Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 111, NWS Grand Forks, ND

July 1, 1997Cass County, Traill County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 1, 1997, 2:30 PM CDT for Cass County, Traill County, North Dakota. It was in force for 30 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
Jul 1, 1997, 2:30 PM CDT (19:30 UTC)
Expired
Jul 1, 1997, 3:00 PM CDT
In force
30 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

Counties Cass County, ND, Traill County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 38 km from the middle of the area, began a volume at 19:32 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

TimeReportWhereRemark
Jul 1, 2:45 PM CDTThunderstorm WindCasselton, NDPower lines were blown down.
Jul 1, 3:00 PM CDTThunderstorm WindProsper, 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

Bismarck Municip, ND (KBIS), launched 12:00Z, 7.5 hours before the alert went out and 269 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 12:00Z on 1997-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1997-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1775 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
352 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFAR 011929 RRA
SVRFAR
NDC017-097-012000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
230 PM CDT TUE JUL 1 1997
 
THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  300 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST NORTH DAKOTA
 
   ...EASTERN CASS COUNTY...SOUTHERN TRAILL COUNTY
 
AT 225 PM CDT RADAR INDICATED A LINE OF SEVERE THUDNERSTORMS FROM NEAR
BLANCHARD TO MAPLETON ...OR 40 MILES NORTHWEST OF FARGO TO 15 MILES WEST
OF FARGO. TOWNS IN THE PATH OF THESE STORMS ARE FARGO...ARGUSVILLE
...HILLSBORO AND GRANDIN. THE STROMS WERE MOVING NORTHEAST AT 20 MPH.
 
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 Jul 1, 2:15 PM CDT, 15 minutes earlier.

Area forecast discussion, Jul 1, 2:15 PM CDT, 15 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
215 PM CDT TUE JUL 1 1997

WL KEEP SHORT WITH CONVECTION FIRING ACRS AREA.  FRONTAL BOUNDARY /THE
ONE I EARLIER SAID WD REMAIN STATIONARY/ NOW SLOWLY MOVING NORTH WITH
STG STHRLY FLOW AHEAD OF LOW. FRONT NOW XTNDS ROUGHLY FM JMS...TO
GFK...TO ROX...WITH GFK DWPT SHOOTING UP FM 59 TO 65 IN ONE HOUR.  KMVX
88D NOW SHOWING SOME STG CONVECTION FIRING UP OVER SOUTHEAST ND...JUST
ALONG AND S OF THIS FNT. MODELS IN FAIRLY GOOD AGREEMENT WITH
LOCATION/SPEED OF SYSTEM...BRINGING SFC LOW IN GENERAL VCNTY OF FSE/DTL
BY 12Z. GIVEN TRACK OF SYSTEM...STILL THINK HVY PCPN LIKELY ACRS CWA
WITH NRN HALF OF CWA RECEIVING MAJORITY OF PCPN FROM OVERRUNNING AND SRN
HALF OF CWA RCVG MORE FM STG CONVECTION. REGARDLESS OF HOW PCPN
FALLS...STILL EXPCT HIGH PCPN AMTS SO WL KEEP FLASH FLOOD WATCH IN
PLACE THRU TONIGHT ACRS ENTR CWA.

SUGGESTIONS FOR ND...KEEP FLASH FLOOD WATCH FOR ALL ND CWA.
  FOR DVL...WD INCLUDE PEMBINA AND WALSH IN THIS GROUP...FEEL NO MENTION
OF SVR NEEDED.  WINDY WITH SHOWERS AND TSTMS.  VERY HEAVY RAIN AND
FLOODING PSBL.  GUSTY NORTHEAST WIND 15-30.  LOW MID-UPR 50S.
  FOR GFK...WINDY WITH SHOWERS AND THUNDERSTORMS...SOME MAY BE SEVERE
THIS EVENING.  VERY HEAVY RAIN AND FLOODING PSBL.  NORTHEAST WIND
INCREASING TO 15 TO 30 MPH.  LOW UPPR 50S-LOW 60S.
  FOR FAR...SAME AS GFK EXCPT WND BCMG NORTHEAST AND INCRG TO 15-30 MPH.
LOW 60-65.

SUGGESTIONS FOR MN...KEEP FLASH FLOOD WATCH FOR ALL MN CWA.
  BREAK OFF NRN PTN OF KITTSON...ROSEAU...L.O.W...MARSHALL.  SHOWERS
AND TSTMS /NO SVR MENTION/.  VERY HEAVY RAIN POSSIBLE.  WIND NORTHEAST
10 TO 20.  LOWS 55-60.
  FOR RMDR...SHOWERS AND THUNDERSTORMS...SOME TSTMS PSBLY SEVERE THIS
EVENING.  WIND EAST-SE 10-20...LOWS 60-65.

STRAGER

In the hours before

Local storm report, Jul 1, 9:20 AM CDT, 5 hours 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
920 AM CDT TUE JUL 01 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0225 AM    MCLEOD                    ND   1.00 INCH HAIL
07/01/97   RANSOM

0255 AM    2 S KINDRED               ND   0.75 INCH HAIL
07/01/97   RICHLAND

 BELLES
Local storm report, Jul 1, 9:21 AM CDT, 5 hours 9 minutes before
PRELIMINARY LOCAL STORM REPORT...DELAYED REPORTS
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
925 AM CDT TUE JUL 01 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0612 PM    12S ROSEAU                MN   TORNADO
06/27/97   ROSEAU

0830 PM    11 NE GRYGLA              MN   WIND DAMAGE
06/27/97   BELTRAMI                       LARGE TREES DOWN.

0905 PM    7 SW WASKISH              MN   WIND DAMAGE
06/27/97   BELTRAMI                       NUMEROUS LARGE TREES DOWN.

0930 PM    30 N PARK RAPIDS          MN   0.75 INCH HAIL
06/27/97   HUBBARD

1010 PM    ANETA                     ND   1.00 INCH HAIL
06/27/97   NELSON

1015 PM    GONVICK                   MN   1.00 INCH HAIL
06/27/97   CLEARWATER

1030 PM    5 N BAGLEY                MN   0.75 INCH HAIL
06/27/97   CLEARWATER

1045 PM    10 N GULLY                MN   0.75 INCH HAIL
06/27/97   PENNINGTON

1123 PM    3 N GULLY                 MN   0.75 INCH HAIL
06/27/97   POLK

1220 AM    1 S BUXTON                ND   0.75 INCH HAIL
06/28/97   TRAILL

1245 AM    1 W BEMIDJI               MN   WIND DAMAGE
06/28/97   BELTRAMI                       LARGE TREES DOWN.

1245 AM    1 1/2 S NAYTAHWAUSH       MN   1.75 INCH HAIL
06/28/97   MAHNOMEN

0110 AM    1 S NAYTAHWAUSH           MN   1.25 INCH HAIL
06/28/97   MAHNOMEN

0130 AM    1 S NAYTAHWAUSH           MN   1.25 INCH HAIL
6/28/97    MAHNOMEN

0130 AM    3 E SHARON                ND   1.75 INCH HAIL
06/28/87   STEELE

0135 AM    13S BEMIDJI               MN   WIND DAMAGE
06/28/97   HUBBARD                        **2 INJ**
                                          AUTOMOBILE FLIPPED OVER.

0200 AM    33 N PARK RAPIDS          MN   WIND DAMAGE
06/28/97   HUBBARD                        FISH HOUSE BLOWN OVER.

0230 AM    6 NE BEAULIEU             MN   0.75 INCH HAIL
06/28/97   MAHNOMEN

0245 AM    ISLAND LAKE               MN   0.75 INCH HAIL
06/28/97   MAHNOMEN

0300 AM    6 NE BEAULIEU             MN   FLOODING
06/28/97   MAHNOMEN                       4.10 INCHES OF RAIN CAUSED
                                          FLOODED ROADS.

0330 AM    LANGBY                    MN   FLOODING
06/28/97   POLK

0330 AM    EBRO                      MN   FLOODING
06/28/97   CLEARWATER                     HWY 2 CLOSED.

0835 AM    6 S FORT RANSOM           ND   TORNADO
06/28/97   RANSOM

0900 AM    4S DETROIT LAKES          MN   0.75 INCH HAIL
06/28/97   BECKER

1030 AM    MILNER                    ND   0.75 INCH HAIL
06/28/97   SARGENT

1125 AM    5 SE HANKINSON            ND   TORNADO
06/28/97   RICHLAND

 BELLES
Local storm report, Jul 1, 9:25 AM CDT, 5 hours 5 minutes before
PRELIMINARY LOCAL STORM REPORT...DELAYED REPORTS
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
925 AM CDT TUE JUL 01 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0612 PM    12S ROSEAU                MN   TORNADO
06/27/97   ROSEAU

0830 PM    11 NE GRYGLA              MN   WIND DAMAGE
06/27/97   BELTRAMI                       LARGE TREES DOWN.

0905 PM    7 SW WASKISH              MN   WIND DAMAGE
06/27/97   BELTRAMI                       NUMEROUS LARGE TREES DOWN.

0930 PM    30 N PARK RAPIDS          MN   0.75 INCH HAIL
06/27/97   HUBBARD

1010 PM    ANETA                     ND   1.00 INCH HAIL
06/27/97   NELSON

1015 PM    GONVICK                   MN   1.00 INCH HAIL
06/27/97   CLEARWATER

1055 PM    5 N BAGLEY                MN   0.75 INCH HAIL
06/27/97   CLEARWATER

1045 PM    10 N GULLY                MN   0.75 INCH HAIL
06/27/97   PENNINGTON

1123 PM    3 N GULLY                 MN   0.75 INCH HAIL
06/27/97   POLK

1220 AM    1 S BUXTON                ND   0.75 INCH HAIL
06/28/97   TRAILL

1245 AM    1 W BEMIDJI               MN   WIND DAMAGE
06/28/97   BELTRAMI                       LARGE TREES DOWN.

1245 AM    1 1/2 S NAYTAHWAUSH       MN   1.75 INCH HAIL
06/28/97   MAHNOMEN

0110 AM    1 S NAYTAHWAUSH           MN   1.25 INCH HAIL
06/28/97   MAHNOMEN

0130 AM    1 S NAYTAHWAUSH           MN   1.25 INCH HAIL
6/28/97    MAHNOMEN

0130 AM    3 E SHARON                ND   1.75 INCH HAIL
06/28/87   STEELE

0135 AM    13S BEMIDJI               MN   WIND DAMAGE
06/28/97   HUBBARD                        **2 INJ**
                                          AUTOMOBILE FLIPPED OVER.

0200 AM    33 N PARK RAPIDS          MN   WIND DAMAGE
06/28/97   HUBBARD                        FISH HOUSE BLOWN OVER.

0230 AM    6 NE BEAULIEU             MN   0.75 INCH HAIL
06/28/97   MAHNOMEN

0245 AM    ISLAND LAKE               MN   0.75 INCH HAIL
06/28/97   MAHNOMEN

0300 AM    6 NE BEAULIEU             MN   FLOODING
06/28/97   MAHNOMEN                       4.10 INCHES OF RAIN CAUSED
                                          FLOODED ROADS.

0330 AM    LANGBY                    MN   FLOODING
06/28/97   POLK

0330 AM    EBRO                      MN   FLOODING
06/28/97   CLEARWATER                     HWY 2 CLOSED.

0835 AM    6 S FORT RANSOM           ND   TORNADO
06/28/97   RANSOM

0900 AM    4S DETROIT LAKES          MN   0.75 INCH HAIL
06/28/97   BECKER

1030 AM    MILNER                    ND   0.75 INCH HAIL
06/28/97   SARGENT

1125 AM    5 SE HANKINSON            ND   TORNADO
06/28/97   RICHLAND

 BELLES
Local storm report, Jul 1, 11:00 AM CDT, 3 hours 30 minutes before
PRELIMINARY LOCAL STORM REPORT...DELAYED REPORTS
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
925 AM CDT TUE JUL 01 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0612 PM    12S ROSEAU                MN   TORNADO
06/27/97   ROSEAU

0830 PM    11 NE GRYGLA              MN   WIND DAMAGE
06/27/97   BELTRAMI                       LARGE TREES DOWN.

0905 PM    7 SW WASKISH              MN   WIND DAMAGE
06/27/97   BELTRAMI                       NUMEROUS LARGE TREES DOWN.

0930 PM    30 N PARK RAPIDS          MN   0.75 INCH HAIL
06/27/97   HUBBARD

1010 PM    ANETA                     ND   1.00 INCH HAIL
06/27/97   NELSON

1015 PM    GONVICK                   MN   1.00 INCH HAIL
06/27/97   CLEARWATER

1055 PM    5 N BAGLEY                MN   0.75 INCH HAIL
06/27/97   CLEARWATER

1045 PM    10 N GULLY                MN   0.75 INCH HAIL
06/27/97   PENNINGTON

1123 PM    3 N GULLY                 MN   0.75 INCH HAIL
06/27/97   POLK

1220 AM    1 S BUXTON                ND   0.75 INCH HAIL
06/28/97   TRAILL

1245 AM    1 W BEMIDJI               MN   WIND DAMAGE
06/28/97   BELTRAMI                       LARGE TREES DOWN.

1245 AM    1 1/2 S NAYTAHWAUSH       MN   1.75 INCH HAIL
06/28/97   MAHNOMEN

0110 AM    1 S NAYTAHWAUSH           MN   1.25 INCH HAIL
06/28/97   MAHNOMEN

0130 AM    1 S NAYTAHWAUSH           MN   1.25 INCH HAIL
6/28/97    MAHNOMEN

0130 AM    3 E SHARON                ND   1.75 INCH HAIL
06/28/87   STEELE

0135 AM    13S BEMIDJI               MN   WIND DAMAGE
06/28/97   HUBBARD                        **2 INJ**
                                          AUTOMOBILE FLIPPED OVER.

0200 AM    33 N PARK RAPIDS          MN   WIND DAMAGE
06/28/97   HUBBARD                        FISH HOUSE BLOWN OVER.

0230 AM    6 NE BEAULIEU             MN   0.75 INCH HAIL
06/28/97   MAHNOMEN

0245 AM    ISLAND LAKE               MN   0.75 INCH HAIL
06/28/97   MAHNOMEN

0300 AM    6 NE BEAULIEU             MN   FLOODING
06/28/97   MAHNOMEN                       4.10 INCHES OF RAIN CAUSED
                                          FLOODED ROADS.

0330 AM    LANGBY                    MN   FLOODING
06/28/97   POLK

0330 AM    EBRO                      MN   FLOODING
06/28/97   CLEARWATER                     HWY 2 CLOSED.

0835 AM    6 S FORT RANSOM           ND   TORNADO
06/28/97   RANSOM

0900 AM    4S DETROIT LAKES          MN   0.75 INCH HAIL
06/28/97   BECKER

1030 AM    MILNER                    ND   0.75 INCH HAIL
06/28/97   SARGENT

1125 AM    5 SE HANKINSON            ND   TORNADO
06/28/97   RICHLAND

 BELLES
Local storm report, Jul 1, 11:48 AM CDT, 2 hours 42 minutes before
PRELIMINARY LOCAL STORM REPORT...DELAYED REPORTS
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1150 AM CDT TUE JUL 01 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0850 PM    VERGAS                    MN   1.00 INCH HAIL
06/28/97   OTTER TAIL

0930 PM    VERGAS                    MN   1.00 INCH HAIL
06/28/97   OTTER TAIL

 BELLES
Local storm report, Jul 1, 11:50 AM CDT, 2 hours 40 minutes before
PRELIMINARY LOCAL STORM REPORT...DELAYED REPORTS
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1150 AM CDT TUE JUL 01 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0850 PM    VERGAS                    MN   1.00 INCH HAIL
06/28/97   OTTER TAIL

0930 PM    VERGAS                    MN   1.00 INCH HAIL
06/28/97   OTTER TAIL

 BELLES

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 2:30 AM CDTSevere Thunderstorm WarningFGFRichland30 min
Jul 1, 3:03 AM CDTSevere Thunderstorm WarningFGFCass27 min
Jul 1, 3:40 PM CDTFlash Flood WarningFGFGrand Forks2 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.