Hayley here - Do you want to see severe weather in your calendar?
* it's like an add-on for your digital calendar NOT a paper calendar
Ongoing line of thunderstorms over southeast MN is forecast to continue northeastward. The overall environment ahead of this line is expected to become more supportive of strong to severe storms with time. Additional thunderstorm development is anticipated as well. Large hail is the primary severe risk, although isolated strong gusts are possible as well.
SEL8
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 128
NWS Storm Prediction Center Norman OK
920 AM CDT Fri Apr 17 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
East-Central and Far Southeast Minnesota
Northwest and North-Central Wisconsin
* Effective this Friday morning and afternoon from 920 AM until
500 PM CDT.
* 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...Ongoing line of thunderstorms over southeast MN is
forecast to continue northeastward. The overall environment ahead of
this line is expected to become more supportive of strong to severe
storms with time. Additional thunderstorm development is anticipated
as well. Large hail is the primary severe risk, although isolated
strong gusts are possible as well.
The severe thunderstorm watch area is approximately along and 75
statute miles east and west of a line from 105 miles north of Eau
Claire WI to 10 miles east of La Crosse WI. 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.
&&
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
24030.
...Mosier
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.
SEL9
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
Thunderstorm development is underway along a southeastward progressing cold front that extends from northwest Missouri into northwest Oklahoma. The environment ahead of this front is very unstable and strongly sheared, and capable of supporting robust supercells. All hazards are possible with these supercells, including very large to giant hail (3 to 4" in diameter), strong wind gusts, and tornadoes. A transition from hail as the primary risk to strong gusts is anticipated as storm undergo upscale growth into a robust convective line. Gusts from 70 to 80 mph will be possible within this line, which is expected to move from south-central Kansas into central Missouri.
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 130
NWS Storm Prediction Center Norman OK
135 PM CDT Fri Apr 17 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
South-Central and Eastern Kansas
Northern and West-Central Missouri
Northern and Western Oklahoma
* Effective this Friday afternoon and evening from 135 PM until
900 PM CDT.
* Primary threats include...
A few tornadoes likely with a couple intense tornadoes possible
Widespread damaging winds and isolated significant gusts to 85
mph likely
Scattered large hail and isolated very large hail events to 4
inches in diameter likely
SUMMARY...Thunderstorm development is underway along a southeastward
progressing cold front that extends from northwest Missouri into
northwest Oklahoma. The environment ahead of this front is very
unstable and strongly sheared, and capable of supporting robust
supercells. All hazards are possible with these supercells,
including very large to giant hail (3 to 4" in diameter), strong
wind gusts, and tornadoes. A transition from hail as the primary
risk to strong gusts is anticipated as storm undergo upscale growth
into a robust convective line. Gusts from 70 to 80 mph will be
possible within this line, which is expected to move from
south-central Kansas into central Missouri.
The tornado watch area is approximately along and 80 statute miles
east and west of a line from 45 miles north northwest of Chillicothe
MO to 25 miles south of Enid OK. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU0).
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...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 4 inches. Extreme turbulence and surface wind
gusts to 75 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 27030.
...Mosier
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.
SEL1
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
Drag the marker on the map and we'll show you the severe weather potential for a given location.
Hi, I'm Hayley. Did you know that I run this site out of my own pocket? So if you'd like to help out and you're already planning on buying something off of Amazon, why not use our Amazon Severe Weather Outlook link before you buy and we'll get a tiny portion of your purchase.
SWO started as a spinoff project of wickedwx, but has since replaced the site.