Alert archive / Alabama / Hard Freeze Warnings in 2008

Hard Freeze Warning 3, NWS Mobile, AL

January 19, 200810 counties in Alabama; 5 counties in Mississippi

NWS Mobile, AL issued this hard freeze warning at Jan 19, 2008, 4:01 AM CST for 10 counties in Alabama; 5 counties in Mississippi. It took effect at Jan 20, 2008, 12:00 AM CST. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jan 19, 2008, 4:01 AM CST (10:01 UTC)
In effect from: Jan 20, 2008, 12:00 AM CST
Expired: Jan 20, 2008, 9:00 AM CST
In force: 9 hr
Issued by: NWS Mobile, AL

Counties Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Monroe County, AL, Washington County, AL, Wilcox County, AL, George County, MS, Greene County, MS, Perry County, MS, Stone County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 96 km from the middle of the area, began a volume at 10:03 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, 10.0 hours before the alert went out and 226 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1046 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this hard freeze warning 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 hard freeze warning went out at Jan 18, 10:05 PM CST, 5 hours 56 minutes earlier.

Area forecast discussion, Jan 18, 10:05 PM CST, 5 hours 56 minutes before

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Hazardous weather outlook, Jan 18, 9:48 PM CST, 6 hours 13 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
Jan 18, 9:35 PM CST	Winter Weather Advisory	MOB	Choctaw, Clarke, Wilcox	10 hr
Jan 19, 7:18 AM CST	Snow Advisory	MOB	Choctaw, Clarke, Washington, Wilcox	3 hr
Jan 19, 10:17 AM CST	Heavy Snow Warning	MOB	Choctaw, Clarke, Monroe, Washington, Wilcox	3 hr
Jan 19, 10:17 AM CST	Winter Weather Advisory	MOB	Butler, Conecuh, Covington, Crenshaw, Escambia	3 hr
Jan 19, 1:36 PM CST	Hard Freeze Watch	MOB	Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more	15 hr
Jan 19, 2:52 PM CST	Red Flag Warning	MOB	Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 3 more	27 hr
Jan 19, 2:52 PM CST	Fire Weather Watch	MOB	Walton	49 hr

Nearby

Hard Freeze Warnings in Alabama, 2008 Hard Freeze Warnings in Mississippi, 2008 Hard Freeze Warnings in Florida, 2008 Every hard freeze warning in 2008

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.