Alert archive / North Dakota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 136, NWS Bismarck, ND

September 20, 2014Dickey County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Sep 20, 2014, 12:56 PM CDT for Dickey 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: Sep 20, 2014, 12:56 PM CDT (17:56 UTC)
Expired: Sep 20, 2014, 1:17 PM CDT
In force: 21 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 17:57 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 12:00Z, 5.9 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: 1066 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 9 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 Sep 20, 12:42 PM CDT, 14 minutes earlier.

Area forecast discussion, Sep 20, 12:42 PM CDT, 14 minutes before

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Hazardous weather outlook, Sep 20, 12:53 PM CDT, 3 minutes before

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In the hours before

Special weather statement, Sep 20, 8:57 AM CDT, 3 hours 59 minutes before

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Special weather statement, Sep 20, 9:41 AM CDT, 3 hours 15 minutes before

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Special weather statement, Sep 20, 12:36 PM CDT, 20 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
Sep 19, 7:13 PM CDT	Special Weather Statement	BIS	Wells	47 min
Sep 19, 7:22 PM CDT	Special Weather Statement	BIS	Wells	38 min
Sep 19, 7:27 PM CDT	Severe Thunderstorm Warning	BIS	Wells	36 min
Sep 20, 8:57 AM CDT	Special Weather Statement	BIS	McLean	33 min
Sep 20, 9:41 AM CDT	Special Weather Statement	BIS	Pierce	34 min
Sep 20, 12:36 PM CDT	Special Weather Statement	BIS	LaMoure	24 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.