Alert archive / Georgia / Heat Advisories in 2013

Heat Advisory 2, NWS Charleston, SC

June 28, 2013Allendale County, Colleton County, Hampton County, South Carolina; 8 counties in Georgia

NWS Charleston, SC issued this heat advisory at Jun 28, 2013, 6:38 AM EDT for Allendale County, Colleton County, Hampton County, South Carolina; 8 counties in Georgia. It took effect at Jun 28, 2013, 12:00 PM EDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: Jun 28, 2013, 6:38 AM EDT (10:38 UTC)
In effect from: Jun 28, 2013, 12:00 PM EDT
Expired: Jun 28, 2013, 5:38 PM EDT
In force: 6 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, Colleton County, SC, Hampton County, SC

The radar

The Charleston,SC radar (KCLX), 56 km from the middle of the area, began a volume at 10:40 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, 10.6 hours before the alert went out and 288 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: 3023 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 896 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.2

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 Jun 28, 4:46 AM EDT, 1 hour 52 minutes earlier.

Area forecast discussion, Jun 28, 4:46 AM EDT, 1 hour 52 minutes before

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Hazardous weather outlook, Jun 28, 4:56 AM EDT, 1 hour 42 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
Jun 27, 9:02 PM EDT	Special Weather Statement	CHS	Allendale	28 min
Jun 27, 9:22 PM EDT	Severe Thunderstorm Warning	CHS	Allendale	38 min
Jun 27, 9:54 PM EDT	Special Weather Statement	CHS	Hampton	36 min
Jun 28, 4:00 AM EDT	Small Craft Advisory	CHS		4 days
Jun 28, 11:33 AM EDT	Special Marine Warning	CHS		87 min
Jun 28, 4:06 PM EDT	Special Weather Statement	CHS	Liberty	24 min
Jun 28, 4:13 PM EDT	Severe Thunderstorm Warning	CHS	Liberty, Long, Tattnall	62 min

Nearby

Heat Advisories in Georgia, 2013 Heat Advisories in South Carolina, 2013 Every heat advisory in 2013

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.