Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 248, NWS Duluth, MN

September 26, 2008Burnett County, Sawyer County, Washburn County, Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at Sep 26, 2008, 11:54 PM CDT for Burnett County, Sawyer County, Washburn County, Wisconsin. It was in force for 36 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: Sep 26, 2008, 11:54 PM CDT (04:54 UTC)
Expired: Sep 27, 2008, 12:30 AM CDT
In force: 36 min
Issued by: NWS Duluth, MN
Area: Storm-based polygon

Counties Burnett County, WI, Sawyer County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 112 km from the middle of the area, began a volume at 04:53 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 nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 4.9 hours before the alert went out and 321 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: 15 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 1573 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: -21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Sep 26, 8:08 PM CDT, 3 hours 46 minutes earlier.

Area forecast discussion, Sep 26, 8:08 PM CDT, 3 hours 46 minutes before

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Hazardous weather outlook, Sep 26, 3:40 PM CDT, 8 hours 14 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DULUTH MN
340 PM CDT FRI SEP 26 2008

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-271030-
KOOCHICHING-NORTHERN ST. LOUIS-NORTHERN COOK/NORTHERN LAKE-
NORTHERN ITASCA-CENTRAL ST. LOUIS-SOUTHERN LAKE/LAKESHORE-
SOUTHERN COOK/LAKESHORE-NORTHERN CASS-SOUTHERN ITASCA-
SOUTHERN CASS-CROW WING-NORTHERN AITKIN-SOUTHERN AITKIN-
CARLTON/SOUTHERN ST. LOUIS-PINE-DOUGLAS-BAYFIELD-ASHLAND-IRON-
BURNETT-WASHBURN-SAWYER-PRICE-
340 PM CDT FRI SEP 26 2008

...SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH THE EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MINNESOTA AND
NORTHWEST WISCONSIN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SEVERE THUNDERSTORMS WILL BECOME INCREASINGLY POSSIBLE LATE THIS
AFTERNOON INTO THE EVENING. ALTHOUGH A SEVERE STORM IS POSSIBLE
OVER MOST OF NORTHEAST MINNESOTA...AND FAR NORTHWEST
WISCONSIN...THE AREA WITH THE HIGHEST CHANCE FOR SEVERE STORMS
WILL BE FROM THE ARROWHEAD...IRON RANGE...SOUTHWEST TOWARD THE BRAINERD
LAKES AREA...AND AREAS EAST INTO FAR NORTHWEST WISCONSIN INCLUDING
THE TWIN PORTS. THE MAIN THREATS WILL BE LARGE HAIL...DAMAGING WIND
AND HEAVY RAIN.

THE SEVERE WEATHER THREAT WILL DIMINISH AFTER MIDNIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THUNDERSTORMS WILL BE POSSIBLE OVER PARTS OF NORTHWEST WISCONSIN
ON SATURDAY...AND OVER NORTH CENTRAL AND NORTHWEST PORTIONS OF
MINNESOTA SUNDAY AFTERNOON. THUNDERSTORMS WILL ALSO BE POSSIBLE
OVER MUCH OF THE AREA SUNDAY NIGHT INTO MONDAY.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON AND
TONIGHT.

LSZ121-140>148-272045-
BAYFIELD TO OAK POINT WI-GRAND PORTAGE TO GRAND MARAIS MN-
GRAND MARAIS TO TACONITE HARBOR MN-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
SILVER BAY HARBOR TO TWO HARBORS MN-TWO HARBORS TO DULUTH MN-
DULUTH MN TO PORT WING WI-PORT WING TO SAND ISLAND WI-
SAND ISLAND TO BAYFIELD WI-OAK POINT TO SAXON HARBOR WI-
336 PM CDT FRI SEP 26 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF
WESTERN LAKE SUPERIOR.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SEVERE THUNDERSTORMS WILL BECOME INCREASINGLY POSSIBLE LATE THIS
AFTERNOON INTO THE EVENING. ALTHOUGH A SEVERE STORM IS POSSIBLE
OVER MOST OF NORTHEAST MINNESOTA...AND FAR NORTHWEST
WISCONSIN...THE AREA WITH THE HIGHEST CHANCE FOR SEVERE STORMS
WILL BE FROM THE ARROWHEAD...IRON RANGE...SOUTHWEST TOWARD THE BRAINERD
LAKES AREA...AND AREAS EAST INTO FAR NORTHWEST WISCONSIN INCLUDING
THE TWIN PORTS. THE MAIN THREATS WILL BE LARGE HAIL...DAMAGING WIND
AND HEAVY RAIN.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THUNDERSTORMS WILL BE POSSIBLE OVER PARTS OF THE SOUTH SHORE
ON SATURDAY...AND AGAIN OVER MUCH OF THE AREA SUNDAY NIGHT INTO
MONDAY.

MELDE

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB ADDRESS:
HTTP://WWW.WEATHER.GOV/DULUTH (ALL LOWER CASE)

In the hours before

Local storm report, Sep 26, 6:21 PM CDT, 5 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
621 PM CDT FRI SEP 26 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0620 PM     HAIL             BACKUS                  46.82N 94.51W
09/26/2008  E1.00 INCH       CASS               MN   TRAINED SPOTTER

&&

MELDE

Local storm report, Sep 26, 7:19 PM CDT, 4 hours 35 minutes before

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Special weather statement, Sep 26, 7:21 PM CDT, 4 hours 33 minutes before

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Local storm report, Sep 26, 8:42 PM CDT, 3 hours 12 minutes before

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Local storm report, Sep 26, 11:46 PM CDT, 8 minutes before

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Local storm report, Sep 26, 11:46 PM CDT, 8 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 26, 7:02 PM CDT	Flash Flood Warning	DLH	Aitkin, Cass, Crow Wing, Itasca, Saint Louis	108 min
Sep 26, 7:32 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	43 min
Sep 26, 7:36 PM CDT	Areal Flood Advisory	DLH	Cook, Lake, Saint Louis	3 hr
Sep 26, 8:09 PM CDT	Special Marine Warning	DLH		96 min
Sep 26, 9:44 PM CDT	Special Marine Warning	DLH		51 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2008 Every severe thunderstorm warning in 2008

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.