Alert archive / Georgia / Freeze Warnings in 2012

Freeze Warning 11, NWS Jacksonville, FL

November 25, 20126 counties in Florida; 12 counties in Georgia

NWS Jacksonville, FL issued this freeze warning at Nov 25, 2012, 2:36 AM EST for 6 counties in Florida; 12 counties in Georgia. It took effect at Nov 26, 2012, 1:00 AM EST. It was in force for 7 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: Nov 25, 2012, 2:36 AM EST (07:36 UTC)
In effect from: Nov 26, 2012, 1:00 AM EST
Expired: Nov 26, 2012, 8:00 AM EST
In force: 7 hr
Issued by: NWS Jacksonville, FL

Counties Baker County, FL, Bradford County, FL, Gilchrist County, FL, Nassau County, FL, Suwannee County, FL, Union County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Brantley County, GA, Camden County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Glynn County, GA, Jeff Davis County, GA, Pierce County, GA, Wayne County, GA

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 7.6 hours before the alert went out and 78 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: 2271 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 83 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 freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before this freeze warning went out at Nov 25, 2:19 AM EST, 17 minutes earlier.

Area forecast discussion, Nov 25, 2:19 AM EST, 17 minutes before

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Hazardous weather outlook, Nov 24, 10:10 PM EST, 4 hours 26 minutes before

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The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 24, 10:06 PM EST	Frost Advisory	JAX	Flagler	10 hr
Nov 25, 2:48 PM EST	Frost Advisory	JAX	Flagler	17 hr

Nearby

Freeze Warnings in Georgia, 2012 Freeze Warnings in Florida, 2012 Every freeze warning in 2012

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.