Alert archive / North Dakota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 137, NWS Bismarck, ND

July 23, 20154 counties in North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 23, 2015, 7:11 PM CDT for 4 counties in North Dakota. It was in force for 64 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 23, 2015, 7:11 PM CDT (00:11 UTC)
Expired: Jul 23, 2015, 8:15 PM CDT
In force: 64 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.25 in
Wind: 70.0 mph

Counties Burleigh County, ND, McLean County, ND, Mercer County, ND, Oliver County, ND

The radar

The Bismarck radar (KBIS), 65 km from the middle of the area, began a volume at 00:12 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 23, 3:58 PM CDT	Severe Thunderstorm Watch	SPC	11 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.2 hours before the alert went out and 67 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: 1074 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 2327 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

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 Jul 23, 6:55 PM CDT, 16 minutes earlier.

Area forecast discussion, Jul 23, 6:55 PM CDT, 16 minutes before

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Hazardous weather outlook, Jul 23, 6:44 PM CDT, 27 minutes before

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In the hours before

Local storm report, Jul 23, 5:49 PM CDT, 1 hour 22 minutes before

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Local storm report, Jul 23, 6:04 PM CDT, 1 hour 7 minutes before

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Local storm report, Jul 23, 6:06 PM CDT, 1 hour 5 minutes before

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Local storm report, Jul 23, 6:48 PM CDT, 23 minutes before

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Local storm report, Jul 23, 6:51 PM CDT, 20 minutes before

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Special weather statement, Jul 23, 7:08 PM CDT, 3 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 23, 7:01 PM CDT	Severe Thunderstorm Warning	BIS	McLean, Mercer, Sheridan	38 min
Jul 23, 7:04 PM CDT	Severe Thunderstorm Warning	BIS	Grant	56 min
Jul 23, 7:06 PM CDT	Severe Thunderstorm Warning	BIS	Pierce, Rolette	54 min
Jul 23, 7:08 PM CDT	Special Weather Statement	BIS	Burleigh	37 min
Jul 23, 7:51 PM CDT	Areal Flood Advisory	BIS	Burleigh, McLean, Oliver	3 hr
Jul 23, 8:00 PM CDT	Severe Thunderstorm Warning	BIS	Burleigh, McLean	60 min
Jul 23, 8:11 PM CDT	Special Weather Statement	BIS	Burleigh	49 min
Jul 23, 8:16 PM CDT	Severe Thunderstorm Warning	BIS	Burleigh, Kidder, Sheridan, Wells	59 min
Jul 23, 8:49 PM CDT	Special Weather Statement	BIS	Burleigh	41 min
Jul 23, 9:13 PM CDT	Severe Thunderstorm Warning	BIS	Foster, Kidder, Stutsman, Wells	62 min
Jul 23, 9:43 PM CDT	Severe Thunderstorm Warning	BIS	Foster, Stutsman	62 min
Jul 23, 10:12 PM CDT	Special Weather Statement	BIS	Stutsman	63 min
Jul 23, 10:16 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Logan, Stutsman	59 min
Jul 24, 6:53 PM CDT	Special Weather Statement	BIS	Renville	37 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2015 Every severe thunderstorm warning 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.