Severe Thunderstorm Watch 254

Issued

Jun 10, 2021, 8:54 PM MDT (02:54 UTC)

Expired

Jun 11, 2021, 2:00 AM MDT

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

70 kt

The Minot AFB radar (KMBX), 90 km from the middle of the area, began a volume at 02:57 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Two or more tornadoes

20%

One or more EF2 to EF5 tornadoes

10%

Ten or more severe wind reports

80%

One or more gusts of 65 knots or more

70%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

60%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 914 Tornado watch 251Jun 10, 7:30 PM MDT
• Mesoscale Discussion 915 Severe thunderstorm watch 253...254Jun 10, 10:07 PM MDT
• Mesoscale Discussion 916 Severe thunderstorm watch 254Jun 10, 10:21 PM MDT
• Mesoscale Discussion 918 Severe potential...severe thunderstorm watch likelyJun 10, 11:52 PM MDT

701 
WWUS20 KWNS 110251
SEL4  
SPC WW 110251
MTZ000-NDZ000-110800-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 254
NWS Storm Prediction Center Norman OK
950 PM CDT Thu Jun 10 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  northeast Montana
  western and central North Dakota

* Effective this Thursday night and Friday morning from 950 PM
  until 300 AM CDT.

* Primary threats include...
  Widespread damaging winds and isolated significant gusts to 80
    mph likely
  Scattered large hail and isolated very large hail events to 3
    inches in diameter likely
  A tornado or two possible

SUMMARY...Severe storms are expected to continue into the early
morning hours with some supercells possible, but with primary storm
mode transitioning to a squall line. Damaging wind and large hail
are the primary threats, but a couple of tornadoes are also
possible.

The severe thunderstorm watch area is approximately along and 125
statute miles east and west of a line from 70 miles northwest of
Minot ND to 75 miles southwest of Bismarck ND. 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...This severe thunderstorm watch replaces
tornado watch number 251...severe thunderstorm watch number 252.
Watch number 251 252 will not be in effect after 950 PM CDT.
CONTINUE...WW 253...

AVIATION...A few severe thunderstorms with hail surface and aloft to
3 inches. Extreme turbulence and surface wind gusts to 70 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
26035.

...Dial

Severe Thunderstorm Watches in North Dakota, 2021Severe Thunderstorm Watches in Montana, 2021Every severe thunderstorm watch in 2021

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.