Alert archive / Minnesota / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 71, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Jul 13, 2020, 11:10 PM CDT for Aitkin County, Itasca County, Saint Louis County, Minnesota. It was in force for 50 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 13, 2020, 11:10 PM CDT (04:10 UTC)
- Expired
- Jul 14, 2020, 12:00 AM CDT
- In force
- 50 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Aitkin County, MN, Itasca County, MN, Saint Louis County, MN
The radar
The Duluth radar (KDLH), 85 km from the middle of the area, began a volume at 04:12 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 13, 6:18 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 4.2 hours before the alert went out and 149 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
- 1509 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 223 m²/s²
- 0-3 km storm-relative helicity
- 314 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 Jul 13, 10:13 PM CDT, 57 minutes earlier.
Area forecast discussion, Jul 13, 10:13 PM CDT, 57 minutes before
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</html>Hazardous weather outlook, Jul 13, 2:47 PM CDT, 8 hours 23 minutes before
Hazardous Weather Outlook National Weather Service Duluth MN 247 PM CDT Mon Jul 13 2020 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-142000- 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- 247 PM CDT Mon Jul 13 2020 This Hazardous Weather Outlook is for portions of northeast Minnesota and northwest Wisconsin. .DAY ONE...This afternoon and Tonight Strong to severe thunderstorms are expected tonight. The main threats are for large hail, damaging wind gusts, isolated tornadoes, and heavy rainfall, which may lead to localized flash flooding. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Thunderstorms are possible Friday through Sunday. A few storms may be strong to severe. .SPOTTER INFORMATION STATEMENT... Skywarn spotters are encouraged to report hail of any size and rainfall amounts to the National Weather Service. LSZ121-140>148-142000- 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- 247 PM CDT Mon Jul 13 2020 This Hazardous Weather Outlook is for portions of the Nearshore waters of western Lake Superior. .DAY ONE...This afternoon and Tonight Strong to severe thunderstorms may move over western Lake Superior after 9 PM tonight. The main threats are wind gusts of 40 knots or greater and large hail. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Strong to severe storms are possible for the South Shore waters Tuesday afternoon and early evening. There will be additional chances of thunderstorms Friday through Sunday. Wolfe More information may be obtained at the following web address: http://www.weather.gov/duluth (all lower case)
In the hours before
Local storm report, Jul 13, 9:55 PM CDT, 1 hour 15 minutes before
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</html>Special weather statement, Jul 13, 10:21 PM CDT, 49 minutes before
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</html>Special weather statement, Jul 13, 10:30 PM CDT, 40 minutes before
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</html>Local storm report, Jul 13, 10:55 PM CDT, 15 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 13, 8:17 PM CDT | Special Weather Statement | DLH | Cass | 13 min |
| Jul 13, 8:39 PM CDT | Severe Thunderstorm Warning | DLH | Cass, Itasca | 51 min |
| Jul 13, 8:57 PM CDT | Special Weather Statement | DLH | Itasca | 18 min |
| Jul 13, 9:28 PM CDT | Special Weather Statement | DLH | Cass | 17 min |
| Jul 13, 9:30 PM CDT | Special Weather Statement | DLH | Wadena | 15 min |
| Jul 13, 9:31 PM CDT | Special Weather Statement | DLH | Koochiching | 29 min |
| Jul 13, 9:51 PM CDT | Special Weather Statement | DLH | Crow Wing | 24 min |
| Jul 13, 9:53 PM CDT | Special Weather Statement | DLH | Cass | 7 min |
| Jul 13, 10:04 PM CDT | Special Weather Statement | DLH | Cass | 26 min |
| Jul 13, 10:21 PM CDT | Special Weather Statement | DLH | Saint Louis | 24 min |
| Jul 13, 10:30 PM CDT | Special Weather Statement | DLH | Itasca | 30 min |
| Jul 13, 10:35 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Itasca, Saint Louis | 40 min |
| Jul 13, 10:49 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 41 min |
| Jul 13, 11:23 PM CDT | Severe Thunderstorm Warning | DLH | Cook, Lake, Saint Louis | 52 min |
| Jul 13, 11:57 PM CDT | Severe Thunderstorm Warning | DLH | Carlton, Lake, Saint Louis | 33 min |
| Jul 14, 12:08 AM CDT | Special Weather Statement | DLH | Cook | 52 min |
| Jul 14, 1:15 AM CDT | Special Weather Statement | DLH | Pine | 15 min |
| Jul 14, 2:30 AM CDT | Special Weather Statement | DLH | Sawyer | 30 min |
| Jul 14, 3:04 AM CDT | Special Weather Statement | DLH | Iron, Sawyer | 26 min |
| Jul 14, 3:36 AM CDT | Special Weather Statement | DLH | Iron, Price | 24 min |
| Jul 14, 4:08 AM CDT | Special Weather Statement | DLH | Price | 37 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 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.