Alert archive / South Carolina / Heat Advisories in 2010

Heat Advisory 13, NWS Columbia, SC

July 27, 201011 counties in South Carolina; 5 counties in Georgia

NWS Columbia, SC issued this heat advisory at Jul 27, 2010, 4:00 AM EDT for 11 counties in South Carolina; 5 counties in Georgia. It took effect at Jul 27, 2010, 12:00 PM EDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Jul 27, 2010, 4:00 AM EDT (08:00 UTC)
In effect from
Jul 27, 2010, 12:00 PM EDT
Expired
Jul 27, 2010, 6:00 PM EDT
In force
6 hr
Issued by
NWS Columbia, SC

Counties Burke County, GA, Columbia County, GA, Lincoln County, GA, McDuffie County, GA, Richmond County, GA, Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Clarendon County, SC, Edgefield County, SC, Lexington County, SC, McCormick County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 54 km from the middle of the area, began a volume at 07:59 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, 8.0 hours before the alert went out and 274 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2010-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2438 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2010-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2438 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1646 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
-17 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 Columbia, SC wrote its last area forecast discussion before this heat advisory went out at Jul 27, 3:55 AM EDT, 5 minutes earlier.

Area forecast discussion, Jul 27, 3:55 AM EDT, 5 minutes before
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Hazardous weather outlook, Jul 26, 10:38 PM EDT, 5 hours 22 minutes before
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In the hours before

Local storm report, Jul 26, 10:27 PM EDT, 5 hours 33 minutes before
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Local storm report, Jul 27, 1:58 AM EDT, 2 hours 2 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 8:29 PM EDTSevere Thunderstorm WarningCAEChesterfield, Lancaster46 min
Jul 26, 9:11 PM EDTSevere Thunderstorm WarningCAECalhoun49 min
Jul 26, 9:44 PM EDTSevere Thunderstorm WarningCAEAiken36 min
Jul 27, 3:29 PM EDTSevere Thunderstorm WarningCAEEdgefield, McCormick31 min
Jul 27, 3:42 PM EDTSevere Thunderstorm WarningCAEChesterfield, Kershaw, Lee48 min
Jul 27, 4:19 PM EDTSevere Thunderstorm WarningCAELee41 min
Jul 27, 4:44 PM EDTSevere Thunderstorm WarningCAEAiken, Barnwell, Calhoun, Lexington, Orangeburg46 min
Jul 27, 4:51 PM EDTSevere Thunderstorm WarningCAERichland39 min
Jul 27, 4:53 PM EDTSevere Thunderstorm WarningCAELee, Sumter52 min
Jul 27, 5:15 PM EDTSevere Thunderstorm WarningCAELexington, Richland45 min
Jul 27, 5:31 PM EDTSevere Thunderstorm WarningCAEAiken59 min
Jul 27, 5:34 PM EDTSevere Thunderstorm WarningCAEKershaw, Richland41 min
Jul 27, 5:37 PM EDTSevere Thunderstorm WarningCAERichland53 min
Jul 27, 5:49 PM EDTSevere Thunderstorm WarningCAEClarendon, Sumter56 min
Jul 27, 6:04 PM EDTSevere Thunderstorm WarningCAECalhoun56 min
Jul 27, 6:22 PM EDTSevere Thunderstorm WarningCAEAiken, Bamberg, Barnwell, Calhoun, Clarendon, Orangeburg and 1 more68 min
Jul 27, 6:40 PM EDTSevere Thunderstorm WarningCAEAiken65 min
Jul 27, 7:27 PM EDTSevere Thunderstorm WarningCAEBamberg, Clarendon, Orangeburg32 min
Jul 27, 7:40 PM EDTSevere Thunderstorm WarningCAEChesterfield, Kershaw, Lee50 min
Jul 27, 6:01 PM EDTSevere Thunderstorm WarningCAEColumbia, McDuffie59 min

Nearby

Heat Advisories in South Carolina, 2010Heat Advisories in Georgia, 2010Every heat advisory in 2010

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.