Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 153, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Aug 23, 2012, 2:10 PM CDT for Lake 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
- Aug 23, 2012, 2:10 PM CDT (19:10 UTC)
- Expired
- Aug 23, 2012, 2:51 PM CDT
- In force
- 41 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Lake County, MN, Saint Louis County, MN
The radar
The Duluth radar (KDLH), 83 km from the middle of the area, began a volume at 19:12 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, 7.2 hours before the alert went out and 152 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
- 585 J/kg
- Mixed-layer CIN
- -197 J/kg
- Mixed-layer LCL
- 1540 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- -20 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 Aug 23, 12:35 PM CDT, 1 hour 35 minutes earlier.
Area forecast discussion, Aug 23, 12:35 PM CDT, 1 hour 35 minutes before
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</html>Hazardous weather outlook, Aug 23, 4:19 AM CDT, 9 hours 51 minutes before
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</html>In the hours before
Special weather statement, Aug 23, 2:00 PM CDT, 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 200 PM CDT THU AUG 23 2012 MNZ012-019-020-037-231915- CARLTON/SOUTH ST. LOUIS-CENTRAL ST. LOUIS-NORTHERN COOK/NORTHERN LAKE-SOUTHERN LAKE/NORTH SHORE- 200 PM CDT THU AUG 23 2012 ...A STRONG THUNDERSTORM IS INTENSIFYING NORTH OF DULUTH... AT 154 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 14 MILES SOUTHWEST OF WALES...MOVING EAST AT 25 MPH. THIS STORM IS CAPABLE OF PRODUCING HALF INCH DIAMETER HAIL...WIND GUSTS UP TO 40 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF HEAVY DOWNPOURS OF UP TO AN INCH OF RAINFALL IN A HALF HOUR... * THE THUNDERSTORM WILL BE NEAR... ALGER BY 215 PM... GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. LAT...LON 4707 9157 4699 9202 4718 9212 4729 9168 EOM
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 2:47 AM CDT | Special Weather Statement | DLH | Carlton | 58 min |
| Aug 23, 2:00 PM CDT | Special Weather Statement | DLH | Lake | 15 min |
| Aug 23, 2:45 PM CDT | Special Weather Statement | DLH | Crow Wing | 30 min |
| Aug 23, 2:56 PM CDT | Special Weather Statement | DLH | Lake | 19 min |
| Aug 23, 3:19 PM CDT | Special Weather Statement | DLH | Lake | 26 min |
| Aug 23, 3:31 PM CDT | Special Weather Statement | DLH | Aitkin | 29 min |
| Aug 23, 3:47 PM CDT | Special Weather Statement | DLH | Lake | 28 min |
| Aug 23, 3:57 PM CDT | Severe Thunderstorm Warning | DLH | Cook, Lake | 63 min |
| Aug 23, 4:52 PM CDT | Severe Thunderstorm Warning | DLH | Cook, Lake | 38 min |
| Aug 23, 5:37 PM CDT | Special Weather Statement | DLH | Cook | 38 min |
| Aug 23, 6:10 PM CDT | Severe Thunderstorm Warning | DLH | Cook, Lake | 65 min |
| Aug 23, 6:18 PM CDT | Special Weather Statement | DLH | Koochiching | 27 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2012Every severe thunderstorm warning in 2012
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.