Alert archive / North Dakota / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 134, NWS Bismarck, ND

July 31, 2019Mountrail County, Renville County, Ward County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 31, 2019, 8:39 PM CDT for Mountrail County, Renville County, Ward County, North Dakota. It was in force for 66 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: Jul 31, 2019, 8:39 PM CDT (01:39 UTC)
Expired: Jul 31, 2019, 9:45 PM CDT
In force: 66 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Mountrail County, ND, Renville County, ND, Ward County, ND

The radar

The Minot AFB radar (KMBX), 73 km from the middle of the area, began a volume at 01:43 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 31, 4:51 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.7 hours before the alert went out and 199 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: 1631 J/kg
Mixed-layer CIN: -209 J/kg
Mixed-layer LCL: 1167 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 Jul 31, 5:53 PM CDT, 2 hours 46 minutes earlier.

Area forecast discussion, Jul 31, 5:53 PM CDT, 2 hours 46 minutes before

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Hazardous weather outlook, Jul 31, 5:40 PM CDT, 2 hours 59 minutes before

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In the hours before

Special weather statement, Jul 31, 7:12 PM CDT, 1 hour 27 minutes before

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Local storm report, Jul 31, 7:47 PM CDT, 52 minutes before

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Local storm report, Jul 31, 7:52 PM CDT, 47 minutes before

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Local storm report, Jul 31, 8:15 PM CDT, 24 minutes before

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Local storm report, Jul 31, 8:19 PM CDT, 20 minutes before

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Local storm report, Jul 31, 8:39 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
Jul 31, 7:03 PM CDT	Severe Thunderstorm Warning	BIS	Mountrail	42 min
Jul 31, 7:12 PM CDT	Special Weather Statement	BIS	Bottineau	33 min
Jul 31, 7:17 PM CDT	Areal Flood Advisory	BIS	Dunn	3 hr
Jul 31, 7:43 PM CDT	Severe Thunderstorm Warning	BIS	Mountrail, Renville, Ward	47 min
Jul 31, 8:02 PM CDT	Severe Thunderstorm Warning	BIS	Dunn, Stark	58 min
Jul 31, 8:24 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau, Renville, Ward	51 min
Jul 31, 9:03 PM CDT	Severe Thunderstorm Warning	BIS	Renville, Ward	42 min
Aug 1, 12:26 PM CDT	Special Weather Statement	BIS	McKenzie	34 min
Aug 1, 12:43 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie, Williams	47 min
Aug 1, 1:10 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie, Williams	50 min
Aug 1, 1:34 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie, Williams	28 min
Aug 1, 1:59 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie, Williams	46 min
Aug 1, 2:56 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie	64 min
Aug 1, 3:31 PM CDT	Severe Thunderstorm Warning	BIS	Dunn, McKenzie	44 min
Aug 1, 3:56 PM CDT	Severe Thunderstorm Warning	BIS	Dunn, McKenzie, McLean, Mountrail	64 min
Aug 1, 4:54 PM CDT	Severe Thunderstorm Warning	BIS	McLean	51 min
Aug 1, 6:38 PM CDT	Special Weather Statement	BIS	Oliver	22 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.