Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 37, NWS Grand Forks, ND

July 22, 1994Marshall County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 22, 1994, 10:16 PM CDT for Marshall County, Minnesota. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Jul 22, 1994, 10:16 PM CDT (03:16 UTC)
Expired
Jul 22, 1994, 11:15 PM CDT
In force
59 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Marshall County, MN

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 3.3 hours before the alert went out and 227 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-pSkew-T log-p diagram, International Fa, MN at 00:00Z on 1994-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 00:00Z on 1994-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1529 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
50 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.

000 
TTAA00 KFAR 230316 RRA
SVRFAR
MNC089-230415-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE FARGO ND
1016 PM CDT FRI JUL 22 1994

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1115 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE NORTHWEST PART OF MINNESOTA
      MARSHALL

AT 1010 PM CDT A SEVERE THUNDERSTORM WAS MOVING INTO WESTERN
MARSHALL COUNTY OF NORTHWEST MINNESOTA AND ANOTHER STRONG STORM
WAS MOVING INTO THE NORTHWEST PART OF MARSHALL COUNTY. THESE STORMS
WILL LIKELY MERGE IN CENTRAL MARSHALL COUNTY.  MOVEMENT WAS EAST
SOUTH EAST AT 35 MILES AN HOUR.

PERSONS IN MARSHALL COUNTY MINNESOTA SHOULD SEEK SAFE SHELTER.

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.

IF YOU ARE CAUGHT OUTSIDE...FIND SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE POSSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

BENNETT

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

Local storm report, Jul 22, 8:46 PM CDT, 1 hour 30 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
845 PM CDT FRI JUL 22 1994

TIME      EVENT
835  PM CDT     JUST WEST OF HALLOCK MINNESOTA IN KITTSON COUNTY PEA TO
                MARBLE SIZE HAIL COVERING THE GROUND.  VERY HEAVY RAIN.
                KITTSON COUNTY S. O.

840 PM CDT      HALLOCK MINNESOTA VERY HEAVY RAIN AND PEA TO MARBLE SIZE
                HAIL IN THE CITY.  KITTSON S. O.

BENNETT
Local storm report, Jul 22, 9:05 PM CDT, 1 hour 11 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
905 PM CDT FRI JUL 22 1994

TIME            EVENT
835  PM CDT     AT JOLIETTE MINNESOTA D. O. T. SCALES STATION. 60 MPH
                WIND AND PEA TO MARBLE SIZE HAIL UP TO ONE FOOT DEEP
                AROUND THE BUILDING.  KITTSON COUNTY S. O.  ALSO A REPORT
                THAT IN THE JOLIETTE AREA CROPS WERE TOTALLY WIPED OUT BY
                PEA TO MARBLE SIZE HAIL COVERING THE GROUND.  JOLIETTE
                IS LOCATED ON THE MINNESOTA SIDE OF I-29 IN WESTERN
                KITTSON COUNTY.

BENNETT
Local storm report, Jul 22, 9:10 PM CDT, 1 hour 6 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
905 PM CDT FRI JUL 22 1994

TIME            EVENT
835  PM CDT     AT JOLIETTE MINNESOTA D. O. T. SCALES STATION. 60 MPH
                WIND AND PEA TO MARBLE SIZE HAIL UP TO ONE FOOT DEEP
                AROUND THE BUILDING.  KITTSON COUNTY S. O.  ALSO A REPORT
                THAT IN THE JOLIETTE AREA CROPS WERE TOTALLY WIPED OUT BY
                PEA TO MARBLE SIZE HAIL COVERING THE GROUND.  JOLIETTE
                IS LOCATED ON THE MINNESOTA SIDE OF I-29 IN WESTERN
                KITTSON COUNTY.

BENNETT
Special weather statement, Jul 22, 9:51 PM CDT, 25 minutes before
NDZ007-008-016-026>030-038-039-048-049-051>053-MNZ001>004-
007>009-013>017-022>024-027>032-039>041-047-230335-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE FARGO ND
950 PM CDT FRI JUL 23 1994

AT 927 AM CDT...AN AREA OF STRONG THUNDERSTORMS CONTINUED OVER
NORTHEASTERN NORTH DAKOTA AND NORTHWESTERN MINNESOTA.

THE STRONGEST THUNDERSTORM WAS BETWEEN PARK RIVER AND GRAFTON IN
NORTHEASTERN NORTH DAKOTA.  IT IS CAPABLE OF PRODUCING DANGEROUS
LIGHTNING...STRONG WIND...HEAVY RAIN...AND HAIL.

IT WAS MOVING TO THE EAST AT 35 MILES PER HOUR AND HAS ACCELERATED
IN THE PAST 15 MINUTES.  IT WILL MOVE NEAR GRAFTON AND DRAYTON BY
1030 PM.

PEOPLE IN THE PATH OF THIS STORM SHOULhD BE PREPARED TO SEEK SHELTER
AS THIS STORM APPROACHES.
^
JEURISSEN
Local storm report, Jul 22, 10:03 PM CDT, 13 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
1003 PM CDT FRI JUL 22 1994

TIME            EVENT
10   PM CDT     PEA SIZE HAIL AND HEAVY RAIN 10 MILES SOUTHEAST OF GRAFTON
                IN EASTERN WALSH COUNTY OF NORTHEAST NORTH DAKOTA. GRAFTON
                P. D.

BENNETT
Local storm report, Jul 22, 10:04 PM CDT, 12 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
1003 PM CDT FRI JUL 22 1994

TIME            EVENT
10   PM CDT     PEA SIZE HAIL AND HEAVY RAIN 10 MILES SOUTHEAST OF GRAFTON
                IN EASTERN WALSH COUNTY OF NORTHEAST NORTH DAKOTA. GRAFTON
                P. D.

BENNETT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 8:27 PM CDTSevere Thunderstorm WarningFGFKittson63 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1994Every 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.