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
Tornado Watch Number 661
NWS Storm Prediction Center Norman OK
440 PM CDT Wed Aug 28 2024
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
South central North Dakota
North central South Dakota
* Effective this Wednesday afternoon and evening from 440 PM
until 1100 PM CDT.
* Primary threats include...
A few tornadoes possible
Scattered large hail and isolated very large hail events to 3
inches in diameter likely
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Supercell development is expected soon near the central
North Dakota/South Dakota border, with additional storm development
in the next 1-3 hours farther north and south in the watch area.
The storm environment initially favors supercells with tornadoes and
very large hail (up to 3 inches in diameter), while some clustering
of storms later this evening will lead to some increase in the
potential for damaging winds of 60-70 mph.
The tornado watch area is approximately along and 60 statute miles
east and west of a line from 40 miles east northeast of Garrison ND
to 80 miles south southeast of Mobridge SD. 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.
&&
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 3 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 600. Mean
storm motion vector 25015.
...Thompson
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 661
NWS Storm Prediction Center Norman OK
440 PM CDT Wed Aug 28 2024
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
South central North Dakota
North central South Dakota
* Effective this Wednesday afternoon and evening from 440 PM
until 1100 PM CDT.
* Primary threats include...
A few tornadoes possible
Scattered large hail and isolated very large hail events to 3
inches in diameter likely
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Supercell development is expected soon near the central
North Dakota/South Dakota border, with additional storm development
in the next 1-3 hours farther north and south in the watch area.
The storm environment initially favors supercells with tornadoes and
very large hail (up to 3 inches in diameter), while some clustering
of storms later this evening will lead to some increase in the
potential for damaging winds of 60-70 mph.
The tornado watch area is approximately along and 60 statute miles
east and west of a line from 40 miles east northeast of Garrison ND
to 80 miles south southeast of Mobridge SD. 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.
&&
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 3 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 600. Mean
storm motion vector 25015.
...Thompson
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 661 TORNADO ND SD 282140Z - 290400Z
AXIS..60 STATUTE MILES EAST AND WEST OF LINE..
40ENE N60/GARRISON ND/ - 80SSE MBG/MOBRIDGE SD/
..AVIATION COORDS.. 50NM E/W /35SE MOT - 16ENE PIR/
HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 600. MEAN STORM MOTION VECTOR 25015.
LAT...LON 47869934 44459859 44450103 47860193
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 661 Status Report Messages:
STATUS REPORT #5 ON WW 661
VALID 290330Z - 290400Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 SW ABR TO
30 SSE MBG TO 10 WSW MBG TO 10 N MBG TO 35 NE BIS TO 45 WSW DVL.
REMAINING VALID PORTION OF WW 661 MAY BE ALLOWED TO EXPIRE AT
29/04Z.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2026.
..KERR..08/29/24
ATTN...WFO...BIS...ABR...
&&
STATUS REPORT FOR WT 661
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC029-043-047-051-093-103-290400-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
EMMONS KIDDER LOGAN
MCINTOSH STUTSMAN WELLS
$$
SDC021-045-089-129-290400-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
CAMPBELL EDMUNDS MCPHERSON
WALWORTH
$$
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.
$$
STATUS REPORT #4 ON WW 661
VALID 290255Z - 290340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SW ABR TO
35 NNE PIR TO 50 SW MBG TO 10 NNW MBG TO 20 NE BIS TO 50 SE MOT.
..KERR..08/29/24
ATTN...WFO...BIS...ABR...
&&
STATUS REPORT FOR WT 661
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC029-043-047-051-093-103-290340-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
EMMONS KIDDER LOGAN
MCINTOSH STUTSMAN WELLS
$$
SDC021-031-041-045-049-089-107-129-290340-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
CAMPBELL CORSON DEWEY
EDMUNDS FAULK MCPHERSON
POTTER WALWORTH
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 661
VALID 290130Z - 290240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 NW PIR TO
10 NNW MBG TO 40 ENE N60.
..KERR..08/29/24
ATTN...WFO...BIS...ABR...
&&
STATUS REPORT FOR WT 661
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC015-029-043-047-051-083-093-103-290240-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BURLEIGH EMMONS KIDDER
LOGAN MCINTOSH SHERIDAN
STUTSMAN WELLS
$$
SDC021-031-041-045-049-059-065-069-089-107-117-119-129-290240-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
CAMPBELL CORSON DEWEY
EDMUNDS FAULK HAND
HUGHES HYDE MCPHERSON
POTTER STANLEY SULLY
WALWORTH
$$
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.
$$
STATUS REPORT #2 ON WW 661
VALID 290045Z - 290140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 NW PIR TO
10 NNW MBG TO 40 ENE N60.
..KERR..08/29/24
ATTN...WFO...BIS...ABR...
&&
STATUS REPORT FOR WT 661
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC015-029-043-047-051-059-083-103-290140-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BURLEIGH EMMONS KIDDER
LOGAN MCINTOSH MORTON
SHERIDAN WELLS
$$
SDC021-031-041-045-049-059-065-069-089-107-117-119-129-290140-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
CAMPBELL CORSON DEWEY
EDMUNDS FAULK HAND
HUGHES HYDE MCPHERSON
POTTER STANLEY SULLY
WALWORTH
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 661
VALID 282355Z - 290040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 W MBG TO
10 WSW BIS TO 25 NE N60.
..KERR..08/28/24
ATTN...WFO...BIS...ABR...
&&
STATUS REPORT FOR WT 661
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC015-029-043-047-051-055-059-083-085-103-290040-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BURLEIGH EMMONS KIDDER
LOGAN MCINTOSH MCLEAN
MORTON SHERIDAN SIOUX
WELLS
$$
SDC021-031-041-045-049-059-065-069-089-107-117-119-129-290040-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
CAMPBELL CORSON DEWEY
EDMUNDS FAULK HAND
HUGHES HYDE MCPHERSON
POTTER STANLEY SULLY
WALWORTH
$$
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
|
Mod (50%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (20%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (50%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
High (70%)
|
Probability of 1 or more hailstones > 2 inches
|
High (70%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (>95%)
|
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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