WW 390 SEVERE TSTM KS NE 250005Z - 250700Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 390
NWS Storm Prediction Center Norman OK
705 PM CDT Wed Jun 24 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest and North-Central Kansas
Southwest and South-Central Nebraska
* Effective this Wednesday night and Thursday morning from 705 PM
until 200 AM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Scattered large hail and isolated very large hail events to 3
inches in diameter possible
A tornado or two possible
SUMMARY...Thunderstorm coverage is expected to increase this evening
across southwest/south-central Nebraska and northwest/north-central
Kansas. Strong buoyancy and vertical shear will support the
potential for large to very large hail over the next few hours when
a more cellular mode is favored. A low-probability tornado risk
exists during this time period as well. Thereafter, a trend towards
a more linear storm mode is possible, with the primary severe threat
transitioning to strong gusts. Isolated gusts may approach 75 mph.
The severe thunderstorm watch area is approximately along and 75
statute miles north and south of a line from 25 miles west northwest
of Imperial NE to 55 miles south southeast of Kearney NE. 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 387...WW 388...WW 389...
AVIATION...A few severe thunderstorms with hail surface and aloft to
3 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
29020.
...Mosier
WW 389 TORNADO CO NE WY 242150Z - 250500Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 389
NWS Storm Prediction Center Norman OK
350 PM MDT Wed Jun 24 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Northeast Colorado
Nebraska Panhandle
East-Central and Southeast Wyoming
* Effective this Wednesday afternoon and evening from 350 PM
until 1100 PM MDT.
* Primary threats include...
A couple tornadoes possible
Scattered damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail and isolated very large hail events to 3.5
inches in diameter likely
SUMMARY...Supercell thunderstorms are expected to develop within the
very unstable and strongly sheared environment in place across the
region this afternoon and evening. Environmental conditions support
the potential for a few tornadoes within any mature supercells, with
very large hail up to 3.5" in diameter possible as well. Over time,
one or more bowing segments could materialize, with an attendant
risk for severe gusts up to 75 mph.
The tornado watch area is approximately along and 60 statute miles
east and west of a line from 15 miles southwest of Limon CO to 35
miles east northeast of Douglas WY. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU9).
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 387...WW 388...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 3.5 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 29015.
...Mosier
WW 388 SEVERE TSTM CO NM 242055Z - 250400Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 388
NWS Storm Prediction Center Norman OK
255 PM MDT Wed Jun 24 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast Colorado
Eastern New Mexico
* Effective this Wednesday afternoon and evening from 255 PM
until 1000 PM MDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Isolated damaging wind gusts to 70 mph possible
SUMMARY...Strong to severe thunderstorms will continue to develop
across eastern New Mexico into southeast Colorado including near the
Raton Mesa and I-25/I-40 corridors. Large hail and some
severe-caliber wind gusts are the primary hazards through
early/mid-evening.
The severe thunderstorm watch area is approximately along and 55
statute miles east and west of a line from 25 miles northeast of
Colorado Springs CO to 105 miles south southwest of Tucumcari NM.
For a complete depiction of the watch see the associated watch
outline update (WOUS64 KWNS WOU8).
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 387...
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
24035.
...Guyer
WW 387 SEVERE TSTM IA IL MN WI 241855Z - 250300Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 387
NWS Storm Prediction Center Norman OK
155 PM CDT Wed Jun 24 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern Iowa
Northern Illinois
Southeast Minnesota
Wisconsin
* Effective this Wednesday afternoon and evening from 155 PM
until 1000 PM CDT.
* Primary threats include...
Scattered large hail likely with isolated very large hail events
to 2 inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...Scattered strong to severe thunderstorms will further
develop through mid/late afternoon with bouts of severe hail and
damaging winds as the primary hazards.
The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 50 miles north northeast
of Wausau WI to 35 miles east southeast of Moline IL. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU7).
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.
&&
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 500. Mean storm motion vector
28025.
...Guyer
WW 0390 Status Updates
STATUS FOR WATCH 0390 HAS NOT BEEN ISSUED YET
WW 0389 Status Updates
STATUS FOR WATCH 0389 HAS NOT BEEN ISSUED YET
WW 0388 Status Updates
STATUS FOR WATCH 0388 HAS NOT BEEN ISSUED YET
WW 0387 Status Updates
STATUS REPORT ON WW 387
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 N PIA TO
35 W MMO TO 15 W JVL TO 25 N MSN TO 40 WNW OSH TO 40 S ESC.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1303
..CHALMERS..06/25/26
ATTN...WFO...ARX...DVN...LOT...GRB...MKX...
STATUS REPORT FOR WS 387
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC007-031-037-043-063-089-091-093-097-099-103-105-111-141-197-
201-250240-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BOONE COOK DE KALB
DUPAGE GRUNDY KANE
KANKAKEE KENDALL LAKE
LA SALLE LEE LIVINGSTON
MCHENRY OGLE WILL
WINNEBAGO
INC089-127-250240-
IN
. INDIANA COUNTIES INCLUDED ARE
LAKE PORTER
WIC009-015-021-027-039-047-055-059-071-079-087-089-101-117-127-
MD 1303 CONCERNING SEVERE THUNDERSTORM WATCH 387... FOR PORTIONS OF NORTHEASTERN ILLINOIS INTO NORTHWESTERN INDIANA
Mesoscale Discussion 1303
NWS Storm Prediction Center Norman OK
0806 PM CDT Wed Jun 24 2026
Areas affected...portions of northeastern Illinois into northwestern
Indiana
Concerning...Severe Thunderstorm Watch 387...
Valid 250106Z - 250230Z
The severe weather threat for Severe Thunderstorm Watch 387
continues.
SUMMARY...The severe threat will gradually diminish over the next
1-2 hours. Isolated large hail, damaging wind gusts, and perhaps a
brief tornado remain possible in the meantime.
DISCUSSION...Scattered strong to severe thunderstorms remain ongoing
across portions of northeastern Illinois and are beginning to spread
into northwestern Indiana as of 0100 UTC. A mixed storm mode of
supercells and clusters has produced sporadic large hail and
damaging wind reports over the past 1-2 hours, and this threat is
expected to persist east-southeastward into far northwestern
Indiana, with isolated large hail, damaging wind gusts, and perhaps
a brief tornado remaining possible. Objective analysis indicates
that available buoyancy decreases rapidly with eastward extent,
however. Coupled with the onset of low-level nocturnal
cooling/stabilization and the eastward progression of the attendant
mid-level shortwave trough, this will result in a gradually
diminishing severe threat over the next couple of hours. A local
watch extension could be needed should a stronger storm or two
persist through the expiration time of Severe Thunderstorm Watch 387
at 0300 UTC, but additional watch issuance is not anticipated at
this time.
..Chalmers.. 06/25/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...IWX...LOT...DVN...
LAT...LON 42278925 42438890 42418821 42168719 41788692 41298688
40878710 40708750 40778834 41138912 41808957 42098950
42278925
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
MD 1302 CONCERNING TORNADO WATCH 389... FOR PORTIONS OF SOUTHEASTERN WYOMING INTO NORTHEASTERN COLORADO AND WESTERN NEBRASKA PANHANDLE
Mesoscale Discussion 1302
NWS Storm Prediction Center Norman OK
0747 PM CDT Wed Jun 24 2026
Areas affected...portions of southeastern Wyoming into northeastern
Colorado and western Nebraska Panhandle
Concerning...Tornado Watch 389...
Valid 250047Z - 250145Z
The severe weather threat for Tornado Watch 389 continues.
SUMMARY...Severe hail and wind remain a concern with the more robust
storms across portions of the central High Plains. An isolated
tornado risk will also continue for at least a few more hours.
DISCUSSION...Multiple supercells have oscillated in intensity across
portions of southeastern WY into northeastern CO and western NE
Panhandle, some of which have produced severe hail/gusts.
Furthermore, at least one brief tornado reported in northeastern CO
over the past hour. These storms are benefiting from a favorable
kinematic and thermodynamic ambient environment, characterized by
2500-3500 J/kg MLCAPE and up to 60 kts of effective bulk shear per
00Z mesoanalysis. Storms closest to an effective baroclinic boundary
also have the advantage of ingesting locally higher effective SRH,
ranging from 200-500 m2/s2. The current thinking is that storms will
continue to pulse in intensity through the remainder of daylight
hours, producing severe wind and hail at their peak moments of
intensity/organization. Additionally, isolated tornadoes will remain
possible with mature supercells within the baroclinic zone.
..Squitieri.. 06/25/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GLD...BOU...CYS...
LAT...LON 39560298 39490377 39530438 39670489 39770494 42140570
42670532 42870450 42620376 42100318 41660285 41090266
40470268 40010274 39560298
MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0759 PM CDT Wed Jun 24 2026
Valid 250100Z - 251200Z
...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS TONIGHT ACROSS
PARTS OF NORTHEASTERN COLORADO INTO NORTHWESTERN KANSAS...
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS EVENING
ACROSS PARTS OF THE UPPER MIDWEST AND THE GREAT BASIN...
...SUMMARY...
Scattered severe storms accompanied by large hail may gradually
evolve into an organizing cluster with increasing potential to
produce damaging wind gusts across parts of northeastern Colorado
into parts of southwestern Nebraska and western Kansas tonight.
...01Z Update...
...Front Range into adjacent central Great Plains...
Warm advection based near the 700 mb level, near the northeastern
periphery of a plume of elevated mixed-layer air lingering to the
east of the Front Range, is becoming the focus for increasing
thunderstorm development across and east-southeast of the Cheyenne
Ridge vicinity. This seems likely to continue to grow upscale
during the next few hours, aided by inflow of seasonably moist
boundary-layer air emanating from along and south of a stalled to
slowly southwestward advancing surface front across this region
through the central Nebraska/Kansas state border vicinity.
Beneath 20 kt westerly deep-layer mean flow (but strongly sheared
due to pronounced veering of winds from easterly to westerly with
height), this activity probably will gradually organize as it
propagates east-southeastward this evening, and pose increasing
potential for strong to severe surface gusts. Strongest gusts and
highest severe wind probabilities may eventually focus on the
southwestern flank of the evolving system across parts of east
central Colorado into northwest/west central Kansas, near the nose
of a modest (30+ kt around 850 mb) southeasterly boundary-layer jet.
...Southern Wisconsin/Northern Illinois...
Low-level moistening is maintaining boundary-layer instability in a
pre-frontal corridor across west central through northeastern
Illinois early this evening. As larger-scale mid-level troughing
continues to slowly dig across the Upper Midwest/Great Lakes region,
forcing for ascent may maintain vigorous thunderstorm development
posing a risk for severe hail and wind across parts of southeastern
Wisconsin/northeastern Illinois into portions of northwestern
Indiana into mid to late evening.
..Kerr.. 06/25/2026
SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0459 PM CDT Wed Jun 24 2026
Valid 261200Z - 021200Z
...Synopsis...
A robust fire weather pattern is expected across an expansive
portion of the Intermountain West through the middle of next week.
Preceding dry thunderstorms on Days 1-2/Wednesday-Thursday followed
by multiple days of exceptionally dry and breezy conditions will
promote significant fire weather concerns for any new ignitions,
lightning holdovers, and ongoing large fires across the western
CONUS.
Forecast guidance continues to show a major, seasonally abnormal
trough on Day 3/Friday into Day 5/Sunday, posing considerable fire
weather concerns for the Great Basin and much of the Southwest. A
strong cold front and accompanying wind shift (from broadly
southwesterly to northerly) will push through the region sometime on
Sunday. This wind shift and associated wind gusts may further
exacerbate ongoing wildfires and control efforts, and will be
monitored closely as timing is better resolved in future outlooks.
...Days 3-5/Friday-Sunday...
An unseasonably strong mid-level jet overspreads much of the
Interior West late this week as an upper trough amplifies across the
Northwestern U.S., scouring out remaining meaningful atmospheric
moisture across the Southwest. Latest forecast guidance suggests a
corridor of stronger southwest winds of 25-35 mph developing under
the stronger jet across northern AZ into the Great Basin on Day
3/Friday, shifting to northeastern AZ into the CO Plateau by Day
4/Saturday. The potential for extremely critical fire weather
conditions may exist where single-digit RH and very strong sustained
winds overlap receptive fuels that did not receive appreciable
precipitation earlier in the week. Several days of poor overnight
humidity recoveries and residual gusty winds will further intensify
the fire environment.
Critical fire weather conditions will persist across northern AZ and
the CO Plateau on Day 5/Sunday as the mid-level jet translates
eastward to the northern Plains. Primary changes for this outlook
were the introduction of 70% Critical probabilities on Day 5/Sunday
as confidence continues to increase in an appreciable multi-day wind
event, impacting ongoing wildfire growth and the emergence of any
nascent wildfires born from thunderstorm activity mid-week.
...Days 6-7/Monday-Tuesday...
Elevated southwesterly flow associated with persistent upper-level
troughing across the West should support a prolonged fire weather
threat across the CO Plateau, Great Basin and parts of the
Southwest. As such, 40% Critical probabilities have been maintained.
Fuels are expected to remain quite receptive through the extended
forecast period with minimal-to-no chances of precipitation this
weekend into early next week.
As high pressure builds over the central and eastern CONUS, above
normal temperatures and overall drier conditions may encourage fire
weather concerns to emerge where receptive fuels exist.
..Elizalde-Garcia.. 06/24/2026
...Please see www.spc.noaa.gov/fire for graphic product...
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