Alert archive / Minnesota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 89, NWS Grand Forks, ND

July 2, 2003Kittson County, Roseau County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 2, 2003, 1:46 PM CDT for Kittson County, Roseau County, Minnesota. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 2, 2003, 1:46 PM CDT (18:46 UTC)
Expired
Jul 2, 2003, 2:30 PM CDT
In force
44 min
Issued by
NWS Grand Forks, ND
Area
Counties, with a storm outline in the text

Counties Kittson County, MN, Roseau County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 155 km from the middle of the area, began a volume at 18:49 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

IssuedProductOfficeLasted
Jul 2, 11:20 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 6.8 hours before the alert went out and 231 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 12:00Z on 2003-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 774 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 12:00Z on 2003-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 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
774 J/kg
Mixed-layer CIN
-221 J/kg
Mixed-layer LCL
740 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
182 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.8

Open this sounding in Storm Lab

The text

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

568 
WUUS53 KFGF 021846
SVRFGF
MNC069-135-021930-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
144 PM CDT WED JUL 2 2003

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  EASTERN KITTSON COUNTY IN NORTHWEST MINNESOTA AND  
  WESTERN ROSEAU COUNTY IN NORTHWEST MINNESOTA.

* UNTIL 230 PM CDT.

* AT 139 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A     
  SEVERE THUNDERSTORM NEAR LAKE BRONSON....OR ABOUT 40 MILES WEST OF 
  ROSEAU...MOVEMENT WAS TO THE NORTHEAST AT 40 MPH.  WIND GUSTS TO   
  60 MPH ALONG WITH DOWNED TREES AND POWERLINES WERE REPORTED        
  IN THE HALLOCK AREA. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  GREENBUSH AT 200 PM...
  HAUG AT 215 PM AND
  BADGER AT 225 PM.

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

LAT...LON 4882 9682 4859 9647 4869 9582 4899 9619

$$

DTR/06

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 2, 9:30 AM CDT, 4 hours 16 minutes earlier.

Area forecast discussion, Jul 2, 9:30 AM CDT, 4 hours 16 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
930 AM CDT WED JUL 2 2003

...FORECAST CHALLENGE FOR UPDATE CONCERNS CONVECTIVE THREAT.

STRONG CONVECTION WHICH DEVELOPED OVER WESTERN DAKOTAS CONTINUES TO
PROPAGATE EAST/NORTHEAST WITH NORTHERN CLUSTER BECOMING TO TRACK
MORE EAST AS IT CRESTS RIDGE. CONVECTION RIDING ALONG LOW LEVEL
BOUNDARY WITH 70 DEWPOINTS POOLING ALONG BOUNDARY. AM ALSO SEEING
DEVELOPMENT CLOUD TOPS CONTINUE TO COOL FROM IR IMAGERY. MAIN
ADJUSTMENTS TO UPDATE WILL BE TIMING WITH CONVECTION BASED ON
CURRENT TRENDS. TEMPERATURES SEEM IN REASON AS TEMPERATURES ALREADY
APPROACHING 80. CONVECTION MAY HOLD SOME TEMPERATURES DOWN HOWEVER
ANY BREAKS WILL ALLOW AREA TO QUICKLY HEAT OUT.

.FGF...NONE.

VOELKER
Hazardous weather outlook, Jul 2, 6:35 AM CDT, 7 hours 11 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-021415-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
635 AM CDT WED JUL 2 2003

...THE POTENTIAL EXISTS FOR A SIGNIFICANT SEVERE WEATHER OUTBREAK
   ACROSS THE ENTIRE AREA FOR LATE THIS AFTERNOON AND EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN NORTH DAKOTA...WEST
CENTRAL AND NORTHWEST MINNESOTA.

.DAY ONE...TODAY AND TONIGHT
THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS ACROSS THE
REGION TODAY. THE MAIN THREAT FROM THESE STORMS WILL BE DAMAGING
WINDS...LARGE HAIL AND VERY HEAVY RAINS. DUE TO THE EXTREME
INSTABILITY IN PLACE OVER THE REGION ISOLATED TORNADOES AND
SIGNIFICANT STRAIGHT LINE WIND DAMAGE (LARGE BOW ECHO) CANNOT
BE RULED OUT. EXPECT RAPID SEVERE THUNDERSTORM DEVELOPMENT TO
OCCUR ALONG A DEVILS LAKE TO VALLEY CITY LINE BY MID TO LATE
AFTERNOON AND THEN WORK EAST ACROSS THE REMAINDER OF EASTERN
NORTH DAKOTA AND WEST CENTRAL AND NORTHWEST MINNESOTA THIS
EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THUNDERSTORMS ARE POSSIBLE ACROSS WEST CENTRAL MINNESOTA AND NORTHWEST
MINNESOTA THURSDAY MORNING. ADDITIONAL THUNDERSTORM CHANCES LOOM ON
TO CLOSE OUT THE JULY FOURTH WEEKEND ON SATURDAY NIGHT AND SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED LATE THIS AFTERNOON AND EVENING.

BERG

In the hours before

Local storm report, Jul 2, 12:48 PM CDT, 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
1248 PM CDT WED JUL 2 2003

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

1225 PM    8 SW MILTON               ND   WIND DAMAGE
07/02/03   CAVALIER                       LARGE TREES BLOWN DOWN.
                                          REPORTED BY PUBLIC.

DPORTER
Local storm report, Jul 2, 1:13 PM CDT, 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
113 PM CDT WED JUL 2 2003

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

1230 AM    UNION                     ND   WIND DAMAGE
07/02/03   CAVALIER                       35 FOOT PINE TREE DOWN.
                                          BRANCHES EVERYWHERE.
                                          REPORTED BY TRAINED
                                          SPOTTER.

1235 PM    8 WSW CRYSTAL             ND   WIND DAMAGE
07/02/03   PEMBINA                        LARGE TREE BLOWN DOWN
                                          ACROSS DRIVEWAY. REPORTED
                                          BY PUBLIC.

DPORTER
Local storm report, Jul 2, 1:15 PM CDT, 31 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GRAND FORKS, ND
115 PM CDT WED JUL 2 2003

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

1230 PM    UNION                     ND   WIND DAMAGE
07/02/03   CAVALIER                       35 FOOT PINE TREE DOWN.
                                          BRANCHES EVERYWHERE.
                                          REPORTED BY TRAINED
                                          SPOTTER.

1235 PM    8 WSW CRYSTAL             ND   WIND DAMAGE
07/02/03   PEMBINA                        LARGE TREE BLOWN DOWN
                                          ACROSS DRIVEWAY. REPORTED
                                          BY PUBLIC.

DPORTER
Local storm report, Jul 2, 1:21 PM CDT, 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
121 PM CDT WED JUL 2 2003

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

1216 PM    DAHLEN                    ND   WIND DAMAGE
07/02/03   NELSON                         LARGE 4 TO 6 INCH TREE
                                          BRANCHES DOWN. REPORTED BY
                                          TRAINED SPOTTER.

DPORTER
Local storm report, Jul 2, 1:32 PM CDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
132 PM CDT WED JUL 2 2003

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

1255 PM    9 NNW GRAFTON             ND   WIND DAMAGE
07/02/03   WALSH                          SHINGLES BLOWN OFF ROOF.
                                          REPORTED BY TRAINED
                                          SPOTTER.

DPORTER
Local storm report, Jul 2, 1:37 PM CDT, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
137 PM CDT WED JUL 2 2003

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

0110 PM    DONALDSON                 MN   61 MPH WIND GUST
07/02/03   KITTSON                        REPORTED BY RWIS
                                          OBSERVATION.

DPORTER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 1:00 PM CDTSevere Thunderstorm WarningFGFKittson, Marshall, Polk45 min
Jul 2, 1:32 PM CDTSevere Thunderstorm WarningFGFPolk43 min
Jul 2, 2:13 PM CDTSevere Thunderstorm WarningFGFPennington, Polk, Red Lake47 min
Jul 2, 2:22 PM CDTSevere Thunderstorm WarningFGFNorman38 min
Jul 2, 2:29 PM CDTSevere Thunderstorm WarningFGFLake of the Woods, Roseau61 min
Jul 2, 3:16 PM CDTSevere Thunderstorm WarningFGFBeltrami, Clearwater, Hubbard59 min
Jul 2, 3:39 PM CDTSevere Thunderstorm WarningFGFBecker51 min
Jul 2, 4:15 PM CDTSevere Thunderstorm WarningFGFHubbard45 min
Jul 2, 4:57 PM CDTSevere Thunderstorm WarningFGFBecker48 min
Jul 2, 5:44 PM CDTSevere Thunderstorm WarningFGFBecker, Hubbard61 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2003Every severe thunderstorm warning in 2003

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.