Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 39, NWS Grand Forks, ND

June 22, 1997Richland County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 22, 1997, 9:49 PM CDT for Richland County, North Dakota. It was in force for 26 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 22, 1997, 9:49 PM CDT (02:49 UTC)
Expired: Jun 22, 1997, 10:15 PM CDT
In force: 26 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Richland County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 143 km from the middle of the area, began a volume at 02:50 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.

What was reported inside it

Time	Report	Where	Remark
Jun 22, 9:50 PM CDT	Hail 1.75	Lidgerwood, ND
Jun 22, 10:25 PM CDT	Hail 1.75	Fairmount, 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.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.8 hours before the alert went out and 189 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.

293 
WUUS1 KFAR 230248 RRA
SVRFAR
NDC077-230315-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
949 PM CDT SUN JUN 22 1997
 
THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1015 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST NORTH DAKOTA
 
   ...RICHLAND COUNTY
 
AT 945 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES SOUTH OF
LIDGERWOOD...OR 30 MILES SOUTHWEST OF WAHPETON. THE STORM WAS MOVING
NORTHEAST AT 30 MPH. LARGE HAIL AND HEAVY RAIN CAN BE EXPECETD FROM THIS
STORM. THE STORM WILL CROSS STATE HIGHWAY 18 ABOUT 5 MILES NORTH OF
HANKINSON BY 1010 PM CDT.
 
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 7:05 PM CDT	Severe Thunderstorm Warning	FGF	Barnes	25 min
Jun 22, 7:31 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass	29 min
Jun 22, 8:02 PM CDT	Severe Thunderstorm Warning	FGF	Cass	28 min
Jun 22, 8:26 PM CDT	Severe Thunderstorm Warning	FGF	Steele, Traill	34 min
Jun 22, 8:33 PM CDT	Severe Thunderstorm Warning	FGF	Cass	27 min
Jun 22, 10:12 PM CDT	Severe Thunderstorm Warning	FGF	Richland	33 min
Jun 22, 11:59 PM CDT	Severe Thunderstorm Warning	FGF	Ramsey	31 min
Jun 23, 12:56 AM CDT	Severe Thunderstorm Warning	FGF	Cass	34 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.