568059 41098057 40978109
40758175 40678255 40748299 40908386 41688379
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
Public Severe Weather Outlook
PUBLIC SEVERE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1130 AM CDT THU JUN 11 2026
...Outbreak of severe thunderstorms expected over parts of the
Midwest and Great Lakes this afternoon and evening...
* LOCATIONS...
Far Eastern Iowa
Northern and Central Illinois
Southern Wisconsin
Northern Indiana
Northern Missouri
Lower Michigan
* HAZARDS...
Widespread damaging winds, some hurricane force
Several tornadoes, a couple intense
Isolated large hail up to baseball size
* SUMMARY...
Widespread severe thunderstorms are expected this afternoon and
evening across parts of the Midwest and Great Lakes region,
including far eastern Iowa, northern Missouri, northern/central
Illinois, southern Wisconsin, Lower Michigan, and northern
Indiana. This includes the potential for widespread/intense
damaging winds (some 75+ mph), large hail, and several
tornadoes, some of which may be strong to intense.
Preparedness actions...
Review your severe weather safety procedures for the possibility
of dangerous weather today. Stay tuned to NOAA Weather Radio,
weather.gov, or other media for watches and warnings. A watch
means that conditions are favorable for severe thunderstorms
over the next several hours. If a severe thunderstorm warning is
issued for your area, move to a place of safety, ideally in an
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0800 PM CDT Thu Jun 11 2026
Valid 120100Z - 121200Z
...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE MIDWEST/GREAT LAKES...
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR PARTS OF THE
MID ATLANTIC...
...SUMMARY...
Severe thunderstorms will continue this evening across parts of the
Midwest and Great Lakes region. This includes the potential for
tornadoes (possibly strong), widespread/intense damaging winds (some
75+ mph), and isolated hail.
...Parts of the Midwest/Great Lakes...
A rather volatile environment remains in place this evening across
parts of IL/IN and southwest Lower MI, especially in the vicinity of
a modified outflow across northern IL/IN. Rich low-level moisture,
moderate to strong buoyancy, and strong low-level shear/SRH will
continue to support all severe hazards through much of the evening.
Convection has largely taken on a linear or cluster mode, with an
attendant threat of severe/damaging gusts and line-embedded
tornadoes. Any discrete cells that can be maintained within or ahead
of ongoing convection will continue to pose a conditional
strong-tornado threat, along with isolated hail potential. See MCD
1101 and MCD 1102 for more information regarding the short-term
threat in this area.
Increasing CINH and decreasing MLCAPE with eastward extent should
eventually result in a weakening trend, though an organized severe
threat may reach parts of southeast MI and western OH later tonight.
...OK/TX into MO/northern AR...
Scattered strong to locally severe storms are ongoing from parts of
western/central OK into MO, generally along or just behind a
southward moving cold front. Moderate to strong buoyancy and
deep-layer shear of around 25-35 kt near the front will continue to
support occasional storm organization and a continued threat of hail
and localized severe gusts, though convection may increasingly
become undercut by the front with time. An isolated severe threat
may eventually spread toward the Red River into western/northern AR
late tonight.
...Mid Atlantic vicinity...
Loosely organized storm clusters with a history of producing wind
damage are approaching the Mid Atlantic coast this evening. While
deep-layer shear will continue to be modest at best, a very
warm/moist boundary layer and moderate buoyancy will continue to
support potential for strong to locally severe gusts and scattered
wind damage, before convection weakens and/or moves offshore later
tonight.
..Dean.. 06/12/2026
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