Alert archive / Georgia / Freeze Watches in 2015

Freeze Watch 3, NWS Atlanta, GA

November 13, 201518 counties in Georgia

NWS Atlanta, GA issued this freeze watch at Nov 13, 2015, 2:40 AM EST for 18 counties in Georgia. It took effect at Nov 14, 2015, 12:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued: Nov 13, 2015, 2:40 AM EST (07:40 UTC)
In effect from: Nov 14, 2015, 12:00 AM EST
Expired: Nov 13, 2015, 1:19 PM EST
In force
Issued by: NWS Atlanta, GA

Counties Bartow County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Dade County, GA, Dawson County, GA, Fannin County, GA, Floyd County, GA, Gilmer County, GA, Gordon County, GA, Lumpkin County, GA, Murray County, GA, Pickens County, GA, Towns County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA

The radar

The Northeast Alabama radar (KHTX), 137 km from the middle of the area, began a volume at 07:41 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

Nashville Metro, TN (KBNA), launched 00:00Z, 7.7 hours before the alert went out and 245 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: 1564 m above ground
0-6 km bulk shear: 88 kt
0-1 km storm-relative helicity: -39 m²/s²
0-3 km storm-relative helicity: 45 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 watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Atlanta, GA wrote its last area forecast discussion before this freeze watch went out at Nov 13, 12:33 AM EST, 2 hours 7 minutes earlier.

Area forecast discussion, Nov 13, 12:33 AM EST, 2 hours 7 minutes before

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Hazardous weather outlook, Nov 12, 7:15 PM EST, 7 hours 25 minutes before

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The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 13, 1:19 PM EST	Freeze Warning	FFC	Bartow, Catoosa, Chattooga, Cherokee, Dade, Dawson and 12 more	20 hr
Nov 13, 6:58 PM EST	Frost Advisory	FFC	Banks, Barrow, Butts, Carroll, Clarke, Clayton and 32 more	14 hr

Nearby

Freeze Watches in Georgia, 2015 Every freeze watch in 2015

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.