Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 111, NWS Grand Forks, ND

July 1, 2002Lake of the Woods County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 1, 2002, 1:15 PM CDT for Lake of the Woods County, Minnesota. It was in force for 45 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: Jul 1, 2002, 1:15 PM CDT (18:15 UTC)
Expired: Jul 1, 2002, 2:00 PM CDT
In force: 45 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), 238 km from the middle of the area, began a volume at 18:17 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
Jul 1, 1:15 PM CDT	Hail 1	Lude, 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 12:00Z, 6.3 hours before the alert went out and 131 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: 1830 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 4 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.

879 
WUUS53 KFGF 011815
SVRFAR
MNC077-011900-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
114 PM CDT MON JUL 1 2002

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  LAKE OF THE WOODS COUNTY IN NORTH CENTRAL MINNESOTA.

* UNTIL 200 PM CDT.

* AT 112 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER LONG POINT...OR ABOUT 36 MILES EAST OF
  ROSEAU...MOVEMENT WAS TO THE EAST AT 70 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN MAINLY OVER LAKE OF THE WOODS.
  
THIS STORM HAS A HISTORY OF PRODUCING QUARTER SIZED HAIL.

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

LAT...LON 4903 9513 4884 9502 4892 9473 4912 9482


30
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 Jul 1, 10:30 AM CDT, 2 hours 45 minutes earlier.

Area forecast discussion, Jul 1, 10:30 AM CDT, 2 hours 45 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1030 AM CDT MON JUL 1 2002

A BROAD FLAT TROUGH WAS ALONG THE INTERNATIONAL BORDER. WATER VAPOR
LOOP SHOWS A SHORT WAVE NEAR LAKE YWG AND ANOTHER OVER FAR SOUTHERN
SASKATCHEWAN. POCKET OF HIGH THETA-E AIR WAS ACROSS EASTERN SD THIS
MORNING AND WILL SHIFT INTO WEST CENTAL MN THIS AFTERNOON. SURFACE
LOW WAS OVER NORTH CENTRAL SOUTH DAKOTA AND IS FORECAST TO MOVE INTO
WEST CENTRAL MINNESOTA THIS AFTERNOON. SURFACE DEWPOINTS HAVE JUMPED
INTO THE UPPER 60S IN SOUTHEAST ND ALREADY. STRONG SURFACE MOISTURE
FLUX CONVERGENCE WAS CENTERED OVER JMS. CONVERGENCE MAXIMUM APPEARS
TO STAY NORTH OF SURFACE LOW. HOWEVER 88D HAS STRONG STORMS FARTHER
N ALONG THE INTERNATIONAL BORDER. ETA MODEL SOUNDING AT ABR AND BIS
MATCHES REASONABLY WELL WITH THE MORNING OBSERVED. HOWEVER THE
OBSERVED SOUNDING AT GGW WAS MUCH DRIER AROUND 700 MB THAN WHAT THE
ETA HAD FORECAST. KMVX 88D VAD WIND SHOWING GOOD INFLOW THIS MORNING
WITH SE WIND AT 30 KNOTS. KBIS VAD WIND HAD A BACKING PROFILE. GOING
FORECAST LOOKS REASONABLE. WILL CHECK ZONES.

.FGF...NONE
HOPPES

In the hours before

Local storm report, Jul 1, 12:55 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
1255 PM CDT MON JUL 01 2002

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1045 AM    JOLIETTE                  ND   .88 INCH HAIL
07/01/02   PEMBINA

1105 AM    3 N LANCASTER             MN   .88 INCH HAIL
07/01/02   KITTSON

1135 AM    2 N HALLOCK               MN   .88 INCH HAIL
07/01/02   KITTSON

1155 AM    6 E LANCASTER             MN   .75 INCH HAIL
07/01/02   KITTSON

1228 PM    7 SW WARROAD              MN   2.75 INCH HAIL
07/01/02   ROSEAU

1233 PM    WARROAD                   MN   1.75 INCH HAIL
07/01/02   ROSEAU

1238 PM    2 E WARROAD               MN   .88 INCH HAIL
07/01/02   ROSEAU

1245 PM    SWIFT                     MN   TORNADO
07/01/02   ROSEAU                         REPORTED BY SHERRIFS
                                          OFFICE

1245 PM    1 W ROSEAU                MN   1.75 INCH HAIL
07/01/02   ROSEAU

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 10:37 AM CDT	Severe Thunderstorm Warning	FGF	Kittson	38 min
Jul 1, 11:11 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami	34 min
Jul 1, 11:16 AM CDT	Severe Thunderstorm Warning	FGF	Kittson	44 min
Jul 1, 12:10 PM CDT	Severe Thunderstorm Warning	FGF	Roseau	50 min
Jul 1, 12:24 PM CDT	Tornado Warning	FGF	Lake of the Woods, Roseau	51 min

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.