Alert archive / Georgia / Excessive Heat Warnings in 2011

Excessive Heat Warning 1, NWS Charleston, SC

July 13, 20115 counties in Georgia; 5 counties in South Carolina

NWS Charleston, SC issued this excessive heat warning at Jul 13, 2011, 3:38 AM EDT for 5 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. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 13, 2011, 3:38 AM EDT (07:38 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, Jenkins County, GA, Screven County, GA, Allendale County, SC, Berkeley County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC

The radar

The Charleston,SC radar (KCLX), 21 km from the middle of the area, began a volume at 07:35 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 00:00Z, 7.6 hours before the alert went out and 115 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: 4236 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 951 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 156 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 Charleston, SC wrote its last area forecast discussion before this excessive heat warning went out at Jul 13, 1:10 AM EDT, 2 hours 28 minutes earlier.

Area forecast discussion, Jul 13, 1:10 AM EDT, 2 hours 28 minutes before

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Hazardous weather outlook, Jul 12, 8:01 PM EDT, 7 hours 37 minutes before

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In the hours before

Special weather statement, Jul 12, 10:13 PM EDT, 5 hours 25 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 13, 2:05 PM EDT	Special Weather Statement	CHS	Berkeley	55 min
Jul 13, 2:08 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	67 min
Jul 13, 3:17 PM EDT	Special Weather Statement	CHS	Berkeley	28 min
Jul 13, 5:53 PM EDT	Special Weather Statement	CHS	Charleston	37 min

Nearby

Excessive Heat Warnings in Georgia, 2011 Excessive Heat Warnings in South Carolina, 2011 Every excessive heat warning 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.