Alert archive / North Dakota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 39, NWS Grand Forks, ND

June 21, 2003Grand Forks County, Traill County, North Dakota; Polk County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 21, 2003, 9:37 PM CDT for Grand Forks County, Traill County, North Dakota; Polk County, Minnesota. It was in force for 23 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
Jun 21, 2003, 9:37 PM CDT (02:37 UTC)
Expired
Jun 21, 2003, 10:00 PM CDT
In force
23 min
Issued by
NWS Grand Forks, ND
Area
Counties, with a storm outline in the text

Counties Polk County, MN, Grand Forks County, ND, Traill County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 42 km from the middle of the area, began a volume at 02:37 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 21, 6:50 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 2.6 hours before the alert went out and 283 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 2003-06-22Temperature 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, International Fa, MN at 00:00Z on 2003-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 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
1935 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
129 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.

340 
WUUS53 KFGF 220237
SVRFGF
MNC119-NDC035-097-220300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
936 PM CDT SAT JUN 21 2003

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  SOUTHEASTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA...
  WESTERN POLK COUNTY IN NORTHWEST MINNESOTA AND
  NORTHEASTERN TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA.

* UNTIL 1000 PM CDT.

* AT 932 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 2 MILES SOUTHEAST OF THOMPSON...OR ABOUT 12
  MILES SOUTH OF GRAND FORKS...MOVEMENT WAS TO THE EAST AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  BYGLAND AT 940 PM...
  FISHER AT 945 PM...
  KEY WEST AT 950 PM AND
  CROOKSTON AT 955 PM.

DAMAGING WINDS...LARGE HAIL...DEADLY LIGHTNING AND TORNADOES ARE ALL
POSSIBLE IN SEVERE THUNDERSTORMS. SEEK SHELTER IN A REINFORCED
BUILDING IMMEDIATELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM SUNDAY
MORNING FOR NORTHWESTERN MINNESOTA AND EASTERN NORTH DAKOTA.

LAT...LON 4793 9727 4752 9717 4754 9642 4805 9653

$$

HOPPES

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:16 PM CDTSevere Thunderstorm WarningFGFEddy44 min
Jun 21, 7:24 PM CDTSevere Thunderstorm WarningFGFBenson, Ramsey51 min
Jun 21, 7:26 PM CDTSevere Thunderstorm WarningFGFNelson49 min
Jun 21, 8:01 PM CDTSevere Thunderstorm WarningFGFGriggs, Steele44 min
Jun 21, 8:11 PM CDTSevere Thunderstorm WarningFGFBarnes49 min
Jun 21, 8:18 PM CDTSevere Thunderstorm WarningFGFRamsey, Walsh42 min
Jun 21, 8:21 PM CDTSevere Thunderstorm WarningFGFNelson24 min
Jun 21, 8:26 PM CDTTornado WarningFGFRamsey, Walsh49 min
Jun 21, 8:41 PM CDTTornado WarningFGFNelson34 min
Jun 21, 8:56 PM CDTSevere Thunderstorm WarningFGFCass64 min
Jun 21, 9:10 PM CDTSevere Thunderstorm WarningFGFRansom, Richland, Sargent65 min
Jun 22, 3:53 PM CDTSevere Thunderstorm WarningFGFCass, Ransom, Richland37 min
Jun 22, 6:03 PM CDTFlash Flood WarningFGFCass, Richland12 hr
Jun 21, 9:54 PM CDTSevere Thunderstorm WarningFGFClay, Norman51 min
Jun 21, 10:01 PM CDTSevere Thunderstorm WarningFGFPolk, Red Lake44 min
Jun 21, 10:20 PM CDTSevere Thunderstorm WarningFGFPennington40 min
Jun 21, 10:46 PM CDTSevere Thunderstorm WarningFGFPolk44 min
Jun 21, 10:49 PM CDTSevere Thunderstorm WarningFGFMahnomen41 min
Jun 22, 5:48 PM CDTSevere Thunderstorm WarningFGFGrant42 min
Jun 22, 6:24 PM CDTSevere Thunderstorm WarningFGFClearwater36 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2003Severe 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.