Alert archive / Minnesota / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 35, NWS Duluth, MN

June 23, 2005Cass County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jun 23, 2005, 8:24 PM CDT for Cass County, Minnesota. It was in force for 66 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 23, 2005, 8:24 PM CDT (01:24 UTC)
Expired: Jun 23, 2005, 9:30 PM CDT
In force: 66 min
Issued by: NWS Duluth, MN
Area: Counties, with a storm outline in the text

County Cass County, MN

The radar

The Duluth radar (KDLH), 161 km from the middle of the area, began a volume at 01:26 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 23, 6:35 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 1.4 hours before the alert went out and 196 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: 3125 J/kg
Mixed-layer CIN: -99 J/kg
Mixed-layer LCL: 1532 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 196 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 11.8

Open this sounding in Storm Lab

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 23, 2:57 PM CDT, 5 hours 27 minutes earlier.

Area forecast discussion, Jun 23, 2:57 PM CDT, 5 hours 27 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DULUTH MN
257 PM CDT THU JUN 23 2005

.DISCUSSION...MAIN CONCERNS ARE ON TSRA TONIGHT AND TOMORROW. 18Z
SFC ANALYSIS PLACED SFC LOW CENTERS IN MANITOBA WITH A COLD FRONT
EXTENDING SWWD INTO EASTERN ND. SATELLITE AND 88-D IMAGERY INDICATE
TSRA DEVELOPING ALONG AND JUST AHEAD OF THE COLD FRONT. SOME
ELEVATED TSRA TRYING TO GET GOING IN NW QUAD OF THE FA. LIMITING
FACTOR IN THESE STORMS IS THEY ARE IN AXIS OF WARM AIR ALOFT...SO A
GOOD CAP IN PLACE. HOWEVER...WITH PLENTY OF SUN TODAY...ATMOSPHERE
HAS UNDERGONE EXCELLENT DESTABILIZATION WITH SFC BASED LIS AROUND
-10C AND SBCAPES FROM 3000 TO 5000 J/KG PER 19Z LAPS DATA.

EXPECT THE COLD FRONT TO MOVE THROUGH THE FA TONIGHT. TSRA WILL
BECOME MORE NUMEROUS WITH TIME...SOME MAY REACH SEVERE LEVELS. SEE
SWODY1 FOR GREATER DETAIL. TSRA WILL END FROM NW TO SE OVERNIGHT AS
HIGH PRESSURE BUILDS IN AND COLD FRONT EXITS. KEPT A SMALL POP IN
FAR EASTERN WI FA DUE TO PROXIMITY TO THE FRONT. A QUIET FRIDAY
NIGHT AND SATURDAY ARE ON TAP AS THE SFC HIGH MOVES THROUGH.

NEXT ROUND OF TSRA EXPECTED SATURDAY NIGHT AND SUNDAY AS AN UPPER
LEVEL SHORT WAVE TROF MOVES THROUGH THE FA. UPPER LEVEL RIDGING
RETURNS SUNDAY NIGHT AND LASTS THROUGH MONDAY NIGHT. FA REMAINS
UNDER UNSTABLE SOUTHWESTERLY FLOW ALOFT THROUGH THE FORECAST PERIOD.
PIECES OF SHORT WAVE ENERGY WILL EJECT FROM UPPER LEVEL TROF OVER
THE ROCKIES AND BE DIFFICULT TO TIME. SO KEPT WITH SMALL OR LOW POPS
THROUGH DAY 7.

&&

.AVIATION...VFR CONDS EXPECTED THRU TAF PD EXCEPT BRIEF PDS OF MVFR
OVRNGT IN ISOLD TSTMS.

&&

.DLH WATCHES/WARNINGS/ADVISORIES...

MN...NONE.
WI...NONE.

GSF/04

Hazardous weather outlook, Jun 23, 8:04 AM CDT, 12 hours 20 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE DULUTH MN
804 AM CDT THU JUN 23 2005

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-241230-
ASHLAND-BAYFIELD-BURNETT-C. ST. LOUIS-CROW WING-DOUGLAS-IRON-
KOOCHICHING-N. AITKIN-N. CASS-N. ITASCA-N. LAKE/N. COOK-N. ST. LOUIS-
PINE-PRICE-S. AITKIN-S. CASS-S. COOK/LAKESHORE-S. ITASCA-
S. LAKE/LAKESHORE-S. ST. LOUIS/CARLTON-SAWYER-WASHBURN-
804 AM CDT THU JUN 23 2005

...SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEASTERN MINNESOTA AND
NORTHWESTERN WISCONSIN

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS NORTHEASTERN
MINNESOTA AND NORTHWESTERN WISCONSIN THIS AFTERNOON AND TONIGHT. A
COLD FRONT MOVING ACROSS THE UPPER MIDWEST WILL PRODUCE SCATTERED
THUNDERSTORMS THIS AFTERNOON AND TONIGHT. SOME OF THESE THUNDERSTORMS
MAY BE SEVERE...PRODUCING DAMAGING WINDS...LARGE HAIL AND FREQUENT
LIGHTNING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THERE IS A CHANCE OF THUNDERSTORMS SATURDAY NIGHT THROUGH SUNDAY
NIGHT...AND AGAIN TUESDAY AFTERNOON THROUGH WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON OR TONIGHT.

&&

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING URL:

HTTP://WWW.CRH.NOAA.GOV/DLH

BERDES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 7:17 PM CDT	Severe Thunderstorm Warning	DLH	Koochiching	28 min
Jun 23, 7:35 PM CDT	Severe Thunderstorm Warning	DLH	Itasca	29 min
Jun 23, 7:42 PM CDT	Severe Thunderstorm Warning	DLH	Koochiching	48 min
Jun 23, 8:13 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	38 min
Jun 23, 9:14 PM CDT	Tornado Warning	DLH	Cass	46 min
Jun 23, 9:21 PM CDT	Tornado Warning	DLH	Itasca	31 min
Jun 23, 9:32 PM CDT	Severe Thunderstorm Warning	DLH	Cass	27 min
Jun 23, 9:35 PM CDT	Tornado Warning	DLH	Saint Louis	62 min
Jun 23, 9:49 PM CDT	Severe Thunderstorm Warning	DLH	Crow Wing	52 min
Jun 23, 9:57 PM CDT	Severe Thunderstorm Warning	DLH	Cass	24 min
Jun 23, 10:41 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	34 min
Jun 23, 11:10 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	35 min
Jun 23, 11:21 PM CDT	Special Marine Warning	DLH		54 min
Jun 24, 9:19 AM CDT	Severe Thunderstorm Warning	DLH	Price	21 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2005 Every severe thunderstorm warning in 2005

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.