Alert archive / Minnesota / Special Weather Statements in 2021
Special Weather Statement, NWS Duluth, MN
NWS Duluth, MN issued this special weather statement at Aug 10, 2021, 3:56 AM CDT for Cass County, Minnesota. It was in force for 19 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 10, 2021, 3:56 AM CDT (08:56 UTC)
- Expired
- Aug 10, 2021, 4:15 AM CDT
- In force
- 19 min
- Issued by
- NWS Duluth, MN
- Hail
- 0.25 in
- Wind
- 30
County Cass County, MN
The radar
The Duluth radar (KDLH), 124 km from the middle of the area, began a volume at 08:57 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, 8.9 hours before the alert went out and 175 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
- 1281 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1326 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 220 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 5.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Aug 10, 1:10 AM CDT, 2 hours 46 minutes earlier.
Area forecast discussion, Aug 10, 1:10 AM CDT, 2 hours 46 minutes before
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</html>Hazardous weather outlook, Aug 10, 3:53 AM CDT, 3 minutes before
Hazardous Weather Outlook National Weather Service Duluth MN 353 AM CDT Tue Aug 10 2021 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-110900- 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- 353 AM CDT Tue Aug 10 2021 This Hazardous Weather Outlook is for portions of northeast Minnesota and northwest Wisconsin. .DAY ONE...Today and Tonight A Dense Fog Advisory has been issued for Carlton and Southern St. Louis County until 10am this morning. Fog has developed overnight and it may become locally dense at times, especially for areas near Lake Superior. Thunderstorms are possible this afternoon mainly over northwest Wisconsin. A few of the stronger storms may produce large hail and damaging winds .DAYS TWO THROUGH SEVEN...Wednesday through Monday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Skywarn spotter activation will not be needed today or tonight. LSZ121-140>148-150-110900- 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- Outer Apostle Islands Beyond 5 NM from Mainland- 353 AM CDT Tue Aug 10 2021 This Hazardous Weather Outlook is for portions of Lake Superior and the Nearshore waters of western Lake Superior. .DAY ONE...Today and Tonight Areas of dense fog has developed and may linger through Tuesday morning. A Dense Fog Advisory is in effect for all nearshore zones until 10am. .DAYS TWO THROUGH SEVEN...Wednesday through Monday No hazardous weather is expected at this time. KSE 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, Aug 10, 3:21 AM CDT, 35 minutes before
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</html>Special weather statement, Aug 10, 3:45 AM CDT, 11 minutes before
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</html>Special weather statement, Aug 10, 3:56 AM CDT, 0 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 |
|---|---|---|---|---|
| Aug 9, 7:15 PM CDT | Marine Dense Fog Advisory | DLH | 15 hr | |
| Aug 10, 3:21 AM CDT | Special Weather Statement | DLH | Koochiching | 24 min |
| Aug 10, 3:38 AM CDT | Dense Fog Advisory | DLH | Carlton, Cook, Lake, Saint Louis | 6 hr |
| Aug 10, 3:45 AM CDT | Special Weather Statement | DLH | Koochiching | 15 min |
| Aug 10, 4:14 AM CDT | Special Weather Statement | DLH | Cass | 16 min |
| Aug 10, 4:29 AM CDT | Special Weather Statement | DLH | Aitkin | 16 min |
| Aug 10, 4:52 AM CDT | Special Weather Statement | DLH | Aitkin | 23 min |
| Aug 10, 4:54 AM CDT | Special Weather Statement | DLH | Koochiching | 36 min |
| Aug 10, 5:22 AM CDT | Special Weather Statement | DLH | Carlton | 23 min |
| Aug 10, 5:27 AM CDT | Special Weather Statement | DLH | 33 min | |
| Aug 10, 5:58 AM CDT | Special Weather Statement | DLH | 32 min | |
| Aug 10, 12:20 PM CDT | Special Marine Warning | DLH | 55 min | |
| Aug 10, 1:33 PM CDT | Special Marine Warning | DLH | 57 min | |
| Aug 10, 1:40 PM CDT | Special Weather Statement | DLH | Cook | 35 min |
| Aug 10, 11:04 AM CDT | Special Weather Statement | DLH | Burnett | 26 min |
| Aug 10, 11:18 AM CDT | Special Weather Statement | DLH | Washburn | 27 min |
| Aug 10, 11:30 AM CDT | Special Weather Statement | DLH | Bayfield | 30 min |
| Aug 10, 11:39 AM CDT | Special Weather Statement | DLH | Douglas | 36 min |
| Aug 10, 11:46 AM CDT | Special Weather Statement | DLH | Bayfield | 44 min |
| Aug 10, 11:52 AM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield, Sawyer | 38 min |
| Aug 10, 12:21 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Iron | 39 min |
Nearby
Special Weather Statements in Minnesota, 2021Every special weather statement in 2021
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.