Alert archive / Georgia / Heat Advisories in 2011

Heat Advisory 16, NWS Charleston, SC

July 31, 20118 counties in Georgia; 5 counties in South Carolina

NWS Charleston, SC issued this heat advisory at Jul 31, 2011, 3:29 AM EDT for 8 counties in Georgia; 5 counties in South Carolina. It took effect at Jul 31, 2011, 11:00 AM EDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Jul 31, 2011, 3:29 AM EDT (07:29 UTC)
In effect from: Jul 31, 2011, 11:00 AM EDT
Expired: Jul 31, 2011, 7:00 PM EDT
In force: 8 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 radar

The Charleston,SC radar (KCLX), 33 km from the middle of the area, began a volume at 07:29 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 7.5 hours before the alert went out and 304 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: 88 J/kg
Mixed-layer CIN: -193 J/kg
Mixed-layer LCL: 1413 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: -23 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 Jul 31, 1:48 AM EDT, 1 hour 41 minutes earlier.

Area forecast discussion, Jul 31, 1:48 AM EDT, 1 hour 41 minutes before

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Hazardous weather outlook, Jul 30, 8:36 PM EDT, 6 hours 53 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
Jul 31, 5:04 PM EDT	Special Weather Statement	CHS	Chatham	26 min
Jul 31, 5:33 PM EDT	Special Weather Statement	CHS	Chatham	42 min
Jul 31, 5:37 PM EDT	Severe Thunderstorm Warning	CHS	Bryan, Chatham, Effingham	68 min
Jul 31, 6:43 PM EDT	Severe Thunderstorm Warning	CHS	Bryan, Liberty	52 min
Jul 31, 7:50 PM EDT	Special Weather Statement	CHS	Bulloch, Effingham	25 min
Jul 31, 7:56 PM EDT	Special Weather Statement	CHS	Long	64 min
Jul 31, 1:05 PM EDT	Excessive Heat Warning	CHS	Berkeley, Colleton, Dorchester	6 hr
Jul 31, 3:42 PM EDT	Special Weather Statement	CHS	Berkeley	48 min
Jul 31, 4:01 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	59 min
Jul 31, 4:59 PM EDT	Areal Flood Advisory	CHS	Berkeley	91 min
Jul 31, 5:25 PM EDT	Special Weather Statement	CHS	Dorchester	50 min
Jul 31, 5:59 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort, Colleton, Hampton	61 min
Jul 31, 6:41 PM EDT	Severe Thunderstorm Warning	CHS	Allendale, Beaufort, Colleton, Hampton, Jasper	64 min
Jul 31, 6:58 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort, Charleston, Colleton, Dorchester	39 min

Nearby

Heat Advisories in Georgia, 2011 Heat Advisories in South Carolina, 2011 Every heat advisory in 2011

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.