Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 91, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Aug 24, 2014, 9:23 PM CDT for Carlton County, Saint Louis County, Minnesota; Douglas County, Wisconsin. It was in force for 37 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 24, 2014, 9:23 PM CDT (02:23 UTC)
- Expired
- Aug 24, 2014, 10:00 PM CDT
- In force
- 37 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Carlton County, MN, Saint Louis County, MN, Douglas County, WI
The radar
The Duluth radar (KDLH), 11 km from the middle of the area, began a volume at 02:26 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 |
|---|---|---|---|
| Aug 24, 3:45 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 2.4 hours before the alert went out and 246 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
- 2425 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1141 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 234 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 14.7
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 24, 6:38 PM CDT, 2 hours 45 minutes earlier.
Area forecast discussion, Aug 24, 6:38 PM CDT, 2 hours 45 minutes before
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</html>Hazardous weather outlook, Aug 24, 2:49 PM CDT, 6 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE DULUTH MN 249 PM CDT SUN AUG 24 2014 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-251030- 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- 249 PM CDT SUN AUG 24 2014 ...SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MINNESOTA AND NORTHWEST WISCONSIN. .DAY ONE...THIS AFTERNOON AND TONIGHT CONDITIONS WILL BE FAVORABLE FOR RIP CURRENTS AROUND THE PARK POINT BEACH TODAY. THERE IS A HIGH RISK OF RIP CURRENTS. CHECK THE LATEST BEACH HAZARDS STATEMENT FOR DETAILS. THUNDERSTORMS ARE EXPECTED LATER THIS AFTERNOON AND THROUGH THE EVENING. THERE IS THE POTENTIAL FOR SEVERE WEATHER...WITH LARGE HAIL...DAMAGING WINDS AND EVEN A TORNADO OR TWO. THE CONVECTION IS EXPECTED TO INITIATE OVER NORTH CENTRAL MINNESOTA ALONG A COLD FRONT AND MOVE TO THE EAST THROUGH THE EVENING. BE SURE TO MONITOR THE WEATHER CONDITIONS THROUGH THE DAY...ESPECIALLY IF OUTDOOR ACTIVITIES ARE PLANNED. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION WILL LIKELY BE NEEDED LATE THIS AFTERNOON WEST OF HIGHWAY 169 IN MINNESOTA...AND AROUND THE TWIN PORTS AND INTO NORTHWEST WISCONSIN BY EVENING. LSZ121-140>148-251030- 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- 249 PM CDT SUN AUG 24 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF WESTERN LAKE SUPERIOR. .DAY ONE...THIS AFTERNOON AND TONIGHT GUSTY NORTHEAST WINDS AROUND THE HEAD OF WESTERN LAKE SUPERIOR WILL CREATE HAZARDOUS CONDITIONS FOR SMALL CRAFTS THIS EVENING. A SMALL CRAFT ADVISORY IS IN EFFECT. CHECK THE LATEST NEAR SHORE MARINE FORECAST FOR DETAILS. SCATTERED THUNDERSTORMS ARE POSSIBLE ALONG THE NORTH SHORE THIS EVENING...AND SPREAD TO THE EAST ALONG THE SOUTH SHORE AND INTO CENTRAL LAKE SUPERIOR TONIGHT. SOME OF THE STORMS MAY BE SEVERE WITH LARGE HAIL...DAMAGING WINDS AND HEAVY RAIN. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. TENTINGER 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 24, 8:38 PM CDT, 45 minutes before
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</html>Local storm report, Aug 24, 9:23 PM CDT, 0 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 24, 7:07 PM CDT | Special Weather Statement | DLH | Koochiching | 23 min |
| Aug 24, 7:08 PM CDT | Special Weather Statement | DLH | Aitkin | 37 min |
| Aug 24, 7:13 PM CDT | Special Weather Statement | DLH | Aitkin | 32 min |
| Aug 24, 7:16 PM CDT | Special Weather Statement | DLH | Itasca | 29 min |
| Aug 24, 7:26 PM CDT | Areal Flood Advisory | DLH | Aitkin, Cass, Crow Wing, Itasca | 12 hr |
| Aug 24, 7:32 PM CDT | Special Weather Statement | DLH | Koochiching | 28 min |
| Aug 24, 7:42 PM CDT | Severe Thunderstorm Warning | DLH | Itasca, Saint Louis | 43 min |
| Aug 24, 7:47 PM CDT | Special Weather Statement | DLH | Aitkin | 13 min |
| Aug 24, 7:49 PM CDT | Special Weather Statement | DLH | Aitkin | 26 min |
| Aug 24, 7:58 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin | 32 min |
| Aug 24, 8:00 PM CDT | Special Weather Statement | DLH | Carlton | 30 min |
| Aug 24, 8:12 PM CDT | Special Weather Statement | DLH | Carlton | 33 min |
| Aug 24, 8:28 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 32 min |
| Aug 24, 8:38 PM CDT | Special Weather Statement | DLH | Pine | 12 min |
| Aug 24, 8:43 PM CDT | Special Weather Statement | DLH | Carlton | 32 min |
| Aug 24, 8:59 PM CDT | Areal Flood Advisory | DLH | Aitkin, Carlton, Pine, Saint Louis | 8 hr |
| Aug 24, 8:59 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 26 min |
| Aug 24, 9:01 PM CDT | Special Weather Statement | DLH | Carlton | 14 min |
| Aug 24, 9:16 PM CDT | Special Marine Warning | DLH | 44 min | |
| Aug 24, 9:23 PM CDT | Special Weather Statement | DLH | Koochiching | 37 min |
| Aug 24, 9:24 PM CDT | Special Weather Statement | DLH | 36 min | |
| Aug 24, 9:38 PM CDT | Special Weather Statement | DLH | Lake | 37 min |
| Aug 24, 9:47 PM CDT | Special Marine Warning | DLH | 43 min | |
| Aug 24, 10:19 PM CDT | Special Weather Statement | DLH | Lake | 26 min |
| Aug 24, 10:23 PM CDT | Special Marine Warning | DLH | 37 min | |
| Aug 24, 10:46 PM CDT | Special Marine Warning | DLH | 44 min | |
| Aug 24, 11:00 PM CDT | Special Marine Warning | DLH | 45 min | |
| Aug 24, 11:08 PM CDT | Special Weather Statement | DLH | Cook | 37 min |
| Aug 24, 11:31 PM CDT | Special Marine Warning | DLH | 59 min | |
| Aug 24, 11:41 PM CDT | Special Marine Warning | DLH | 49 min | |
| Aug 24, 11:47 PM CDT | Special Weather Statement | DLH | Cook | 13 min |
| Aug 25, 12:02 AM CDT | Special Weather Statement | DLH | Cook | 13 min |
| Aug 25, 12:22 AM CDT | Special Weather Statement | DLH | Cook | 8 min |
| Aug 25, 2:13 PM CDT | Small Craft Advisory | DLH | 6 hr | |
| Aug 24, 10:02 PM CDT | Severe Thunderstorm Warning | DLH | Bayfield, Douglas | 43 min |
| Aug 24, 10:30 PM CDT | Special Weather Statement | DLH | Douglas | 15 min |
| Aug 24, 10:49 PM CDT | Special Weather Statement | DLH | Bayfield | 21 min |
| Aug 24, 11:05 PM CDT | Special Weather Statement | DLH | Bayfield | 25 min |
| Aug 24, 11:45 PM CDT | Special Weather Statement | DLH | Ashland, Bayfield, Iron, Sawyer | 60 min |
| Aug 25, 12:00 AM CDT | Areal Flood Advisory | DLH | Ashland, Bayfield, Burnett, Douglas, Iron, Sawyer and 1 more | 4 hr |
| Aug 25, 12:29 AM CDT | Special Weather Statement | DLH | Price | 61 min |
| Aug 25, 12:36 AM CDT | Special Weather Statement | DLH | Ashland | 24 min |
| Aug 25, 12:42 AM CDT | Flash Flood Warning | DLH | Ashland, Bayfield, Douglas | 3 hr |
| Aug 25, 1:27 AM CDT | Special Weather Statement | DLH | Iron, Price | 48 min |
| Aug 25, 1:36 AM CDT | Areal Flood Advisory | DLH | Ashland, Iron | 3 hr |
| Aug 25, 1:59 AM CDT | Special Weather Statement | DLH | Price | 31 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2014Severe Thunderstorm Warnings in Wisconsin, 2014Every severe thunderstorm warning in 2014
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.