Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 6, NWS Grand Forks, ND

June 2, 1997Barnes County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 2, 1997, 1:05 AM CDT for Barnes County, North Dakota. It was in force for 40 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 2, 1997, 1:05 AM CDT (06:05 UTC)
Expired
Jun 2, 1997, 1:45 AM CDT
In force
40 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Barnes County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 6.1 hours before the alert went out and 201 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, Bismarck Municip, ND at 00:00Z on 1997-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1437 joules per kilogram.LCLLFCEL10008507005003002001001 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, Bismarck Municip, ND at 00:00Z on 1997-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 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
1437 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
1285 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFAR 020607 RRA
SVRFAR
NDC003-020645-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
105 AM CDT MON JUN 2 1997
 
THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  145 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST NORTH DAKOTA
 
   ...BARNES COUNTY
 
AT 104 AM...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES
SOUTHWEST OF THE VALLEY CITY AREA. THIS THUNDERSTORM IS MOVING NORTHEAST
AT 15 MPH AND WILL AFFECT THE CITY OF ORISKA BY 120 AM.
 
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

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 1, 8:49 PM CDT, 4 hours 16 minutes earlier.

Area forecast discussion, Jun 1, 8:49 PM CDT, 4 hours 16 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
845 PM CDT SUN JUN 1 1997

21Z RUC SLOWLY MOVES BOUNDARY EAST OVERNIGHT APPROACHING RRV TOWARDS
AM.  MOST OF TSRA HAS BEEN OVR CENTRAL ND IN H8 THETA-E RIDGE ALONG SFC
BOUNDARY WHERE TDS HAVE BEEN IN THE 60S AND OVER THE EXTREME NE ALONG
CONVERGENCE BOUNDARY FROM ADAP SSW. ATTM FEEL SEVERE THREAT HAS SHIFTED
SOUTH INTO SOUTH DAKOTA IN AREA OF STABILITY MINIMA. HOWEVER AS SFC
BOUNDARY...H8 THETA-E RIDGE SHIFTS EAST TSRA SHOULD CONT TO SPREAD
EAST. WITH GENERAL SLOW MOVEMENT OF CELLS AND 00Z BIS PWAT AT 1.36 AND
K INDEX AT 37 WILL MENTION HEAVY RAIN POSSIBLE. STRONG CONVECTION TO
OUR SOUTH MAY EVENTUALLY CUT OFF SOME OF THE AVAILABLE MOISTURE. WILL
MAKE SOME ADJUSTMENTS TO TSRA WORDING. WITH FRONT REACHING ONLY WESTERN
PTNS OF CWA TOWARD AM REST OF CWFA WILL STAY FAIRLY MILD. 21Z RUC 2METER
TEMPS VERIFIED WELL AND WILL GO WITH THEM AND RAISE MINS A NOTCH OVR E
ND. H8 PROG OF 30KTS SHOULD KEEP WINDS IN 10 TO 20 MPH RANGE WHICH WILL
ALSO HOLD TEMPS UP.
VOELKER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 2, 3:56 AM CDTFlash Flood WarningFGFBarnes4 hr

Nearby

Severe Thunderstorm Warnings in North Dakota, 1997Every 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.