Alert archive / Georgia / Freeze Warnings in 2016

Freeze Warning 1, NWS Jacksonville, FL

January 4, 20164 counties in Florida; 12 counties in Georgia

NWS Jacksonville, FL issued this freeze warning at Jan 4, 2016, 2:34 AM EST for 4 counties in Florida; 12 counties in Georgia. It took effect at Jan 5, 2016, 2:00 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: Jan 4, 2016, 2:34 AM EST (07:34 UTC)
In effect from: Jan 5, 2016, 2:00 AM EST
Expired: Jan 5, 2016, 9:00 AM EST
In force: 7 hr
Issued by: NWS Jacksonville, FL

Counties Baker 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 radar

The Moody AFB radar (KVAX), 66 km from the middle of the area, began a volume at 07:38 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

Charleston AFB, SC (KCHS), launched 00:00Z, 7.6 hours before the alert went out and 300 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: 2332 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 9 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 Jan 3, 10:09 PM EST, 4 hours 25 minutes earlier.

Area forecast discussion, Jan 3, 10:09 PM EST, 4 hours 25 minutes before

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Hazardous weather outlook, Jan 3, 10:24 PM EST, 4 hours 10 minutes before

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Nearby

Freeze Warnings in Georgia, 2016 Freeze Warnings in Florida, 2016 Every freeze warning in 2016

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.