Alert archive / Florida / Dense Fog Advisories in 2021
Dense Fog Advisory 2, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this dense fog advisory at Jan 24, 2021, 6:56 AM EST for 4 counties in Florida. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jan 24, 2021, 6:56 AM EST (11:56 UTC)
- Expired
- Jan 24, 2021, 9:00 AM EST
- In force
- 2 hr
- Issued by
- NWS Tampa Bay, FL
Counties Charlotte County, FL, DeSoto County, FL, Lee County, FL, Sarasota County, FL
The radar
The Tampa radar (KTBW), 91 km from the middle of the area, began a volume at 11:59 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
Miami, FL (KMFL), launched 00:00Z, 11.9 hours before the alert went out and 213 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
- 1039 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 23, 8:49 PM EST | Marine Dense Fog Advisory | TBW | 12 hr |
Nearby
Dense Fog Advisories in Florida, 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.