Alert archive / Minnesota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 32, NWS Grand Forks, ND

June 9, 2000Pennington County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 9, 2000, 2:22 AM CDT for Pennington County, Minnesota. It was in force for 33 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 9, 2000, 2:22 AM CDT (07:22 UTC)
Expired: Jun 9, 2000, 2:55 AM CDT
In force: 33 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Pennington County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 113 km from the middle of the area, began a volume at 07:23 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, 2:30 AM CDT	Hail 0.75	Thief River Falls, 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.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 7.4 hours before the alert went out and 210 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: 1351 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 109 m²/s²
0-3 km storm-relative helicity: 198 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 090723
SVRFAR
MNC113-090755-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
222 AM CDT FRI JUN 9 2000

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN PENNINGTON COUNTY IN NORTHWEST MINNESOTA

* UNTIL 255 AM CDT

* AT 218 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 2 MILES SOUTH OF MAVIE...OR ABOUT 10 MILES EAST
  OF THIEF RIVER FALLS...MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GOODRIDGE AT 235 AM CDT

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

DAMAGING WINDS...LARGE HAIL...DEADLY LIGHTNING AND TORNADOES ARE ALL
POSSIBLE IN SEVERE THUNDERSTORMS. SEEK SHELTER IN A REINFORCED
BUILDING IMMEDIATELY.

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 8, 8:40 PM CDT, 5 hours 42 minutes earlier.

Area forecast discussion, Jun 8, 8:40 PM CDT, 5 hours 42 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
840 PM CDT THU JUN 8 2000

...TSRA/SEVERE POTENTIAL OVERNIGHT CURRENT FORECAST CONCERN...

00Z SFC ANALYSIS PLACES STATIONARY FRONT JUST SOUTH OF ND BORDER
BETWEEN ABERDEEN AND WAHPETON. WILDLY UNSTABLE AIRMASS IN VICINITY
OF THIS BOUNDARY WITH LI/S AS LOW AS -13C BUT WARM MID-LEVEL TEMPS
HAVE SUPRESSED CONVECTION ACROSS MOST OF ND/SD ASIDE FROM FAR WEST. A
FEW CLUSTERS OF STORMS HAVE FIRED ON BACSKIDE OF RIDGE AND HAVE
RIDDEN UP TOWARD FAR WRN ND/ERN MT. WHILE TOPS ARE QUITE
COOL...TREND HAS BEEN FOR WEAKENING AS THEY ENTER COOLER/STABILIZED
ENVRINMENT WELL NORTH OF FRONT WHERE LOW LEVEL CAA IS
OCCURRING...ALONG WITH SOME INTRUSION OF LOWER TD/S IN N/NE FLO.
MSAS INDICATES AN IMPRESSIVE INSTABILITY GRADIENT ACROSS SOUTHERN
1/2 OF ND...WITH MAX WAA NOW BEGINNING TO SHIFT A BIT FURTHER WEST
INTO NCNTRL SD AS LOW LEVEL JET SHOULD INCREASE THERE...PULLING
FRONT BACK NORTH OVERNIGHT.

U/L JET ENERGY ALONG WITH VORTS RIDING ON BOTH SIDES OF RIDGES
APPEAR TO BE THE MECHANISMS THAT MAY PROVIDE ENOUGH SUPPORT ON EDGE
OF CAP TO CAUSE ELEVATED CONVECTION NORTH OF FRONT. TWO SUCH AREAS
WOULD BE SW ND ARCING NE TOWARDS NE ND...AND ANOTHER ONE IN FAR
NE CWA SLIDING SE THRU ERN MN AND WI. MESO-ETA HAS NAILED THE FIRST
AREA OF CONVECTION IN MT AND IT WOULD PLACE AN MCS BETWEEN KISN AND
KMOT AROUND 06Z WITH ANOTHER AREA OF TSRA JUST EAST OF KBJI. LLJ UP
TO 50KTS FEEDING TD/S AROUND 70 IN NRN SD WILL INTERACT WITH THE U/L
DYNAMICS ON EDGE OF CAP IN THESE AREAS...WITH THE CLUSTER TO THE NW
APPEARING TO BE OF MORE CONCERN WITH THE H7 FLO FROM THE W/SW.
A 50KT E FLO AT H85 IN NORTHERN SECTIONS WILL PROVIDE STRONG VERTICAL
SHEAR PROFILES FOR SUPERCELLS AND WBZ LEVELS WOULD BE BIT LOWER IN
THESE REGIONS ON THE END OF THE MID-LEVEL CAP SO LARGE HAIL WOULD BE
A THREAT.

WILL TINKER WITH TIMING OF TSRA IN CURRENT ZONE PACKAGE AND ADD SOME
CLOUD COVER TO SOUTHERN ZONES FOR ANY BLOWOFF FROM STORMS RIDING
NORTH. NO CHANGE EXPECTED TO TEMP RANGES.

.FGF...NONE.

SOROKA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 12:04 AM CDT	Severe Thunderstorm Warning	FGF	Polk, Red Lake	31 min
Jun 9, 12:14 AM CDT	Severe Thunderstorm Warning	FGF	Clearwater	31 min
Jun 9, 12:27 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami	33 min
Jun 9, 12:43 AM CDT	Severe Thunderstorm Warning	FGF	Clearwater	32 min
Jun 9, 1:00 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami	45 min
Jun 9, 1:23 AM CDT	Severe Thunderstorm Warning	FGF	Marshall	32 min
Jun 9, 1:54 AM CDT	Severe Thunderstorm Warning	FGF	Marshall	31 min
Jun 9, 2:21 AM CDT	Severe Thunderstorm Warning	FGF	Marshall	29 min
Jun 9, 3:00 AM CDT	Severe Thunderstorm Warning	FGF	Kittson	30 min
Jun 9, 3:29 AM CDT	Severe Thunderstorm Warning	FGF	Kittson, Marshall	31 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2000 Every severe thunderstorm warning in 2000

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.