Alert archive / Alabama / Dense Fog Advisories in 2025

Dense Fog Advisory 21, NWS Mobile, AL

May 4, 20257 counties in Alabama

NWS Mobile, AL issued this dense fog advisory at May 4, 2025, 5:56 AM CDT for 7 counties in Alabama. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: May 4, 2025, 5:56 AM CDT (10:56 UTC)
Expired: May 4, 2025, 9:00 AM CDT
In force: 3 hr
Issued by: NWS Mobile, AL

Counties Butler County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Monroe County, AL, Wilcox County, AL

The radar

The Ft Rucker radar (KEOX), 137 km from the middle of the area, began a volume at 10:54 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 10.9 hours before the alert went out and 302 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 425 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 837 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.8

Open this sounding in Storm Lab

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 Mobile, AL wrote its last area forecast discussion before this dense fog advisory went out at May 3, 6:57 PM CDT, 10 hours 59 minutes earlier.

Area forecast discussion, May 3, 6:57 PM CDT, 10 hours 59 minutes before

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The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 3, 8:08 PM CDT	Special Marine Warning	MOB		37 min

Nearby

Dense Fog Advisories in Alabama, 2025 Every dense fog advisory in 2025

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.