Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 111, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Aug 28, 2015, 8:23 PM CDT for Saint Louis County, Minnesota. It was in force for 2 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 28, 2015, 8:23 PM CDT (01:23 UTC)
- Expired
- Aug 28, 2015, 8:25 PM CDT
- In force
- 2 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Saint Louis County, MN
The radar
The Duluth radar (KDLH), 86 km from the middle of the area, began a volume at 01:25 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, 1.4 hours before the alert went out and 126 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
- 2602 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1024 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 2.8
- Supercell composite
- 15.8
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 28, 7:03 PM CDT, 1 hour 20 minutes earlier.
Area forecast discussion, Aug 28, 7:03 PM CDT, 1 hour 20 minutes before
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</html>Hazardous weather outlook, Aug 28, 5:03 PM CDT, 3 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE DULUTH MN 503 PM CDT FRI AUG 28 2015 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-291430- 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- 503 PM CDT FRI AUG 28 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MINNESOTA AND NORTHWEST WISCONSIN. .DAY ONE...TONIGHT THUNDERSTORMS WILL BE SCATTERED OVER NORTHEAST MINNESOTA AND POSSIBLY FAR NORTHWEST WISCONSIN THIS EVENING. SOME OF THE STORMS IN NORTHERN MINNESOTA MAY CONTAIN SOME HAIL AND STRONG WINDS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS ARE POSSIBLE MOST EVERY DAY NEXT WEEK...EXCEPT FOR SUNDAY. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS MAY BE NEEDED THIS EVENING...ESPECIALLY IN NORTHERN MINNESOTA. LSZ121-140>148-291430- 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- 503 PM CDT FRI AUG 28 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE NEARSHORE WATERS OF WESTERN LAKE SUPERIOR. .DAY ONE...TONIGHT THUNDERSTORMS WILL BE SCATTERED OVER LAKE SUPERIOR THIS EVENING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS ARE POSSIBLE MOST EVERY DAY NEXT WEEK...EXCEPT FOR SUNDAY. CLC MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB ADDRESS: HTTP://WWW.WEATHER.GOV/DULUTH (ALL LOWER CASE)
In the hours before
Special weather statement, Aug 28, 3:05 PM CDT, 5 hours 18 minutes before
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</html>Special weather statement, Aug 28, 7:16 PM CDT, 1 hour 7 minutes before
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</html>Special weather statement, Aug 28, 7:46 PM CDT, 37 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 |
|---|---|---|---|---|
| Aug 28, 7:16 PM CDT | Special Weather Statement | DLH | Koochiching | 29 min |
| Aug 28, 7:46 PM CDT | Special Weather Statement | DLH | 29 min | |
| Aug 28, 7:53 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 37 min |
| Aug 28, 8:38 PM CDT | Special Weather Statement | DLH | 37 min | |
| Aug 28, 8:56 PM CDT | Special Weather Statement | DLH | 19 min | |
| Aug 28, 9:17 PM CDT | Special Weather Statement | DLH | Cook | 28 min |
| Aug 28, 9:40 PM CDT | Special Weather Statement | DLH | 35 min | |
| Aug 28, 9:43 PM CDT | Special Weather Statement | DLH | 32 min | |
| Aug 28, 9:51 PM CDT | Special Weather Statement | DLH | Cook | 24 min |
| Aug 28, 10:01 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 29 min |
| Aug 28, 10:21 PM CDT | Special Weather Statement | DLH | Cook | 24 min |
| Aug 28, 10:29 PM CDT | Severe Thunderstorm Warning | DLH | Cook, Lake | 31 min |
| Aug 28, 10:42 PM CDT | Special Weather Statement | DLH | Cook | 48 min |
| Aug 28, 11:04 PM CDT | Special Weather Statement | DLH | Lake | 41 min |
| Aug 28, 11:28 PM CDT | Special Weather Statement | DLH | Cook | 32 min |
| Aug 29, 12:15 AM CDT | Special Weather Statement | DLH | 30 min | |
| Aug 29, 12:29 AM CDT | Areal Flood Advisory | DLH | Lake, Saint Louis | 3 hr |
| Aug 29, 12:45 AM CDT | Special Weather Statement | DLH | 30 min | |
| Aug 29, 1:15 AM CDT | Special Weather Statement | DLH | Lake | 15 min |
| Aug 29, 1:29 AM CDT | Flash Flood Warning | DLH | Lake, Saint Louis | 3 hr |
| Aug 29, 1:29 AM CDT | Special Weather Statement | DLH | Lake | 16 min |
| Aug 29, 1:47 AM CDT | Special Weather Statement | DLH | Lake | 28 min |
| Aug 29, 2:09 AM CDT | Special Weather Statement | DLH | Lake | 36 min |
| Aug 29, 2:15 AM CDT | Areal Flood Advisory | DLH | Cook | 3 hr |
| Aug 29, 2:42 AM CDT | Special Weather Statement | DLH | Lake | 33 min |
| Aug 29, 3:16 AM CDT | Special Weather Statement | DLH | Saint Louis | 44 min |
| Aug 29, 3:58 AM CDT | Special Weather Statement | DLH | Bayfield | 32 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.