Alert archive / Georgia / Heat Advisories in 2011

Heat Advisory 8, NWS Charleston, SC

July 12, 20118 counties in Georgia; 5 counties in South Carolina

NWS Charleston, SC issued this heat advisory at Jul 12, 2011, 3:33 PM EDT for 8 counties in Georgia; 5 counties in South Carolina. It took effect at Jul 13, 2011, 11:00 AM EDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Jul 12, 2011, 3:33 PM EDT (19:33 UTC)
In effect from: Jul 13, 2011, 11:00 AM EDT
Expired: Jul 13, 2011, 8:31 PM EDT
In force: 10 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 19:33 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

Charleston AFB, SC (KCHS), launched 12:00Z, 7.6 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: 1948 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 837 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 54 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 12, 2:16 PM EDT, 1 hour 17 minutes earlier.

Area forecast discussion, Jul 12, 2:16 PM EDT, 1 hour 17 minutes before

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Hazardous weather outlook, Jul 12, 4:19 AM EDT, 11 hours 14 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 12, 5:02 PM EDT	Special Weather Statement	CHS	Bryan	43 min
Jul 12, 5:43 PM EDT	Special Weather Statement	CHS	Chatham, Liberty	32 min
Jul 12, 5:50 PM EDT	Areal Flood Advisory	CHS	Bryan, Liberty	67 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.