Alert archive / North Dakota / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 232, NWS Bismarck, ND

September 20, 2019McLean County, Ward County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Sep 20, 2019, 1:58 PM CDT for McLean County, Ward County, North Dakota. It was in force for 62 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, 2019, 1:58 PM CDT (18:58 UTC)
Expired: Sep 20, 2019, 3:00 PM CDT
In force: 62 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties McLean County, ND, Ward County, ND

The radar

The Minot AFB radar (KMBX), 68 km from the middle of the area, began a volume at 18:57 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 20, 1:50 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 7.0 hours before the alert went out and 139 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: 1602 J/kg
Mixed-layer CIN: -322 J/kg
Mixed-layer LCL: 1356 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 186 m²/s²
0-3 km storm-relative helicity: 128 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, 12:37 PM CDT, 1 hour 21 minutes earlier.

Area forecast discussion, Sep 20, 12:37 PM CDT, 1 hour 21 minutes before

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Hazardous weather outlook, Sep 20, 12:41 PM CDT, 1 hour 17 minutes before

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In the hours before

Special weather statement, Sep 20, 11:10 AM CDT, 2 hours 48 minutes before

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Local storm report, Sep 20, 11:40 AM CDT, 2 hours 18 minutes before

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Local storm report, Sep 20, 12:27 PM CDT, 1 hour 31 minutes before

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Local storm report, Sep 20, 1:03 PM CDT, 55 minutes before

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Special weather statement, Sep 20, 1:25 PM CDT, 33 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, 11:06 PM CDT	Special Weather Statement	BIS	Divide	24 min
Sep 19, 11:27 PM CDT	Special Weather Statement	BIS	Divide	33 min
Sep 20, 12:12 AM CDT	Special Weather Statement	BIS	Divide	33 min
Sep 20, 12:26 AM CDT	Severe Thunderstorm Warning	BIS	Divide	40 min
Sep 20, 11:10 AM CDT	Special Weather Statement	BIS	Mountrail	20 min
Sep 20, 11:26 AM CDT	Severe Thunderstorm Warning	BIS	McKenzie, Mountrail	64 min
Sep 20, 12:18 PM CDT	Severe Thunderstorm Warning	BIS	Mountrail, Ward	43 min
Sep 20, 12:52 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau, Renville	38 min
Sep 20, 1:23 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau	43 min
Sep 20, 1:25 PM CDT	Special Weather Statement	BIS	Mercer	20 min
Sep 20, 2:47 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau, McHenry, Renville, Ward	43 min
Sep 20, 3:23 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton, Sioux	67 min
Sep 20, 3:27 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau	63 min
Sep 20, 4:24 PM CDT	Severe Thunderstorm Warning	BIS	Burleigh	66 min
Sep 20, 4:35 PM CDT	Severe Thunderstorm Warning	BIS	Emmons	55 min
Sep 20, 4:45 PM CDT	Severe Thunderstorm Warning	BIS	Burleigh, Emmons, Morton, Sioux	47 min
Sep 20, 5:07 PM CDT	Severe Thunderstorm Warning	BIS	Sheridan	52 min
Sep 20, 6:01 PM CDT	Special Weather Statement	BIS	Kidder, Wells	29 min
Sep 20, 6:10 PM CDT	Areal Flood Advisory	BIS	Burleigh, Kidder, Sheridan, Wells	3 hr
Sep 20, 6:33 PM CDT	Severe Thunderstorm Warning	BIS	Morton, Sioux	42 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2019 Every severe thunderstorm warning in 2019

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.