Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 61, NWS Grand Forks, ND

June 9, 2002Lake of the Woods County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 9, 2002, 7:49 PM CDT for Lake of the Woods County, Minnesota. It was in force for 41 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 9, 2002, 7:49 PM CDT (00:49 UTC)
Expired: Jun 9, 2002, 8:30 PM CDT
In force: 41 min
Issued by: NWS Grand Forks, ND
Area: Counties, with a storm outline in the text

County Lake of the Woods County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 241 km from the middle of the area, began a volume at 00:48 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.

What was reported inside it

Time	Report	Where	Remark
Jun 9, 8:23 PM CDT	Hail 0.75	Clementson, MN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 0.8 hours before the alert went out and 92 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 543 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 283 m²/s²
0-3 km storm-relative helicity: 475 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFGF 100049
SVRFAR
MNC077-100130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
749 PM CDT SUN JUN 9 2002

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  EAST CENTRAL LAKE OF THE WOODS COUNTY IN NORTH CENTRAL MINNESOTA.

* UNTIL 830 PM CDT.

* AT 743 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 17 MILES SOUTHWEST OF BAUDETTE...OR ABOUT 46
  MILES SOUTHEAST OF ROSEAU...MOVEMENT WAS TO THE NORTHEAST AT 40
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  BAUDETTE AT 805 PM AND
  CLEMENTSON AT 815 PM.

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

LAT...LON 4861 9496 4844 9485 4869 9391 4892 9407


8

NNNN

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 Jun 9, 2:45 PM CDT, 5 hours 4 minutes earlier.

Area forecast discussion, Jun 9, 2:45 PM CDT, 5 hours 4 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
245 PM CDT SUN JUN 9 2002

...MAIN FORECAST CHALLENGE CONTINUES TO FOCUS ON PERIODIC CONVECTIVE
BOUTS INTO MONDAY IN CONJUNCTION WITH WESTERN TROUGH AND ASSOCIATED
FRONTAL BOUNDARY...

.CURRENT OBSERVATIONAL OVERVIEW...
18Z MSAS ANALYSIS DEPICTED LOW PRESSURE OVER NORTH CENTRAL SOUTH
DAKOTA WITH ASSOCIATED WARM FRONT DRAPED FROM CENTRAL RED RIVER
VALLEY INTO MINNESOTA. LATEST KMVX RADAR AND SATELLITE IMAGERY
INDICATED EARLIER MCS CONTINUES TO MOVE EAST WITH SOME RESIDUAL
CONVECTION FIRING ALONG AND JUST AHEAD OF NORTHWARD MOVING WARM
FRONT.

.FORECAST DETAILS...
UNSETTLED CONVECTIVE PERIOD EXPECTED TO CONTINUE INTO MONDAY AS DEEP
500MB WESTERN TROUGH SLOWLY KICKS NORTHEAST INTO SOUTHERN CANADA BY
LATE TUESDAY. SURFACE MOISTURE INFLUX IN PROXIMITY TO WARM FRONT
COUPLED WITH STRONG INSTABILITY SUGGESTS SCATTERED THUNDER THREAT A
GOOD BET TONIGHT ACROSS ENTIRE CWA. FEEL ANOTHER MCS WILL INITIATE
LATER THIS EVENING ACROSS EASTERN MONTANA AND WESTERN NORTH DAKOTA
AND THEN TRACK EAST ALONG INSTABILITY AXIS OVERNIGHT. APPEARS
GREATEST RISK WILL BE ACROSS NORTHERN COUNTIES. EARLIER TORRENTIAL
RAINS COUPLED WITH ADDITIONAL THREAT SUGGESTS CONTINUATION OF FLOOD
WATCH PRUDENT PATH TO TAKE. LATER MONDAY/MONDAY EVENING SECONDARY
SEVERE THREAT AS UPPER LEVEL TROUGH SWINGS PRE-FRONTAL TROUGH EAST
THROUGH AREA.

.EXTENDED
UPPER LOW FINALLY KICKS EAST THURSDAY WITH BUILDING WESTERN UPPER
LEVEL RIDGE TURNING UPPER LEVEL FLOW TO THE NORTHWEST OVER THE
REGION. TIMING OF PERIODIC SHORTWAVES EMBEDDED IN FLOW WILL BE
DIFFICULT WITH PRESENT INDICATIONS POINTING TO BEST POP THREAT
ON SATURDAY IN CONJUNCTION WITH TROUGH PASSAGE. RESULTANT FLOW
SHOULD KEEP MAIN TRAJECTORY OF AIR COMING FROM CANADA...THUS
TEMPERATURES SHOULD REMAIN BELOW JUNE NORMS THROUGH PERIOD.

.FGF...FLOOD WATCH ENTIRE FORECAST AREA TONIGHT INTO MONDAY.

BERG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 9:34 PM CDT	Flash Flood Warning	FGF	Beltrami, Lake of the Woods	3 hr
Jun 10, 7:54 AM CDT	Flash Flood Warning	FGF	Lake of the Woods, Roseau	6 hr
Jun 10, 8:09 AM CDT	Flash Flood Warning	FGF	Lake of the Woods, Roseau	6 hr
Jun 10, 12:46 PM CDT	Severe Thunderstorm Warning	FGF	Kittson	44 min
Jun 10, 1:08 PM CDT	Flash Flood Warning	FGF	Kittson	4 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.