Alert archive / Minnesota / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 71, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Jul 18, 2019, 1:54 AM CDT for Cook County, Minnesota. It was in force for 22 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 18, 2019, 1:54 AM CDT (06:54 UTC)
- Expired
- Jul 18, 2019, 2:16 AM CDT
- In force
- 22 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Cook County, MN
The radar
The Duluth radar (KDLH), 166 km from the middle of the area, began a volume at 06:55 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, 6.9 hours before the alert went out and 221 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
- 1525 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 757 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 216 m²/s²
- 0-3 km storm-relative helicity
- 284 m²/s²
- Significant tornado parameter
- 2.4
- Supercell composite
- 12.5
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 18, 12:47 AM CDT, 1 hour 7 minutes earlier.
Area forecast discussion, Jul 18, 12:47 AM CDT, 1 hour 7 minutes before
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Hazardous Weather Outlook National Weather Service Duluth MN 418 PM CDT Wed Jul 17 2019 MNZ037-WIZ001-182130- Carlton/South St. Louis-Douglas- 418 PM CDT Wed Jul 17 2019 This Hazardous Weather Outlook is for portions of northeast Minnesota and northwest Wisconsin. .DAY ONE...This afternoon and Tonight Strong northeast winds will increase the threat of rip currents today through this evening for areas near the Twin Ports, including the beaches of Duluth and Superior. A Beach Hazards Statement has been issued for these areas. There is a chance for strong to severe thunderstorms across northeast Minnesota and across northwest Wisconsin late this afternoon into this evening. If storms develop, some will be capable of producing large hail and damaging winds. A tornado cannot be ruled out either, especially across north-central Minnesota. Storms will also produce heavy rainfall rates, especially as they move across east- central Minnesota into northwest Wisconsin tonight, which may lead to flash flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Several rounds of thunderstorms are possible Friday through Monday. Warm and humid conditions will continue Friday with heat indices in the 90 to 100 degree range. Thunderstorm chances, both in the Northland and in areas to our southwest and south, may limit the heating Friday. .SPOTTER INFORMATION STATEMENT... Skywarn spotters may be needed today and tonight. MNZ010>012-018>021-025-026-033>036-038-WIZ002>004-006>009-182130- 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-Pine-Bayfield-Ashland-Iron- Burnett-Washburn-Sawyer-Price- 418 PM CDT Wed Jul 17 2019 This Hazardous Weather Outlook is for portions of northeast Minnesota and northwest Wisconsin. .DAY ONE...This afternoon and Tonight There is a chance for strong to severe thunderstorms across northeast Minnesota and across northwest Wisconsin late this afternoon into this evening. If storms develop, some will be capable of producing large hail and damaging winds. A tornado cannot be ruled out either, especially across north-central Minnesota. Storms will also produce heavy rainfall rates, especially as they move across east-central Minnesota into northwest Wisconsin tonight, which may lead to flash flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Several rounds of thunderstorms are possible Friday through Monday. Warm and humid conditions will continue Friday with heat indices in the 90 to 100 degree range. Thunderstorm chances, both in the Northland and in areas to our southwest and south, may limit the heating Friday. .SPOTTER INFORMATION STATEMENT... Skywarn spotters may be needed today and tonight. LSZ121-140>148-182130- 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- 418 PM CDT Wed Jul 17 2019 This Hazardous Weather Outlook is for portions of the Nearshore waters of western Lake Superior. .DAY ONE...This afternoon and Tonight Small Craft Advisory continues into this evening. Strong to severe thunderstorms are possible late this evening and overnight. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Several additional rounds of thunderstorms are possible Friday through Sunday evening. JJM/Huyck 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 17, 11:05 PM CDT, 2 hours 49 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 17, 7:07 PM CDT | Tornado Warning | DLH | Koochiching | 23 min |
| Jul 17, 7:15 PM CDT | Severe Thunderstorm Warning | DLH | Itasca, Koochiching, Saint Louis | 30 min |
| Jul 17, 7:30 PM CDT | Tornado Warning | DLH | Koochiching, Saint Louis | 45 min |
| Jul 17, 7:45 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 30 min |
| Jul 17, 8:07 PM CDT | Tornado Warning | DLH | Saint Louis | 23 min |
| Jul 17, 8:10 PM CDT | Severe Thunderstorm Warning | DLH | Koochiching, Saint Louis | 50 min |
| Jul 17, 8:18 PM CDT | Severe Thunderstorm Warning | DLH | Koochiching, Saint Louis | 27 min |
| Jul 17, 8:29 PM CDT | Tornado Warning | DLH | Saint Louis | 46 min |
| Jul 17, 8:40 PM CDT | Special Weather Statement | DLH | Cook | 35 min |
| Jul 17, 8:56 PM CDT | Special Weather Statement | DLH | Cook | 19 min |
| Jul 17, 9:01 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 44 min |
| Jul 17, 9:13 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 47 min |
| Jul 17, 9:20 PM CDT | Special Weather Statement | DLH | Cook | 10 min |
| Jul 17, 9:32 PM CDT | Special Marine Warning | DLH | 58 min | |
| Jul 17, 9:35 PM CDT | Special Weather Statement | DLH | Cook | 10 min |
| Jul 17, 9:47 PM CDT | Special Weather Statement | DLH | Cook | 13 min |
| Jul 17, 9:56 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 64 min |
| Jul 17, 10:03 PM CDT | Special Weather Statement | DLH | Cook | 12 min |
| Jul 17, 10:12 PM CDT | Special Weather Statement | DLH | 18 min | |
| Jul 17, 10:19 PM CDT | Special Weather Statement | DLH | 11 min | |
| Jul 17, 10:33 PM CDT | Special Weather Statement | DLH | 27 min | |
| Jul 17, 11:03 PM CDT | Special Weather Statement | DLH | Lake | 27 min |
| Jul 17, 11:05 PM CDT | Special Weather Statement | DLH | Cook | 25 min |
| Jul 17, 11:34 PM CDT | Severe Thunderstorm Warning | DLH | Cook, Lake | 41 min |
| Jul 18, 12:19 AM CDT | Special Weather Statement | DLH | Cook | 26 min |
| Jul 18, 12:23 AM CDT | Special Marine Warning | DLH | 37 min | |
| Jul 18, 12:46 AM CDT | Special Weather Statement | DLH | Cook | 29 min |
| Jul 18, 1:13 AM CDT | Special Weather Statement | DLH | Cook | 32 min |
| Jul 18, 1:46 AM CDT | Special Weather Statement | DLH | Cook | 29 min |
| Jul 18, 1:57 AM CDT | Special Marine Warning | DLH | 24 min | |
| Jul 18, 11:21 AM CDT | Special Weather Statement | DLH | Carlton | 9 min |
| Jul 18, 11:51 AM CDT | Severe Thunderstorm Warning | DLH | Carlton, Pine | 24 min |
| Jul 18, 3:49 PM CDT | Special Marine Warning | DLH | 26 min | |
| Jul 18, 4:11 PM CDT | Special Marine Warning | DLH | 19 min | |
| Jul 18, 7:15 AM CDT | Special Weather Statement | DLH | Burnett, Douglas, Washburn | 30 min |
| Jul 18, 7:41 AM CDT | Special Weather Statement | DLH | Bayfield, Douglas, Washburn | 34 min |
| Jul 18, 8:11 AM CDT | Special Weather Statement | DLH | Bayfield | 34 min |
| Jul 18, 8:51 AM CDT | Special Weather Statement | DLH | Price | 24 min |
| Jul 18, 9:31 AM CDT | Special Weather Statement | DLH | Price | 29 min |
| Jul 18, 12:08 PM CDT | Severe Thunderstorm Warning | DLH | Douglas | 52 min |
| Jul 18, 12:35 PM CDT | Special Weather Statement | DLH | Washburn | 10 min |
| Jul 18, 2:31 PM CDT | Tornado Warning | DLH | Bayfield, Douglas | 16 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2019Every severe thunderstorm warning in 2019
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.