Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 107, NWS Grand Forks, ND

June 28, 1997Wadena County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 28, 1997, 1:10 PM CDT for Wadena County, Minnesota. It was in force for 35 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, 1:10 PM CDT (18:10 UTC)
Expired
Jun 28, 1997, 1:45 PM CDT
In force
35 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Wadena County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 207 km from the middle of the area, began a volume at 18:14 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 28, 9:00 AM CDTSevere Thunderstorm WatchSPC6 hr
Jun 28, 12:30 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 6.2 hours before the alert went out and 220 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, Minneapolis, MN at 12:00Z on 1997-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1849 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, Minneapolis, MN at 12:00Z on 1997-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 square meters per square second.1939Sfc1 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
1849 J/kg
Mixed-layer CIN
-111 J/kg
Mixed-layer LCL
891 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
197 m²/s²
Significant tornado parameter
0.0
Supercell composite
9.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFAR 281810 RRA
SVRFAR
MNC159-281845-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
110 PM CDT SAT JUN 28 1997
 
THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  145 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL MINNESOTA
 
   ...WADENA COUNTY
 
AT 110 PM CDT RADAR INDICATED A SEVERE THUNDERSTOM JUST NORTH OF WADENA
...OR 40 SOUTHEAST OF DETROIT LAKES. THE STORM WAS MOVING EAST AT 20
MPH. THE TOWNS OF WADENA...BLUEGRASS AND OYLEN WILL BE AFFECTED BY THIS
STORM.
 
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
 
KENNEDY

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, 10:08 AM CDT, 3 hours 2 minutes earlier.

Area forecast discussion, Jun 28, 10:08 AM CDT, 3 hours 2 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1007 AM CDT SAT JUN 28 1997

SVR WX KEEPING US HOPPING...NO TIME TO GET INTO DATA.  CURRENT SVR TSTM
WATCH BOX STILL LOOKING GOOD AS SVRL AREAS OF TSTMS DVLPG.  WATCH BOX
AREA STILL HAS GOOD POOLING OF DWPTS ALG WITH SVRL BOUNDARIES FROM PRVS
CONVECTION...SHOULD KEEP US BUSY FOR NXT SVRL HOURS.  OTHER CONCERN IS
FLASH FLOOD WATCH AREA.  WE EXTENDED WATCH TO COVER W CNTRL MN WHERE
CONVECTION IS PRESENTLY FIRING AND WHERE 3 HR FFG SHOWS 2 INCHES OR
LESS.  ZONES LOOK GOOD FOR NOW...NO BIG CHANGES PLANNED.

STRAGER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 7:04 PM CDTSevere Thunderstorm WarningFGFMarshall41 min
Jun 27, 7:27 PM CDTSevere Thunderstorm WarningFGFRoseau33 min
Jun 27, 7:32 PM CDTSevere Thunderstorm WarningFGFLake of the Woods28 min
Jun 27, 7:43 PM CDTSevere Thunderstorm WarningFGFMarshall47 min
Jun 27, 8:03 PM CDTSevere Thunderstorm WarningFGFBeltrami42 min
Jun 27, 8:49 PM CDTSevere Thunderstorm WarningFGFBeltrami26 min
Jun 27, 9:31 PM CDTSevere Thunderstorm WarningFGFBeltrami44 min
Jun 27, 10:11 PM CDTSevere Thunderstorm WarningFGFBeltrami49 min
Jun 27, 10:32 PM CDTSevere Thunderstorm WarningFGFMarshall28 min
Jun 27, 10:49 PM CDTSevere Thunderstorm WarningFGFClearwater26 min
Jun 27, 10:58 PM CDTSevere Thunderstorm WarningFGFBeltrami47 min
Jun 27, 11:15 PM CDTSevere Thunderstorm WarningFGFClearwater, Polk30 min
Jun 27, 11:48 PM CDTSevere Thunderstorm WarningFGFClearwater27 min
Jun 27, 11:54 PM CDTSevere Thunderstorm WarningFGFNorman36 min
Jun 28, 12:13 AM CDTSevere Thunderstorm WarningFGFClearwater, Mahnomen, Polk32 min
Jun 28, 12:32 AM CDTSevere Thunderstorm WarningFGFBeltrami, Hubbard28 min
Jun 28, 12:36 AM CDTSevere Thunderstorm WarningFGFNorman39 min
Jun 28, 12:44 AM CDTSevere Thunderstorm WarningFGFClearwater, Mahnomen, Polk31 min
Jun 28, 1:11 AM CDTFlash Flood WarningFGFClearwater, Mahnomen, Polk3 hr
Jun 28, 1:14 AM CDTSevere Thunderstorm WarningFGFClearwater, Mahnomen31 min
Jun 28, 1:29 AM CDTSevere Thunderstorm WarningFGFHubbard31 min
Jun 28, 1:45 AM CDTSevere Thunderstorm WarningFGFBecker30 min
Jun 28, 1:47 AM CDTSevere Thunderstorm WarningFGFNorman28 min
Jun 28, 2:13 AM CDTSevere Thunderstorm WarningFGFNorman32 min
Jun 28, 2:40 AM CDTSevere Thunderstorm WarningFGFMahnomen35 min
Jun 28, 2:54 AM CDTSevere Thunderstorm WarningFGFBecker36 min
Jun 28, 3:29 AM CDTSevere Thunderstorm WarningFGFBecker31 min
Jun 28, 9:16 AM CDTSevere Thunderstorm WarningFGFOtter Tail29 min
Jun 28, 9:31 AM CDTSevere Thunderstorm WarningFGFWilkin44 min
Jun 28, 9:47 AM CDTSevere Thunderstorm WarningFGFOtter Tail28 min
Jun 28, 10:12 AM CDTSevere Thunderstorm WarningFGFWilkin48 min
Jun 28, 10:21 AM CDTSevere Thunderstorm WarningFGFOtter Tail54 min
Jun 28, 11:00 AM CDTFlash Flood WarningFGFOtter Tail4 hr
Jun 28, 11:27 AM CDTSevere Thunderstorm WarningFGFWilkin33 min
Jun 28, 12:21 PM CDTFlash Flood WarningFGFWilkin2 hr
Jun 28, 1:03 PM CDTSevere Thunderstorm WarningFGFOtter Tail27 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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; radar from the NEXRAD Level II archive.