Alert archive / Minnesota / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 32, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Jun 12, 2008, 6:15 PM CDT for Itasca County, Koochiching County, Minnesota. It was in force for 27 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 12, 2008, 6:15 PM CDT (23:15 UTC)
- Expired
- Jun 12, 2008, 6:42 PM CDT
- In force
- 27 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
Counties Itasca County, MN, Koochiching County, MN
The radar
The Duluth radar (KDLH), 162 km from the middle of the area, began a volume at 23:18 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 12:00Z, 11.3 hours before the alert went out and 83 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 480 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 283 m²/s²
- 0-3 km storm-relative helicity
- 252 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 12, 2:11 PM CDT, 4 hours 4 minutes earlier.
Area forecast discussion, Jun 12, 2:11 PM CDT, 4 hours 4 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DULUTH MN 211 PM CDT THU JUN 12 2008 .DISCUSSION... FULLY OCCLUDED SFC SYSTEM POSITIONED JUST N OF MT/ND/CN BORDER AND MOVG VERY SLOWLY TO THE NE. LOLVL MSTR AND TRIGGER MECHANISM LACKING...BUT -20 500 MB TEMPS AND AFTN HTG IN DRY SLOT WILL RESULT IN RAPID DESTABILIZATION LATE AFTN/EVE...SO SLGT RISK IS RSNBL. CU FIELD ALREADY FORMING. SEE SWODY1 DISC FOR MORE INFO. SOME POPS WILL PERSIST THRU FRI AS UPR LOW SLOWLY SLIDES AWAY. AFT A BRIEF PD OF WEAK RIDGING...SEVERAL OTHER S/WVS SHOOT ACRS BORDER COUNTRY OVR THE WEEKEND...AFFECTING MAINLY THE NRN PART OF OUR CWA. MODELS STILL DEPICT AMPLIFYING UPR LVL RIDGE OVR MIDWEST NXT WEEK. GFS STILL STRONGER WITH THIS RIDGE THAN ECMWF...BUT IDEA IS THE SAME. TIMING OF PRECIP IN RETURN FLOW ON BACK SIDE OF SFC HIGH LATER NXT WEEK A BIT UNCERTAIN. KEPT TUE-THU PD DRY FOR NOW. && .AVIATION... DRY SLOT FROM DEEP SFC LOW OVER SE SASK HAS SWEPT ACROSS WRN 2/3 OF CWA WITH VFR DOMINATING. AREA OF MVFR/IFR ACROSS ERN CWA...INCLUDING HYR...IS ASSOCIATED WITH OCCLUDED FRONT. WITH UPPER LVL WINDS STILL PARALLEL TO THIS FEATURE....EXPECT MVFR/IFR TO CONTINUE INTO THIS EVENING BEFORE ANY IMPROVEMENT OCCURS. WITH COLD AIR ALOFT AND SFC HEATING...MAY SEE SCT RW/TRW THIS AFTERNOON/EVENING ALTHOUGH POPS ARE LOW IN ANY ONE LOCATION. DLH TERMINAL FCST IS TRICKY AS MARINE LAYER MAY TRY TO REDEVELOP/DEEPEN OVER AREA THIS EVENING ONCE MECHANICAL MIXING FROM DAYTIME HEATING DISSIPATES. HAVE INCLUDED TEMPO FOR LIFR AFTER MIDNIGHT. UPPER LOW WILL MOVE TOWARDS REGION TONIGHT. HIGHEST CHANCE FOR MVFR/IFR WILL OCCUR NEAR INL EARLY FRIDAY. && POINT TEMPS/POPS... DLH 48 68 46 67 / 20 20 20 30 INL 48 64 45 65 / 30 40 30 30 BRD 50 68 50 72 / 20 20 10 20 HYR 54 72 48 71 / 20 20 10 20 ASX 52 70 50 69 / 20 20 10 30 && .DLH WATCHES/WARNINGS/ADVISORIES... MN...NONE. WI...NONE. LS...NONE. 04/CANNON
Hazardous weather outlook, Jun 12, 3:28 PM CDT, 2 hours 47 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE DULUTH MN 328 PM CDT THU JUN 12 2008 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-131030- 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- 328 PM CDT THU JUN 12 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEASTERN MINNESOTA AND NORTHWESTERN WISCONSIN. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED THIS EVENING AND OVERNIGHT...MAINLY NORTH OF DULUTH. AN ISOLATED SEVERE THUNDERSTORM IS POSSIBLE LATE THIS EVENING. THE MAIN HAZARD WILL BE LARGE HAIL. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THUNDERSTORMS ARE POSSIBLE FRIDAY THROUGH MONDAY. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION MIGHT BE NEEDED THIS EVENING. LSZ121-140>148-131030- 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- 328 PM CDT THU JUN 12 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF WESTERN LAKE SUPERIOR. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED THIS EVENING AND OVERNIGHT...MAINLY NORTH OF DULUTH. AN ISOLATED SEVERE THUNDERSTORM IS POSSIBLE LATE THIS EVENING. THE MAIN HAZARD WILL BE LARGE HAIL. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THUNDERSTORMS ARE POSSIBLE FRIDAY THROUGH MONDAY. 04
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.