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 654
NWS Storm Prediction Center Norman OK
1055 PM CDT Mon Aug 26 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest Iowa
Southwest Minnesota
Northern Nebraska
Southeast South Dakota
* Effective this Monday night and Tuesday morning from 1055 PM
until 600 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
SUMMARY...Mainly elevated thunderstorms should pose some threat for
severe hail up to 1-2 inches in diameter as they move generally
east-northeastward through the overnight hours. If these
thunderstorms can consolidate into a cluster, then a threat for
severe/damaging winds around 60-70 mph may be realized.
The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 10 miles southwest of
Valentine NE to 25 miles north northeast of Spencer IA. 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 650...WW 651...WW 653...
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
26035.
...Gleason
SEL4
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 654
NWS Storm Prediction Center Norman OK
1055 PM CDT Mon Aug 26 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest Iowa
Southwest Minnesota
Northern Nebraska
Southeast South Dakota
* Effective this Monday night and Tuesday morning from 1055 PM
until 600 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
SUMMARY...Mainly elevated thunderstorms should pose some threat for
severe hail up to 1-2 inches in diameter as they move generally
east-northeastward through the overnight hours. If these
thunderstorms can consolidate into a cluster, then a threat for
severe/damaging winds around 60-70 mph may be realized.
The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 10 miles southwest of
Valentine NE to 25 miles north northeast of Spencer IA. 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 650...WW 651...WW 653...
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
26035.
...Gleason
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW4
WW 654 SEVERE TSTM IA MN NE SD 270355Z - 271100Z
AXIS..50 STATUTE MILES NORTH AND SOUTH OF LINE..
10SW VTN/VALENTINE NE/ - 25NNE SPW/SPENCER IA/
..AVIATION COORDS.. 45NM N/S /33WNW ANW - 58S RWF/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 26035.
LAT...LON 43470069 44239496 42789496 42020069
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU4.
Watch 654 Status Report Messages:
STATUS REPORT #4 ON WW 654
VALID 270745Z - 270840Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 N OFK TO
10 E YKN TO 25 W FSD TO 35 WSW BKX AND 10 NNE SUX TO 30 SE FSD TO
20 E BKX.
..BENTLEY..08/27/24
ATTN...WFO...FSD...LBF...OAX...
&&
STATUS REPORT FOR WS 654
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC035-041-059-119-141-143-149-167-270840-
IA
. IOWA COUNTIES INCLUDED ARE
CHEROKEE CLAY DICKINSON
LYON O'BRIEN OSCEOLA
PLYMOUTH SIOUX
$$
MNC033-063-081-083-101-105-117-133-270840-
MN
. MINNESOTA COUNTIES INCLUDED ARE
COTTONWOOD JACKSON LINCOLN
LYON MURRAY NOBLES
PIPESTONE ROCK
$$
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.
$$
STATUS REPORT #3 ON WW 654
VALID 270650Z - 270740Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 N OFK TO
10 E YKN TO 25 W FSD TO 35 WSW BKX.
..BENTLEY..08/27/24
ATTN...WFO...FSD...LBF...OAX...
&&
STATUS REPORT FOR WS 654
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC035-041-059-119-141-143-149-167-270740-
IA
. IOWA COUNTIES INCLUDED ARE
CHEROKEE CLAY DICKINSON
LYON O'BRIEN OSCEOLA
PLYMOUTH SIOUX
$$
MNC033-063-081-083-101-105-117-133-270740-
MN
. MINNESOTA COUNTIES INCLUDED ARE
COTTONWOOD JACKSON LINCOLN
LYON MURRAY NOBLES
PIPESTONE ROCK
$$
NEC027-051-270740-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CEDAR DIXON
$$
SDC011-027-079-083-087-099-101-125-127-270740-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BROOKINGS CLAY LAKE
LINCOLN MCCOOK MINNEHAHA
MOODY TURNER UNION
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 654
VALID 270525Z - 270640Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BENTLEY..08/27/24
ATTN...WFO...FSD...LBF...OAX...
&&
STATUS REPORT FOR WS 654
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC035-041-059-119-141-143-149-167-270640-
IA
. IOWA COUNTIES INCLUDED ARE
CHEROKEE CLAY DICKINSON
LYON O'BRIEN OSCEOLA
PLYMOUTH SIOUX
$$
MNC033-063-081-083-101-105-117-133-270640-
MN
. MINNESOTA COUNTIES INCLUDED ARE
COTTONWOOD JACKSON LINCOLN
LYON MURRAY NOBLES
PIPESTONE ROCK
$$
NEC015-017-027-031-051-089-103-107-149-270640-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BOYD BROWN CEDAR
CHERRY DIXON HOLT
KEYA PAHA KNOX ROCK
$$
SDC003-005-009-011-015-023-027-035-043-053-061-067-073-077-079-
083-087-097-099-101-111-125-127-135-270640-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
AURORA BEADLE BON HOMME
BROOKINGS BRULE CHARLES MIX
CLAY DAVISON DOUGLAS
GREGORY HANSON HUTCHINSON
JERAULD KINGSBURY LAKE
LINCOLN MCCOOK MINER
MINNEHAHA MOODY SANBORN
TURNER UNION YANKTON
$$
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.
$$
STATUS REPORT #1 ON WW 654
VALID 270425Z - 270540Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..DEAN..08/27/24
ATTN...WFO...FSD...LBF...OAX...
&&
STATUS REPORT FOR WS 654
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC035-041-059-119-141-143-149-167-270540-
IA
. IOWA COUNTIES INCLUDED ARE
CHEROKEE CLAY DICKINSON
LYON O'BRIEN OSCEOLA
PLYMOUTH SIOUX
$$
MNC033-063-081-083-101-105-117-133-270540-
MN
. MINNESOTA COUNTIES INCLUDED ARE
COTTONWOOD JACKSON LINCOLN
LYON MURRAY NOBLES
PIPESTONE ROCK
$$
NEC015-017-027-031-051-089-103-107-149-270540-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BOYD BROWN CEDAR
CHERRY DIXON HOLT
KEYA PAHA KNOX ROCK
$$
SDC003-005-009-011-015-023-027-035-043-053-061-067-073-077-079-
083-087-097-099-101-111-125-127-135-270540-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
AURORA BEADLE BON HOMME
BROOKINGS BRULE CHARLES MIX
CLAY DAVISON DOUGLAS
GREGORY HANSON HUTCHINSON
JERAULD KINGSBURY LAKE
LINCOLN MCCOOK MINER
MINNEHAHA MOODY SANBORN
TURNER UNION YANKTON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (10%)
|
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
|
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.
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