Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL4
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 664
NWS Storm Prediction Center Norman OK
750 PM CDT Thu Aug 29 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Extreme northeast Iowa
Extreme southeast Minnesota
Southwest and west central Wisconsin
* Effective this Thursday evening from 750 PM until 1100 PM CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1 inch in diameter possible
A tornado or two possible
SUMMARY...A line of storms with a history of wind damage will
continue eastward for the next few hours before weakening. An
isolated tornado or two, as well as marginally severe hail, will
also be possible with the more intense/embedded segments.
The severe thunderstorm watch area is approximately along and 25
statute miles east and west of a line from 105 miles north northeast
of La Crosse WI to 55 miles south of La Crosse WI. 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 662...WW 663...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 500. Mean storm motion vector
26030.
...Thompson
SEL4
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 664
NWS Storm Prediction Center Norman OK
750 PM CDT Thu Aug 29 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Extreme northeast Iowa
Extreme southeast Minnesota
Southwest and west central Wisconsin
* Effective this Thursday evening from 750 PM until 1100 PM CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1 inch in diameter possible
A tornado or two possible
SUMMARY...A line of storms with a history of wind damage will
continue eastward for the next few hours before weakening. An
isolated tornado or two, as well as marginally severe hail, will
also be possible with the more intense/embedded segments.
The severe thunderstorm watch area is approximately along and 25
statute miles east and west of a line from 105 miles north northeast
of La Crosse WI to 55 miles south of La Crosse WI. 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 662...WW 663...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 500. Mean storm motion vector
26030.
...Thompson
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW4
WW 664 SEVERE TSTM IA MN WI 300050Z - 300400Z
AXIS..25 STATUTE MILES EAST AND WEST OF LINE..
105NNE LSE/LA CROSSE WI/ - 55S LSE/LA CROSSE WI/
..AVIATION COORDS.. 20NM E/W /46WSW RHI - 47NNW DBQ/
HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 26030.
LAT...LON 45288991 43089075 43089175 45289094
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU4.
Watch 664 Status Report Messages:
STATUS REPORT #2 ON WW 664
VALID 300325Z - 300400Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 S LSE TO
20 N VOK.
REMAINING VALID PORTION OF WW 664 MAY BE ALLOWED TO EXPIRE AT
30/04Z.
..KERR..08/30/24
ATTN...WFO...ARX...
&&
STATUS REPORT FOR WS 664
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
WIC023-057-081-103-123-300400-
WI
. WISCONSIN COUNTIES INCLUDED ARE
CRAWFORD JUNEAU MONROE
RICHLAND VERNON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 664
VALID 300230Z - 300340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 WSW LSE
TO 30 NNW AUW.
..KERR..08/30/24
ATTN...WFO...ARX...
&&
STATUS REPORT FOR WS 664
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC005-191-300340-
IA
. IOWA COUNTIES INCLUDED ARE
ALLAMAKEE WINNESHIEK
$$
MNC055-300340-
MN
. MINNESOTA COUNTIES INCLUDED ARE
HOUSTON
$$
WIC019-023-053-057-063-081-103-123-300340-
WI
. WISCONSIN COUNTIES INCLUDED ARE
CLARK CRAWFORD JACKSON
JUNEAU LA CROSSE MONROE
RICHLAND VERNON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (5%)
|
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
|
Low (20%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (20%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
Mod (60%)
|
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.
weather.gov 
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