Alert archive / Michigan / Dense Fog Advisories in 2021
Dense Fog Advisory 1, NWS Gaylord, MI
NWS Gaylord, MI issued this dense fog advisory at Aug 10, 2021, 2:32 AM EDT for 8 counties in Michigan. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Aug 10, 2021, 2:32 AM EDT (06:32 UTC)
- Expired
- Aug 10, 2021, 9:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Gaylord, MI
Counties Antrim County, MI, Benzie County, MI, Charlevoix County, MI, Chippewa County, MI, Emmet County, MI, Leelanau County, MI, Mackinac County, MI, Manistee County, MI
The radar
The NCL Michigan radar (KAPX), 66 km from the middle of the area, began a volume at 06:34 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
Detroit, MI (KDTX), launched 00:00Z, 6.5 hours before the alert went out and 323 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
- 532 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 924 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 75 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 Gaylord, MI wrote its last area forecast discussion before this dense fog advisory went out at Aug 10, 2:15 AM EDT, 17 minutes earlier.
Area forecast discussion, Aug 10, 2:15 AM EDT, 17 minutes before
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</html>Hazardous weather outlook, Aug 9, 2:23 PM EDT, 12 hours 9 minutes before
Hazardous Weather Outlook National Weather Service Gaylord MI 223 PM EDT Mon Aug 9 2021 MIZ016>018-020>036-041-042-086>088-095>099-101200- Emmet-Cheboygan-Presque Isle-Leelanau-Antrim-Otsego-Montmorency- Alpena-Benzie-Grand Traverse-Kalkaska-Crawford-Oscoda-Alcona- Manistee-Wexford-Missaukee-Roscommon-Ogemaw-Iosco-Gladwin-Arenac- Western Chippewa-Central Chippewa-Southeast Chippewa- Western Mackinac-Eastern Mackinac- Mackinac Island/Bois Blanc Island- Beaver Island and surrounding islands-Charlevoix- 223 PM EDT Mon Aug 9 2021 This hazardous weather outlook is for Eastern Upper Michigan and Northern Lower Michigan. .DAY ONE...Through tonight. Scattered to numerous thunderstorms are expected across northern Michigan through tonight. While the chance for severe storms is rather small, a few storms may be able to produce some decent hail and fairly gusty erratic winds. Locally heavy rainfall totals are possible, mainly in northern lower Michigan. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. There will be additional thunderstorm chances Tuesday through Thursday night. There is a chance for a few storms to be severe, with damaging winds and large hail being the primary threats. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report any significant weather and rainfall amounts to the National Weather Service. Reports may be made one of three ways: Online: weather.gov/gaylord Facebook: facebook.com/nwsgaylord Twitter: twitter.com/nwsgaylord For more information visit http://weather.gov/gaylord. LHZ345>349-LMZ323-341-342-344>346-LSZ321-322-101200- Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island-St Ignace to False Detour Channel- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary-Sturgeon Pt to Alabaster MI- Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- Manistee to Point Betsie MI- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- St. Marys River Point Iroquois to E. Potagannissing Bay- 223 PM EDT Mon Aug 9 2021 This hazardous weather outlook is for the northern Michigan nearshore waters of Lake Huron, Lake Michigan and Lake Superior. .DAY ONE...Through tonight. Scattered to numerous thunderstorms are expected across northern Michigan through tonight. While the chance for severe storms is rather small, a few storms may be able to produce some decent hail and fairly gusty erratic winds this afternoon and early this evening. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. There will be additional thunderstorm chances Tuesday through Thursday night. There is a chance for a few storms to be severe, with damaging winds and large hail being the primary threats. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated. For more information visit http://weather.gov/gaylord.
The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 6:13 PM EDT | Special Marine Warning | APX | 92 min | |
| Aug 10, 6:58 PM EDT | Special Weather Statement | APX | Charlevoix | 47 min |
| Aug 10, 7:17 PM EDT | Special Marine Warning | APX | 88 min |
Nearby
Dense Fog Advisories in Michigan, 2021Every dense fog advisory 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.