Alert archive / Minnesota / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 39, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Jun 12, 2008, 9:19 PM CDT for Aitkin County, Itasca County, Saint Louis County, Minnesota. It was in force for 41 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, 9:19 PM CDT (02:19 UTC)
- Expired
- Jun 12, 2008, 10:00 PM CDT
- In force
- 41 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
Counties Aitkin County, MN, Itasca County, MN, Saint Louis County, MN
The radar
The Duluth radar (KDLH), 85 km from the middle of the area, began a volume at 02:20 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, 2.3 hours before the alert went out and 149 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
- 308 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 1911 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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, 9:03 PM CDT, 16 minutes earlier.
Area forecast discussion, Jun 12, 9:03 PM CDT, 16 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE DULUTH MN
903 PM CDT THU JUN 12 2008
.UPDATE...BUSY SET UP THIS EVENING. SCATTERED STRONG TO SEVERE
STORMS SHOULD CONTINUE FOR NEXT HOUR OR TWO ACROSS MUCH OF
NORTHERN MINNESOTA...UNTIL SENSIBLE HEATING INSTABILITY WEAKENS
AND VORT MAX LIFTS NORTH AROUND FRONT SIDE OF UPPER LOW. MAIN
THREATS REMAIN DAMAGING WINDS AND LARGE HAIL WITH STRONG UNIFORM
WIND PROFILE. ALSO...MARINE FOG LAYER HAS RETURNED OVER MUCH OF
THE SHORELINE PER LATEST OBS THIS EVENING. EXPECT ONSHORE WEAK
FLOW TO CONTINUE THROUGH LATE NIGHT...KEEPING DENSE FOG IN PLACE
UNTIL WIND SHIFT EARLY FRIDAY MORNING. POSTED A DENSE FOG ADVISORY
ACCORDINGLY.
&&
.PREV DISCUSSION... /ISSUED 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 50 68 46 67 / 20 20 20 30
INL 50 64 45 65 / 40 40 30 30
BRD 50 68 50 72 / 30 20 10 20
HYR 54 72 48 71 / 30 20 10 20
ASX 51 70 50 69 / 30 20 10 30
&&
.DLH WATCHES/WARNINGS/ADVISORIES...
MN...DENSE FOG ADVISORY UNTIL 6 AM CDT FRIDAY FOR CARLTON/SOUTHERN
ST. LOUIS-SOUTHERN COOK/LAKESHORE-SOUTHERN LAKE/LAKESHORE.
WI...DENSE FOG ADVISORY UNTIL 6 AM CDT FRIDAY FOR ASHLAND-BAYFIELD-
DOUGLAS-IRON.
LS...NONE.
LILESHazardous weather outlook, Jun 12, 3:28 PM CDT, 5 hours 51 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
In the hours before
Local storm report, Jun 12, 8:06 PM CDT, 1 hour 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
806 PM CDT THU JUN 12 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 PM HAIL FEDERAL DAM 47.24N 94.22W
06/12/2008 E0.75 INCH NORTHERN CASS MN LAW ENFORCEMENT
&&
LILESLocal storm report, Jun 12, 8:28 PM CDT, 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
828 PM CDT THU JUN 12 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0745 PM HAIL 3 N WALKER 47.13N 94.58W
06/12/2008 E0.75 INCH CASS MN TRAINED SPOTTER
0745 PM HAIL WALKER 47.09N 94.58W
06/12/2008 E0.75 INCH CASS MN TRAINED SPOTTER
0825 PM HAIL 5 SW INGER 47.50N 94.06W
06/12/2008 E0.75 INCH ITASCA MN AMATEUR RADIO
&&
LILESLocal storm report, Jun 12, 8:49 PM CDT, 30 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
849 PM CDT THU JUN 12 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0840 PM TSTM WND GST 9 E BRAINERD 46.35N 94.01W
06/12/2008 M60 MPH CROW WING MN TRAINED SPOTTER
&&
LILESLocal storm report, Jun 12, 9:04 PM CDT, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
904 PM CDT THU JUN 12 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0824 PM TSTM WND GST BRAINERD 46.35N 94.19W
06/12/2008 M58.00 MPH CROW WING MN ASOS
&&
LILESThe office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 7:11 PM CDT | Severe Thunderstorm Warning | DLH | Koochiching | 16 min |
| Jun 12, 7:11 PM CDT | Tornado Warning | DLH | Cass | 49 min |
| Jun 12, 7:32 PM CDT | Severe Thunderstorm Warning | DLH | Koochiching, Saint Louis | 43 min |
| Jun 12, 7:43 PM CDT | Severe Thunderstorm Warning | DLH | Cass | 47 min |
| Jun 12, 7:56 PM CDT | Severe Thunderstorm Warning | DLH | Cass, Itasca | 64 min |
| Jun 12, 8:36 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Crow Wing | 54 min |
| Jun 12, 8:47 PM CDT | Dense Fog Advisory | DLH | Carlton, Cook, Lake, Saint Louis | 13 hr |
| Jun 12, 8:58 PM CDT | Severe Thunderstorm Warning | DLH | Itasca, Koochiching, Saint Louis | 62 min |
| Jun 12, 9:28 PM CDT | Severe Thunderstorm Warning | DLH | Koochiching | 22 min |
| Jun 12, 9:45 PM CDT | Severe Thunderstorm Warning | DLH | Carlton, Saint Louis | 45 min |
| Jun 12, 9:55 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 27 min |
| Jun 12, 10:17 PM CDT | Special Marine Warning | DLH | 42 min | |
| Jun 12, 10:17 PM CDT | Severe Thunderstorm Warning | DLH | Carlton, Saint Louis | 58 min |
| Jun 12, 10:27 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Cass, Crow Wing | 63 min |
| Jun 12, 11:04 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 41 min |
| Jun 12, 11:17 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Cass, Crow Wing, Itasca | 43 min |
| Jun 12, 11:22 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Carlton, Crow Wing, Pine | 53 min |
| Jun 12, 11:36 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Carlton, Itasca, Saint Louis | 39 min |
| Jun 12, 11:44 PM CDT | Severe Thunderstorm Warning | DLH | Cook, Lake | 46 min |
| Jun 12, 11:48 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Cass, Itasca, Saint Louis | 27 min |
| Jun 13, 12:06 AM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Carlton, Pine, Saint Louis | 43 min |
| Jun 13, 12:12 AM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Carlton, Itasca, Saint Louis | 48 min |
| Jun 13, 12:22 AM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Cass, Itasca | 28 min |
| Jun 13, 12:31 AM CDT | Special Marine Warning | DLH | 89 min | |
| Jun 13, 12:35 AM CDT | Severe Thunderstorm Warning | DLH | Carlton, Lake, Saint Louis | 40 min |
| Jun 13, 12:55 AM CDT | Severe Thunderstorm Warning | DLH | Itasca, Koochiching, Lake, Saint Louis | 50 min |
| Jun 13, 12:59 AM CDT | Severe Thunderstorm Warning | DLH | Itasca, Koochiching, Saint Louis | 46 min |
| Jun 13, 1:08 AM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 52 min |
| Jun 13, 1:40 AM CDT | Severe Thunderstorm Warning | DLH | Cook, Koochiching, Lake, Saint Louis | 65 min |
| Jun 13, 1:47 AM CDT | Special Marine Warning | DLH | 71 min | |
| Jun 13, 1:47 AM CDT | Severe Thunderstorm Warning | DLH | Cook, Lake | 58 min |
| Jun 13, 2:36 AM CDT | Severe Thunderstorm Warning | DLH | Cook | 69 min |
| Jun 13, 2:50 AM CDT | Special Marine Warning | DLH | 40 min | |
| Jun 13, 12:41 AM CDT | Severe Thunderstorm Warning | DLH | Bayfield, Douglas, Sawyer, Washburn | 64 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.