RSS Mesoscale Discussions from Storm Prediction Center
WW 139 SEVERE TSTM IA MO 240200Z - 240500Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 139
NWS Storm Prediction Center Norman OK
900 PM CDT Thu Apr 23 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast Iowa
Northeast Missouri
* Effective this Thursday night from 900 PM until Midnight CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1.5 inches in diameter possible
A tornado or two possible
SUMMARY...A line of thunderstorms over northern Missouri and central
Iowa will track eastward into eastern Iowa this evening, with a
continued risk of locally damaging wind gusts or perhaps a tornado.
The severe thunderstorm watch area is approximately along and 35
statute miles east and west of a line from 65 miles northeast of
Ottumwa IA to 55 miles south southeast of Ottumwa IA. 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 136...WW 137...WW 138...
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
25030.
...Hart
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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
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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
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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
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WW 0139 Status Updates
STATUS FOR WATCH 0139 HAS NOT BEEN ISSUED YET
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WW 0138 Status Updates
STATUS REPORT ON WW 138
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SE TOP TO
15 ENE FLV TO 20 SSE LWD TO 15 WSW OXV TO 55 SSW LSE.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0511
..MOORE..04/24/26
ATTN...WFO...DMX...ARX...EAX...
STATUS REPORT FOR WS 138
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC007-013-051-099-117-123-125-135-157-171-179-185-240340-
IA
. IOWA COUNTIES INCLUDED ARE
APPANOOSE BLACK HAWK DAVIS
JASPER LUCAS MAHASKA
MARION MONROE POWESHIEK
TAMA WAPELLO WAYNE
KSC091-107-121-209-240340-
KS
. KANSAS COUNTIES INCLUDED ARE
JOHNSON LINN MIAMI
WYANDOTTE
MOC013-025-037-047-049-061-079-095-117-129-171-177-211-240340-
MO
Read more
WW 0137 Status Updates
STATUS FOR WATCH 0137 HAS NOT BEEN ISSUED YET
Read more
WW 0136 Status Updates
STATUS REPORT ON WW 136
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 ENE AVK
TO 35 SSW HUT TO 25 E HUT TO 15 WNW EMP TO 15 WSW TOP TO 30 NNW
TOP TO 10 WNW FNB.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0510
..JEWELL..04/24/26
ATTN...WFO...ICT...TOP...
STATUS REPORT FOR WT 136
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KSC001-003-013-015-017-019-031-035-045-049-059-073-077-079-085-
087-095-111-115-139-173-177-191-197-205-207-240140-
KS
. KANSAS COUNTIES INCLUDED ARE
ALLEN ANDERSON BROWN
BUTLER CHASE CHAUTAUQUA
COFFEY COWLEY DOUGLAS
ELK FRANKLIN GREENWOOD
HARPER HARVEY JACKSON
JEFFERSON KINGMAN LYON
MARION OSAGE 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.
Read more
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.
Read more
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
Read more
MD 0513 CONCERNING SEVERE THUNDERSTORM WATCH 138... FOR CENTRAL TO EASTERN IOWA
Mesoscale Discussion 0513
NWS Storm Prediction Center Norman OK
0859 PM CDT Thu Apr 23 2026
Areas affected...Central to eastern Iowa
Concerning...Severe Thunderstorm Watch 138...
Valid 240159Z - 240330Z
The severe weather threat for Severe Thunderstorm Watch 138
continues.
SUMMARY...A squall line is beginning to weaken across central Iowa,
but some severe threat may extend downstream into eastern Iowa. A
watch has been issued to address this concern.
DISCUSSION...Lightning counts and vertically integrated liquid
trends continue to decline withing a squall line moving across
central IA. Additionally, KDMX imagery depicts portions of the line
starting to become outflow dominant. However, downstream low-level
wind shear (25-30 knots 0-1 km BWD) remains favorable for localized
bowing segments that may produce embedded circulations and/or swaths
of severe winds. This threat will most likely manifest where ever
the updraft/downdraft convergence zone can remain balanced and
support strong updrafts atop the low-level convergence zone.
Consequently, some localized severe wind and brief tornado threat
may linger downstream into eastern IA over the next few hours where
dewpoints remain in the low 60s and MLCAPE remains near 1000 J/kg.
..Moore.. 04/24/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...DVN...DMX...EAX...
LAT...LON 40649365 41739287 42049259 42139237 42159168 42099103
41909067 41729060 41459081 40559163 40469265 40479323
40519355 40649365
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
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MD 0512 CONCERNING TORNADO WATCH 137... FOR NORTH CENTRAL OKLAHOMA
Mesoscale Discussion 0512
NWS Storm Prediction Center Norman OK
0840 PM CDT Thu Apr 23 2026
Areas affected...north central Oklahoma
Concerning...Tornado Watch 137...
Valid 240140Z - 240345Z
The severe weather threat for Tornado Watch 137 continues.
SUMMARY...The risk of tornadoes remains concentrated over
north-central Oklahoma for the next few hours.
DISCUSSION...Supercells have been producing strong tornadoes, most
recently with a lone storm along the dryline and just south of Enid
OK, with others within the complex storm cluster from Kay into Osage
counties. The large CAPE, steep midlevel lapse rate environment
continues to support tremendous updrafts, while the low-level jet
increases in speed, enhancing shear.
Even if storms eventually merge, the strong low-level shear and
ample instability will still favor periodic rotation/tornadoes,
along with damaging winds later this evening.
..Jewell.. 04/24/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...TSA...ICT...OUN...
LAT...LON 36969698 37089628 36939595 36639596 36319638 36219689
36129787 36199808 36329797 36629775 36969698
MOST PROBABLE PEAK TORNADO INTENSITY...140-170 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN
Read more
MD 0511 CONCERNING SEVERE THUNDERSTORM WATCH 138... FOR IOWA INTO NORTHWEST MISSOURI
Mesoscale Discussion 0511
NWS Storm Prediction Center Norman OK
0741 PM CDT Thu Apr 23 2026
Areas affected...Iowa into northwest Missouri
Concerning...Severe Thunderstorm Watch 138...
Valid 240041Z - 240245Z
The severe weather threat for Severe Thunderstorm Watch 138
continues.
SUMMARY...A severe threat continues across central IA into northwest
Missouri as a squall line continues east. Damaging winds will remain
the primary concern.
DISCUSSION...A squall line continues to progress east across central
IA and northwest MO. Wind observations from along the line have
largely remained in the 40-55 mph range, though pockets of stronger
velocities embedded within the line are apparent in regional radars,
and a gust up to 65 mph was recently observed near Winterset, IA.
Additionally, weak embedded circulations are evident near KDMX in
proximity to the RDA, and are mainly associated with broken portions
of the line where updraft/downdraft convergence zones are more
zonally oriented. KDMX VWP observations recently sampled around 25
knots of southerly 0-1 km bulk shear, which should continue to
support the potential for brief circulations within any broken or
locally bowing section of the line. However, the overall tornado
threat should remain low as MLCAPE begins to degrade with the onset
of nocturnal cooling/stabilization. Additionally, lightning counts
have been declining over the past hour, suggesting that this may be
onset of a weakening trend that has been anticipated by high-res
guidance after 00 UTC. Consequently, the severe threat should wane
further over the next few hours.
..Moore.. 04/24/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...DVN...ARX...DMX...EAX...
LAT...LON 42779205 41739253 41069299 40599336 40169391 39919432
39769463 39759487 39819507 39919524 40189504 40479478
41609406 42419358 42909337 43029332 43169295 43249245
43229212 43109205 42779205
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
Read more
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0759 PM CDT Thu Apr 23 2026
Valid 240100Z - 241200Z
...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS ARTS OF
EASTERN KANSAS AND NORTHERN OKLAHOMA...
...SUMMARY...
Scattered severe thunderstorms will continue this evening from parts
of the southern and central Plains north-northeastward into the
lower Missouri and upper Mississippi Valleys. Tornadoes, large hail
and severe wind gusts are expected.
...Southern and Central Plains...
Latest water vapor imagery shows an upper-level trough over the
Great Plains, with an associated mid-level jet streak moving through
the base of the trough into the southern Plains. At the surface, a
cold front is advancing southeastward across far southeast Nebraska,
east-central Kansas and far northern Oklahoma. Ahead of the front,
multiple line segments are ongoing. These broken lines are embedded
with discrete to semi-discrete supercells. The storms are located
along an axis of moderate to strong instability, with the RAP
showing MLCAPE in the 2500 to 3500 J/kg range. Over the top of this
moist and unstable airmass, flow is westerly around 50 knots. This
is creating moderate to strong deep-layer shear which will continue
to support supercells this evening. Steep mid-level lapse rates
approaching 8 C/km will be favorable for large hail. In addition,
the western edge of a 40 to 50 knot low-level jet will remain in
place over eastern Kansas. WSR-88D VWPs that are sampling the
low-level jet have 0-3 km storm-relative helicity in the 400 to 450
m2/s2 range, which will support a continued tornado threat. In
addition, a threat for wind damage will also continue through the
mid to late evening...see MCD 510.
...Lower Missouri Valley/Upper Mississippi Valley...
Southwesterly mid-level flow is in place over much of the
north-central U.S. At the surface, a cold front is located from
central Minnesota south-southwestward into the mid Missouri Valley.
A line of strong to severe thunderstorms is ongoing ahead of the
front from far southeastern Minnesota into central Iowa and far
northwestern Missouri. Moderate instability is analyzed ahead of the
line, with the RAP showing MLCAPE in the 1500 to 2000 J/kg range.
The thermodynamic environment will continue to be favorable for
isolated large hail. In addition, a 40 to 50 knot jet is analyzed
over east-central Iowa. As the low-level jet strengthens, tornadoes
will be possible with rotating cells embedded in the line. As the
line continues to move eastward through the mid to late evening,
wind damage will be possible with embedded supercells and bowing
line segments.
..Broyles.. 04/24/2026
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