WW 132 SEVERE TSTM AR KS MO OK 180145Z - 180700Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 132
NWS Storm Prediction Center Norman OK
845 PM CDT Fri Apr 17 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Far Northwest Arkansas
Extreme Southeast Kansas
Southwest and South-Central Missouri
Northern, Central, and Western Oklahoma
* Effective this Friday night and Saturday morning from 845 PM
until 200 AM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...A mix of mainly elevated supercells and some bowing
clusters should continue to pose a threat for scattered large hail
and damaging winds through the early morning hours. A tornado
appears possible if a supercell can become surface based along/south
of the cold front; but, confidence in this occurring is low.
The severe thunderstorm watch area is approximately along and 40
statute miles north and south of a line from 45 miles west of
Clinton OK to 25 miles east southeast of Fort Leonard Wood MO. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU2).
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 130...WW 131...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
26040.
...Gleason
WW 131 TORNADO IL MO LM 172030Z - 180400Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 131
NWS Storm Prediction Center Norman OK
330 PM CDT Fri Apr 17 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Central and Northeast Illinois
Northeast Missouri
Lake Michigan
* Effective this Friday afternoon and evening from 330 PM until
1100 PM CDT.
* Primary threats include...
A couple tornadoes possible
Widespread damaging winds likely with isolated significant gusts
to 75 mph possible
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
SUMMARY...Thunderstorms have intensified across northeast MO, with
some additional intensification possible as they continued
northeastward into central IL. The airmass across the region
supports supercells capable of all severe hazards, including very
large hail and tornadoes. Another round of storms will follow in the
wake of the ongoing storms later this evening as a cold front moves
across the region. Wind gusts will be the primary risk with the
storms along the front, but line-embedded circulations are possible
as well.
The tornado watch area is approximately along and 75 statute miles
east and west of a line from 50 miles west northwest of Valparaiso
IN to 30 miles southeast of Jefferson City MO. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
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 128...WW 129...WW 130...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2.5 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 27030.
...Mosier
WW 129 TORNADO IA IL MN MO WI 171740Z - 180100Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 129
NWS Storm Prediction Center Norman OK
1240 PM CDT Fri Apr 17 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Central and Eastern Iowa
Northern and West-Central Illinois
Southeast Minnesota
Far Northeast Missouri
Central and Southern Wisconsin
* Effective this Friday afternoon and evening from 1240 PM until
800 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 wind gusts to 70 mph likely
SUMMARY...A very moist and unstable airmass exists ahead of a cold
front progressing eastward/southeastward across the region.
Thunderstorm development is anticipated within the warm sector ahead
of the front, where discrete supercells capable of all severe
hazards, including very large hail and strong to intense tornadoes,
are possible. Thunderstorm development is possible along the front
as well, with large hail and strong gusts the primary risk with
these storms.
The tornado watch area is approximately along and 110 statute miles
north and south of a line from 55 miles north northwest of Des
Moines IA to 55 miles east of Madison WI. 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 128...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 3.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 26035.
...Mosier
WW 0132 Status Updates
STATUS FOR WATCH 0132 HAS NOT BEEN ISSUED YET
WW 0131 Status Updates
STATUS REPORT ON WW 131
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 NW COU TO
35 SSE UIN TO 10 NNW PIA TO 10 NE MKE.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0485
..MOORE..04/18/26
ATTN...WFO...LSX...ILX...LOT...
STATUS REPORT FOR WT 131
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC005-013-017-019-021-023-027-029-031-035-039-041-043-045-051-
053-061-063-075-083-089-091-093-097-105-107-113-115-117-119-121-
123-125-129-133-135-137-139-147-163-167-171-173-179-183-189-197-
203-180340-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BOND CALHOUN CASS
CHAMPAIGN CHRISTIAN CLARK
CLINTON COLES COOK
CUMBERLAND DE WITT DOUGLAS
DUPAGE EDGAR FAYETTE
FORD GREENE GRUNDY
IROQUOIS JERSEY KANE
KANKAKEE KENDALL LAKE
LIVINGSTON LOGAN MCLEAN
MACON MACOUPIN MADISON
MARION MARSHALL MASON
MENARD MONROE MONTGOMERY
MORGAN MOULTRIE PIATT
ST. CLAIR SANGAMON SCOTT
SHELBY TAZEWELL VERMILION
WW 0130 Status Updates
STATUS REPORT ON WW 130
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 N CSM TO
30 NNE PNC TO 10 NW CNU TO 55 S OJC.
..KERR..04/18/26
ATTN...WFO...ICT...TOP...EAX...DDC...SGF...OUN...TSA...
STATUS REPORT FOR WT 130
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KSC001-011-019-021-035-037-049-099-125-133-205-180140-
KS
. KANSAS COUNTIES INCLUDED ARE
ALLEN BOURBON CHAUTAUQUA
CHEROKEE COWLEY CRAWFORD
ELK LABETTE MONTGOMERY
NEOSHO WILSON
MOC011-013-015-029-039-041-053-083-085-089-101-121-125-131-141-
159-175-185-195-217-180140-
MO
. MISSOURI COUNTIES INCLUDED ARE
BARTON BATES BENTON
CAMDEN CEDAR CHARITON
COOPER HENRY HICKORY
HOWARD JOHNSON MACON
MARIES MILLER MORGAN
PETTIS RANDOLPH ST. CLAIR
SALINE VERNON
WW 0129 Status Updates
STATUS REPORT ON WW 129
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 ESE IRK
TO 20 S MLI TO 25 WSW JVL TO 30 ENE MSN TO 10 SE MTW.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0484
..MOORE..04/18/26
ATTN...WFO...ARX...DMX...DVN...LOT...MPX...GRB...MKX...
STATUS REPORT FOR WT 129
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC007-011-037-067-071-073-099-103-109-111-141-155-187-195-201-
180140-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BOONE BUREAU DE KALB
HANCOCK HENDERSON HENRY
LA SALLE LEE MCDONOUGH
MCHENRY OGLE PUTNAM
WARREN WHITESIDE WINNEBAGO
WIC055-059-079-089-101-105-117-127-131-133-180140-
WI
. WISCONSIN COUNTIES INCLUDED ARE
JEFFERSON KENOSHA MILWAUKEE
OZAUKEE RACINE ROCK
SHEBOYGAN WALWORTH WASHINGTON
WAUKESHA
WW 0128 Status Updates
STATUS REPORT ON WW 128
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SW LSE TO
10 WNW EAU TO 60 NNW EAU TO 25 E DLH.
..WENDT..04/17/26
ATTN...WFO...MPX...ARX...DLH...GRB...
STATUS REPORT FOR WS 128
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
WIC003-005-007-017-051-069-085-099-107-113-119-125-129-172240-
WI
. WISCONSIN COUNTIES INCLUDED ARE
ASHLAND BARRON BAYFIELD
CHIPPEWA IRON LINCOLN
ONEIDA PRICE RUSK
SAWYER TAYLOR VILAS
WASHBURN
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.
MD 0487 CONCERNING TORNADO WATCH 131... FOR CENTRAL TO EAST-CENTRAL ILLINOIS
Mesoscale Discussion 0487
NWS Storm Prediction Center Norman OK
0852 PM CDT Fri Apr 17 2026
Areas affected...Central to east-central Illinois
Concerning...Tornado Watch 131...
Valid 180152Z - 180315Z
The severe weather threat for Tornado Watch 131 continues.
SUMMARY...A corridor of higher severe wind and QLCS tornado
potential is evident across central and east-central Illinois and
will likely persist for the next hour or two.
DISCUSSION...Radar imagery from KILX has recently been sampling
45-55 knot winds between 500-1000 ft ARL with the approach of a
bowing segment of a convective line. Additionally, several embedded
circulations have been noted on the leading edge of the bow. Per
recent mesoanalysis, the regional convective environment appears
most favorable immediately downstream of the bow, and the KILX VWP
continues to show strengthening low-level winds with 0-1 km SRH
recently increasing to over 400 m2/s2 immediately ahead of the line.
Consequently, confidence is high that the severe wind/QLCS tornado
threat will likely be maximized downstream into east-central IL over
the next 1-2 hours.
..Moore.. 04/18/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...LOT...ILX...
LAT...LON 39858950 39978965 40178952 40348932 40478925 40668919
40888780 40748758 40478758 40208761 39988772 39838798
39858950
MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
MD 0486 CONCERNING TORNADO WATCH 131... FOR PARTS OF EAST CENTRAL MISSOURI INTO ADJACENT PORTIONS OF ILLINOIS
Mesoscale Discussion 0486
NWS Storm Prediction Center Norman OK
0839 PM CDT Fri Apr 17 2026
Areas affected...parts of east central Missouri into adjacent
portions of Illinois
Concerning...Tornado Watch 131...
Valid 180139Z - 180345Z
The severe weather threat for Tornado Watch 131 continues.
SUMMARY...An organized cluster of storms may be maintained across
northwestern portions of Greater St. Louis through 9-11 PM CDT, with
a continuing risk for damaging wind gusts and potential for a brief
tornado or two.
DISCUSSION...A sustained cluster of thunderstorms has become
increasingly organized across and east of the Missouri Ozarks during
the past few hours, with a well-defined lower/mid-tropospheric
cyclonic circulation and associated evolving bow echo structure in
radar reflectivities. It appears that the apex of the bow structure
has accelerated east-northeastward in excess of 50 kt. If this
motion is maintained, it is on track to surge across northwestern
portions of Greater St. Louis through 02-03Z.
This still appears to be perhaps just ahead of the leading edge of
the surface cold front, as delineated by 2-4 mb 2-hourly surface
pressures rises now east of Quincy IL south/southwestward through
the Columbia and Sedalia vicinities. The boundary-layer has
undergone warming and drying across the St. Louis area, where the
temperature/dew point at Lambert is 81/57 F. However, thermodynamic
profiles still appear sufficiently unstable to maintain convection
with potential to produce damaging wind gusts. The risk for
tornadoes is more unclear, but the environment might still be
conducive immediately to the north of the front.
..Kerr.. 04/18/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ILX...LSX...SGF...
LAT...LON 38949180 39509044 39838933 39098870 38458965 38069075
38029216 38409185 38949180
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN
MD 0485 CONCERNING TORNADO WATCH 131... FOR CENTRAL ILLINOIS INTO NORTHWEST INDIANA
Mesoscale Discussion 0485
NWS Storm Prediction Center Norman OK
0809 PM CDT Fri Apr 17 2026
Areas affected...Central Illinois into northwest Indiana
Concerning...Tornado Watch 131...
Valid 180109Z - 180315Z
The severe weather threat for Tornado Watch 131 continues.
SUMMARY...A line of severe thunderstorms will continue to push
east/southeast over the next few hours and will continue to pose a
risk of severe wind and embedded circulations.
DISCUSSION...A consolidated line of severe thunderstorms is now
evident in MRMS imagery with several embedded surges noted across
western and northwest IL. KILX radar velocity data shows swaths of
higher winds within the surging segments with several gusts between
45-65 mph noted over the past 30 minutes along the line. Downstream,
low-level winds continue to strengthen across central IL. The KILX
VWP sampling winds between 50-55 knots below 1 km, and a recent 00z
ILX RAOB sampled MLCAPE upwards of 1600 J/kg with 50 knots of
effective bulk shear and around 200 m2/s2 effective SRH.
Consequently, the downstream environment remains favorable for
maintenance of the severe line as it continues east/southeast over
the next few hours across IL. While the primary threat will remain
swaths of severe winds (most likely between 60-70 mph, but possibly
as high as 75 mph), favorable bulk shear values from the surface
through 3 km will continue to favor the development of embedded
circulations within the line.
Eastward expansion of WW 131 will likely be needed in the coming
hours across portions of eastern IL. Drier low-level conditions
downstream across IN casts some uncertainty on how intense the line
will be beyond roughly the 05-06 UTC time frame into IN, but
convective trends will be monitored for the need for downstream
watch issuance.
..Moore.. 04/18/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...IWX...IND...LOT...ILX...MKX...LSX...DVN...
LAT...LON 39188775 39108832 39138888 39369064 39459087 39589096
39739100 39859069 40039036 40448997 41038952 41568919
42008896 42328872 42488847 42608799 42498768 41928747
41798734 41788704 41888679 41748656 41278645 40788660
39778708 39418753 39188775
MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0759 PM CDT Fri Apr 17 2026
Valid 180100Z - 181200Z
...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS OVER MUCH OF
ILLINOIS INTO NORTHEAST MISSOURI...AND OVER NORTHERN OKLAHOMA...
...SUMMARY...
Damaging storms producing wind, hail and isolated tornadoes remain
possible this evening from Illinois into Oklahoma.
...WI/MI into IL and MO...
Supercells have largely merged into a broken line of assorted bows
from far southeast WI across much of northern into western IL and
trailing into northeast MO. The 00Z ILX sounding shows steep lapse
rates aloft and large deep-layer shear, as well as veering winds
with height. Low-level SRH will remain favorable for rotation to
develop at least briefly anywhere within the line, with damaging
winds the most likely threat. Storms have recently become better
organized over central MO, and this activity may affect the St.
Louis area later tonight. For lower MI into northern IN, the
organized line of storms to the west along with a 60 kt low-level
jet suggest at least isolated severe gusts may occur overnight
despite lesser instability.
For more information about Illinois, see mesoscale discussion 484.
...OK...Southeast KS...southwest MO...northwest AR...
Scattered severe cells persist near and north of the cold front
across much of northern OK and extending into southeast KS. Although
the undercutting cold air will likely mitigate wind potential, steep
lapse rates aloft along with ample deep-layer shear will continue to
favor hail. Storm coverage may be more isolated into southwest OK
later tonight, but the environment remains quite favorable for large
hail.
One corridor for possible damaging wind or even a tornado is over
northeast OK into southwest MO. Here, the front is not surging as
fast, and storms over Osage county are already oriented more
favorably N-S relative to the deep-layer shear. A southwest
low-level jet near 50 kt will further support low-level rotation.
..Jewell.. 04/18/2026
SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0446 PM CDT Fri Apr 17 2026
Valid 191200Z - 251200Z
A large, deep upper level trough will move over the Great Lakes and
the eastern US Day 3/Sunday - Day 4/Monday, with another surface
cold front pushing through the eastern US. An upper-level trough
will move into the West early to mid-next week, with upper-level
troughing likely lingering over the West through next week. Much of
the southern half of the West, southern/central High Plains, and the
Southeast will remain dry for the outlook period.
...Plains and Southwest...
Lee troughing on the southern/central High Plains amid dry return
flow will result in another round of elevated to critical fire
weather conditions on Day 3/Sunday. South-southwest sustained winds
of 15-25 mph amid minimum RH of 8-20% is expected with the highest
probabilities of critical conditions in the Oklahoma/Texas
Panhandles, southwest Kansas, into far southeast Colorado and
northeast New Mexico.
Dry/breezy conditions will likely develop again on Day 4/Monday in
the vicinity of the Oklahoma Panhandle and southwest Kansas amid
continued surface troughing and dry return flow. Another area of
concern will be in eastern Wyoming into western Nebraska and South
Dakota near surface troughing and a cold front. West-northwest winds
of 15-20 mph amid minimum RH of 10-25% is forecast across this area,
with most of the concern ahead of the cold front.
As the upper-level trough moves into and across the Intermountain
West, increasing flow aloft and lee troughing on the High Plains
will lead to elevated/critical fire weather conditions. A broad 40%
area was introduced on Day 6/Wednesday across portions of the
Southwest and much of the southern/central High Plains based on
current ensemble forecast guidance. Depending on the timing of the
upper-level troughing, probabilities may be necessary on Day
5/Tuesday if the upper-level trough trends quicker, or probabilities
may be shifted/increased onto Day 7/Thursday if trends with trough
are slower. Regardless, critical fire weather conditions are likely
to return to portions of the Southwest and much of the
southern/central High Plains mid-next week.
...Southeast and Mid-Atlantic...
Dry and breezy post-frontal conditions will develop east of the
Appalachians on the Piedmont Plateau extending southwest into the
Florida Panhandle on Day 3/Sunday. The 40% area was expanded, but
farther expansion may be necessary depending on the anticipated
rainfall on Day 2/Saturday into Day 3/Sunday. North-northwest
sustained winds of 10-15 mph and minimum RH of 10-30% is forecast
within and near the 40% area amid a fuelscape characterized by ERCs
mostly in the 90-99th percentiles.
Dry and breezy post-frontal conditions will likely persist across
portions of the Piedmont and Deep South on Day 4/Monday. By Day
5/Tuesday, western portions of the Florida Peninsula and north
Florida have the best chances elevated to locally critical
conditions as 10-20 mph easterly winds overlap RH of 25-40%. Minimum
RH of 20-35% will continue across portions of the Southeast further
exacerbating already dry, receptive fuels for which a Fuels and Fire
Behavior Advisory has been issued.
..Nauslar.. 04/17/2026
...Please see www.spc.noaa.gov/fire for graphic product...
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