Alert archive / Minnesota / Dense Fog Advisories in 2024
Dense Fog Advisory 13, NWS Twin Cities, MN
NWS Twin Cities, MN issued this dense fog advisory at Jul 22, 2024, 4:30 AM CDT for 11 counties in Minnesota; 8 counties in Wisconsin. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jul 22, 2024, 4:30 AM CDT (09:30 UTC)
- Expired
- Jul 22, 2024, 8:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Twin Cities, MN
Counties Blue Earth County, MN, Dakota County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Le Sueur County, MN, Martin County, MN, Rice County, MN, Steele County, MN, Waseca County, MN, Watonwan County, MN, Barron County, WI, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Pierce County, WI, Rusk County, WI, Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 70 km from the middle of the area, began a volume at 09:35 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
Green Bay/Straub, WI (KGRB), launched 00:00Z, 9.5 hours before the alert went out and 379 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
- 1989 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this dense fog advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Twin Cities, MN wrote its last area forecast discussion before this dense fog advisory went out at Jul 22, 3:42 AM CDT, 48 minutes earlier.
Area forecast discussion, Jul 22, 3:42 AM CDT, 48 minutes before
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</html>Hazardous weather outlook, Jul 22, 3:29 AM CDT, 1 hour 1 minute before
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</html>The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 4:35 PM CDT | Special Weather Statement | MPX | Anoka | 25 min |
| Jul 22, 5:29 PM CDT | Special Weather Statement | MPX | Hennepin | 31 min |
| Jul 22, 5:35 PM CDT | Special Weather Statement | MPX | Ramsey, Washington | 25 min |
| Jul 22, 5:53 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Hennepin, Ramsey, Washington | 24 min |
| Jul 22, 6:19 PM CDT | Special Weather Statement | MPX | Dakota | 26 min |
| Jul 22, 6:41 PM CDT | Special Weather Statement | MPX | Goodhue | 49 min |
Nearby
Dense Fog Advisories in Minnesota, 2024Dense Fog Advisories in Wisconsin, 2024Every dense fog advisory in 2024
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.