Alert archive / Minnesota / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 114, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Jul 21, 2016, 12:09 AM CDT for Koochiching County, Minnesota. It was in force for 66 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 21, 2016, 12:09 AM CDT (05:09 UTC)
- Expired
- Jul 21, 2016, 1:15 AM CDT
- In force
- 66 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Koochiching County, MN
The radar
The Duluth radar (KDLH), 196 km from the middle of the area, began a volume at 05:11 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, 5.2 hours before the alert went out and 51 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
- 2808 J/kg
- Mixed-layer CIN
- -129 J/kg
- Mixed-layer LCL
- 915 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
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 Jul 20, 7:11 PM CDT, 4 hours 58 minutes earlier.
Area forecast discussion, Jul 20, 7:11 PM CDT, 4 hours 58 minutes before
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</html>Hazardous weather outlook, Jul 20, 3:47 PM CDT, 8 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DULUTH MN 347 PM CDT WED JUL 20 2016 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-211300- KOOCHICHING-NORTH ST. LOUIS-NORTHERN COOK/NORTHERN LAKE- NORTH ITASCA-CENTRAL ST. LOUIS-SOUTHERN LAKE/NORTH SHORE- SOUTHERN COOK/NORTH SHORE-NORTH CASS-SOUTH ITASCA-SOUTH CASS- CROW WING-NORTHERN AITKIN-SOUTH AITKIN-CARLTON/SOUTH ST. LOUIS- PINE-DOUGLAS-BAYFIELD-ASHLAND-IRON-BURNETT-WASHBURN-SAWYER-PRICE- 347 PM CDT WED JUL 20 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MINNESOTA AND NORTHWEST WISCONSIN. .DAY ONE...THIS AFTERNOON AND TONIGHT DANGEROUSLY HOT CONDITIONS WILL CONTINUE ACROSS MUCH OF THE NORTHLAND OVERNIGHT. HIGH HUMIDITY VALUES AND OVERNIGHT LOW TEMPERATURES IN THE UPPER 60S TO UPPER 70S WILL PROVIDE LITTLE RELIEF. PLEASE REFER TO THE LATEST HEAT ADVISORY PRODUCTS FOR ADDITIONAL DETAILS. THUNDERSTORMS ARE EXPECTED TO DEVELOP IN WESTERN NORTH DAKOTA THIS AFTERNOON AND ADVANCE EASTWARD INTO THE NORTHLAND LATE TONIGHT. SOME OF THE STORMS MAY BE SEVERE WITH DAMAGING WINDS AND HEAVY RAINFALL THE GREATEST THREATS. THE MOST VIGOROUS STORMS WILL BE CAPABLE OF PRODUCING LARGE HAIL. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY IT WILL BE HOT AND HUMID ONCE AGAIN ON THURSDAY. TEMPERATURES ARE EXPECTED TO CLIMB WELL INTO THE 80S AND LOW 90S WITH HEAT INDEX VALUES FROM 95 TO 105 EXPECTED. PLEASE REFER TO THE LATEST HEAT ADVISORY PRODUCTS FOR ADDITIONAL DETAILS. THERE IS A CHANCE STRONG TO POSSIBLY SEVERE THUNDERSTORMS FROM THE OVERNIGHT PERIOD WILL LINGER INTO THURSDAY MORNING. THE GREATEST THREAT FROM THESE STORMS WILL BE TORRENTIAL RAINFALL AND DAMAGING WIND GUSTS. A FEW OF THE MORE VIGOROUS STORMS WOULD SUPPORT LARGE HAIL. STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE AGAIN SATURDAY AND SATURDAY NIGHT. THE MAIN THREAT WILL ONCE AGAIN BE DAMAGING WINDS AND TORRENTIAL RAINFALL...WITH A SECONDARY THREAT OF LARGE HAIL. ADDITIONAL THUNDERSTORM CHANCES RETURN MONDAY NIGHT THROUGH THE MIDDLE OF NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS MAY BE NEEDED LATE TONIGHT AND EARLY THURSDAY MORNING. LSZ121-140>148-211300- 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- 347 PM CDT WED JUL 20 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE NEARSHORE WATERS OF WESTERN LAKE SUPERIOR. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A CHANCE OF THUNDERSTORMS LATE OVERNIGHT OVER WESTERN LAKE SUPERIOR. SOME OF THE STORMS MAY BE STRONG TO SEVERE WITH WIND GUSTS GREATER THAN 30 KNOTS...FREQUENT CLOUD TO WATER LIGHTNING...LARGE HAIL...AND TORRENTIAL RAINFALL. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY SEVERAL ROUNDS OF THUNDERSTORMS WILL AFFECT WESTERN LAKE SUPERIOR THROUGH THE PERIOD. THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING BRIEF GUSTY WINDS TO 30 KNOTS...SMALL HAIL...FREQUENT CLOUD TO WATER LIGHTNING...AND HEAVY RAINFALL. HUYCK MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB ADDRESS: HTTP://WWW.WEATHER.GOV/DULUTH (ALL LOWER CASE)
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 1:03 AM CDT | Severe Thunderstorm Warning | DLH | Cass, Itasca | 57 min |
| Jul 21, 1:13 AM CDT | Severe Thunderstorm Warning | DLH | Koochiching, Saint Louis | 62 min |
| Jul 21, 1:34 AM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Cass, Crow Wing | 41 min |
| Jul 21, 2:01 AM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Cass, Itasca, Koochiching, Saint Louis | 59 min |
| Jul 21, 2:14 AM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Carlton, Crow Wing, Pine | 61 min |
| Jul 21, 2:17 AM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 58 min |
| Jul 21, 3:00 AM CDT | Severe Thunderstorm Warning | DLH | Carlton, Saint Louis | 60 min |
| Jul 21, 3:05 AM CDT | Special Weather Statement | DLH | Carlton, Pine | 40 min |
| Jul 21, 3:11 AM CDT | Special Marine Warning | DLH | 34 min | |
| Jul 21, 3:13 AM CDT | Special Marine Warning | DLH | 47 min | |
| Jul 21, 3:14 AM CDT | Severe Thunderstorm Warning | DLH | Cook, Lake | 46 min |
| Jul 21, 3:37 AM CDT | Special Marine Warning | DLH | 38 min | |
| Jul 21, 3:41 AM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 46 min |
| Jul 21, 3:50 AM CDT | Severe Thunderstorm Warning | DLH | Carlton, Pine | 40 min |
| Jul 21, 3:53 AM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 18 min |
| Jul 21, 3:56 AM CDT | Special Marine Warning | DLH | 49 min | |
| Jul 21, 3:59 AM CDT | Severe Thunderstorm Warning | DLH | Cook | 61 min |
| Jul 21, 4:11 AM CDT | Special Marine Warning | DLH | 49 min | |
| Jul 21, 4:45 AM CDT | Special Marine Warning | DLH | 30 min | |
| Jul 21, 4:53 AM CDT | Special Marine Warning | DLH | 37 min | |
| Jul 21, 4:05 AM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield, Douglas | 55 min |
| Jul 21, 4:32 AM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield, Burnett, Douglas, Sawyer, Washburn | 43 min |
| Jul 21, 4:41 AM CDT | Severe Thunderstorm Warning | DLH | Ashland, Iron | 49 min |
| Jul 21, 4:57 AM CDT | Severe Thunderstorm Warning | DLH | Ashland, Iron, Price, Sawyer | 63 min |
| Jul 21, 6:03 AM CDT | Special Weather Statement | DLH | Price | 12 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2016Every severe thunderstorm warning in 2016
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.