Alert archive / North Dakota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 33, NWS Grand Forks, ND

June 21, 2003Griggs County, Steele County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 21, 2003, 8:01 PM CDT for Griggs County, Steele County, North Dakota. 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: Jun 21, 2003, 8:01 PM CDT (01:01 UTC)
Expired: Jun 21, 2003, 8:45 PM CDT
In force: 44 min
Issued by: NWS Grand Forks, ND
Area: Counties, with a storm outline in the text

Counties Griggs County, ND, Steele County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 67 km from the middle of the area, began a volume at 01:00 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.

Issued	Product	Office	Lasted
Jun 21, 2:45 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 21, 6:50 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.0 hours before the alert went out and 204 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 527 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 1228 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

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

786 
WUUS53 KFGF 220101
SVRFGF
NDC039-091-220145-

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

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  CENTRAL GRIGGS COUNTY IN SOUTHEAST NORTH DAKOTA AND
  CENTRAL STEELE COUNTY IN SOUTHEAST NORTH DAKOTA.

* UNTIL 845 PM CDT.

* AT 755 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES NORTHWEST OF SUTTON...OR ABOUT 42 MILES
  NORTHWEST OF VALLEY CITY...MOVEMENT WAS TO THE EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  REVERE AT 805 PM...
  JESSIE AT 810 PM...
  COOPERSTOWN AT 815 PM AND
  FINLEY AT 830 PM.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM SATURDAY
EVENING FOR NORTHWEST MINNESOTA AND EASTERN NORTH DAKOTA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 200 AM SUNDAY MORNING
FOR NORTHWESTERN MINNESOTA AND EASTERN NORTH DAKOTA.

LAT...LON 4757 9854 4734 9854 4728 9772 4764 9773

$$
HOPPES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 7:16 PM CDT	Severe Thunderstorm Warning	FGF	Eddy	44 min
Jun 21, 7:24 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Ramsey	51 min
Jun 21, 7:26 PM CDT	Severe Thunderstorm Warning	FGF	Nelson	49 min
Jun 21, 8:11 PM CDT	Severe Thunderstorm Warning	FGF	Barnes	49 min
Jun 21, 8:18 PM CDT	Severe Thunderstorm Warning	FGF	Ramsey, Walsh	42 min
Jun 21, 8:21 PM CDT	Severe Thunderstorm Warning	FGF	Nelson	24 min
Jun 21, 8:26 PM CDT	Tornado Warning	FGF	Ramsey, Walsh	49 min
Jun 21, 8:41 PM CDT	Tornado Warning	FGF	Nelson	34 min
Jun 21, 8:56 PM CDT	Severe Thunderstorm Warning	FGF	Cass	64 min
Jun 21, 9:10 PM CDT	Severe Thunderstorm Warning	FGF	Ransom, Richland, Sargent	65 min
Jun 21, 9:37 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Traill	23 min
Jun 22, 3:53 PM CDT	Severe Thunderstorm Warning	FGF	Cass, Ransom, Richland	37 min
Jun 22, 6:03 PM CDT	Flash Flood Warning	FGF	Cass, Richland	12 hr

Nearby

Severe Thunderstorm Warnings in North Dakota, 2003 Every 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.