Alert archive / North Dakota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 220, NWS Bismarck, ND

July 19, 2018Sheridan County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 19, 2018, 8:53 PM CDT for Sheridan County, North Dakota. It was in force for 67 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 19, 2018, 8:53 PM CDT (01:53 UTC)
Expired: Jul 19, 2018, 10:00 PM CDT
In force: 67 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Sheridan County, ND

The radar

The Bismarck radar (KBIS), 95 km from the middle of the area, began a volume at 01:54 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.9 hours before the alert went out and 93 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: 544 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 2227 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 19, 6:42 PM CDT, 2 hours 11 minutes earlier.

Area forecast discussion, Jul 19, 6:42 PM CDT, 2 hours 11 minutes before

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Hazardous weather outlook, Jul 19, 6:43 PM CDT, 2 hours 10 minutes before

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In the hours before

Special weather statement, Jul 19, 7:45 PM CDT, 1 hour 8 minutes before

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Local storm report, Jul 19, 7:57 PM CDT, 56 minutes before

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Local storm report, Jul 19, 8:11 PM CDT, 42 minutes before

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Special weather statement, Jul 19, 8:22 PM CDT, 31 minutes before

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Special weather statement, Jul 19, 8:36 PM CDT, 17 minutes before

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Local storm report, Jul 19, 8:49 PM CDT, 4 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 19, 7:09 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Sioux	66 min
Jul 19, 7:45 PM CDT	Special Weather Statement	BIS	Ward	30 min
Jul 19, 8:22 PM CDT	Special Weather Statement	BIS	Emmons, Grant, Sioux	53 min
Jul 19, 8:36 PM CDT	Special Weather Statement	BIS	Foster	54 min
Jul 19, 9:04 PM CDT	Special Weather Statement	BIS	Sheridan	41 min
Jul 19, 9:41 PM CDT	Special Weather Statement	BIS	Burleigh	49 min
Jul 19, 9:59 PM CDT	Special Weather Statement	BIS	Stutsman	46 min
Jul 19, 10:45 PM CDT	Special Weather Statement	BIS	Sheridan	45 min
Jul 19, 10:54 PM CDT	Areal Flood Advisory	BIS	Stutsman	5 hr

Nearby

Severe Thunderstorm Warnings in North Dakota, 2018 Every severe thunderstorm warning in 2018

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.