Alert archive / Mississippi / Dense Fog Advisories in 2017

Dense Fog Advisory 2, NWS Mobile, AL

January 3, 20175 counties in Mississippi

NWS Mobile, AL issued this dense fog advisory at Jan 3, 2017, 5:27 AM CST for 5 counties in Mississippi. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jan 3, 2017, 5:27 AM CST (11:27 UTC)
Expired: Jan 3, 2017, 8:07 AM CST
In force: 3 hr
Issued by: NWS Mobile, AL

Counties George County, MS, Greene County, MS, Perry County, MS, Stone County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 75 km from the middle of the area, began a volume at 11:29 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 11.5 hours before the alert went out and 130 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: 296 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 738 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Jan 3, 4:45 AM CST, 42 minutes earlier.

Area forecast discussion, Jan 3, 4:45 AM CST, 42 minutes before

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Hazardous weather outlook, Jan 2, 10:32 PM CST, 6 hours 55 minutes before

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In the hours before

Local storm report, Jan 3, 12:03 AM CST, 5 hours 24 minutes before

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Local storm report, Jan 3, 12:26 AM CST, 5 hours 1 minute 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
Jan 2, 6:03 PM CST	Special Marine Warning	MOB		42 min
Jan 2, 6:07 PM CST	Special Weather Statement	MOB	Mobile	23 min
Jan 2, 6:11 PM CST	Special Marine Warning	MOB		34 min
Jan 2, 6:22 PM CST	Special Marine Warning	MOB		113 min
Jan 2, 6:44 PM CST	Severe Thunderstorm Warning	MOB	Covington	31 min
Jan 2, 6:45 PM CST	Special Marine Warning	MOB		45 min
Jan 2, 6:47 PM CST	Special Marine Warning	MOB		43 min
Jan 2, 6:48 PM CST	Special Weather Statement	MOB	Mobile	27 min
Jan 2, 7:18 PM CST	Dense Fog Advisory	MOB	Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more	8 hr
Jan 2, 7:18 PM CST	River Flood Warning	MOB	Escambia	59 hr
Jan 2, 7:27 PM CST	Special Marine Warning	MOB		93 min
Jan 2, 7:27 PM CST	Special Marine Warning	MOB		63 min
Jan 2, 8:00 PM CST	Severe Thunderstorm Warning	MOB	Baldwin	45 min
Jan 2, 8:05 PM CST	Marine Dense Fog Advisory	MOB		11 hr
Jan 2, 8:16 PM CST	Special Marine Warning	MOB		44 min
Jan 2, 9:00 PM CST	Special Marine Warning	MOB		60 min
Jan 2, 10:11 PM CST	River Flood Warning	MOB	Baldwin	18 hr
Jan 3, 6:44 AM CST	River Flood Warning	MOB	Escambia	17 hr
Jan 3, 10:13 AM CST	River Flood Warning	MOB	Dallas, Monroe, Wilcox	3 days
Jan 2, 7:42 PM CST	Special Weather Statement	MOB	Escambia, Santa Rosa	48 min
Jan 2, 8:49 PM CST	Special Weather Statement	MOB	Escambia, Okaloosa	41 min
Jan 2, 9:40 PM CST	Special Weather Statement	MOB	Escambia, Santa Rosa	35 min
Jan 2, 7:26 PM CST	River Flood Warning	MOB	George, Greene, Perry	48 hr
Jan 2, 7:26 PM CST	River Flood Warning	MOB	George, Greene, Wayne	68 hr

Nearby

Dense Fog Advisories in Mississippi, 2017 Every dense fog advisory in 2017

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.