WW 679 SEVERE TSTM KS MO OK 192230Z - 200500Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 679
NWS Storm Prediction Center Norman OK
530 PM CDT Thu Sep 19 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast Kansas
Western Missouri
Northeast Oklahoma
* Effective this Thursday afternoon from 530 PM until Midnight
CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Scattered thunderstorms are expected to continue to
intensify through the evening across southeast Kansas and northern
Oklahoma, spreading into parts of western Missouri through the
evening. Damaging winds and some hail are the main concerns.
The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 30 miles south of
Bartlesville OK to 100 miles north northeast of Joplin MO. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU9).
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 677...WW 678...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
28025.
...Hart
WW 678 TORNADO MN WI LS 192205Z - 200400Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 678
NWS Storm Prediction Center Norman OK
505 PM CDT Thu Sep 19 2024
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Northeast Minnesota
Northwest Wisconsin
Lake Superior
* Effective this Thursday afternoon and evening from 505 PM until
1100 PM CDT.
* Primary threats include...
A couple tornadoes possible
Scattered damaging wind gusts to 70 mph possible
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY...Scattered thunderstorms will continue to develop across
northeastern Minnesota and track eastward across the watch area this
evening. Isolated intense/supercells are possible, capable of hail,
damaging winds, and a tornado or two.
The tornado watch area is approximately along and 50 statute miles
east and west of a line from 40 miles north northwest of Grand
Marais MN to 85 miles south of Duluth MN. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU8).
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 677...
AVIATION...Tornadoes and 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 23035.
...Hart
WW 677 SEVERE TSTM IA MN WI 191910Z - 200300Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 677
NWS Storm Prediction Center Norman OK
210 PM CDT Thu Sep 19 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northern Iowa
Southern and East-Central Minnesota
Western Wisconsin
* Effective this Thursday afternoon and evening from 210 PM until
1000 PM CDT.
* Primary threats include...
Scattered large hail likely with 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...Thunderstorms should continue to develop this afternoon
while posing a threat for large hail up to 1.5-2.5 inches in
diameter. As this activity spreads east-northeastward, damaging
winds around 60-70 mph may become more of a threat through this
evening, especially if thunderstorms can form into clusters. A
tornado or two also appears possible with any persistent,
surface-based supercell.
The severe thunderstorm watch area is approximately along and 75
statute miles east and west of a line from 45 miles north northwest
of Eau Claire WI to 15 miles southwest of Mason City IA. 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.
&&
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
24030.
...Gleason
WW 0679 Status Updates
STATUS REPORT ON WW 679
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S PNC TO
15 SW BVO TO 35 SSE CNU TO 20 ENE CNU TO 30 SSE TOP.
..THORNTON..09/20/24
ATTN...WFO...ICT...TOP...SGF...EAX...TSA...
STATUS REPORT FOR WS 679
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KSC003-011-021-037-099-107-121-200240-
KS
. KANSAS COUNTIES INCLUDED ARE
ANDERSON BOURBON CHEROKEE
CRAWFORD LABETTE LINN
MIAMI
MOC011-013-015-037-039-057-083-085-097-101-119-145-159-185-217-
200240-
MO
. MISSOURI COUNTIES INCLUDED ARE
BARTON BATES BENTON
CASS CEDAR DADE
HENRY HICKORY JASPER
JOHNSON MCDONALD NEWTON
PETTIS ST. CLAIR VERNON
OKC035-037-041-097-105-115-117-131-143-145-147-200240-
WW 0678 Status Updates
STATUS REPORT ON WW 678
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 ENE BRD
TO 40 N IWD.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2090
..THORNTON..09/20/24
ATTN...WFO...DLH...
STATUS REPORT FOR WT 678
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
WIC003-007-013-031-099-113-129-200240-
WI
. WISCONSIN COUNTIES INCLUDED ARE
ASHLAND BAYFIELD BURNETT
DOUGLAS PRICE SAWYER
WASHBURN
LSZ121-200240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI
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.
WW 0677 Status Updates
STATUS REPORT ON WW 677
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 SSE MCW
TO 20 S RST TO 15 WNW LSE TO 30 ESE MSP TO 65 NE MSP.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0289
..THORNTON..09/20/24
ATTN...WFO...DMX...ARX...MPX...
STATUS REPORT FOR WS 677
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC037-067-089-191-200240-
IA
. IOWA COUNTIES INCLUDED ARE
CHICKASAW FLOYD HOWARD
WINNESHIEK
MNC055-200240-
MN
. MINNESOTA COUNTIES INCLUDED ARE
HOUSTON
WIC005-017-019-033-035-053-063-091-093-095-107-109-119-121-
200240-
WI
. WISCONSIN COUNTIES INCLUDED ARE
MD 2090 CONCERNING TORNADO WATCH 678... FOR NORTHERN WISCONSIN
Mesoscale Discussion 2090
NWS Storm Prediction Center Norman OK
0808 PM CDT Thu Sep 19 2024
Areas affected...northern Wisconsin
Concerning...Tornado Watch 678...
Valid 200108Z - 200215Z
The severe weather threat for Tornado Watch 678 continues.
SUMMARY...Severe threat continues within WW678.
DISCUSSION...Thunderstorms continue within WW678 across northern WI.
Storm mode has largely been supercellular, with weakening observed
over the last hour. Storms are still within a region of MLCAPE
around 1000 J/kg but may be responding to loss of daytime heating
and warmer mid-levels. Shear profiles do remain favorable. The VAD
profile from DLH continues to show low-level curvature and 0-3 km
SRH around 160 m2/s2, favorable for maintaining supercells capable
of instances of large hail and perhaps a tornado. However, the
declining thermodynamic profile may not support this risk for much
longer into the evening.
..Thornton.. 09/20/2024
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...DLH...MPX...
LAT...LON 46029258 46699236 47029189 47059161 47069150 46979090
46629089 46059108 45859116 45699144 45679218 45689247
45769253 46029258
MD 2089 CONCERNING SEVERE THUNDERSTORM WATCH 677... FOR SOUTHEASTERN MINNESOTA...WESTERN WISCONSIN
Mesoscale Discussion 2089
NWS Storm Prediction Center Norman OK
0741 PM CDT Thu Sep 19 2024
Areas affected...forsoutheastern Minesotta...western Wisconsin
Concerning...Severe Thunderstorm Watch 677...
Valid 200041Z - 200245Z
The severe weather threat for Severe Thunderstorm Watch 677
continues.
SUMMARY...Severe threat continues within WW677.
DISCUSSION...Storms continue along a northward lifting warm front
and cold front moving across portions of eastern MN into western WI.
Recent storm reports from storms along the warm front have produced
instances of hail up to 1.25 in. Recent 00z RAOB from MPX shows a
warm layer aloft with MLCAPE around 1900 J/kg and deep layer shear
around 30 kts. Hodographs are primarily linear with generally
uniformly westerly winds aloft. This will continue to support mixed
mode of multi-cell clusters and occasional supercells capable of
large hail. The highest threat for large hail will remain along and
north of the warm front in the near term. Further severe development
will continue along and ahead of the cold front as well, with
potential for hail and instances of strong to severe wind.
..Thornton.. 09/20/2024
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ARX...MPX...
LAT...LON 44119332 45409268 45469098 45219069 44589080 43999153
43759191 43609313 43609316 44119332
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0745 PM CDT Thu Sep 19 2024
Valid 200100Z - 201200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF THE
UPPER MISSISSIPPI VALLEY INTO PARTS OF NORTHEAST OKLAHOMA...
...SUMMARY...
Scattered strong to severe storms remain possible through this
evening from the upper Mississippi Valley southward into northeast
Oklahoma.
A shortwave trough will shift northeastward out over the Dakotas and
MN this evening, as an upper low moves northeastward across MB.
Winds aloft will weaken over the area, though cooling aloft will
continue spreading into the upper Great Lakes.
At the surface, a weak front/wind shift extends from the main
surface low over MB southward across MN and into IA, and from
southeast KS into northwest OK.
The strongest cells currently stretch from the MN Arrowhead
southward into north central IA, with primarily discrete storm mode
along the front. Farther south, a secondary area of storms persist
over southeast KS into northeast OK.
Tornado watch #678 continues over northwest WI this evening, where
low-level shear is a bit stronger. Storms across this area may
persist for several more hours before dissipating, as temperatures
aloft are cooling.
Farther south, Severe Thunderstorm watches #677 and #679 continue
along the boundary, where storms remain within the diurnal
instability axis. Temperatures aloft are quite warm here, and storms
should dissipate sooner than points north. Until then, locally
severe gusts or hail will be possible.
For more information see mesoscale discussion #2089.
..Jewell.. 09/20/2024
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