Alert archive / North Dakota / Special Weather Statements in 2015

Special Weather Statement, NWS Bismarck, ND

August 5, 2015Pierce County, North Dakota

NWS Bismarck, ND issued this special weather statement at Aug 5, 2015, 7:40 PM CDT for Pierce County, North Dakota. It was in force for 50 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 5, 2015, 7:40 PM CDT (00:40 UTC)
Expired: Aug 5, 2015, 8:30 PM CDT
In force: 50 min
Issued by: NWS Bismarck, ND

County Pierce County, ND

The radar

The Minot AFB radar (KMBX), 63 km from the middle of the area, began a volume at 00:43 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

Aberdeen, SD (KABR), launched 00:00Z, 0.7 hours before the alert went out and 381 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: 91 J/kg
Mixed-layer CIN: -169 J/kg
Mixed-layer LCL: 1609 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 204 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 5, 6:52 PM CDT, 48 minutes earlier.

Area forecast discussion, Aug 5, 6:52 PM CDT, 48 minutes before

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Hazardous weather outlook, Aug 5, 6:55 PM CDT, 45 minutes before

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In the hours before

Special weather statement, Aug 5, 6:14 PM CDT, 1 hour 26 minutes before

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Special weather statement, Aug 5, 7:40 PM CDT, 0 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 6, 7:37 AM CDT	Special Weather Statement	BIS	Emmons	23 min
Aug 6, 7:56 AM CDT	Flash Flood Warning	BIS	Emmons, Logan	6 hr
Aug 6, 8:24 AM CDT	Special Weather Statement	BIS	Logan	36 min
Aug 6, 1:36 PM CDT	Special Weather Statement	BIS	Burleigh, Dickey, Emmons, Kidder, LaMoure, Logan and 2 more	39 min
Aug 6, 1:56 PM CDT	Areal Flood Advisory	BIS	Emmons	3 hr
Aug 6, 2:23 PM CDT	Areal Flood Advisory	BIS	Kidder	3 hr

Nearby

Special Weather Statements in North Dakota, 2015 Every special weather statement in 2015

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.