Alert archive / North Dakota / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 22, NWS Bismarck, ND

July 7, 1992Morton County, Sioux County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 7, 1992, 4:40 PM MDT for Morton County, Sioux County, North Dakota. It was in force for 65 min.

The area

The counties it named.

The facts

Issued: Jul 7, 1992, 4:40 PM MDT (22:40 UTC)
Expired: Jul 7, 1992, 5:45 PM MDT
In force: 65 min
Issued by: NWS Bismarck, ND
Area: Whole counties

Counties Morton County, ND, Sioux County, ND

The nearest sounding before it

Aberdeen, SD (KHON), launched 12:00Z, 10.7 hours before the alert went out and 273 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1317 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: -155 m²/s²
0-3 km storm-relative helicity: -72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

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, Jul 7, 12:22 PM MDT, 4 hours 18 minutes before

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Special weather statement, Jul 7, 12:58 PM MDT, 3 hours 42 minutes before

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Special weather statement, Jul 7, 1:31 PM MDT, 3 hours 9 minutes before

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Special weather statement, Jul 7, 2:17 PM MDT, 2 hours 23 minutes before

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Special weather statement, Jul 7, 2:19 PM MDT, 2 hours 21 minutes before

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Special weather statement, Jul 7, 4:07 PM MDT, 33 minutes before

NDZ003>014-072330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
505 PM CDT TUE JUL 7 1992

...THUNDERSTORMS WILL CONTINUE OVER THE SOUTH HALF OF NORTH DAKOTA...

AT 5 PM CDT...WEATHER RADAR INDICATED A LINE OF THUNDERSTORMS
ACROSS SOUTHERN NORTH DAKOTA FROM 40 MILES SOUTHEAST OF JAMESTOWN
TO 50 MILES SOUTH OF DICKINSON. THE STRONGEST THUNDERSTORM WAS
LOCATED IN SOUTHERN GRANT COUNTY...50 MILES SOUTHWEST OF BISMARCK.

SMALL HAIL[ AND BRIEF HEAVY RAIN ARE EXPECTED FROM THE THUNDERSTORMS.
SOME FLOODING OF LOW LYING AREAS IS POSSIBLE.

ALL OF THE THUNDERSTORMS WERE MOVING EAST AT 25 MILES AN HOUR.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 6:47 PM MDT	Severe Thunderstorm Warning	BIS	McHenry, Ward	58 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 1992 Every severe thunderstorm warning in 1992

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.