Alert archive / North Dakota / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 59, NWS Grand Forks, ND

June 6, 2004Towner County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 6, 2004, 11:22 PM CDT for Towner County, North Dakota. It was in force for 38 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 6, 2004, 11:22 PM CDT (04:22 UTC)
Expired
Jun 7, 2004, 12:00 AM CDT
In force
38 min
Issued by
NWS Grand Forks, ND
Area
Counties, with a storm outline in the text

County Towner County, ND

What was reported inside it

TimeReportWhereRemark
Jun 6, 11:45 PM CDTHAIL 14 Se Rocklake, ND

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 23 minutes after it went out.

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
Jun 6, 8:50 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 4.4 hours before the alert went out and 251 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 00:00Z on 2004-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1945 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, Bismarck Municip, ND at 00:00Z on 2004-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 129 square meters per square second.19395878Sfc1 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
1945 J/kg
Mixed-layer CIN
-123 J/kg
Mixed-layer LCL
1573 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
129 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
0.6
Supercell composite
9.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFGF 070422
SVRFGF
NDC095-070500-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
1122 PM CDT SUN JUN 6 2004

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  NORTHERN TOWNER COUNTY IN NORTHEAST NORTH DAKOTA

* UNTIL MIDNIGHT CDT.

* AT 1118 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES WEST OF PERTH...OR ABOUT 52 MILES
  NORTHWEST OF DEVILS LAKE...MOVING TO THE NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  PERTH AT 1125 PM...
  ARNDT AT 1135 PM...
  AMOURDALE AT 1140 PM AND
  ROCKLAKE AT 1145 PM.

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

LAT...LON 4897 9952 4859 9947 4859 9902 4899 9903

$$

55

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.

Hazardous weather outlook, Jun 6, 6:34 AM CDT, 16 hours 48 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
634 AM CDT SUN JUN 6 2004

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-061433-
BARNES-BENSON-CASS-CAVALIER-CLAY-EAST BECKER-EAST MARSHALL-
EAST OTTER TAIL-EAST POLK-EASTERN WALSH COUNTY-EDDY-GRAND FORKS-
GRANT-GRIGGS-HUBBARD-KITTSON-LAKE OF THE WOODS-MAHNOMEN-NELSON-
NORMAN-NORTH BELTRAMI-NORTH CLEARWATER-PEMBINA-PENNINGTON-RAMSEY-
RANSOM-RED LAKE-RICHLAND-ROSEAU-SARGENT-SOUTH BELTRAMI-
SOUTH CLEARWATER-STEELE-TOWNER-TRAILL-WADENA-WEST BECKER-
WEST MARSHALL-WEST OTTER TAIL-WEST POLK-WESTERN WALSH COUNTY-WILKIN-
634 AM CDT SUN JUN 6 2004

...A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF EASTERN NORTH
DAKOTA AND NORTHWEST MINNESOTA OVERNIGHT...

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

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PORTIONS OF
EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA DURING THE LATE EVENING
AND OVERNIGHT HOURS. LARGE HAIL AND DAMAGING WINDS ARE THE MAIN
THREAT. STRONG THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER WESTERN
NORTH DAKOTA LATE THIS AFTERNOON AND SHIFT EAST REACHING THE
DEVILS LAKE BASIN DURING THE MID TO LATE EVENING HOURS...THEN ACROSS
THE RED RIVER VALLEY INTO NORTHWEST MINNESOTA AFTER MIDNIGHT. THE
FAVORED AREA FOR SEVERE THUNDERSTORMS WILL BE ALONG AND NORTH OF A
LINE FROM COOPERSTOWN TO MAYVILLE AND BEMIDJI. IN ADDITION LOCALLY
HEAVY RAINFALL IS ALSO POSSIBLE...ESPECIALLY FROM THE NORTHERN RED
RIVER VALLEY INTO NORTHWEST MINNESOTA.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

STRONG THUNDERSTORMS ARE POSSIBLE ACROSS NORTHERN MINNESOTA MONDAY
MORNING BEFORE SHIFTING NORTHEAST IN SOUTHERN CANADA.  THUNDERSTORMS
MAY REDEVELOP MONDAY AFTERNOON ALONG AND EAST OF A LINE FROM ROSEAU
TO DETROIT LAKES AND ELBOW LAKE BEFORE SHIFTING EAST EARLY IN THE
EVENING.  THE NEXT CHANCE FOR STRONG THUNDERSTORMS WILL BE THURSDAY
AND THURSDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED FROM THIS EVENING INTO MONDAY
MORNING.

VOELKER

In the hours before

Local storm report, Jun 6, 10:52 PM CDT, 30 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
1052 PM CDT SUN JUN 06 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

1045 PM     HAIL             5 N NEW ROCKFORD        47.75N 99.14W
06/06/2004  0.88 INCH        EDDY               ND   TRAINED SPOTTER

&&

WJB
Local storm report, Jun 6, 11:00 PM CDT, 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
1100 PM CDT SUN JUN 06 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

1052 PM     HAIL             2 S SHEYENNE            47.80N 99.12W
06/06/2004  2.50 INCH        EDDY               ND   EMERGENCY MNGR

&&

WJB

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 10:08 PM CDTSevere Thunderstorm WarningFGFBenson52 min
Jun 6, 10:43 PM CDTSevere Thunderstorm WarningFGFEddy47 min
Jun 6, 11:30 PM CDTSevere Thunderstorm WarningFGFNelson45 min
Jun 7, 1:00 AM CDTSevere Thunderstorm WarningFGFNelson, Ramsey45 min
Jun 7, 1:10 AM CDTSevere Thunderstorm WarningFGFGrand Forks50 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2004Every severe thunderstorm warning in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.