Alert archive / Georgia / Excessive Heat Warnings in 2007

Excessive Heat Warning 2, NWS Jacksonville, FL

August 9, 200712 counties in Georgia

NWS Jacksonville, FL issued this excessive heat warning at Aug 9, 2007, 2:37 PM EDT for 12 counties in Georgia. It took effect at Aug 10, 2007, 12:00 PM EDT. It was in force for 8 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: Aug 9, 2007, 2:37 PM EDT (18:37 UTC)
In effect from: Aug 10, 2007, 12:00 PM EDT
Expired: Aug 10, 2007, 8:00 PM EDT
In force: 8 hr
Issued by: NWS Jacksonville, FL

Counties 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 6.6 hours before the alert went out and 214 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: 2118 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 1036 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 13 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 excessive heat 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 excessive heat warning went out at Aug 9, 2:30 PM EDT, 7 minutes earlier.

Area forecast discussion, Aug 9, 2:30 PM EDT, 7 minutes before

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Hazardous weather outlook, Aug 9, 11:00 AM EDT, 3 hours 37 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
Aug 9, 2:37 PM EDT	Heat Advisory	JAX	Baker, Bradford, Gilchrist, Suwannee, Union	29 hr
Aug 9, 4:19 PM EDT	Severe Thunderstorm Warning	JAX	Nassau	26 min
Aug 9, 9:44 AM EDT	Excessive Heat Warning	JAX	Appling, Atkinson, Bacon, Brantley, Camden, Clinch and 6 more	9 hr
Aug 9, 4:00 PM EDT	Severe Thunderstorm Warning	JAX	Clinch	45 min

Nearby

Excessive Heat Warnings in Georgia, 2007 Every excessive heat warning in 2007

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.