Alert archive / Minnesota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 101, NWS Duluth, MN

July 1, 2008Itasca County, Saint Louis County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jul 1, 2008, 10:22 PM CDT for Itasca County, Saint Louis County, Minnesota. It was in force for 38 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
Jul 1, 2008, 10:22 PM CDT (03:22 UTC)
Expired
Jul 1, 2008, 11:00 PM CDT
In force
38 min
Issued by
NWS Duluth, MN
Area
Storm-based polygon

Counties Itasca County, MN, Saint Louis County, MN

The radar

The Duluth radar (KDLH), 101 km from the middle of the area, began a volume at 03:24 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.

IssuedProductOfficeLasted
Jul 1, 4:50 PM CDTSevere Thunderstorm WatchSPC8 hr
Jul 1, 9:31 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 3.4 hours before the alert went out and 115 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-pSkew-T log-p diagram, International Fa, MN at 00:00Z on 2008-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 398 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 00:00Z on 2008-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
398 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
1897 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 Jul 1, 9:09 PM CDT, 1 hour 13 minutes earlier.

Area forecast discussion, Jul 1, 9:09 PM CDT, 1 hour 13 minutes before
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Hazardous weather outlook, Jul 1, 10:14 AM CDT, 12 hours 8 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DULUTH MN
1014 AM CDT TUE JUL 1 2008

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-021030-
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-
1014 AM CDT TUE JUL 1 2008

...RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE NORTHLAND
FROM LATE AFTERNOON INTO TONIGHT...

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

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT WILL MOVE SOUTHWARD OUT OF CANADA LATER TODAY AND
THROUGH THE REGION TONIGHT. THUNDERSTORMS ARE EXPECTED TO DEVELOP
ACROSS FAR NORTHERN MINNESOTA DURING THE AFTERNOON...WITH
THUNDERSTORMS SPREADING ACROSS THE REST OF THE AREA THIS EVENING.
WITH TEMPERATURES REACHING INTO THE MIDDLE TO UPPER 80S
TODAY...AND MOISTURE INCREASING THROUGHOUT THE DAY...THERE WILL BE
A CHANCE OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT ACROSS MUCH
OF THE AREA. THE BEST CHANCE FOR SEVERE THUNDERSTORMS WILL BE
ACROSS NORTHEASTERN MINNESOTA AND FAR NORTHWESTERN WISCONSIN.
LARGE HAIL AND DAMAGING WINDS WILL BE THE MAIN THREAT WITH ANY
SEVERE THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A CHANCE OF THUNDERSTORMS ACROSS PARTS OF THE NORTHLAND ON
WEDNESDAY...AND AGAIN FROM SATURDAY NIGHT INTO MONDAY.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT...
ESPECIALLY FROM LATE AFTERNOON THROUGH THIS EVENING.

LSZ121-140>148-021030-
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-
1014 AM CDT TUE JUL 1 2008

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

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT WILL MOVE SOUTHWARD OUT OF CANADA LATER TODAY AND
THROUGH THE REGION TONIGHT. THUNDERSTORMS ARE EXPECTED TO DEVELOP
ACROSS FAR NORTHERN MINNESOTA DURING THE AFTERNOON...WITH
THUNDERSTORMS SPREADING ACROSS THE REST OF THE AREA THIS EVENING.
WITH TEMPERATURES REACHING INTO THE MIDDLE TO UPPER 80S
TODAY...AND MOISTURE INCREASING THROUGHOUT THE DAY...THERE WILL BE
A CHANCE OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT ACROSS MUCH
OF THE AREA. THE BEST CHANCE FOR SEVERE THUNDERSTORMS WILL BE
ACROSS NORTHEASTERN MINNESOTA AND FAR NORTHWESTERN WISCONSIN.
LARGE HAIL AND DAMAGING WINDS WILL BE THE MAIN THREAT WITH ANY
SEVERE THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A CHANCE OF THUNDERSTORMS ACROSS PARTS OF THE NORTHLAND ON
WEDNESDAY...AND AGAIN FROM SATURDAY NIGHT INTO MONDAY.

MELDE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 8:05 PM CDTSevere Thunderstorm WarningDLHKoochiching45 min
Jul 1, 9:31 PM CDTSpecial Marine WarningDLH89 min
Jul 1, 10:08 PM CDTSevere Thunderstorm WarningDLHCook, Lake52 min
Jul 1, 10:17 PM CDTSevere Thunderstorm WarningDLHItasca43 min
Jul 1, 10:30 PM CDTSevere Thunderstorm WarningDLHCass60 min
Jul 1, 10:33 PM CDTSpecial Marine WarningDLH57 min
Jul 1, 10:34 PM CDTSevere Thunderstorm WarningDLHLake, Saint Louis56 min
Jul 1, 10:44 PM CDTSevere Thunderstorm WarningDLHSaint Louis35 min
Jul 1, 10:57 PM CDTSevere Thunderstorm WarningDLHItasca, Saint Louis42 min
Jul 1, 11:11 PM CDTSevere Thunderstorm WarningDLHLake, Saint Louis34 min
Jul 1, 11:29 PM CDTSevere Thunderstorm WarningDLHAitkin, Cass39 min
Jul 1, 11:49 PM CDTSpecial Marine WarningDLH56 min
Jul 2, 12:37 AM CDTSpecial Marine WarningDLH23 min
Jul 2, 12:45 AM CDTSevere Thunderstorm WarningDLHCass, Crow Wing60 min
Jul 2, 1:30 AM CDTSevere Thunderstorm WarningDLHAitkin, Crow Wing49 min
Jul 2, 2:27 AM CDTSevere Thunderstorm WarningDLHPine26 min
Jul 2, 12:31 AM CDTSevere Thunderstorm WarningDLHAshland, Bayfield44 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2008Every 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.