Alert archive / North Dakota / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 9, NWS Bismarck, ND

June 8, 1991Dunn County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 8, 1991, 4:08 PM MDT for Dunn County, North Dakota. It was in force for 67 min.

The area

The counties it named.

The facts

Issued: Jun 8, 1991, 4:08 PM MDT (22:08 UTC)
Expired: Jun 8, 1991, 5:15 PM MDT
In force: 67 min
Issued by: NWS Bismarck, ND
Area: Whole counties

County Dunn County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 10.1 hours before the alert went out and 159 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: 22 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 865 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Jun 8, 1:34 PM MDT, 2 hours 34 minutes before

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Special weather statement, Jun 8, 2:17 PM MDT, 1 hour 51 minutes before

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Special weather statement, Jun 8, 2:32 PM MDT, 1 hour 36 minutes before

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Special weather statement, Jun 8, 2:48 PM MDT, 1 hour 20 minutes before

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Special weather statement, Jun 8, 3:10 PM MDT, 58 minutes before

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Special weather statement, Jun 8, 3:55 PM MDT, 13 minutes before

NDZ002>003-005-092250-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLISTON ND
450 PM CDT SAT JUN 8 1991

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PORTIONS OF WESTERN NORTH
DAKOTA UNTILL 11 PM CDT...
...THUNDERSTORMS WITH HEAVY RAIN CONTINUE OVER WESTERN NORTH DAKOTA...

AT 445 PM CDT...NATIONAL WEATHER SERVICE RADAR IN WILLISTON INDICATED
THUNDERSTORMS WITH VERY HEAVY RAIN 40 MILES NORTHWEST OF DICKINSON
IN EAST CENTRAL BILLINGS COUNTY. THUNDERSTORMS WERE ALSO OCCURRING
50 MILES NORTH OF DICKINSON IN CENTRAL DUNN COUNTY OVER THE TOWNS
OF MANNING AND KILLDEER. NO SEVERE WEATHER HAS BEEN REPORTED WITH
THESE STORMS BUT THEY HAVE PRODUCED VERY HEAVY RAIN.

THESE STORMS WERE MOVING TO THE NORTHEAST AT 15 MPH.

THESE STORMS ARE CAPABLE OF HEAVY RAINS...HAIL...GUSTY WINDS AND DEADLY
LIGHTNING STRIKES.  IF THREATENING WEATHER APRAOCHES YOUR AREA
MOVE TO A SAVE SHELTER.

THESE STORMS ARE MOVING OVER AREAS WHERE PREVIOUS STORMS HAVE
BEEN AND FLOODING OF LOW LYING AREAS IS POSSIBLE. DO NOT ATTEMPT
TO CROSS ROADWAYS THAT ARE WATER COVERED.

RICHMOND

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 5:38 PM MDT	Tornado Warning	BIS	Bowman, Slope	37 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 1991 Every severe thunderstorm warning in 1991

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.