Alert archive / North Dakota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 219, NWS Bismarck, ND

July 23, 2020Golden Valley County, Slope County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 23, 2020, 4:53 PM MDT for Golden Valley County, Slope County, North Dakota. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 23, 2020, 4:53 PM MDT (22:53 UTC)
Expired: Jul 23, 2020, 5:33 PM MDT
In force: 40 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Golden Valley County, ND, Slope County, ND

The radar

The Bismarck radar (KBIS), 221 km from the middle of the area, began a volume at 22:53 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 23, 2:27 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 2:29 PM MDT, 2 hours 24 minutes earlier.

Area forecast discussion, Jul 23, 2:29 PM MDT, 2 hours 24 minutes before

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Hazardous weather outlook, Jul 23, 3:08 PM MDT, 1 hour 45 minutes before

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In the hours before

Local storm report, Jul 23, 12:22 PM MDT, 4 hours 31 minutes before

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Local storm report, Jul 23, 12:44 PM MDT, 4 hours 9 minutes before

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Special weather statement, Jul 23, 3:26 PM MDT, 1 hour 27 minutes before

Special Weather Statement
National Weather Service Bismarck ND
326 PM MDT Thu Jul 23 2020

NDZ040-043-232215-
Slope ND-Bowman ND-
326 PM MDT Thu Jul 23 2020

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN BOWMAN AND WESTERN SLOPE
COUNTIES UNTIL 415 PM MDT...

At 326 PM MDT, a strong thunderstorm was located 8 miles southwest of
Marmarth, or 17 miles southeast of Baker, moving north at 30 mph.

Penny size hail and wind gusts to 40 mph will be possible with this
storm.

Locations impacted include...
Marmarth, Sunset Butte, Three V Crossing and Pretty Butte.

Very heavy rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
southwestern North Dakota.

LAT...LON 4651 10405 4654 10404 4654 10381 4662 10380
      4661 10371 4598 10381 4604 10405
TIME...MOT...LOC 2126Z 188DEG 28KT 4619 10403

HARGROVE

The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 23, 3:07 AM MDT	Excessive Heat Watch	BIS	Dickey, LaMoure	23 hr
Jul 23, 3:53 AM MDT	Special Weather Statement	BIS	Burke	22 min
Jul 23, 5:23 AM MDT	Special Weather Statement	BIS	Burke	37 min
Jul 23, 5:31 AM MDT	Severe Thunderstorm Warning	BIS	Burke	59 min
Jul 23, 10:27 AM MDT	Special Weather Statement	BIS	Rolette	48 min
Jul 23, 10:54 AM MDT	Severe Thunderstorm Warning	BIS	Rolette	36 min
Jul 23, 3:26 PM MDT	Special Weather Statement	BIS	Bowman	49 min
Jul 23, 4:07 PM MDT	Severe Thunderstorm Warning	BIS	Golden Valley, Slope	53 min
Jul 23, 5:17 PM MDT	Special Weather Statement	BIS	Golden Valley	43 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2020 Every severe thunderstorm warning in 2020

Sources

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