Alert archive / North Dakota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 254, NWS Bismarck, ND

July 27, 20084 counties in North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 27, 2008, 12:43 AM MDT for 4 counties in 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: Jul 27, 2008, 12:43 AM MDT (06:43 UTC)
Expired: Jul 27, 2008, 1:45 AM MDT
In force: 62 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon

Counties Adams County, ND, Bowman County, ND, Hettinger County, ND, Slope County, ND

The radar

The Bismarck radar (KBIS), 180 km from the middle of the area, began a volume at 06:44 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 26, 8:57 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 6.7 hours before the alert went out and 184 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: 1479 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 1551 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.7

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 26, 1:13 PM MDT, 11 hours 30 minutes earlier.

Area forecast discussion, Jul 26, 1:13 PM MDT, 11 hours 30 minutes before

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Hazardous weather outlook, Jul 26, 3:21 AM MDT, 21 hours 22 minutes before

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In the hours before

Local storm report, Jul 27, 12:25 AM MDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
125 AM CDT SUN JUL 27 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0124 AM     TSTM WND GST     BOWMAN                  46.18N 103.40W
07/27/2008  M64 MPH          BOWMAN             ND   ASOS

&&

SWICHE

The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 26, 8:54 PM MDT	Severe Thunderstorm Warning	BIS	McKenzie	66 min
Jul 26, 9:57 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Golden Valley, McKenzie	63 min
Jul 26, 10:57 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Golden Valley	63 min
Jul 26, 11:46 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Bowman, Golden Valley, Slope, Stark	59 min
Jul 27, 1:40 AM MDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Hettinger, Sioux	65 min
Jul 27, 2:03 AM MDT	Areal Flood Advisory	BIS	Emmons	5 hr
Jul 27, 2:39 AM MDT	Severe Thunderstorm Warning	BIS	Emmons, Grant, Morton, Sioux	66 min
Jul 27, 2:44 AM MDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Hettinger, Sioux	61 min
Jul 27, 3:33 AM MDT	Severe Thunderstorm Warning	BIS	McIntosh	57 min
Jul 27, 3:43 AM MDT	Severe Thunderstorm Warning	BIS	Emmons	62 min
Jul 27, 4:04 AM MDT	Severe Thunderstorm Warning	BIS	Logan	56 min
Jul 27, 4:32 AM MDT	Severe Thunderstorm Warning	BIS	McIntosh	58 min
Jul 27, 4:50 AM MDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure	55 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2008 Every severe thunderstorm warning in 2008

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.