Alert archive / Minnesota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 4, NWS Duluth, MN

June 9, 2000Saint Louis County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jun 9, 2000, 2:25 AM CDT for Saint Louis County, Minnesota. It was in force for 50 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, 2:25 AM CDT (07:25 UTC)
Expired: Jun 9, 2000, 3:15 AM CDT
In force: 50 min
Issued by: NWS Duluth, MN
Area: Whole counties

County Saint Louis County, MN

What was reported inside it

Time	Report	Where	Remark
Jun 9, 2:30 AM CDT	Thunderstorm Wind 50 E	Iron Jct, MN	Trees were blown down. The wind speed is estimated.

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 126 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 KDLH 090726
SVRDLH
MNC137-090815-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DULUTH MN
225 AM CDT FRI JUN 9 2000

THE NATIONAL WEATHER SERVICE IN DULUTH MN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL ST. LOUIS COUNTY IN MINNESOTA

* UNTIL 315 AM CDT

* AT 225 AM CDT DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG A
  LINE EXTENDING FROM 27 MILES NORTHEAST OF HIBBING TO 20 MILES
  NORTHEAST OF HIBBING...MOVING EAST AT 40 MPH.

* THE LINE OF SEVERE THUNDERSTORMS WILL BE NEAR...
  VIRGINIA BY 230 AM CDT
  IDINGTON BY 230 AM CDT
  BIWABIK BY 245 AM CDT
  HOYT LAKES BY 300 AM CDT
  EMBARRASS BY 300 AM CDT

GOLFBALL SIZE HAIL OR LARGER IS LIKELY WITH THIS LINE OF 
STORMS...ALONG WITH WINDS TO 70 MPH. TAKE COVER IN A STURDY BUILDING 
AND STAY AWAY FROM WINDOWS. REMEMBER...SEVERE THUNDERSTORMS CAN AND 
OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE ADVANCED WARNING. 
    
$$
DAP

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 Duluth, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 8, 2:45 PM CDT, 11 hours 40 minutes earlier.

Area forecast discussion, Jun 8, 2:45 PM CDT, 11 hours 40 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DULUTH MN
245 PM CDT THU JUN 8 2000

FORECAST CONCERN...SVR STORM CHCS TONIGHT AND TOMORROW NIGHT

DISCUSSION...PLENTY OF ACTION TO DEAL WITH. ONGOING
THUNDERSTORMS OVER SOUTHERN CWA IN RESPONSE TO STRONG 700H
VORT. ALL MODELS PICKED UP ON IT...HOWEVER ETA IGNORES PRECIP. THIS
VORT PROVIDED ENOUGH FORCING TO OVERCOME STRONG CAP. ALSO HAVE
500H VORT PROGRESSING ACROSS THE NORTH CWA RESULTING IN SHOWERS. IN
LIGHT OF ONGOING STORMS HAVE DECIDED TO STAY WITH A NGM/AVN BLEND.

PLENTY OF FORCING TONIGHT. MOISTURE CONVERGENCE IN RESPONSE TO A
STRONG LLJ SHOULD INITIATE CONVECTION OVER CWA THAT WILL DRIFT
EAST OVERNIGHT. STRONG ISENTROPIC LIFT ON 310 AND 315K SURFACES HELP
AS WELL. ALSO HAVE JET SUPPORT BUT MODELS CONFUSED ON JUST HOW MUCH
AND WHERE. WENT WITH THUNDERSTORMS LIKELY EVERYWHERE AND THREW IN
SEVERE WORDING FOR SOUTHERN ZONES.

FRIDAY COULD HAVE LINGERING TSTORMS IN NORTH AND EAST ZONES...BUT
OTHERWISE OK. FRIDAY NIGHT MAIN ENERGY MOVES EAST. SHOULD AGAIN BE
AN ACTIVE NIGHT WITH STRONG LLJ AND PVA.

GUIDANCE TEMPS OK. SHOULD INITIATE LAKE BREEZE WITH STRONG
EAST FLOW.

.DLH...NONE.

DRN/TAP

In the hours before

Special weather statement, Jun 9, 1:14 AM CDT, 1 hour 11 minutes before

LSZ162-090815-

MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
114 AM CDT FRI JUN 9 2000

...STRONG THUNDERSTORMS OVER LAKE SUPERIOR...

AT 112 AM CDT...DOPPLER WEATHER RADAR INDICATED STRONG THUNDERSTORMS
16 MILES NORTHEAST OF SAXON HARBOR. THESE STORMS WERE MOVING EAST AT
50 KNOTS.

MARINERS CAN EXPECT GUSTY WINDS...LOCALLY HIGH WAVES...DANGEROUS
LIGHTNING AND HEAVY DOWNPOURS. BOATERS SHOULD STAY IN HARBOR UNTIL
THIS STORM PASSES.

STEWART

The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 9, 12:48 AM CDT	Severe Thunderstorm Warning	DLH	Itasca, Koochiching	57 min
Jun 9, 2:00 AM CDT	Severe Thunderstorm Warning	DLH	Lake	45 min
Jun 9, 3:30 AM CDT	Severe Thunderstorm Warning	DLH	Lake	60 min
Jun 9, 3:48 AM CDT	Severe Thunderstorm Warning	DLH	Cook	57 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.