Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 151
NWS Storm Prediction Center Norman OK
645 PM CDT Sat Apr 27 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
South-central and Southeast Wisconsin
Lake Michigan
* Effective this Saturday night from 645 PM until Midnight 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...Scattered severe thunderstorms will continue to develop
through the evening across south-central into southeast Wisconsin.
Organized storms, including a few supercells, will pose a risk for
mainly large hail and damaging gusts, but a brief tornado cannot be
ruled out.
The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 15 miles southwest of
Madison WI to 50 miles northeast of Milwaukee WI. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
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 145...WW 146...WW
147...WW 148...WW 149...WW 150...
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
24035.
...Smith
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 151
NWS Storm Prediction Center Norman OK
645 PM CDT Sat Apr 27 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
South-central and Southeast Wisconsin
Lake Michigan
* Effective this Saturday night from 645 PM until Midnight 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...Scattered severe thunderstorms will continue to develop
through the evening across south-central into southeast Wisconsin.
Organized storms, including a few supercells, will pose a risk for
mainly large hail and damaging gusts, but a brief tornado cannot be
ruled out.
The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 15 miles southwest of
Madison WI to 50 miles northeast of Milwaukee WI. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
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 145...WW 146...WW
147...WW 148...WW 149...WW 150...
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
24035.
...Smith
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 151 SEVERE TSTM WI LM 272345Z - 280500Z
AXIS..45 STATUTE MILES NORTH AND SOUTH OF LINE..
15SW MSN/MADISON WI/ - 50NE MKE/MILWAUKEE WI/
..AVIATION COORDS.. 40NM N/S /36SSE DLL - 52ENE BAE/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24035.
LAT...LON 43638954 44118720 42818720 42338954
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 151 Status Report Messages:
STATUS REPORT #3 ON WW 151
VALID 280245Z - 280340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 WSW MSN
TO 25 E MSN TO 45 WNW MKG.
..THORNTON..04/28/24
ATTN...WFO...MKX...
&&
STATUS REPORT FOR WS 151
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
WIC055-059-079-101-105-127-133-280340-
WI
. WISCONSIN COUNTIES INCLUDED ARE
JEFFERSON KENOSHA MILWAUKEE
RACINE ROCK WALWORTH
WAUKESHA
$$
LMZ644-645-646-671-673-675-280340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
PORT WASHINGTON TO NORTH POINT LIGHT WI
NORTH POINT LIGHT TO WIND POINT WI
WIND POINT WI TO WINTHROP HARBOR IL
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5NM
OFFSHORE TO MID LAKE
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5NM
OFFSHORE TO MID LAKE
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5NM
OFFSHORE TO MID LAKE
$$
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.
$$
STATUS REPORT #2 ON WW 151
VALID 280150Z - 280240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..THORNTON..04/28/24
ATTN...WFO...MKX...
&&
STATUS REPORT FOR WS 151
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
WIC021-025-027-039-055-059-079-089-101-105-117-127-131-133-
280240-
WI
. WISCONSIN COUNTIES INCLUDED ARE
COLUMBIA DANE DODGE
FOND DU LAC JEFFERSON KENOSHA
MILWAUKEE OZAUKEE RACINE
ROCK SHEBOYGAN WALWORTH
WASHINGTON WAUKESHA
$$
LMZ643-644-645-646-669-671-673-675-280240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
SHEBOYGAN TO PORT WASHINGTON WI
PORT WASHINGTON TO NORTH POINT LIGHT WI
NORTH POINT LIGHT TO WIND POINT WI
WIND POINT WI TO WINTHROP HARBOR IL
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5NM OFFSHORE
TO MID LAKE
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5NM
OFFSHORE TO MID LAKE
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5NM
OFFSHORE TO MID LAKE
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5NM
OFFSHORE TO MID LAKE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 151
VALID 280030Z - 280140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..WENDT..04/28/24
ATTN...WFO...MKX...
&&
STATUS REPORT FOR WS 151
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
WIC021-025-027-039-055-059-079-089-101-105-117-127-131-133-
280140-
WI
. WISCONSIN COUNTIES INCLUDED ARE
COLUMBIA DANE DODGE
FOND DU LAC JEFFERSON KENOSHA
MILWAUKEE OZAUKEE RACINE
ROCK SHEBOYGAN WALWORTH
WASHINGTON WAUKESHA
$$
LMZ643-644-645-646-669-671-673-675-280140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
SHEBOYGAN TO PORT WASHINGTON WI
PORT WASHINGTON TO NORTH POINT LIGHT WI
NORTH POINT LIGHT TO WIND POINT WI
WIND POINT WI TO WINTHROP HARBOR IL
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5NM OFFSHORE
TO MID LAKE
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5NM
OFFSHORE TO MID LAKE
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5NM
OFFSHORE TO MID LAKE
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5NM
OFFSHORE TO MID LAKE
$$
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.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (EF2-EF5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.