Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 93, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Jul 18, 2020, 11:46 PM CDT for Price County, Sawyer County, Wisconsin. It was in force for 29 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, 2020, 11:46 PM CDT (04:46 UTC)
- Expired
- Jul 19, 2020, 12:15 AM CDT
- In force
- 29 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Price County, WI, Sawyer County, WI
The radar
The Duluth radar (KDLH), 162 km from the middle of the area, began a volume at 04:49 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 |
|---|---|---|---|
| Jul 18, 3:53 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 4.8 hours before the alert went out and 245 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
- 3128 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 1246 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 6.5
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, 9:31 PM CDT, 2 hours 15 minutes earlier.
Area forecast discussion, Jul 18, 9:31 PM CDT, 2 hours 15 minutes before
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Hazardous Weather Outlook National Weather Service Duluth MN 105 PM CDT Sat Jul 18 2020 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-191815- 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- 105 PM CDT Sat Jul 18 2020 This Hazardous Weather Outlook is for portions of northeast Minnesota and northwest Wisconsin. .DAY ONE...This afternoon and Tonight Another round of severe thunderstorms is expected late this afternoon and evening. The greatest risk of severe weather is from the Brainerd, Mille Lacs, Hinckley and Cloquet areas into much of northwest Wisconsin. Large hail to around 2 inches in diameter, damaging winds to around 70 mph, a tornado or two, and flash flooding will all be possible with the storms. .DAYS TWO THROUGH SEVEN...Sunday through Friday A few thunderstorms will be possible Sunday, roughly along and north of US Highway 2 in northern Minnesota. These storms are not expected to be severe. There will be periodic chances for more thunderstorms from Monday into Friday with the highest chance on Tuesday. Strong storms are possible but widespread severe weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Skywarn spotters may be needed late this afternoon and evening. LSZ121-140>148-191815- 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- 105 PM CDT Sat Jul 18 2020 This Hazardous Weather Outlook is for portions of the Nearshore waters of western Lake Superior. .DAY ONE...This afternoon and Tonight Another round of strong to severe thunderstorms will be possible late this afternoon and evening. Large hail and damaging winds in excess of 55 knots are the main threats. The greatest threat is from the Twin Ports and across the South Shore. .DAYS TWO THROUGH SEVEN...Sunday through Friday Gusty west to northwest winds on Sunday may be strong enough along the South Shore to produce hazardous conditions for small craft. This would be most likely from Superior to Sand Island. A few thunderstorms will be possible Sunday afternoon along the North Shore. Severe storms are not expected. There will be several chances for more thunderstorms during the upcoming week. The highest chance of thunderstorms will be Tuesday afternoon and evening. While a few storms may be strong to severe, widespread severe weather is not anticipated at this time. PA 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 18, 10:38 PM CDT, 1 hour 8 minutes before
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</html>Local storm report, Jul 18, 10:42 PM CDT, 1 hour 4 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 18, 7:09 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 51 min |
| Jul 18, 7:21 PM CDT | Special Weather Statement | DLH | Carlton | 24 min |
| Jul 18, 7:35 PM CDT | Special Weather Statement | DLH | Carlton | 25 min |
| Jul 18, 7:49 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 11 min |
| Jul 18, 7:55 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 50 min |
| Jul 18, 7:56 PM CDT | Severe Thunderstorm Warning | DLH | Carlton, Pine | 49 min |
| Jul 18, 8:05 PM CDT | Special Marine Warning | DLH | 55 min | |
| Jul 18, 8:17 PM CDT | Special Weather Statement | DLH | Carlton | 13 min |
| Jul 18, 8:45 PM CDT | Severe Thunderstorm Warning | DLH | Carlton, Pine | 45 min |
| Jul 18, 8:50 PM CDT | Special Weather Statement | DLH | 40 min | |
| Jul 18, 8:55 PM CDT | Special Marine Warning | DLH | 35 min | |
| Jul 18, 9:23 PM CDT | Special Marine Warning | DLH | 37 min | |
| Jul 19, 12:27 AM CDT | Special Weather Statement | DLH | Cook | 18 min |
| Jul 19, 12:47 AM CDT | Severe Thunderstorm Warning | DLH | Cook | 13 min |
| Jul 19, 12:49 AM CDT | Special Marine Warning | DLH | 26 min | |
| Jul 19, 3:50 AM CDT | Small Craft Advisory | DLH | 18 hr | |
| Jul 18, 8:22 PM CDT | Special Weather Statement | DLH | Burnett | 23 min |
| Jul 18, 8:25 PM CDT | Special Weather Statement | DLH | Douglas | 35 min |
| Jul 18, 8:54 PM CDT | Special Weather Statement | DLH | Washburn | 36 min |
| Jul 18, 9:07 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield | 23 min |
| Jul 18, 9:27 PM CDT | Special Weather Statement | DLH | Bayfield, Douglas | 48 min |
| Jul 18, 9:29 PM CDT | Special Weather Statement | DLH | Washburn | 46 min |
| Jul 18, 9:29 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield | 31 min |
| Jul 18, 9:57 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield | 48 min |
| Jul 18, 10:16 PM CDT | Special Weather Statement | DLH | Ashland | 14 min |
| Jul 18, 10:33 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Iron | 30 min |
| Jul 18, 10:38 PM CDT | Special Weather Statement | DLH | Sawyer | 37 min |
| Jul 18, 11:15 PM CDT | Special Weather Statement | DLH | Sawyer | 30 min |
| Jul 18, 11:28 PM CDT | Special Weather Statement | DLH | Sawyer | 17 min |
| Jul 19, 12:12 AM CDT | Severe Thunderstorm Warning | DLH | Price | 19 min |
| Jul 19, 12:21 AM CDT | Special Weather Statement | DLH | Price | 9 min |
| Jul 19, 12:38 AM CDT | Special Weather Statement | DLH | Price | 22 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2020Every severe thunderstorm warning in 2020
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.