Alert archive / North Dakota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 86, NWS Grand Forks, ND

September 14, 1994Cass County, Traill County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 14, 1994, 9:13 PM CDT for Cass County, Traill County, North Dakota. It was in force for 62 min.

The area

The counties it named.

The facts

Issued: Sep 14, 1994, 9:13 PM CDT (02:13 UTC)
Expired: Sep 14, 1994, 10:15 PM CDT
In force: 62 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

Counties Cass County, ND, Traill County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.2 hours before the alert went out and 269 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: 2312 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 963 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KFAR 150213 RRA
SVRFAR
NDC017-097-150315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE FARGO ND
913 PM CDT WED SEP 14 1994

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1015 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE EAST CENTRAL PART OF NORTH DAKOTA
      WESTERN CASS...TRAILL

AT (910 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 40 MILES NORTH
WEST OF FARGO NORTH DAKOTA MOVING NORTH AT 25 TO 30 MPH. SOME TOWNS
INCLUDED IN THIS WARNING ARE HUNTER...ARTHUR MAYVILLE/PORTLAND AND
HILLSBORO NORTH DAKOTA.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.

ANDERSEN

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, Sep 14, 8:40 PM CDT, 33 minutes before

NDZ007-008-016-026>030-038-039-048-049-051>053-MNZ001>004-
007>009-013>017-022>024-027>032-039>041-047-150240-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE FARGO ND
840 PM CDT WED SEP 14 1994

...STRONG THUNDERSTORMS HAVE DEVELOPED OVER SOUTHEAST NORTH DAKOTA...

AT 827 PM CDT...STRONG THUNDERSTORMS...WHICH CONTAINED VERY HEAVY RAIN
...SMALL HAIL AND FREQUENT LIGHTNING HAVE DEVELOPED OVER SOUTHEAST NORTH
DAKOTA...OVER SOUTHWEST CASS AND EASTERN RANSOM COUNTIES.

THESE STRONG THUNDERSTORMS EXTENDED FROM SOUTHWEST OF FARGO NEAR THE TOWN
OF CHAFFEE...SOUTHWARD TO JUST EAST OF LISBON. THESE STORMS WERE MOVING
NORTH AT AROUND 15 MILES AN HOUR AND MAY CAUSE SOME FLOODING ESPECIALLY
OVER LOW LYING AREAS AND ALONG SMALL STREAMS DUE TO THE SLOW MOVEMENT.

PERSONS OVER CASS...EASTERN RANSOM AND EXTREME NORTHERN RICHLAND COUNTIES
OF SOUTHEAST NORTH DAKOTA SHOULD STAY ALERT AND BE READY TO MOVE TO A
PLACE OF SAFETY IF THESE STRONG THUNDERSTORMS BECOME SEVERE.
.
OTHER WIDELY SCATTERED SHOWERS AND THUNDERSHOWERS CONTINUED OVER
NORTH CENTRAL MINNESOTA...GENERALLY FROM SOUTHWEST OF BEMIDJI TO
SOUTHWEST OF GRAND RAPIDS.

STAY TUNED FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS ON THESE
DEVELOPING STRONG THUNDERSTORMS.
SPIES

Special weather statement, Sep 14, 8:42 PM CDT, 31 minutes before

NDZ007-008-016-026>030-038-039-048-049-051>053-MNZ001>004-
007>009-013>017-022>024-027>032-039>041-047-150240-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE FARGO ND
840 PM CDT WED SEP 14 1994

...STRONG THUNDERSTORMS HAVE DEVELOPED OVER SOUTHEAST NORTH DAKOTA...

AT 827 PM CDT...STRONG THUNDERSTORMS...WHICH CONTAINED VERY HEAVY RAIN
...SMALL HAIL AND FREQUENT LIGHTNING HAVE DEVELOPED OVER SOUTHEAST NORTH
DAKOTA...OVER SOUTHWEST CASS AND EASTERN RANSOM COUNTIES.

THESE STRONG THUNDERSTORMS EXTENDED FROM SOUTHWEST OF FARGO NEAR THE TOWN
OF CHAFFEE...SOUTHWARD TO JUST EAST OF LISBON. THESE STORMS WERE MOVING
NORTH AT AROUND 15 MILES AN HOUR AND MAY CAUSE SOME FLOODING ESPECIALLY
OVER LOW LYING AREAS AND ALONG SMALL STREAMS DUE TO THE SLOW MOVEMENT.

PERSONS OVER CASS...EASTERN RANSOM AND EXTREME NORTHERN RICHLAND COUNTIES
OF SOUTHEAST NORTH DAKOTA SHOULD STAY ALERT AND BE READY TO MOVE TO A
PLACE OF SAFETY IF THESE STRONG THUNDERSTORMS BECOME SEVERE.
.
OTHER WIDELY SCATTERED SHOWERS AND THUNDERSHOWERS CONTINUED OVER
NORTH CENTRAL MINNESOTA...GENERALLY FROM SOUTHWEST OF BEMIDJI TO
SOUTHWEST OF GRAND RAPIDS.

STAY TUNED FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS ON THESE
DEVELOPING STRONG THUNDERSTORMS.
SPIES

Nearby

Severe Thunderstorm Warnings in North Dakota, 1994 Every severe thunderstorm warning in 1994

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.