Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL5
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 285
NWS Storm Prediction Center Norman OK
255 PM MDT Sun Jun 7 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeastern and Eastern Montana
Western and Central North Dakota
Western and Northwestern South Dakota
Northeastern Wyoming
* Effective this Sunday afternoon and evening from 255 PM until
1000 PM MDT.
...THIS IS A PARTICULARLY DANGEROUS SITUATION...
* Primary threats include...
Widespread damaging winds and scattered significant gusts to 100
mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
A tornado or two possible
SUMMARY...Severe thunderstorms are forecast to develop this
afternoon and intensify across western portions of the Watch. An
initial linear cluster of severe thunderstorms is forecast to evolve
into a bow echo as it matures and moves into the western Dakotas
this evening. A corresponding intensification of the severe-wind
threat is expected with widespread severe gusts expected and 80 to
100 mph gusts likely in localized swaths. Large to very large hail
may also occur with storms that can develop ahead of the squall
line. A tornado is possible with the squall line.
The severe thunderstorm watch area is approximately along and 125
statute miles north and south of a line from 15 miles north of
Sheridan WY to 55 miles north northeast of Bismarck ND. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU5).
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 284...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 85 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
22050.
...Smith
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW5
WW 285 SEVERE TSTM MT ND SD WY 072055Z - 080400Z
AXIS..125 STATUTE MILES NORTH AND SOUTH OF LINE..
15N SHR/SHERIDAN WY/ - 55NNE BIS/BISMARCK ND/
..AVIATION COORDS.. 110NM N/S /9NNE SHR - 47NNE BIS/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..85 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 22050.
LAT...LON 46800698 49320030 45710030 43180698
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 285 Status Report Message has not been issued yet.
Note:
Click for Complete Product Text.
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
|
High (90%)
|
Probability of 1 or more wind events > 65 knots
|
High (90%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (40%)
|
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.
weather.gov 
@NWSSPC
