Alert archive / Georgia / Heat Advisories in 2014

Heat Advisory 3, NWS Charleston, SC

August 20, 20145 counties in South Carolina; 8 counties in Georgia

NWS Charleston, SC issued this heat advisory at Aug 20, 2014, 3:47 PM EDT for 5 counties in South Carolina; 8 counties in Georgia. It took effect at Aug 21, 2014, 12:00 PM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Aug 20, 2014, 3:47 PM EDT (19:47 UTC)
In effect from: Aug 21, 2014, 12:00 PM EDT
Expired: Aug 21, 2014, 6:52 PM EDT
In force: 7 hr
Issued by: NWS Charleston, SC

Counties Bulloch County, GA, Candler County, GA, Effingham County, GA, Evans County, GA, Jenkins County, GA, Long County, GA, Screven County, GA, Tattnall County, GA, Allendale County, SC, Berkeley County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 7.8 hours before the alert went out and 134 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: 207 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 980 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 15 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 heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Charleston, SC wrote its last area forecast discussion before this heat advisory went out at Aug 20, 2:08 PM EDT, 1 hour 39 minutes earlier.

Area forecast discussion, Aug 20, 2:08 PM EDT, 1 hour 39 minutes before

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Hazardous weather outlook, Aug 20, 4:56 AM EDT, 10 hours 51 minutes before

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The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 20, 3:11 PM EDT	Special Marine Warning	CHS		2 hr
Aug 20, 3:33 PM EDT	Severe Thunderstorm Warning	CHS	Charleston	57 min
Aug 20, 6:40 PM EDT	Special Weather Statement	CHS	Bulloch, Candler, Evans, Jenkins, Screven, Tattnall	50 min
Aug 20, 7:28 PM EDT	Special Weather Statement	CHS	Bulloch, Candler, Evans, Jenkins, Tattnall	32 min
Aug 20, 7:39 PM EDT	Areal Flood Advisory	CHS	Bulloch, Candler, Evans	96 min
Aug 20, 7:53 PM EDT	Severe Thunderstorm Warning	CHS	Bulloch, Effingham, Screven	25 min
Aug 20, 7:59 PM EDT	Special Weather Statement	CHS	Evans, Tattnall	46 min

Nearby

Heat Advisories in Georgia, 2014 Heat Advisories in South Carolina, 2014 Every heat advisory in 2014

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.