Alert archive / North Dakota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 251, NWS Bismarck, ND

August 9, 2020Dickey County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 9, 2020, 3:50 PM CDT for Dickey County, North Dakota. It was in force for 20 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: Aug 9, 2020, 3:50 PM CDT (20:50 UTC)
Expired: Aug 9, 2020, 4:10 PM CDT
In force: 20 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Dickey County, ND

The radar

The Aberdeen radar (KABR), 73 km from the middle of the area, began a volume at 20:49 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
Aug 9, 12:18 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 8.8 hours before the alert went out and 135 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: 1862 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Aug 9, 3:37 PM CDT, 13 minutes earlier.

Area forecast discussion, Aug 9, 3:37 PM CDT, 13 minutes before

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Hazardous weather outlook, Aug 9, 3:02 PM CDT, 48 minutes before

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In the hours before

Local storm report, Aug 9, 10:28 AM CDT, 5 hours 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1028 AM CDT SUN AUG 9 2020

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

0556 AM     HAIL             6 SSW ORRIN             48.02N 100.24W
08/09/2020  E0.75 INCH       MCHENRY            ND   PUBLIC

&&

AE

Local storm report, Aug 9, 2:11 PM CDT, 1 hour 39 minutes before

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Local storm report, Aug 9, 2:20 PM CDT, 1 hour 30 minutes before

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Special weather statement, Aug 9, 3:23 PM CDT, 27 minutes before

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Local storm report, Aug 9, 3:47 PM CDT, 3 minutes before

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Local storm report, Aug 9, 3:48 PM CDT, 2 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
Aug 8, 8:57 PM CDT	Special Weather Statement	BIS	Bowman	48 min
Aug 8, 9:04 PM CDT	Severe Thunderstorm Warning	BIS	Bowman	41 min
Aug 8, 9:41 PM CDT	Special Weather Statement	BIS	Slope	34 min
Aug 9, 12:33 AM CDT	Special Weather Statement	BIS	McKenzie	27 min
Aug 9, 12:35 AM CDT	Special Weather Statement	BIS	McKenzie	25 min
Aug 9, 1:12 AM CDT	Special Weather Statement	BIS	McKenzie	33 min
Aug 9, 1:57 AM CDT	Special Weather Statement	BIS	Mountrail	33 min
Aug 9, 2:18 AM CDT	Special Weather Statement	BIS	Mountrail	42 min
Aug 9, 2:33 AM CDT	Severe Thunderstorm Warning	BIS	Dunn, McLean, Mountrail	34 min
Aug 9, 3:00 AM CDT	Special Weather Statement	BIS	Mountrail	30 min
Aug 9, 3:19 AM CDT	Special Weather Statement	BIS	Burke	41 min
Aug 9, 5:13 AM CDT	Special Weather Statement	BIS	McHenry, Pierce	47 min
Aug 9, 5:47 AM CDT	Severe Thunderstorm Warning	BIS	McHenry, Pierce	43 min
Aug 9, 6:18 AM CDT	Special Weather Statement	BIS	Rolette	42 min
Aug 9, 8:45 AM CDT	Special Weather Statement	BIS	Rolette	30 min
Aug 9, 2:08 PM CDT	Tornado Warning	BIS	LaMoure	37 min
Aug 9, 3:23 PM CDT	Special Weather Statement	BIS	LaMoure	37 min
Aug 9, 3:30 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure	30 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.