Alert archive / North Dakota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 49, NWS Grand Forks, ND

August 7, 1994Cass County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 7, 1994, 12:34 AM CDT for Cass County, North Dakota. It was in force for 56 min.

The area

The counties it named.

The facts

Issued: Aug 7, 1994, 12:34 AM CDT (05:34 UTC)
Expired: Aug 7, 1994, 1:30 AM CDT
In force: 56 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Cass County, ND

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 5.6 hours before the alert went out and 243 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: 1375 J/kg
Mixed-layer CIN: -165 J/kg
Mixed-layer LCL: 1550 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KFAR 070534 RRA
SVRFAR
NDC017-039-070630-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE FARGO ND
1234 AM CDT SUN AUG 7 1994

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 130 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE EAST CENTRAL PART OF NORTH DAKOTA
      NORTHWEST CASS...SOUTHERN GRIGGS

AT 1230 AM CDT...RADAR INDICATED SEVERE THUNDERSTORMS 30 MILES
NORTH OF VALLEY CITY OR JUST SOUTHWEST OF COOPERSTOWN AND 50 MILES
NORTHWEST OF FARGO NEAR HOPE NORTH DAKOTA MOVING SOUTHEAST AT 25
MILES AN HOUR. SOME TOWNS IN THE WARNING INCLUDE HANNAFORD...
DAZEY AND PAGE.

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.

REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
A TORNADO WITH LITTLE OR NO ADVANCE WARNING...SO BE ON THE LOOKOUT.
IF YOU SPOT A FUNNEL OR A TORNADO YOU SHOULD SEEK SHELTER IN A
REINFORCED BUILDING OR IN AN INTERIOR ROOM AWAY FROM OUTSIDE WALLS.

VOELKER

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, Aug 6, 9:35 PM CDT, 2 hours 59 minutes before

NDZ007-008-016-026>030-038-039-048-049-051>053-MNZ001>004-
007>009-013>017-022>024-027>032-039>041-047-070340-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE FARGO ND
935 PM CDT SAT AUG 6 1994

...STRONG THUNDERSTORMS CONTINUE ACROSS NORTHEAST NORTH DAKOTA...

AT 929 PM CDT A STRONG THUNDERSTORM WAS LOCATED NEAR STARKWEATHER IN
NORTHERN RAMSEY COUNTY OF NORTHEAST NORTH DAKOTA..ABOUT 25 MILES NORTH
OF DEVILS LAKE. THIS STORM WAS MOVING SOUTHEAST AT 20 MILES AN HOUR
AND SHOULD MOVE TO THE EAST OF DEVILS LAKE BY 1030PM.

THIS STORM WILL LIKELY PRODUCE HAIL...HEAVY RAIN AND DEADLY LIGHTNING
STRIKES.

OTHER SHOWERS AND THUNDERSTORMS WERE SCATTERED ACROSS TOWNER AND SOUTHEAST
CAVALIER COUNTY OF NORTHEAST NORTH DAKOTA AND WERE MOVING SOUTHEAST AT 20
MILES AN HOUR.

IF YOU ARE IN THE PATH OF THESE STORMS..BE READY TO GO TO SAFE SHELTER
AS THEY COME YOUR WAY.

PLEASE STAY TUNED TO YOUR LOCAL RADIO OR TELEVISION FOR FURTHER
STATEMENTS ABOUT THESE STORMS.
BENNETT

Special weather statement, Aug 6, 9:42 PM CDT, 2 hours 52 minutes before

NDZ007-008-016-026>030-038-039-048-049-051>053-MNZ001>004-
007>009-013>017-022>024-027>032-039>041-047-070340-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE FARGO ND
935 PM CDT SAT AUG 6 1994

...STRONG THUNDERSTORMS CONTINUE ACROSS NORTHEAST NORTH DAKOTA...

AT 929 PM CDT A STRONG THUNDERSTORM WAS LOCATED NEAR STARKWEATHER IN
NORTHERN RAMSEY COUNTY OF NORTHEAST NORTH DAKOTA..ABOUT 25 MILES NORTH
OF DEVILS LAKE. THIS STORM WAS MOVING SOUTHEAST AT 20 MILES AN HOUR
AND SHOULD MOVE TO THE EAST OF DEVILS LAKE BY 1030PM.

THIS STORM WILL LIKELY PRODUCE HAIL...HEAVY RAIN AND DEADLY LIGHTNING
STRIKES.

OTHER SHOWERS AND THUNDERSTORMS WERE SCATTERED ACROSS TOWNER AND SOUTHEAST
CAVALIER COUNTY OF NORTHEAST NORTH DAKOTA AND WERE MOVING SOUTHEAST AT 20
MILES AN HOUR.

IF YOU ARE IN THE PATH OF THESE STORMS..BE READY TO GO TO SAFE SHELTER
AS THEY COME YOUR WAY.

PLEASE STAY TUNED TO YOUR LOCAL RADIO OR TELEVISION FOR jFURTHER
STATEMENTS ABOUT THESE STORMS.
BENNETT

Local storm report, Aug 6, 11:14 PM CDT, 1 hour 20 minutes before

STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
1115 PM CDT SAT AUG 6 1994

TIME      EVENT
1034 PM   GRIGGS COUNTY SHERIFF REPORTED ONE INCH HAIL NEAR SUTTON ND
          (35 N OF VALLEY CITY).

Local storm report, Aug 6, 11:15 PM CDT, 1 hour 19 minutes before

STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
1115 PM CDT SAT AUG 6 1994

TIME      EVENT
1034 PM   GRIGGS COUNTY SHERIFF REPORTED ONE INCH HAIL NEAR SUTTON ND
          (35 N OF VALLEY CITY).

Local storm report, Aug 6, 11:50 PM CDT, 44 minutes before

STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
1150 PM CDT SAT AUG 6 1994

TIME      EVENT
1150 PM   GRAND FORKS CO.  SHERIFF REPORTED PEA TO MARBLE SIZE HAIL AT
          NORTHWOOD.

1150 PM   GRIGGS CO SHERIFF REPORTED PEA TO MARBLE SIZE HAIL AT COOPERSTOWN
          AND 40 TO 50 MPH WIND.

1150 PM   MAYOR OF TOLNA IN NELSON CO. REPROTED EST. 70 TO 80 MPH WINDS
          GRAIN ELEVATOR AND MOBILE HOME DAMAGED...NUMEROUS TREES DOWN
          DURING PAST HALF HOUR.

Local storm report, Aug 6, 11:56 PM CDT, 38 minutes before

STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
1150 PM CDT SAT AUG 6 1994

TIME      EVENT
1150 PM   GRAND FORKS CO.  SHERIFF REPORTED PEA TO MARBLE SIZE HAIL AT
          NORTHWOOD.

1150 PM   GRIGGS CO SHERIFF REPORTED PEA TO MARBLE SIZE HAIL AT COOPERSTOWN
          AND 40 TO 50 MPH WIND.

1150 PM   MAYOR OF TOLNA IN NELSON CO. REPROTED EST. 70 TO 80 MPH WINDS
          GRAIN ELEVATOR AND MOBILE HOME DAMAGED...NUMEROUS TREES DOWN
          DURING PAST HALF HOUR.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 10:21 PM CDT	Severe Thunderstorm Warning	FGF	Griggs	69 min
Aug 6, 10:36 PM CDT	Severe Thunderstorm Warning	FGF	Nelson	69 min
Aug 6, 11:04 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Steele	56 min
Aug 6, 11:35 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Griggs	55 min
Aug 7, 12:11 AM CDT	Severe Thunderstorm Warning	FGF	Steele, Traill	64 min
Aug 7, 12:34 AM CDT	Severe Thunderstorm Warning	FGF	Griggs	56 min
Aug 7, 1:02 AM CDT	Severe Thunderstorm Warning	FGF	Cass	58 min

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.