Alert archive / North Dakota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 106, NWS Bismarck, ND

August 17, 2014Pierce County, Rolette County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 17, 2014, 5:45 PM CDT for Pierce County, Rolette County, North Dakota. It was in force for 21 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 17, 2014, 5:45 PM CDT (22:45 UTC)
Expired: Aug 17, 2014, 6:06 PM CDT
In force: 21 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Pierce County, ND, Rolette County, ND

The radar

The Minot AFB radar (KMBX), 72 km from the middle of the area, began a volume at 22:47 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 17, 3:52 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 10.8 hours before the alert went out and 203 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: 154 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 634 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 17, 4:02 PM CDT, 1 hour 43 minutes earlier.

Area forecast discussion, Aug 17, 4:02 PM CDT, 1 hour 43 minutes before

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Hazardous weather outlook, Aug 17, 4:01 PM CDT, 1 hour 44 minutes before

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In the hours before

Special weather statement, Aug 17, 5:00 PM CDT, 45 minutes before

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Special weather statement, Aug 17, 5:08 PM CDT, 37 minutes before

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Local storm report, Aug 17, 5:11 PM CDT, 34 minutes before

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Special weather statement, Aug 17, 5:28 PM CDT, 17 minutes before

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Special weather statement, Aug 17, 5:34 PM CDT, 11 minutes before

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Special weather statement, Aug 17, 5:38 PM CDT, 7 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 16, 7:19 PM CDT	Special Weather Statement	BIS	Bowman, Slope	41 min
Aug 16, 7:33 PM CDT	Areal Flood Advisory	BIS	Stutsman	3 hr
Aug 16, 7:57 PM CDT	Special Weather Statement	BIS	Bowman, Slope	48 min
Aug 16, 8:42 PM CDT	Special Weather Statement	BIS	Billings	48 min
Aug 16, 9:14 PM CDT	Special Weather Statement	BIS	Billings	61 min
Aug 16, 10:29 PM CDT	Areal Flood Advisory	BIS	Stutsman	6 hr
Aug 17, 1:01 PM CDT	Special Weather Statement	BIS	Bowman	29 min
Aug 17, 1:31 PM CDT	Special Weather Statement	BIS	Renville	29 min
Aug 17, 1:35 PM CDT	Special Weather Statement	BIS	Bowman	25 min
Aug 17, 1:58 PM CDT	Special Weather Statement	BIS	Renville	32 min
Aug 17, 1:58 PM CDT	Severe Thunderstorm Warning	BIS	Bowman, Slope	47 min
Aug 17, 2:36 PM CDT	Special Weather Statement	BIS	Bottineau	54 min
Aug 17, 2:44 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Bowman	49 min
Aug 17, 3:21 PM CDT	Special Weather Statement	BIS	Bottineau	39 min
Aug 17, 3:37 PM CDT	Severe Thunderstorm Warning	BIS	McHenry, Ward	55 min
Aug 17, 3:45 PM CDT	Special Weather Statement	BIS	Adams, Bowman, Hettinger	60 min
Aug 17, 4:16 PM CDT	Special Weather Statement	BIS	Adams, Bowman, Grant	44 min
Aug 17, 4:19 PM CDT	Special Weather Statement	BIS	Rolette	41 min
Aug 17, 4:45 PM CDT	Special Weather Statement	BIS	McHenry	60 min
Aug 17, 5:00 PM CDT	Special Weather Statement	BIS	Grant, Morton	30 min
Aug 17, 5:08 PM CDT	Special Weather Statement	BIS	Pierce	52 min
Aug 17, 5:28 PM CDT	Special Weather Statement	BIS	Adams	32 min
Aug 17, 5:34 PM CDT	Special Weather Statement	BIS	Sioux	26 min
Aug 17, 5:38 PM CDT	Special Weather Statement	BIS	Rolette	37 min
Aug 17, 5:49 PM CDT	Special Weather Statement	BIS	Burleigh	26 min
Aug 17, 6:11 PM CDT	Special Weather Statement	BIS	McHenry	64 min
Aug 17, 6:13 PM CDT	Special Weather Statement	BIS	Burleigh, Emmons	32 min
Aug 17, 6:17 PM CDT	Special Weather Statement	BIS	McHenry	58 min
Aug 17, 6:48 PM CDT	Special Weather Statement	BIS	Burleigh	27 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2014 Every severe thunderstorm warning in 2014

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.