Alert archive / North Dakota / Special Weather Statements in 2021
Special Weather Statement, NWS Bismarck, ND
NWS Bismarck, ND issued this special weather statement at Aug 30, 2021, 7:50 PM MDT for Dunn County, North Dakota. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 30, 2021, 7:50 PM MDT (01:50 UTC)
- Expired
- Aug 30, 2021, 8:15 PM MDT
- In force
- 25 min
- Issued by
- NWS Bismarck, ND
- Hail
- 0.75 in
- Wind
- 30
County Dunn County, ND
The radar
The Minot AFB radar (KMBX), 150 km from the middle of the area, began a volume at 01:53 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 nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 1.8 hours before the alert went out and 163 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.
- Mixed-layer CAPE
- 236 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 2280 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Aug 30, 6:49 PM MDT, 1 hour 1 minute earlier.
Area forecast discussion, Aug 30, 6:49 PM MDT, 1 hour 1 minute before
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</html>Hazardous weather outlook, Aug 30, 7:48 PM MDT, 2 minutes before
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</html>In the hours before
Local storm report, Aug 30, 6:16 PM MDT, 1 hour 34 minutes before
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</html>Local storm report, Aug 30, 6:21 PM MDT, 1 hour 29 minutes before
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</html>Local storm report, Aug 30, 7:17 PM MDT, 33 minutes before
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</html>Local storm report, Aug 30, 7:18 PM MDT, 32 minutes before
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</html>Local storm report, Aug 30, 7:34 PM MDT, 16 minutes before
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</html>Special weather statement, Aug 30, 7:50 PM MDT, 0 minutes before
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</html>Nearby
Special Weather Statements in North Dakota, 2021Every special weather statement in 2021
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.