Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 113, NWS Bismarck, ND

July 30, 2002Golden Valley County, McKenzie County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 30, 2002, 10:26 PM MDT for Golden Valley County, McKenzie County, 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 outline as issued.

The facts

Issued: Jul 30, 2002, 10:26 PM MDT (04:26 UTC)
Expired: Jul 30, 2002, 11:30 PM MDT
In force: 64 min
Issued by: NWS Bismarck, ND
Area: Counties, with a storm outline in the text

Counties Golden Valley County, ND, McKenzie County, ND

The radar

The Glasgow radar (KGGW), 235 km from the middle of the area, began a volume at 04:28 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

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 4.4 hours before the alert went out and 233 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: 120 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 3750 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -28 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

247 
WUUS53 KBIS 310426
SVRBIS
NDC033-053-310530-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
1025 PM MDT TUE JUL 30 2002

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN MCKENZIE COUNTY IN NORTHWEST NORTH DAKOTA
  NORTHERN GOLDEN VALLEY COUNTY IN SOUTHWEST NORTH DAKOTA

* UNTIL 1130 PM MDT(1230 AM CDT)

* AT 1025 PM MDT(1125 PM CDT)...NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A SEVERE THUNDERSTORM OVER TROTTERS...OR ABOUT 58
  MILES SOUTH OF WILLISTON...MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GRASSY BUTTE AT 1105 PM MDT

LAT...LON 4759 10407 4721 10405 4724 10371 4737 10373
          4736 10323 4760 10310

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 30, 9:17 PM MDT	Severe Thunderstorm Warning	BIS	Adams	58 min
Jul 30, 11:08 PM MDT	Severe Thunderstorm Warning	BIS	Sioux	67 min
Jul 31, 1:28 AM MDT	Severe Thunderstorm Warning	BIS	Morton, Stark	47 min
Jul 31, 2:29 AM MDT	Severe Thunderstorm Warning	BIS	Morton	61 min
Jul 31, 3:17 PM MDT	Severe Thunderstorm Warning	BIS	McHenry	58 min
Jul 31, 4:08 PM MDT	Severe Thunderstorm Warning	BIS	Pierce	67 min
Jul 31, 4:10 PM MDT	Severe Thunderstorm Warning	BIS	Ward	50 min
Jul 31, 4:40 PM MDT	Severe Thunderstorm Warning	BIS	McLean	65 min
Jul 31, 5:17 PM MDT	Severe Thunderstorm Warning	BIS	McHenry, Ward	58 min
Jul 31, 5:30 PM MDT	Severe Thunderstorm Warning	BIS	Pierce	45 min
Jul 31, 5:58 PM MDT	Severe Thunderstorm Warning	BIS	Oliver	47 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2002 Every severe thunderstorm warning in 2002

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.