Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 400
NWS Storm Prediction Center Norman OK
520 PM CDT Fri Jul 24 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central and eastern North Dakota
* Effective this Friday afternoon and evening from 520 PM until
1100 PM CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY...Multiple clusters should develop northeast from
north-central South Dakota across parts of south-central into
eastern North Dakota through this evening. Scattered severe hail and
wind will be possible.
The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 65 miles southeast of
Bismarck ND to 30 miles east northeast of Devils Lake ND. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU0).
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 399...
AVIATION...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 550. Mean storm motion vector
23025.
...Grams
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW0
WW 400 SEVERE TSTM ND 242220Z - 250400Z
AXIS..70 STATUTE MILES EAST AND WEST OF LINE..
65SE BIS/BISMARCK ND/ - 30ENE DVL/DEVILS LAKE ND/
..AVIATION COORDS.. 60NM E/W /54SE BIS - 49WNW GFK/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 23025.
LAT...LON 46100125 48279984 48279679 46109833
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 400 Status Report Messages:
STATUS REPORT #4 ON WW 400
VALID 250235Z - 250340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 ENE MBG
TO 25 NNW JMS TO 50 WSW HCO.
..BROYLES..07/25/20
ATTN...WFO...FGF...BIS...
&&
STATUS REPORT FOR WS 400
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC003-021-035-039-045-063-091-093-099-250340-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BARNES DICKEY GRAND FORKS
GRIGGS LAMOURE NELSON
STEELE STUTSMAN WALSH
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 400
VALID 250130Z - 250240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNE MBG
TO 35 ENE BIS TO 35 NE DVL.
..BROYLES..07/25/20
ATTN...WFO...FGF...BIS...
&&
STATUS REPORT FOR WS 400
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC003-021-027-031-035-039-043-045-047-051-063-091-093-099-
250240-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BARNES DICKEY EDDY
FOSTER GRAND FORKS GRIGGS
KIDDER LAMOURE LOGAN
MCINTOSH NELSON STEELE
STUTSMAN WALSH
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 400
VALID 250040Z - 250140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNW MBG
TO 30 SSE BIS TO 15 NW BIS.
..BROYLES..07/25/20
ATTN...WFO...FGF...BIS...
&&
STATUS REPORT FOR WS 400
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC003-005-015-021-027-029-031-035-039-043-045-047-051-063-071-
091-093-099-103-250140-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BARNES BENSON BURLEIGH
DICKEY EDDY EMMONS
FOSTER GRAND FORKS GRIGGS
KIDDER LAMOURE LOGAN
MCINTOSH NELSON RAMSEY
STEELE STUTSMAN WALSH
WELLS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 400
VALID 242340Z - 250040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BROYLES..07/24/20
ATTN...WFO...FGF...BIS...
&&
STATUS REPORT FOR WS 400
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC003-005-015-021-027-029-031-035-039-043-045-047-051-059-063-
071-085-091-093-099-103-250040-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BARNES BENSON BURLEIGH
DICKEY EDDY EMMONS
FOSTER GRAND FORKS GRIGGS
KIDDER LAMOURE LOGAN
MCINTOSH MORTON NELSON
RAMSEY SIOUX STEELE
STUTSMAN WALSH WELLS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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
|
Low (20%)
|
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.
weather.gov 
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