Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for Watch Status Reports.
SEL3
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 663
NWS Storm Prediction Center Norman OK
540 PM CDT Mon Sep 7 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northern North Dakota
* Effective this Monday afternoon and evening from 540 PM until
1100 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
Isolated damaging wind gusts to 65 mph possible
A tornado or two possible
SUMMARY...Developing thunderstorms may strengthen into supercells
this evening while posing a threat for mainly large to very large
hail up to 1.5-2.5 inches in diameter. Isolated severe/damaging
winds and perhaps a tornado or two may also occur.
The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 65 miles west of Minot
ND to 100 miles east of Minot ND. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU3).
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 55 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
25025.
...Gleason
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW3 WW 663 SEVERE TSTM ND 072240Z - 080400Z AXIS..50 STATUTE MILES NORTH AND SOUTH OF LINE.. 65W MOT/MINOT ND/ - 100E MOT/MINOT ND/ ..AVIATION COORDS.. 45NM N/S /38E ISN - 79WNW GFK/ HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..55 KNOTS. MAX TOPS TO 500. MEAN STORM MOTION VECTOR 25025. LAT...LON 48980269 48979911 47539911 47540269 THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS FOR WOU3.
Watch 663 Status Report Messages:
STATUS REPORT #1 ON WW 663 VALID 080040Z - 080140Z SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 ESE N60 TO 15 SW MOT TO 50 N MOT. ..KERR..09/08/26 ATTN...WFO...FGF...BIS... && STATUS REPORT FOR WS 663 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NDC005-009-049-055-069-071-075-079-083-095-101-103-080140- ND . NORTH DAKOTA COUNTIES INCLUDED ARE BENSON BOTTINEAU MCHENRY MCLEAN PIERCE RAMSEY RENVILLE ROLETTE SHERIDAN TOWNER WARD 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:
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Tornadoes
| Probability of 2 or more tornadoes |
Low (20%) |
| Probability of 1 or more strong (EF2-EF5) tornadoes |
Low (10%) |
Wind
| Probability of 10 or more severe wind events |
Mod (30%) |
| Probability of 1 or more wind events > 65 knots |
Low (10%) |
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.