Alert archive / North Dakota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 18, NWS Grand Forks, ND

June 6, 2003Grand Forks County, Traill County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 6, 2003, 1:12 PM CDT for Grand Forks County, Traill County, North Dakota. It was in force for 48 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 6, 2003, 1:12 PM CDT (18:12 UTC)
Expired: Jun 6, 2003, 2:00 PM CDT
In force: 48 min
Issued by: NWS Grand Forks, ND
Area: Counties, with a storm outline in the text

Counties Grand Forks County, ND, Traill County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 13 km from the middle of the area, began a volume at 18:12 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.

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

Bismarck Municip, ND (KBIS), launched 12:00Z, 6.2 hours before the alert went out and 277 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: 1137 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -53 m²/s²
0-3 km storm-relative helicity: 9 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.

992 
WUUS53 KFGF 061812
SVRFGF
NDC035-097-061900-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
112 PM CDT FRI JUN 6 2003

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  SOUTH CENTRAL GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA AND
  NORTH CENTRAL TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA.

* UNTIL 200 PM CDT.

* AT 107 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER EXTREME NORTHERN TRAILL COUNTY...OR ABOUT
  20 MILES SOUTHWEST OF GRAND FORKS.  THE THUNDERSTORM WAS NEARLY
  STATIONARY.

* THE SEVERE THUNDERSTORM WILL REMAIN IN RURAL AREAS OF

  NORTHERN TRAILL COUNTY AND
  SOUTHERN GRAND FORKS COUNTY.

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

LAT...LON 4760 9715 4774 9723 4767 9741 4758 9735

$$
DK/8

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 6, 10:28 AM CDT, 2 hours 44 minutes earlier.

Area forecast discussion, Jun 6, 10:28 AM CDT, 2 hours 44 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1028 AM CDT FRI JUN 6 2003

.CURRENT OBSERVATIONS...
A COUPLE OF UPPER LEVEL WAVES ARE SHOWING UP NICELY ON VISIBLE
SATELLITE AND ON WATER VAPOR IMAGERY. A GOOD AREA OF CONVERGENCE IS
CURRENTLY GOING ON ACROSS CENTRAL NORTH DAKOTA. A DECENT SHORT WAVE
HAS BROKEN OFF FROM THE PARENT LOW AND IS PUSHING INTO THE
CONVERGENT AREA AROUND BISMARCK. TEMPERATURES ACROSS THE AREA HAVE
WARMED NICELY OVER THE NORTHERN VALLEY WITH SOME SCATTERED
CONVECTION LOCATED OVER EASTERN NORTH DAKOTA.

.THIS AFTERNOON...
EXPECT SCATTERED THUNDERSTORMS TO CONTINUE TO FIRE THIS AFTERNOON
WITH CONVECTIVE TEMPERATURES REMAINING RELATIVELY LOW. SHEAR REMAINS
WEAK TODAY HOWEVER SYNOPTIC SCALE FORCING IS BETTER THAN YESTERDAY.
ONE LIMITING FACTOR MAY BE CLOUD COVER. INVERTED TROUGH BEGINNING TO
DEVELOP RIGHT OVER THE RED RIVER VALLEY THIS MORNING AND COMBINED
WITH LEFT OVER OUTFLOW BOUNDARIES AND CONVERGENT ZONE...PLENTY OF
FORCING LOOKS TO BE IN PLACE.  WITH FREEZING LEVELS SIMILAR TO
YESTERDAY...A FEW MARGINALLY SEVERE STORMS ARE POSSIBLE. WILL
MONITOR TEMPERATURES WITH A FEW ADJUSTMENTS LIKELY DUE TO CLOUD
COVER TRENDS.

.FGF...NONE.

DONAVON

Hazardous weather outlook, Jun 6, 7:05 AM CDT, 6 hours 7 minutes before

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-061400-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
705 AM CDT FRI JUN 6 2003

...SEVERE THUNDERSTORMS ARE EXPECTED ACROSS PARTS OF NORTHWEST AND
WEST CENTRAL MINNESOTA FOR TODAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN NORTH DAKOTA...WEST
CENTRAL AND NORTHWEST MINNESOTA.

.DAY ONE...THIS AFTERNOON AND EVENING

ISOLATED SEVERE THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND
EVENING EAST OF A LINE FROM ROSEAU TO FERGUS FALLS MINNESOTA.
THUNDERSTORMS WILL PRODUCE MAINLY LARGE HAIL. THE SEVERE
THUNDERSTORMS WILL DEVELOP AFTER THE NOON HOUR AND SHOULD DISSIPATE
AROUND 8 PM.

AFTERNOON HEATING AND RELATIVELY COLD AIR ALOFT WILL PRODUCE
UNSTABLE CONDITIONS AGAIN THIS AFTERNOON. LOW PRESSURE OVER NORTHWEST
MINNESOTA WILL MOVE INTO EASTERN MINNESOTA BY THIS EVENING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

HOPPES

In the hours before

Local storm report, Jun 6, 10:27 AM CDT, 2 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
1027 AM CDT FRI JUN 6 2003

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

0325 PM    ERHARD                    MN   .75 INCH HAIL
06/05/03   OTTER TAIL

TG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 12:05 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier	40 min
Jun 6, 2:19 PM CDT	Tornado Warning	FGF	Cavalier	41 min
Jun 6, 4:47 PM CDT	Severe Thunderstorm Warning	FGF	Cass	43 min
Jun 6, 5:14 PM CDT	Flash Flood Warning	FGF	Cass	4 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.