Alert archive / Minnesota / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 1, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Apr 30, 2013, 4:59 AM CDT for Carlton County, Saint Louis County, Minnesota. It was in force for 31 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
- Apr 30, 2013, 4:59 AM CDT (09:59 UTC)
- Expired
- Apr 30, 2013, 5:30 AM CDT
- In force
- 31 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Carlton County, MN, Saint Louis County, MN
The radar
The Duluth radar (KDLH), 39 km from the middle of the area, began a volume at 09:59 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
Minneapolis, MN (KMPX), launched 00:00Z, 10.0 hours before the alert went out and 262 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1968 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 181 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 Apr 30, 4:09 AM CDT, 50 minutes earlier.
Area forecast discussion, Apr 30, 4:09 AM CDT, 50 minutes before
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</html>Hazardous weather outlook, Apr 30, 4:32 AM CDT, 27 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DULUTH MN 432 AM CDT TUE APR 30 2013 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-011130- 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- 432 AM CDT TUE APR 30 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MINNESOTA AND NORTHWEST WISCONSIN. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS WILL CONTINUE ACROSS NORTHEAST MINNESOTA AND NORTHWEST WISCONSIN THIS MORNING. SOME OF THESE STORMS COULD PRODUCE SMALL HAIL AND LOCALLY HEAVY RAINFALL. THE RAINFALL COULD COMBINE WITH THE SNOW MELT AND INDUCE PONDING OF WATER ON ROADS AND CREATE OR ADD TO MINOR FLOODING IN LOW LYING AREAS. AREAS OF FOG WILL BE SEEN AROUND THE TWIN PORTS THIS MORNING...WITH VISIBILITIES DROPPING TO A HALF MILE OR LESS AT TIMES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY SIGNIFICANT PRECIPITATION WILL DEVELOP LATE TUESDAY NIGHT AND CONTINUE THROUGH AT LEAST THURSDAY AFTERNOON...MAINLY OVER NORTHWEST WISCONSIN...AND FAR EASTERN MINNESOTA. SIGNIFICANT SNOWFALL IS LOOKING MORE LIKELY LATE WEDNESDAY AND THURSDAY...BUT THE EXACT LOCATION IS STILL QUESTIONABLE. IN ADDITION TO THE SNOW THREAT...THE PRECIPITATION WILL ONLY ADD TO THE HIGH WATER AND FLOODING ISSUES OVER NORTHWEST WISCONSIN AND FAR EASTERN MINNESOTA. VARIOUS FLOOD WARNINGS AND ADVISORIES ARE IN EFFECT ACROSS THE NORTHLAND...WITH FLOOD WARNINGS FOR THE MISSISSIPPI RIVER AT FORT RIPLEY AND AITKIN. A FLOOD ADVISORY IS IN EFFECT ACROSS NORTHERN WISCONSIN...AND SECTIONS OF SOUTHERN SAINT LOUIS COUNTY...DUE TO WATER ON ROADS. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. ALSO...SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT CHANGES TO RIVER OR STREAM LEVELS NEAR THEM AND REPORT AND FLOODING OF ROADWAYS. LSZ121-140>148-011130- 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- 432 AM CDT TUE APR 30 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF WESTERN LAKE SUPERIOR. .DAY ONE...TODAY AND TONIGHT A FEW THUNDERSTORMS ARE POSSIBLE THIS MORNING ACROSS WESTERN LAKE SUPERIOR. THE MAIN THREAT WILL BE LOCALLY GUSTY WINDS AND SMALL HAIL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY 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, Apr 30, 4:02 AM CDT, 57 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 |
|---|---|---|---|---|
| Apr 29, 10:44 PM CDT | Areal Flood Advisory | DLH | Saint Louis | 24 hr |
| Apr 30, 4:02 AM CDT | Special Weather Statement | DLH | Aitkin | 13 min |
| Apr 30, 4:25 AM CDT | Special Weather Statement | DLH | Aitkin, Carlton | 35 min |
| Apr 30, 5:29 AM CDT | Special Weather Statement | DLH | Saint Louis | 46 min |
| Apr 30, 5:48 AM CDT | Special Weather Statement | DLH | Koochiching | 27 min |
| Apr 30, 5:52 AM CDT | Special Weather Statement | DLH | Lake | 23 min |
| Apr 30, 6:36 AM CDT | Special Weather Statement | DLH | Lake | 39 min |
| Apr 30, 7:07 AM CDT | Special Weather Statement | DLH | Koochiching | 23 min |
| Apr 30, 7:10 AM CDT | Special Weather Statement | DLH | Lake | 50 min |
| Apr 30, 7:38 AM CDT | Severe Thunderstorm Warning | DLH | Cook, Lake | 52 min |
| Apr 30, 7:40 AM CDT | Special Marine Warning | DLH | 65 min | |
| Apr 30, 8:33 AM CDT | Special Weather Statement | DLH | Cook | 42 min |
| Apr 30, 8:41 AM CDT | Special Marine Warning | DLH | 64 min | |
| Apr 30, 8:55 AM CDT | Severe Thunderstorm Warning | DLH | Cook | 50 min |
| Apr 30, 9:05 AM CDT | River Flood Warning | DLH | Carlton | 49 hr |
| Apr 30, 9:36 AM CDT | Special Marine Warning | DLH | 54 min | |
| Apr 30, 9:45 AM CDT | Severe Thunderstorm Warning | DLH | Cook | 45 min |
| Apr 30, 5:24 AM CDT | Special Weather Statement | DLH | Douglas | 21 min |
| Apr 30, 3:22 PM CDT | Winter Storm Watch | DLH | Ashland, Bayfield, Burnett, Douglas, Iron, Price and 2 more | 24 hr |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2013Every severe thunderstorm warning in 2013
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.