Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 68, NWS Grand Forks, ND

June 27, 1997Beltrami County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 27, 1997, 10:11 PM CDT for Beltrami County, Minnesota. It was in force for 49 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 27, 1997, 10:11 PM CDT (03:11 UTC)
Expired
Jun 27, 1997, 11:00 PM CDT
In force
49 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Beltrami County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 185 km from the middle of the area, began a volume at 03:12 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 27, 8:30 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 3.2 hours before the alert went out and 138 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, International Fa, MN at 00:00Z on 1997-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2313 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, International Fa, MN at 00:00Z on 1997-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 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
2313 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
1650 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.5
Supercell composite
8.2

Open this sounding in Storm Lab

The text

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

473 
WUUS1 KFAR 280313 RRA
SVRFAR
MNC007-280345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1011 PM CDT FRI JUN 27 1997
 
THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL MINNESOTA
 
   ...BELTRAMI COUNTY
 
AT 1015 PM CDT...DOPPLER WEATHER RADAR INDICATED A SEVERE THUNDERSTORM
25 MILES NORTH OF BEMIDJI MOVING EAST AT 20 MPH. TOWNS IN THE PATH OF
THIS THUNDERSTORM INCLUDE TENSTRIKE AND NEBISH.
 
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
 
RA

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 27, 8:53 PM CDT, 1 hour 18 minutes earlier.

Area forecast discussion, Jun 27, 8:53 PM CDT, 1 hour 18 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
850 PM CDT FRI JUN 27 1997

HAVE NOT HAD ALOT OF TIME TO LOOK AT ANY RAPID UPDATE MODELS WITH
SEVERE WX. SFC FRONT FROM NW TIP OF MN TO BETWEEN BIS AND JMS SHOWING
VERY SLOW EASTWARD MOVEMENT AND PROGS KEEP BOUNDARY NEARLY STATIONARY
OVERNIGHT. AIRMASS AHEAD OF FRONT VERY UNSTABLE WITH ADAP LI'S TO -10
AND SFC TD'S AOB 70. 00Z INL SOUNDING HAD A B+ AROUND 3000 J/KG. ALSO
INL SOUNDING HAD K INDEX OF 34...PWAT 1.36 ALONG WITH GOOD THICKNESS
DIFLUENCE OVER MN. ALSO RESPECTABLE MOIST CONVERGENC JUST EAST OF
BOUNDARY. WILL KEEP FLASH FLOOD WATCH GOING ALONG WITH CHC OF TSRA. ONLY
Q4UESTIONABLE AREA IS IN DVL WHICH IS BEHIND FRONT. WILL SPLIT OFF AREA
AND DROP CHC OF TSRA. TEMPS SEEM IN THE BALL PARK...WILL TAKE A LAST
LOOK AT UPDATE TIME. WILL PROBABLY HOLD OFF ON UPDATE TILL FIRST WATCH
AREA EXPIRES.
VOELKER

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, 10:32 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
Jun 28, 1:10 PM CDTSevere Thunderstorm WarningFGFWadena35 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.