Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 46, NWS Grand Forks, ND

June 23, 1997Clay County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 23, 1997, 1:29 AM CDT for Clay County, Minnesota. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 23, 1997, 1:29 AM CDT (06:29 UTC)
Expired: Jun 23, 1997, 2:00 AM CDT
In force: 31 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Clay County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 95 km from the middle of the area, began a volume at 06:31 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 6.5 hours before the alert went out and 266 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: 1720 J/kg
Mixed-layer CIN: -221 J/kg
Mixed-layer LCL: 1224 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 320 m²/s²
0-3 km storm-relative helicity: 538 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 33.1

Open this sounding in Storm Lab

The text

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

369 
WUUS1 KFAR 230630 RRA
SVRFAR
MNC027-230700-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
129 AM CDT MON JUN 23 1997
 
THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  200 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL MINNESOTA
 
   ...CLAY COUNTY
 
AT 126 AM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS
EXTENDING FROM 5 MILES EAST OF GEORGETOWN TO COMSTOCK...OR 20 MILES
NORTHEAST TO 15 MILES SOUTH OF FARGO...MOVING EAST AT 35 MPH. CITIES
IN THE PATH OF THESE SEVERE THUNDERSTORMS ARE SABIN...GLYNDON...FELTON
AND DOWNER.
 
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
 
NG

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.

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 9:01 PM CDT, 4 hours 28 minutes earlier.

Area forecast discussion, Jun 22, 9:01 PM CDT, 4 hours 28 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
900 PM CDT SUN JUN 22 1997

FIRST PERIOD DISCUSSION...STRMS CONT TO OCCUR ALNG A THETA E GRAD
IN ERN ND. GRAD FCST TO MOV SLOLY NE AND E OVRNT. ADAP HAS
QUITE STRNG MOIST CNVG ALNG THE WRN N AND S DAK BRDR. APPARENTLY
CNVG AND UPSLOPE STRNG ENUF WITH STRMS FIRING IN THE HI PLNS.
THINK THESE STRMS COULD REACH CWA LATER TNGT. SNDGS QUITE UNSTABLE
TO THE S BUT MOST HAVE EITHER A CAP OR A FAIRLY HIGH NEG AREA XCPT
FOR UNR.  SFC DWPTS GENERALLY IN THE 60S...SO A HUMID NIGHT FCST.
WL CHECK OVR ZONES BUT WILL LIKELY LEAVE AS IS.

HOPPES

In the hours before

Local storm report, Jun 22, 10:35 PM CDT, 2 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1034 PM CDT SUN JUN 22 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION."...

1O25 PM    4W FAIRMOUNT              ND   GOLFBALL SIZE HAIL
06/22/97   RICHLAND

Local storm report, Jun 22, 11:27 PM CDT, 2 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1127 PM CDT SUN JUN 22 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1125 PM    NORCROSS                  MN   1-1.5 INCH HAIL
06/22/97   GRANT

Local storm report, Jun 22, 11:28 PM CDT, 2 hours 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1127 PM CDT SUN JUN 22 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION.z...

1125 PM    NORCROSS                  MN   1-1.5 INCH HAIL
06/22/97   GRANT

Local storm report, Jun 23, 12:39 AM CDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1239 AM CDT MON JUN 23 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1158 PM    3 SW ELBOW LAKE           MN   1 INCH HAIL
06/22/97   GRANT

1203 AM    3 S ELBOW LAKE            MN   1.75 INCH HAIL
06/23/97

Local storm report, Jun 23, 12:44 AM CDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1239 AM CDT MON JUN 23 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1158 PM    3 SW ELBOW LAKE           MN   1 INCH HAIL
06/22/97   GRANT

1203 AM    3 S ELBOW LAKE            MN   1.75 INCH HAIL
06/23/97

Local storm report, Jun 23, 1:10 AM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
110 AM CDT MON JUN 23 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0105 AM    MAPLETON                  ND   60 MPH WIND
06/23/97   CASS

0100 AM    WEST FARGO                ND   TREE DAMAGE
06/23/97   CASS                           6 IN. DIA TREE FELL
                                          ON HOUSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 11:06 PM CDT	Severe Thunderstorm Warning	FGF	Grant	39 min
Jun 22, 11:45 PM CDT	Severe Thunderstorm Warning	FGF	Grant	45 min
Jun 23, 1:00 AM CDT	Severe Thunderstorm Warning	FGF	Clay	30 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1997 Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.