Severe Thunderstorm Warning 162, NWS Grand Forks, ND

Issued

Aug 3, 1997, 4:44 PM CDT (21:44 UTC)

Expired

Aug 3, 1997, 5:15 PM CDT

In force

31 min

Issued by

NWS Grand Forks, ND

Area

Whole counties

County Polk County, MN

The Fargo/Grand Forks radar (KMVX), 74 km from the middle of the area, began a volume at 21:48 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.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

000 
TTAA00 KFAR 032144 RRA
SVRFAR
MNC119-032215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
444 PM CDT SUN AUG 3 1997
 
THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHWEST MINNESOTA
 
   ...EASTERN POLK COUNTY
 
AT 443 PM...RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES WEST OF GULLY
OR 35 MILES SOUTHEAST OF THIEF RIVER FALLS. THIS STORM WAS MOVING
SOUTHEAST AT 15 MPH AND WILL EFFECT THE AREA TO THE SOUTH OF GULLY.
 
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
 
GSF

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 3, 2:45 PM CDT, 1 hour 59 minutes earlier.

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
245 PM CDT SUN AUG 03 1997

VORT MAX SHOWING UP NICELY OVR N CENTRAL MN MOVG SE. WDLY SCT -TSRA
DEVELOPING AHEAD OF WK SFC BOUNDARY FROM BDE TO DLH WITH ASSIST FROM
ABOVE MENTIONED FEATURE. ANOTHER WEAKER VORT SHOWING UP OVR SOUTH
CENTRAL MB WITH TSRA BETWEEN YBR AND YWG ALONG H8 TROF MOVG SOUTHEAST.
AIR MASS ACROSS REGION REMAINS MDTLY UNSTABLE WITH ADAP LIS AROUND -6.
ALSO LOOKING OUT SIDE CU TO EAST SHOWING SOME VERTICAL EXTENT.
DEVELOPING TSRA OVR MN WILL CLIP EASTERN COUNTIES AND WITH S CANADA
CONVECTION MAY HAVE TO INTRODUCE ISOLD OR WDLY SCT TSRA OVER NE ND AND
NW MN FOR EVENING HOURS. REMAINDER OF THE REGION SHOULD REMAIN PCPN
FREE WITH LACK OF ANY SFC FORCING OR UA SUPPORT.

OTWS WESTERN RIDGE PROGGED TO AMPLIFY WITH MORE NORTHERLY FLOW ACROSS
CWFA. H8 CAA/WK DOWNGLIDE FROM I302 SFC PROGGED OVERNIGHT. LOWER MIXING
RATIOS ALSO PROGGED TO SLOWLY SPREAD SOUTHWARD BUT NOT SIGNIFICANTLY.
AGAIN WITH WK SFC FLOW AND CLR SKIES MAY HAVE TO WATCH FOR AREAS OF BR
OVERNIGHT.
FOR DVL...PC WITH ISOLD EVENING TSRA. LOW 55 TO 60. N 5 TO 15.
GFK...PC. LOW AROUND 60. N 5 TO 10.
FAR...PC. LOW LOW 60S. N 5 TO 10.
ROX/BDE/TVF/BJI WDLY SCT EVENING TSRA OTWS PC. LOW 55 TO 60. N 5 TO 10.
DTL/PKD/FFM. PC.  LOW LOWER 60S.
VOELKER

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

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.