Alert archive / North Dakota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 14, NWS Bismarck, ND

June 6, 2020Grant County, Sioux County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 6, 2020, 8:35 PM MDT for Grant County, Sioux County, North Dakota. It was in force for 55 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: Jun 6, 2020, 8:35 PM MDT (02:35 UTC)
Expired: Jun 6, 2020, 9:30 PM MDT
In force: 55 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Grant County, ND, Sioux County, ND

The radar

The Bismarck radar (KBIS), 74 km from the middle of the area, began a volume at 02:37 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
Jun 6, 4:49 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.6 hours before the alert went out and 77 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1734 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 293 m²/s²
0-3 km storm-relative helicity: 582 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

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 Jun 6, 8:17 PM MDT, 18 minutes earlier.

Area forecast discussion, Jun 6, 8:17 PM MDT, 18 minutes before

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Hazardous weather outlook, Jun 6, 8:24 PM MDT, 11 minutes before

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In the hours before

Special weather statement, Jun 6, 2:52 PM MDT, 5 hours 43 minutes before

Special Weather Statement
National Weather Service Bismarck ND
352 PM CDT Sat Jun 6 2020

NDZ004-062115-
Bottineau ND-
352 PM CDT Sat Jun 6 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN BOTTINEAU COUNTY
UNTIL 415 PM CDT...

At 351 PM CDT, a strong thunderstorm was located 5 miles northeast of
Bottineau, moving northeast at 45 mph.

Nickel size hail and wind gusts to 50 mph will be possible with this
storm.

Locations impacted include...
Bottineau and Lake Metigoshe State Park.

LAT...LON 4891 10018 4874 10033 4882 10057 4900 10047
      4900 10018
TIME...MOT...LOC 2051Z 205DEG 38KT 4890 10039

MJONES

Local storm report, Jun 6, 2:58 PM MDT, 5 hours 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
358 PM CDT SAT JUN 6 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0345 PM     HAIL             2 NE BOTTINEAU          48.84N 100.42W
06/06/2020  E1.00 INCH       BOTTINEAU          ND   TRAINED SPOTTER

            VERY BRIEF PERIOD OF HAIL WITH A FEW THE
            SIZE OF QUARTERS.

&&

MJ

Local storm report, Jun 6, 3:14 PM MDT, 5 hours 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
414 PM CDT SAT JUN 6 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0351 PM     NON-TSTM WND GST 9 NW WILLISTON          48.26N 103.75W
06/06/2020  M60 MPH          WILLIAMS           ND   ASOS

            ASOS STATION KXWA WILLISTON AIRPORT.

&&

Local storm report, Jun 6, 8:21 PM MDT, 14 minutes before

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Local storm report, Jun 6, 8:28 PM MDT, 7 minutes before

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Local storm report, Jun 6, 8:31 PM MDT, 4 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 7:04 PM MDT	Wind Advisory	BIS	Burke, Divide, McKenzie, Mountrail, Renville, Williams	87 min
Jun 6, 7:40 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Hettinger, Slope	65 min
Jun 6, 8:47 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Hettinger, Slope, Stark	58 min
Jun 6, 9:24 PM MDT	Severe Thunderstorm Warning	BIS	Grant, Morton, Sioux	51 min
Jun 6, 10:09 PM MDT	Special Weather Statement	BIS	McLean, Mercer, Oliver	51 min
Jun 6, 10:10 PM MDT	Special Weather Statement	BIS	Morton	50 min
Jun 6, 10:42 PM MDT	Special Weather Statement	BIS	Ward	48 min
Jun 6, 10:59 PM MDT	Special Weather Statement	BIS	McLean, Sheridan, Wells	46 min
Jun 6, 11:11 PM MDT	Severe Thunderstorm Warning	BIS	McHenry, Ward	49 min
Jun 6, 11:39 PM MDT	Severe Thunderstorm Warning	BIS	Bottineau, McHenry, Pierce, Rolette	32 min
Jun 7, 4:23 PM MDT	Flash Flood Watch	BIS	Dickey, LaMoure, McIntosh	9 hr
Jun 7, 5:04 PM MDT	Severe Thunderstorm Warning	BIS	McIntosh	56 min
Jun 7, 5:28 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, Kidder	47 min
Jun 7, 5:44 PM MDT	Tornado Warning Tornado observed	BIS	McIntosh	31 min
Jun 7, 5:48 PM MDT	Severe Thunderstorm Warning	BIS	Emmons, Kidder, Logan	57 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.