Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 115, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Sep 6, 2015, 5:52 PM CDT for Aitkin County, Cass County, Crow Wing County, Minnesota. It was in force for 23 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 6, 2015, 5:52 PM CDT (22:52 UTC)
- Expired
- Sep 6, 2015, 6:15 PM CDT
- In force
- 23 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Aitkin County, MN, Cass County, MN, Crow Wing County, MN
The radar
The Duluth radar (KDLH), 133 km from the middle of the area, began a volume at 22:55 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 6, 3:42 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 10.9 hours before the alert went out and 205 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
- 394 J/kg
- Mixed-layer CIN
- -176 J/kg
- Mixed-layer LCL
- 1145 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 272 m²/s²
- 0-3 km storm-relative helicity
- 438 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 3.2
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 6, 3:11 PM CDT, 2 hours 41 minutes earlier.
Area forecast discussion, Sep 6, 3:11 PM CDT, 2 hours 41 minutes before
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</html>Hazardous weather outlook, Sep 6, 2:59 PM CDT, 2 hours 53 minutes before
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Special weather statement, Sep 6, 5:19 PM CDT, 33 minutes before
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</html>Special weather statement, Sep 6, 5:21 PM CDT, 31 minutes before
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</html>Local storm report, Sep 6, 5:30 PM CDT, 22 minutes before
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</html>Local storm report, Sep 6, 5:38 PM CDT, 14 minutes before
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</html>Special weather statement, Sep 6, 5:43 PM CDT, 9 minutes before
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</html>The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 7:54 PM CDT | Special Weather Statement | DLH | Crow Wing | 36 min |
| Sep 5, 8:50 PM CDT | Areal Flood Advisory | DLH | Aitkin, Cass, Crow Wing | 3 hr |
| Sep 5, 9:22 PM CDT | Special Weather Statement | DLH | Aitkin, Crow Wing | 23 min |
| Sep 5, 9:52 PM CDT | Special Weather Statement | DLH | Saint Louis | 23 min |
| Sep 5, 10:22 PM CDT | Special Weather Statement | DLH | Saint Louis | 23 min |
| Sep 5, 11:18 PM CDT | Special Weather Statement | DLH | Lake | 27 min |
| Sep 5, 11:33 PM CDT | Special Weather Statement | DLH | Crow Wing | 42 min |
| Sep 6, 1:00 AM CDT | Special Weather Statement | DLH | Itasca | 30 min |
| Sep 6, 1:27 AM CDT | Special Weather Statement | DLH | Cass, Crow Wing | 33 min |
| Sep 6, 1:34 AM CDT | Special Weather Statement | DLH | Itasca | 26 min |
| Sep 6, 2:46 AM CDT | Special Weather Statement | DLH | Crow Wing | 29 min |
| Sep 6, 3:47 AM CDT | Flash Flood Warning | DLH | Aitkin, Itasca, Saint Louis | 3 hr |
| Sep 6, 3:14 PM CDT | Special Weather Statement | DLH | Itasca | 16 min |
| Sep 6, 3:30 PM CDT | Special Weather Statement | DLH | Itasca | 15 min |
| Sep 6, 3:40 PM CDT | Severe Thunderstorm Warning | DLH | Itasca | 35 min |
| Sep 6, 3:47 PM CDT | Special Weather Statement | DLH | Cass | 13 min |
| Sep 6, 4:02 PM CDT | Special Weather Statement | DLH | Itasca | 13 min |
| Sep 6, 4:14 PM CDT | Special Weather Statement | DLH | Itasca | 16 min |
| Sep 6, 4:25 PM CDT | Special Weather Statement | DLH | Cass | 35 min |
| Sep 6, 4:32 PM CDT | Special Weather Statement | DLH | Itasca | 13 min |
| Sep 6, 4:46 PM CDT | Special Weather Statement | DLH | Itasca | 14 min |
| Sep 6, 4:56 PM CDT | Special Weather Statement | DLH | Crow Wing | 19 min |
| Sep 6, 5:03 PM CDT | Special Weather Statement | DLH | Saint Louis | 12 min |
| Sep 6, 5:17 PM CDT | Special Weather Statement | DLH | Wadena | 28 min |
| Sep 6, 5:19 PM CDT | Special Weather Statement | DLH | Saint Louis | 26 min |
| Sep 6, 5:21 PM CDT | Special Weather Statement | DLH | Saint Louis | 24 min |
| Sep 6, 5:37 PM CDT | Special Weather Statement | DLH | Cass | 23 min |
| Sep 6, 5:43 PM CDT | Special Weather Statement | DLH | Saint Louis | 17 min |
| Sep 6, 6:05 PM CDT | Special Weather Statement | DLH | Aitkin | 25 min |
| Sep 6, 6:08 PM CDT | Special Weather Statement | DLH | Lake | 22 min |
| Sep 6, 6:18 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin | 27 min |
| Sep 6, 6:33 PM CDT | Special Weather Statement | DLH | Lake | 12 min |
| Sep 6, 6:48 PM CDT | Special Weather Statement | DLH | Lake | 12 min |
| Sep 6, 6:50 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Carlton, Saint Louis | 25 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2015Every severe thunderstorm warning in 2015
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.