WW 138 SEVERE TSTM IA KS MO 232255Z - 240500Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 138
NWS Storm Prediction Center Norman OK
555 PM CDT Thu Apr 23 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central Iowa
Northeast Kansas
Northwest Missouri
* Effective this Thursday afternoon from 555 PM until Midnight
CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
A tornado or two possible
SUMMARY...A line of intense storms extending from northeast Kansas
into central Iowa will track eastward across the watch area through
the evening. The strongest cells will pose a risk of damaging winds
and hail. A tornado or two is also possible.
The severe thunderstorm watch area is approximately along and 50
statute miles east and west of a line from 35 miles northeast of
Mason City IA to 50 miles south southeast of Olathe KS. 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 134...WW 135...WW
136...WW 137...
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
25030.
...Hart
WW 137 TORNADO OK 232210Z - 240400Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 137
NWS Storm Prediction Center Norman OK
510 PM CDT Thu Apr 23 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Central Oklahoma
* Effective this Thursday afternoon and evening from 510 PM until
1100 PM CDT.
* Primary threats include...
A few tornadoes likely with a couple intense tornadoes possible
Scattered large hail and isolated very large hail events to 3
inches in diameter likely
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Thunderstorms are beginning to develop in north-central
Oklahoma along a dryline/cold front. Other isolated storms may
develop this evening farther south along the dryline into southwest
Oklahoma. Supercells capable of very large hail and a few tornadoes
are possible.
The tornado watch area is approximately along and 45 statute miles
east and west of a line from 20 miles north of Ponca City OK to 25
miles east of Fort Sill OK. For a complete depiction of the watch
see the associated watch outline update (WOUS64 KWNS WOU7).
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 134...WW 135...WW 136...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 3 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 25030.
...Hart
WW 136 TORNADO KS 231905Z - 240200Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 136
NWS Storm Prediction Center Norman OK
205 PM CDT Thu Apr 23 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Central and Eastern Kansas
* Effective this Thursday afternoon and evening from 205 PM until
900 PM CDT.
* Primary threats include...
A few tornadoes likely with a couple intense tornadoes possible
Widespread large hail and isolated very large hail events to 3.5
inches in diameter likely
Scattered damaging winds likely with isolated significant gusts
to 80 mph possible
SUMMARY...Intense storm development is expected initially across
parts of northern/east-central Kansas through late afternoon,
becoming more scattered/widespread into this evening across the
remainder of eastern Kansas. All severe hazards are expected,
including tornadoes, very large hail and damaging winds.
The tornado watch area is approximately along and 60 statute miles
east and west of a line from 65 miles north northeast of Manhattan
KS to 45 miles south southeast of Wichita KS. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU6).
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 134...WW 135...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 3.5 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 550. Mean
storm motion vector 25030.
...Guyer
WW 135 SEVERE TSTM MN WI 231845Z - 240100Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 135
NWS Storm Prediction Center Norman OK
145 PM CDT Thu Apr 23 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southern and Eastern Minnesota
Western Wisconsin
* Effective this Thursday afternoon and evening from 145 PM until
800 PM CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Scattered large hail events to 1.5 inches in diameter possible
A tornado or two possible
SUMMARY...Storms are expected to intensify through mid/late
afternoon initially across southern/central Minnesota, before
spreading into western Wisconsin later this afternoon and evening.
The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 20 miles east southeast
of Fairmont MN to 60 miles northeast of Saint Cloud MN. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU5).
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 134...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
23030.
...Guyer
WW 0138 Status Updates
STATUS FOR WATCH 0138 HAS NOT BEEN ISSUED YET
WW 0137 Status Updates
STATUS FOR WATCH 0137 HAS NOT BEEN ISSUED YET
WW 0136 Status Updates
STATUS REPORT ON WW 136
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 S P28 TO
5 ESE HUT TO 25 W MHK TO 20 E BIE.
..JEWELL..04/23/26
ATTN...WFO...ICT...TOP...
STATUS REPORT FOR WT 136
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KSC001-003-013-015-017-019-031-035-041-045-049-059-061-073-077-
079-085-087-095-111-115-117-127-131-139-149-161-173-177-191-197-
205-207-232340-
KS
. KANSAS COUNTIES INCLUDED ARE
ALLEN ANDERSON BROWN
BUTLER CHASE CHAUTAUQUA
COFFEY COWLEY DICKINSON
DOUGLAS ELK FRANKLIN
GEARY GREENWOOD HARPER
HARVEY JACKSON JEFFERSON
KINGMAN LYON MARION
MARSHALL MORRIS NEMAHA
OSAGE POTTAWATOMIE RILEY
SEDGWICK SHAWNEE SUMNER
WABAUNSEE WILSON WOODSON
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
WW 0135 Status Updates
STATUS REPORT ON WW 135
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 WNW MCW
TO 30 SSE MSP TO 65 SW ASX.
..MOORE..04/24/26
ATTN...WFO...MPX...FSD...ARX...DLH...
STATUS REPORT FOR WS 135
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC039-047-049-099-109-147-157-240140-
MN
. MINNESOTA COUNTIES INCLUDED ARE
DODGE FREEBORN GOODHUE
MOWER OLMSTED STEELE
WABASHA
WIC005-033-091-093-109-240140-
WI
. WISCONSIN COUNTIES INCLUDED ARE
BARRON DUNN PEPIN
PIERCE ST. CROIX
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
WW 0134 Status Updates
STATUS REPORT ON WW 134
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SSE BIE
TO 25 SW SDA TO 35 E OMA TO 35 ENE DNS TO 15 WNW FOD TO 10 N FRM.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0507
..MOORE..04/23/26
ATTN...WFO...DMX...FSD...OAX...EAX...
STATUS REPORT FOR WT 134
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC009-029-071-073-077-081-091-109-137-145-187-189-197-240040-
IA
. IOWA COUNTIES INCLUDED ARE
AUDUBON CASS FREMONT
GREENE GUTHRIE HANCOCK
HUMBOLDT KOSSUTH MONTGOMERY
PAGE WEBSTER WINNEBAGO
WRIGHT
MOC005-240040-
MO
. MISSOURI COUNTIES INCLUDED ARE
ATCHISON
NEC127-133-147-240040-
NE
MD 0510 CONCERNING TORNADO WATCH 136... FOR SOUTHEAST KANSAS INTO NORTHERN OKLAHOMA
Mesoscale Discussion 0510
NWS Storm Prediction Center Norman OK
0650 PM CDT Thu Apr 23 2026
Areas affected...southeast Kansas into northern Oklahoma
Concerning...Tornado Watch 136...
Valid 232350Z - 240215Z
The severe weather threat for Tornado Watch 136 continues.
SUMMARY...Supercells producing very large hail and a few tornadoes
is most probable over northern Oklahoma into southeast Kansas next
few hours.
DISCUSSION...Storms along the dryline have consolidated into a
substantial supercell near the OK/KS border recently, within the
instability axis. Just north of Wichita, the cold front is pushing
south and invigorating convection there as well, although the mode
has become linear. Meanwhile, visible satellite shows possible new
developing extending even farther southwest along the dryline into
OK, west of Enid.
The greatest severe risk including tornadoes and large hail will
likely peak from now through the next couple hours while the
boundary layer is warmest. Though the low-level jet will increase
this evening, the cooling surface temperatures and surging cold
front will eventually result in linear storm mode, with damaging
gusts possible. Until then, the cells ahead of the cold front will
continue to pose a periodic tornado and hail risk.
..Jewell.. 04/23/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...TSA...TOP...ICT...OUN...
LAT...LON 37069760 37589746 37889735 38169718 38399663 38459587
38299571 37859579 37179604 36769620 36519677 36349763
36189789 36199809 36249820 36689800 37069760
MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN
MD 0509 CONCERNING SEVERE THUNDERSTORM WATCH 135... FOR SOUTHEAST MINNESOTA AND PARTS OF WESTERN WISCONSIN
Mesoscale Discussion 0509
NWS Storm Prediction Center Norman OK
0556 PM CDT Thu Apr 23 2026
Areas affected...Southeast Minnesota and parts of western Wisconsin
Concerning...Severe Thunderstorm Watch 135...
Valid 232256Z - 240100Z
The severe weather threat for Severe Thunderstorm Watch 135
continues.
SUMMARY...A severe hail threat continues for southern portions of WW
135 - predominantly across southeastern Minnesota and parts of
western Wisconsin.
DISCUSSION...Over the past hour, convection along and north of the
I-94 corridor has largely maintained intensity or weakened per Prob
Severe and MRMS metrics. This may be attributable to diminishing
buoyancy amid convective overturning, which is noted in recent RAP
mesoanalysis 700-500 mb lapse rate analyses. However, across
southeastern MN and western WI, a buoyant air mass remains in place
with around 1500 J/kg MLCAPE residing across the region. Upstream
convection coming out of northern IA has recently shown an uptick in
intensity (GOES IR temps and lightning counts) as it migrates into
this air mass. Semi-discrete convection will pose a large hail
threat for the near term, but continued upscale growth along the
front will likely promote an increase in severe wind potential near
and after 00 UTC as the northern IA activity spreads
north/northeast.
..Moore.. 04/23/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ARX...MPX...
LAT...LON 43519407 43559437 43889449 44229433 44929389 45139357
45179295 45029232 44789185 44459149 44179137 43949140
43669162 43539181 43509197 43519407
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN
MD 0508 CONCERNING TORNADO WATCH 137... FOR SOUTHWEST INTO SOUTH-CENTRAL OKLAHOMA
Mesoscale Discussion 0508
NWS Storm Prediction Center Norman OK
0526 PM CDT Thu Apr 23 2026
Areas affected...southwest into south-central Oklahoma
Concerning...Tornado Watch 137...
Valid 232226Z - 240130Z
The severe weather threat for Tornado Watch 137 continues.
SUMMARY...Conditions are favorable for a supercell or two, with very
large hail and tornado risk primarily over southwest into
south-central Oklahoma.
DISCUSSION...Visible satellite imagery shows towering CU along the
dryline from southwest OK where temperatures have risen into the 90s
F. Meanwhile, gusty south/southeast winds have maintained upper 60s
F dewpoints east of the dryline. Given cool midlevel temperatures
and steep lapse rates, this is resulting in an area of very strong
instability.
Notably, GPS PWAT sensors indicate relatively greater values near
the Red River and south into TX, while drier air aloft is more
evident into central OK currently.
The dryline is expected to back westward later this evening, while
the low-level jet also increases rapidly into the 40-50 kt range.
Since the moist sector is not cool, the entire area should remain
quite unstable, and several models suggest an isolated supercell
will be possible. If this occurs, very large hail and a tornado risk
is evident. Forecast hodographs indicate a relatively slow storm
motion to the east for a right-moving supercell.
..Jewell/Hart.. 04/23/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...OUN...
LAT...LON 34749908 35139890 35259862 35289806 35259784 35209769
35119758 34829751 34519764 34369806 34279905 34399923
34749908
MOST PROBABLE PEAK TORNADO INTENSITY...120-145 MPH
MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN
SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
Issued by 15th OWS Scott Air Force Base IL
0245 PM CDT Thu Apr 23 2026
Valid 232000Z - 241200Z
...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS NORTH CENTRAL
MINNESOTA...EASTERN KANSAS...NORTHERN OKLAHOMA...
...SUMMARY...
Severe thunderstorms are expected to develop this afternoon and
evening from the southern through central Plains and Minnesota into
the lower to mid Missouri Valley, and upper Mississippi Valley.
Tornadoes, large hail and severe wind gusts will be possible.
...MN/IA to KS/northern OK this afternoon into tonight...
The interaction of a southeastward moving midlevel trough over
southern BC/AB and a northeastward moving trough over the western
Dakotas will lead to the formation of a deep closed low over
southern SK. An associated, occluding surface cyclone will weaken
across southern MB by this evening, as a trailing cold front moves
across MN/IA/KS/MO and northern OK. Low-level moisture will spread
northward across IA/MN in advance of the cold front, beneath the
northeast edge of an elevated mixed layer. Surface heating and the
degree of buoyancy may be limited by extensive clouds from IA into
MN, and forecast wind profiles show complex/messy hodographs
structures (stronger low-level shear lingering across IA). Mixed
convective modes are expected along and ahead of the front this
afternoon, which could produce occasional wind damage, large hail
and perhaps a couple of tornadoes.
The more substantial severe threat is expected late this afternoon
through late evening from eastern KS into northern OK, near and just
northeast of a cold front/dryline triple point and weak secondary
cyclone. A midlevel speed max near the Four Corners will progress
eastward to the TX Panhandle by this evening, with ascent in the
left exit region of the jet coincident with the triple point near or
just north of the KS/OK border. An influx of mid 60s boundary-layer
dewpoints beneath steep midlevel lapse rates will contribute to
MLCAPE of 2000-3000 J/kg, with weakening convective inhibition
across KS by mid afternoon.
Storm development is expected along the cold front in KS by mid
afternoon, with storms expected to develop southward to near the
triple point. The large buoyancy, steep midlevel lapse rates and
deep-layer shear sufficient for supercells will favor very large
hail (2-3 inches in diameter) with the initial/more discrete storms.
The tornado threat will peak this evening as low-level
shear/hodograph curvature increase near the KS/OK border - there
will be strong tornado potential with the anchor/southern supercells
near the triple point. Upscale storm growth and cold pool
development will favor a more linear convective mode with occasional
wind damage as the outflow/effective cold front spreads
southeastward into northeast OK and southwest MO overnight.
...OK dryline this evening...
Storm development along the dryline in OK is uncertain late this
afternoon/evening. Forecast soundings suggest that the degree of
surface heating/mixing along the dryline and residence time in the
dryline circulation will be close to supporting deep convection. If
storms do form, the environment will conditionally favor very large
hail initially, and the possibility of an evening tornado threat
with any sustained storm.
..Afwa.. 04/23/2026
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0230 PM CDT Thu Apr 23 2026
Valid 251200Z - 261200Z
...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS FROM
SOUTH-CENTRAL KANSAS INTO CENTRAL/EASTERN OKLAHOMA AND FAR NORTHWEST
ARKANSAS...
...SUMMARY...
Severe thunderstorms will likely develop across portions of Oklahoma
and Kansas during the late afternoon and evening. These storms will
pose a risk of very large hail, damaging winds, and a couple of
tornadoes. Isolated severe thunderstorms may also develop across
portions of Texas.
...Synopsis...
Increasingly diffluent southwest flow will overspread parts of the
southern and central Plains on Saturday, as the midlevel pattern
responds to a strong shortwave trough/vorticity maximum moving into
the Southwest. This will induce strong southerly winds across the
Plains, helping to draw an outflow-influenced frontal boundary
northward. This boundary is currently forecast to be oriented from
northwest to southeast across portions of Oklahoma by late Saturday.
...Parts of KS/OK/TX into the ArkLaTex and Lower MS Valley...
No changes have been made to the Enhanced Risk. Rich moisture, steep
midlevel lapse rates, and diurnal heating will result in strong
destabilization across parts of the southern Plains, with at least
moderate destabilization into parts of KS. Large-scale ascent will
be subtle at best during the day, but isolated storm development
will be possible by late afternoon in the vicinity of the diffuse
warm front extending from eastern OK into southern KS and vicinity.
Favorable deep-layer shear combined with the moderate to strong
buoyancy will favor initial supercell development, with a threat of
very large hail and potentially a couple tornadoes (especially near
the remnant boundary).
Some upscale growth will be possible into the evening, with
potential for an organized cluster or MCS to move southeastward
along the instability gradient towards parts of the ArkLaTex, and
potentially the lower MS Valley, before weakening. This evolution
could be accompanied by an increasing damaging-wind threat, along
with isolated hail and/or tornado potential with any embedded
supercells.
Farther south, a conditionally favorable environment will be in
place during the afternoon along/east of the effective dryline, from
southwest OK into TX. Despite the lack of notable large-scale
ascent, isolated storms may develop due to weakening CINH and
heating to convective temperatures. Any storms that can mature
within this environment could evolve into supercells with large to
very large hail potential. The Marginal Risk has been expanded
southwestward across TX, where some global and extended CAM guidance
shows a signal for sustained development during the late afternoon.
..Dean.. 04/23/2026
SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0410 PM CDT Thu Apr 23 2026
Valid 251200Z - 011200Z
...Synopsis...
A large scale upper trough will persist over the central U.S. and
Canada border through Day 4/Sunday. An upper ridge over the eastern
U.S. will break down as a mid-level shortwave approaches on Day
3/Saturday and widespread precipitation chances return, bringing
much needed relief to exceptionally dry fuels across the Piedmont
and Southeast. A secondary shortwave trough will move into the
Southwest on Day 4/Sunday with increasing southwest flow aloft,
inducing lee cyclogenesis over the central Plains. This pattern
change will bring widespread chances for precipitation across
portions of the High Plains into the Upper Midwest and Mid-South
through Day 6/Tuesday. However, in areas that do not see appreciable
rainfall, fire weather concerns are expected to linger. Towards the
end of the forecast period, an additional low-amplitude trough is
forecast to approach the southwestern U.S. Given the overall
pattern, fire weather conditions should persist where fuels remain
receptive.
...Day 3/Saturday and Day 4/Sunday - Southern Plains into portions
of the Southwest...
As upper troughing persists across the north-central U.S., strong
zonal flow over the Southwest will encourage very breezy and
continued dry conditions on Day 3/Saturday. With preceding days of
Critical fire weather conditions, westerly downslope flow of 15-20
mph and 10-15 percent RH atop dry fuels will further exacerbate the
fire environment, supportive of 40% Critical probabilities on Day
3/Saturday. A strong mid-level disturbance is forecast to cross over
the High Plains on Day 4/Sunday, resulting in lee cyclogenesis over
portions of eastern CO and western KS. Behind an emerging dryline,
westerly downslope flow is expected to promote very strong winds and
critically low RH overlapping a dry fuelscape. Both 40% and 70%
Critical probabilities have been maintained to encompass the
expansive fire weather threat.
As the upper trough shifts east across the Midwest, a dry airmass
will persist over the Southwest and southern Plains early next week.
Breezy conditions may emerge in advance of an approaching upper
trough later in the forecast period, albeit model guidance varies in
the timing and strength of the overall upper pattern. Thus, guidance
ambiguity precludes the introduction of probabilities at this time.
..Elizalde-Garcia.. 04/23/2026
...Please see www.spc.noaa.gov/fire for graphic product...
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