Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 128, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Jul 16, 2011, 2:19 PM CDT for Itasca County, Koochiching County, Minnesota. It was in force for 56 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
- Jul 16, 2011, 2:19 PM CDT (19:19 UTC)
- Expired
- Jul 16, 2011, 3:15 PM CDT
- In force
- 56 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Itasca County, MN, Koochiching County, MN
The radar
The Duluth radar (KDLH), 162 km from the middle of the area, began a volume at 19:19 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, 7.3 hours before the alert went out and 83 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
- 1350 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 563 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.3
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 Jul 16, 1:37 PM CDT, 42 minutes earlier.
Area forecast discussion, Jul 16, 1:37 PM CDT, 42 minutes before
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</html>Hazardous weather outlook, Jul 16, 4:08 AM CDT, 10 hours 11 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DULUTH MN 408 AM CDT SAT JUL 16 2011 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-171030- 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- 408 AM CDT SAT JUL 16 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MINNESOTA AND NORTHWEST WISCONSIN. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS WILL BE POSSIBLE OVER PORTIONS OF THE NORTHLAND TODAY AND TONIGHT. THE STORMS MAY BE SEVERE TONIGHT OVER FAR NORTHERN MINNESOTA WITH LARGE HAIL...DAMAGING WINDS AND HEAVY RAIN THE MAIN THREATS. HOT AND HUMID CONDITIONS WILL OCCUR OVER A GOOD PORTION OF THE NORTHLAND TODAY...WITH THE HIGHEST HEAT INDICES OVER PORTIONS OF NORTHWEST WISCONSIN BACK INTO THE BRAINERD LAKES...AND NORTH TO INTERNATIONAL FALLS. VARIOUS HEAT ADVISORIES AND EXCESSIVE HEAT WARNINGS ARE IN EFFECT. SEE THE LATEST WEATHER MESSAGE FOR FURTHER INFORMATION. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SEVERE STORMS WILL BE POSSIBLE OVER MUCH OF THE NORTHLAND SUNDAY INTO SUNDAY NIGHT. LARGE HAIL...DAMAGING WINDS AND HEAVY RAIN WILL BE THE MAIN THREATS. A TORNADO IS ALSO POSSIBLE SUNDAY AFTERNOON AND EVENING. MORE THUNDERSTORMS ARE POSSIBLE PERIODICALLY FROM MONDAY THROUGH NEXT FRIDAY. IT'S TOO EARLY TO DETERMINE WHAT PERIOD WILL SEE SEVERE STORMS...BUT SOME STORMS WILL BE SEVERE DUE TO THE EXCESSIVE HEAT AND HUMIDITY. VERY HOT AND HUMID CONDITIONS WILL CONTINUE THROUGH AT LEAST THE MIDDLE OF NEXT WEEK OVER MUCH OF THE NORTHLAND WITH HIGHS IN THE UPPER EIGHTIES TO MIDDLE NINETIES AND HIGH HUMIDITY. VARIOUS EXCESSIVE HEAT WATCHES...WARNINGS AND ADVISORIES ARE IN EFFECT. SEE THE LATEST WEATHER MESSAGE FOR FURTHER INFORMATION. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION MAY BE NEEDED TONIGHT...AND MAINLY OVER FAR NORTHERN MINNESOTA. LSZ121-140>148-171030- 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- 408 AM CDT SAT JUL 16 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF WESTERN LAKE SUPERIOR. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE POSSIBLE OVER LAKE SUPERIOR. SOME SEVERE STORMS ARE POSSIBLE TONIGHT. FOG WILL BE POSSIBLE THIS MORNING...SOME LOCALLY DENSE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THUNDERSTORMS WILL BE POSSIBLE PERIODICALLY THROUGH THE PERIOD...WITH SOME SEVERE. MELDE 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, Jul 16, 8:42 AM CDT, 5 hours 37 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 842 AM CDT SAT JUL 16 2011 WIZ009-161615- PRICE- INCLUDING THE CITY OF...PHILLIPS 842 AM CDT SAT JUL 16 2011 ...HEAVY RAIN WILL CONTINUE TO FALL FROM PHILLIPS ON SOUTH... HEAVY RAIN...FROM NEARBY THUNDERSTORMS...WILL CONTINUE TO FALL ACROSS THE SOUTHERN HALF OF PRICE COUNTY...FROM PHILLIPS SOUTH LATE THIS MORNING. RAINFALLS WILL GENERALLY BE A HALF INCH AN HOUR...WITH A FEW AREAS BRIEFLY RECEIVING UP TO AN INCH OF RAINFALL AN HOUR. ONE OR TWO CLAPS OF THUNDER MAY BE HEARD. EOM
Special weather statement, Jul 16, 1:22 PM CDT, 57 minutes before
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</html>Special weather statement, Jul 16, 1:55 PM CDT, 24 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 |
|---|---|---|---|---|
| Jul 16, 3:46 AM CDT | Heat Advisory | DLH | Carlton, Cook, Itasca, Koochiching, Lake, Saint Louis | 5 days |
| Jul 16, 1:55 PM CDT | Special Weather Statement | DLH | Koochiching | 65 min |
| Jul 16, 3:09 PM CDT | Special Weather Statement | DLH | Koochiching | 66 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2011Every severe thunderstorm warning in 2011
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.