Severe Thunderstorm Watch 331

Issued

Jul 5, 2020, 4:41 PM CDT (21:41 UTC)

Expired

Jul 5, 2020, 11:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Aberdeen radar (KABR), 73 km from the middle of the area, began a volume at 21:45 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

10%

One or more EF2 to EF5 tornadoes

2%

Ten or more severe wind reports

40%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 1109 Severe potential...watch likelyJul 5, 3:32 PM CDT
• Mesoscale Discussion 1112 Severe thunderstorm watch 331Jul 5, 6:29 PM CDT
• Mesoscale Discussion 1113 Severe thunderstorm watch 332Jul 5, 7:24 PM CDT
• Mesoscale Discussion 1114 Severe thunderstorm watch 331Jul 5, 8:33 PM CDT

808 
WWUS20 KWNS 052139
SEL1  
SPC WW 052139
MNZ000-NDZ000-SDZ000-060400-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 331
NWS Storm Prediction Center Norman OK
440 PM CDT Sun Jul 5 2020

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Extreme west central Minnesota
  South central and southeast North Dakota
  Central and northeast South Dakota

* Effective this Sunday afternoon and evening from 440 PM until
  1100 PM CDT.

* Primary threats include...
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...Scattered areas of thunderstorm development will persist
along multiple boundaries across the watch area.  The storm
environment will favor a mix of supercells and multicell clusters
capable of producing large hail and damaging winds through this
evening.

The severe thunderstorm watch area is approximately along and 85
statute miles north and south of a line from 45 miles southwest of
Mobridge SD to 50 miles south southeast of Fargo ND. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).

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 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
28020.

...Thompson

Severe Thunderstorm Watches in North Dakota, 2020Severe Thunderstorm Watches in South Dakota, 2020Severe Thunderstorm Watches in Minnesota, 2020Every severe thunderstorm watch in 2020

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.