Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 96, NWS Grand Forks, ND

June 28, 1997Ransom County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 28, 1997, 8:47 AM CDT for Ransom County, North Dakota. It was in force for 28 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 28, 1997, 8:47 AM CDT (13:47 UTC)
Expired: Jun 28, 1997, 9:15 AM CDT
In force: 28 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Ransom County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 122 km from the middle of the area, began a volume at 13:51 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 12:00Z, 1.8 hours before the alert went out and 182 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: 3944 J/kg
Mixed-layer CIN: -170 J/kg
Mixed-layer LCL: 854 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -36 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

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

352 
WUUS1 KFAR 281348 RRA
SVRFAR
NDC073-281415-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
847 AM CDT SAT JUN 28 1997
 
THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  915 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST NORTH DAKOTA
 
   ...WESTERN RANSOM COUNTY
 
AT 844 AM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM 5
MILES SOUTWEST OF FORT RANSOM...OR 35 MILES SOUTH OF VALLEY CITY. THIS
STORM WAS DRIFTING SLOWLY TO THE SOUTHEAST. THIS STORM WILL CONTINUE TO
AFFECT THE CITY OF ENGLEVALE AS WELL AS THE FORT RANSOM STATE PARK AREA.
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL AND CONTINUES TO BE
DANGEROUS.  THOSE IN ITS PATH SHOULD SEEK COVER IMMEDIATELY.
 
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
 
STRAGER

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 28, 2:56 AM CDT, 5 hours 51 minutes earlier.

Area forecast discussion, Jun 28, 2:56 AM CDT, 5 hours 51 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
250 AM CDT SAT JUN 28 1997

UNFORTUNATELY...DUE TO SEVERE WEATHER AND FLOODING HAVENT BEEN ABLE
SPEND ALOT OF TIME LOOKING AT DATA. FOR FIRST PERIOD MODELS DEVELOP A
WARM FRONT ACROSS CENTRAL MINNESOTA FROM LOW OVER SD WITH MAIN THREAT
FOR HEAVY RAIN AND SEVERE WX FOCUSED ON THIS REGION FROM QPF AND SWO
PROGS.  HOWEVER AM STILL CONCERNED ABOUT THREAT OF HEAVY RAIN/FLOODING
AND PSBL SVR WX LATER TODAY. WITH TDS FORECAST TO REMAIN IN THE MID TO
UPPER 60S AND RESIDUAL BOUNDARIES FROM OVERNIGHT CONVECTION ANY SFC
HEATING TODAY MAY CAUSE PROBLEMS. NGM LI'S ALSO KEEP MOST OF REGION
QUITE UNSTABLE WITH LI'S FROM -4 TO -8. SUGGEST KEEPING FLASH FLOOD
WATCH IN MOST OF REGION FOR TODAY. ALSO MAY HAVE TO MENTION THE RISK OF
SEVERE FOR SOUTH HALF OF CWFA. MOST ALL OF CWFA EXCEPT FOR MAYBE DVL
AREA HAS A FAIR CHANCE FOR TSRA. WITHOUT HAVING LOOKED AT MUCH MOS
TEMPS SEEM REASONABLE GENERALLY LOWER TO MID 80S FROM NORTH TO SOUTH.
VOELKER

In the hours before

Special weather statement, Jun 28, 6:30 AM CDT, 2 hours 17 minutes before

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052-053-291200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
630 AM CDT SAT JUN 28 1997

..THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS ACROSS EASTERN NORTH
DAKOTA...NORTHWEST AND WEST CENTRAL MINNESOTA STARTING THIS
AFTERNOON...

AN AREA OF LOW PRESSURE...CENTERED IN EASTERN SOUTH DAKOTA...HAS AN
ASSOCIATED WARM FRONT WHICH EXTENDS ACROSS CENTRAL MINNESOTA.  THIS LOW
WILL REMAIN FAIRLY STATIONARY TODAY...PROVIDING PLENTY OF MOISTURE TO
THE REGION AND THE WARM FRONT WILL BE THE FOCUS FOR THUNDERSTORM
DEVELOPMENT. AS A RESULT...THERE IS A SLIGHT RISK FOR SEVERE
THUNDERSTORMS SOUTH OF A NEW ROCKFORD TO GRAND FORKS TO BEMIDJI LINE
TODAY AND TONIGHT. LARGE HAIL AND DAMAGING WINDS ARE THE MAIN SEVERE
WEATHER THREATS.

IN ADDITION...THE POTENTIAL FOR HEAVY RAINFALL CONTINUES THROUGH TODAY
WITH A FLASH FLOOD WATCH IN EFFECT FOR TODAY FOR PORTIONS OF EASTERN
NORTH DAKOTA AND NORTHWESTERN MINNESOTA.  THE FLASH FLOOD WATCH
INCLUDES THE CITIES OF WAHPETON...VALLEY CITY...MAYVILLE...GARND
FORKS...THIEF RIVER FALLS...BEMIDJI AND CROOKSTON.

AN UPDATED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED THIS AFTERNOON IF
CONDITIONS WARRANT.

NG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 9:20 PM CDT	Severe Thunderstorm Warning	FGF	Nelson	25 min
Jun 27, 9:40 PM CDT	Severe Thunderstorm Warning	FGF	Nelson	35 min
Jun 27, 10:05 PM CDT	Tornado Warning	FGF	Nelson	25 min
Jun 27, 10:26 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks	34 min
Jun 27, 10:52 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks	38 min
Jun 27, 11:00 PM CDT	Severe Thunderstorm Warning	FGF	Traill	40 min
Jun 27, 11:20 PM CDT	Severe Thunderstorm Warning	FGF	Nelson	30 min
Jun 27, 11:33 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks	27 min
Jun 27, 11:50 PM CDT	Severe Thunderstorm Warning	FGF	Nelson	25 min
Jun 27, 11:54 PM CDT	Severe Thunderstorm Warning	FGF	Traill	36 min
Jun 28, 12:08 AM CDT	Tornado Warning	FGF	Grand Forks, Steele	32 min
Jun 28, 12:42 AM CDT	Severe Thunderstorm Warning	FGF	Steele	33 min
Jun 28, 1:13 AM CDT	Severe Thunderstorm Warning	FGF	Steele	32 min
Jun 28, 8:18 AM CDT	Severe Thunderstorm Warning	FGF	Ransom	27 min
Jun 28, 9:52 AM CDT	Severe Thunderstorm Warning	FGF	Ransom, Sargent	38 min
Jun 28, 10:29 AM CDT	Severe Thunderstorm Warning	FGF	Richland, Sargent	31 min
Jun 28, 11:02 AM CDT	Severe Thunderstorm Warning	FGF	Richland	28 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.