RSS Mesoscale Discussions from Storm Prediction Center
WW 117 SEVERE TSTM IA IL 150440Z - 150900Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 117
NWS Storm Prediction Center Norman OK
1140 PM CDT Tue Apr 14 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern Iowa
Northwest Illinois
* Effective this Tuesday night and Wednesday morning from 1140 PM
until 400 AM 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...Thunderstorms will continue to develop along a cold front
and move across the watch area. A few storms will pose a risk of
hail and locally damaging wind gusts.
The severe thunderstorm watch area is approximately along and 35
statute miles north and south of a line from 20 miles north
northwest of Ottumwa IA to 20 miles northeast 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 113...WW 114...WW
115...WW 116...
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 116 SEVERE TSTM AR MO 150420Z - 150900Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 116
NWS Storm Prediction Center Norman OK
1120 PM CDT Tue Apr 14 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest Arkansas
Southwest Missouri
* Effective this Tuesday night and Wednesday morning from 1120 PM
until 400 AM 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 bowing line of thunderstorms over northeast Oklahoma
will track eastward into the watch area overnight. Locally damaging
wind gusts and perhaps a tornado are possible along the leading edge
of the storms.
The severe thunderstorm watch area is approximately along and 40
statute miles east and west of a line from 15 miles north northwest
of Monett MO to 30 miles south southwest of Fayetteville AR. 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 113...WW 114...WW 115...
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
26030.
...Hart
Read more
WW 115 SEVERE TSTM IA KS MO NE 150255Z - 150700Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 115
NWS Storm Prediction Center Norman OK
955 PM CDT Tue Apr 14 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southern Iowa
Northeast Kansas
Northern Missouri
Southeast Nebraska
* Effective this Tuesday night and Wednesday morning from 955 PM
until 200 AM 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
A tornado or two possible
SUMMARY...Thunderstorms are rapidly developing along a cold front
from northeast Kansas into southern Iowa. The strongest of these
cells will pose a threat of large hail and damaging winds through
the late evening.
The severe thunderstorm watch area is approximately along and 40
statute miles north and south of a line from 15 miles west southwest
of Concordia KS to 20 miles north northeast of Ottumwa IA. 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 109...WW 110...WW
111...WW 113...WW 114...
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 114 SEVERE TSTM OK 150220Z - 150900Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 114
NWS Storm Prediction Center Norman OK
920 PM CDT Tue Apr 14 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern Oklahoma
* Effective this Tuesday night and Wednesday morning from 920 PM
until 400 AM CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Scattered large hail events to 1.5 inches in diameter likely
A tornado or two possible
SUMMARY...clusters of thunderstorms over central Oklahoma will
continue to track northeastward overnight, with the risk of damaging
winds and hail. A tornado or two cannot be ruled out.
The severe thunderstorm watch area is approximately along and 40
statute miles east and west of a line from 130 miles south southwest
of Tulsa OK to 30 miles north northwest of Grove OK. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU4).
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 109...WW 110...WW
111...WW 113...
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
24030.
...Hart
Read more
WW 113 TORNADO IN MI LE LH LM 150055Z - 150800Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 113
NWS Storm Prediction Center Norman OK
855 PM EDT Tue Apr 14 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Northern Indiana
Central and Southern Lower Michigan
Lake Erie
Lake Huron
Lake Michigan
* Effective this Tuesday night and Wednesday morning from 855 PM
until 400 AM EDT.
* Primary threats include...
A couple tornadoes possible
Scattered damaging wind gusts to 70 mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
SUMMARY...Lines and clusters of intense thunderstorms over Wisconsin
and Lake Michigan will track eastward across the watch area through
evening and overnight, posing risks of large hail, damaging winds,
and a few tornadoes.
The tornado watch area is approximately along and 75 statute miles
north and south of a line from 35 miles west of Muskegon MI to 20
miles east of Mount Clemens MI. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU3).
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 108...WW 109...WW
110...WW 111...WW 112...
AVIATION...Tornadoes and 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 27030.
...Hart
Read more
WW 0117 Status Updates
STATUS FOR WATCH 0117 HAS NOT BEEN ISSUED YET
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WW 0116 Status Updates
STATUS FOR WATCH 0116 HAS NOT BEEN ISSUED YET
Read more
WW 0115 Status Updates
STATUS FOR WATCH 0115 HAS NOT BEEN ISSUED YET
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WW 0114 Status Updates
STATUS REPORT ON WW 114
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 S MKO TO
30 NE MKO TO 30 WSW JLN.
..THOMPSON..04/15/26
ATTN...WFO...TSA...OUN...
STATUS REPORT FOR WS 114
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC001-021-041-115-135-150540-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ADAIR CHEROKEE DELAWARE
OTTAWA SEQUOYAH
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 0113 Status Updates
STATUS REPORT ON WW 113
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NW BEH TO
20 SE AZO TO 20 WSW JXN TO 15 SE LAN TO 30 NW MTC TO 35 S BAX TO
15 ENE BAX.
..DEAN..04/15/26
ATTN...WFO...IWX...GRR...DTX...
STATUS REPORT FOR WT 113
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC039-087-091-141-151-150640-
IN
. INDIANA COUNTIES INCLUDED ARE
ELKHART LAGRANGE LA PORTE
ST. JOSEPH STEUBEN
MIC021-023-027-059-063-065-075-091-093-099-115-125-147-149-151-
161-163-150640-
MI
. MICHIGAN COUNTIES INCLUDED ARE
BERRIEN BRANCH CASS
HILLSDALE HURON INGHAM
JACKSON LENAWEE LIVINGSTON
MACOMB MONROE OAKLAND
ST. CLAIR ST. JOSEPH SANILAC
WASHTENAW WAYNE
LCZ422-423-460-LEZ444-LHZ441-442-443-LMZ043-046-080-849-
Read more
WW 0111 Status Updates
STATUS REPORT ON WW 111
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 NW DRT TO
20 ENE JCT.
..THOMPSON..04/15/26
ATTN...WFO...MAF...SJT...LUB...EWX...
STATUS REPORT FOR WS 111
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC137-267-271-465-150240-
TX
. TEXAS COUNTIES INCLUDED ARE
EDWARDS KIMBLE KINNEY
VAL VERDE
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 0110 Status Updates
STATUS REPORT ON WW 110
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 SSE EMP
TO 45 NNE PNC TO 30 S ICT TO 35 WSW ICT.
..THOMPSON..04/15/26
ATTN...WFO...ICT...OUN...TSA...
STATUS REPORT FOR WT 110
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KSC015-017-035-077-079-115-173-191-150340-
KS
. KANSAS COUNTIES INCLUDED ARE
BUTLER CHASE COWLEY
HARPER HARVEY MARION
SEDGWICK SUMNER
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 0109 Status Updates
STATUS REPORT ON WW 109
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NE BRL TO
30 SSW DBQ TO 30 NW DBQ TO 25 SE LNR TO 25 NNE MSN TO 10 SW GRB.
..WENDT..04/15/26
ATTN...WFO...ARX...DVN...DMX...LOT...GRB...MKX...
STATUS REPORT FOR WT 109
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC007-015-037-073-085-089-097-103-111-141-161-177-195-201-
150140-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BOONE CARROLL DE KALB
HENRY JO DAVIESS KANE
LAKE LEE MCHENRY
OGLE ROCK ISLAND STEPHENSON
WHITESIDE WINNEBAGO
IAC045-061-097-163-150140-
IA
. IOWA COUNTIES INCLUDED ARE
CLINTON DUBUQUE JACKSON
SCOTT
WIC015-025-027-039-045-055-059-065-071-079-089-101-105-117-127-
131-133-150140-
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MD 0442 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR NORTHWEST OHIO
Mesoscale Discussion 0442
NWS Storm Prediction Center Norman OK
1155 PM CDT Tue Apr 14 2026
Areas affected...Northwest Ohio
Concerning...Severe potential...Watch possible
Valid 150455Z - 150600Z
Probability of Watch Issuance...40 percent
SUMMARY...The threat for isolated wind damage may spread into
northwest OH, just southeast of WW #113. However, the need for a
new watch into OH is uncertain.
DISCUSSION...A well-developed MCS with bowing segments and a comma
head/MCV structure continues across southeast Lower MI. The storms
are moving southeastward and will reach the edge of WW #113 near and
after 06z. The downstream environment is less buoyant into OH, in
the wake of earlier convection, but there is also strong southwest
flow just off the surface to advect moisture northeastward. It is
not clear if the storms will maintain severity into northwest OH,
but this area will be monitored for a small watch after 06z.
..Thompson/Hart.. 04/15/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...CLE...DTX...IWX...
LAT...LON 41278202 41148239 41118309 41258424 41418478 41638471
41788379 41938269 41828218 41528180 41278202
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
Read more
MD 0441 CONCERNING SEVERE THUNDERSTORM WATCH 115... FOR SOUTHEAST NEBRASKA/NORTHEAST KANSAS ACROSS SOUTHERN IOWA
Mesoscale Discussion 0441
NWS Storm Prediction Center Norman OK
1136 PM CDT Tue Apr 14 2026
Areas affected...Southeast Nebraska/northeast Kansas across southern
Iowa
Concerning...Severe Thunderstorm Watch 115...
Valid 150436Z - 150600Z
The severe weather threat for Severe Thunderstorm Watch 115
continues.
SUMMARY...Threat for occasional large hail and isolated wind damage
will continue along a stalled front for the next couple of hours,
with additional storm development expected into eastern Iowa.
DISCUSSION...Thunderstorms developed rapidly along a stalled front
in the past hour, aided by low-level warm advection. The front is
expected to move little the next few hours and will provide a focus
for additional storm development into eastern IA (where a new severe
thunderstorm watch has just been issued). Storms will likely remain
confined to the front and will pose a threat for large hail with the
initial updrafts, and isolated wind damage as storm coverage
increases and small bowing segments become possible along the
boundary. A brief tornado may also occur with bowing segments
interacting with the front. Once storms become widespread, storm
intensity will decrease gradually and the severe threat will begin
to wane close to watch expiration time at 07z.
..Thompson.. 04/15/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...DVN...DMX...EAX...OAX...TOP...GID...
LAT...LON 40499459 40009585 39719713 39749753 40259727 40889540
41509379 41949202 42149067 42069010 41798988 41519005
41329189 41009326 40499459
MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN
Read more
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0754 PM CDT Tue Apr 14 2026
Valid 150100Z - 151200Z
...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROS PORTIONS
OF THE GREAT LAKES REGION...
...SUMMARY...
Severe thunderstorms are expected through tonight from the southern
Plains into the Midwest. Large hail, several tornadoes (some
strong), and swaths of severe/damaging gusts are all likely,
particularly from eastern Iowa into the southern Great Lakes.
...Synopsis...
Scattered discrete/semi-discrete supercells are ongoing across
eastern Iowa, far northern Illinois, and southern Wisconsin along a
diffuse warm frontal zone stretching eastward from weak surface low
analyzed over eastern NE/western IA. The primary severe risk through
the overnight hours will be associated with this activity as it
spreads southeast through early morning. Further south across the
central/southern Plains, poorly organized convection casts
uncertainty in the nocturnal severe threat; however, a favorable
environment will remain in place through Wednesday morning and could
support severe convection.
...Midwest/Great Lakes...
01 UTC regional radar mosaics show semi-discrete supercells ongoing
across far eastern IA, northern IL, and southern WI with the early
stages of upscale growth evident as storms interactions increase.
This trend will continue through the overnight hours as this
activity propagates east/southeast into lower MI and northern IN.
The recent 00z DVN RAOB sampled a convective environment highly
favorable for organized convection, which will maintain the
potential for significant hail and tornadoes in the near term (most
likely through 03 UTC) before a full transition to a linear mode
takes place. Once this transition occurs, severe winds (including
the potential for significant gusts in excess of 75 mph) and
embedded circulations appear probable for areas downstream.
...Southern Iowa into Kansas...
Thunderstorm development along a southward sagging cold front is
anticipated in the coming hours across northeast KS into southern
IA. Regional soundings sampled adequate buoyancy and strong
deep-layer wind shear (around 50 knots) that will likely support
organized convection along the front for a few hours. Storm motions
along the boundary may foster clustering/upscale growth, but a
severe wind, hail, and perhaps tornado threat is expected to
materialize through the night.
...Oklahoma into Texas...
Convective evolution thus far across western OK into northwest TX
has been relatively lackluster given the otherwise buoyant and
strongly sheared environment sampled by the 00z OUN sounding. This
is likely due to expansive convective outflows resulting in
undercutting and clustered storm modes as well as the presence of a
subsidence inversion (also noted in the 00z sounding). It remains
unclear whether or not this activity will be able to re-intensify
through the late evening hours given. However, strengthening flow
fields through 06 UTC may support some degree of improved
organization and a more robust severe threat. This potential is
hinted by recent HRRR solutions, but overall confidence is limited.
Based on these trends, opted to remove the 30% hail/wind
probabilities given low confidence in severe coverage. Further south
into western TX, attempts at sustained convection have been noted
over the past hour along the dryline, but downstream inhibition may
limit overall storm coverage.
..Moore.. 04/15/2026
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