Alert archive / Minnesota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 113, NWS Grand Forks, ND

July 6, 2003Clearwater County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 6, 2003, 5:09 PM CDT for Clearwater County, Minnesota. It was in force for 66 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 6, 2003, 5:09 PM CDT (22:09 UTC)
Expired: Jul 6, 2003, 6:15 PM CDT
In force: 66 min
Issued by: NWS Grand Forks, ND
Area: Counties, with a storm outline in the text

County Clearwater County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 143 km from the middle of the area, began a volume at 22:11 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
Jul 6, 2:20 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.2 hours before the alert went out and 346 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: 735 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1169 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: -10 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 
WUUS53 KFGF 062209
SVRFGF
MNC029-062315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
510 PM CDT SUN JUL 6 2003

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  NORTHERN CLEARWATER COUNTY IN NORTHWEST MINNESOTA.

* UNTIL 615 PM CDT.

* AT 506 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 2 MILES EAST OF CLEARBROOK...OR ABOUT 27 MILES
  NORTHWEST OF BEMIDJI...MOVEMENT WAS TO THE NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN IN RURAL AREAS OF

  CENTRAL CLEARWATER COUNTY...
  NORTHERN CLEARWATER COUNTY AND
  NORTHEASTERN CLEARWATER COUNTY.

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

LAT...LON 4771 9555 4745 9552 4764 9521 4796 9531

$$

8

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 3:45 AM CDT	Severe Thunderstorm Warning	FGF	Polk	45 min
Jul 6, 4:20 AM CDT	Severe Thunderstorm Warning	FGF	Red Lake	40 min
Jul 6, 1:29 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods, Roseau	46 min
Jul 6, 2:15 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	30 min
Jul 6, 3:14 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	31 min
Jul 6, 4:55 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	65 min
Jul 6, 5:15 PM CDT	Tornado Warning	FGF	Beltrami	45 min
Jul 6, 5:58 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Hubbard	62 min
Jul 6, 6:50 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail	40 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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.