Severe Thunderstorm Warning 166, NWS Grand Forks, ND

Issued

Aug 3, 1997, 5:49 PM CDT (22:49 UTC)

Expired

Aug 3, 1997, 6:30 PM CDT

In force

41 min

Issued by

NWS Grand Forks, ND

Area

Whole counties

County Towner County, ND

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.

011 
WUUS1 KFAR 032250 RRA
SVRFAR
NDC095-032330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
549 PM CDT SUN AUG 3 1997
 
THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  630 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL NORTH DAKOTA
 
   ...TOWNER COUNTY
 
AT 547 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES NORTHEAST OF
HANSBORO...OR 50 MILES NORTHWEST OF LANGDON. THE STORM WAS MOVING SOUTHE
TAT 20 MPH. THE TOWN OF ROCKLAKE IS IN THE PATH OF THIS STORM.
 
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES. GO TO A
SAFE SHELTER IF THIS STORM APPROACHES YOUR AREA.
 
KENNEDY

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 3, 2:45 PM CDT, 3 hours 4 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 North Dakota, 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.