Alert archive / Georgia / Heat Advisories in 2011
Heat Advisory 20, NWS Charleston, SC
NWS Charleston, SC issued this heat advisory at Aug 5, 2011, 3:43 PM EDT for 8 counties in Georgia; 5 counties in South Carolina. It took effect at Aug 6, 2011, 12:00 PM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Aug 5, 2011, 3:43 PM EDT (19:43 UTC)
- In effect from
- Aug 6, 2011, 12:00 PM EDT
- Expired
- Aug 6, 2011, 6:13 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, 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 19:44 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, 7.7 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.
- Mixed-layer CAPE
- 1635 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 1159 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Aug 5, 2:19 PM EDT, 1 hour 24 minutes earlier.
Area forecast discussion, Aug 5, 2:19 PM EDT, 1 hour 24 minutes before
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</html>Hazardous weather outlook, Aug 5, 4:20 AM EDT, 11 hours 23 minutes before
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</html>In the hours before
Special weather statement, Aug 5, 3:41 PM EDT, 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
341 PM EDT FRI AUG 5 2011
SCZ045-052-052015-
INLAND BERKELEY-TIDAL BERKELEY-
341 PM EDT FRI AUG 5 2011
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF BERKELEY COUNTY
THROUGH 415 PM EDT...
AT 340 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...NEAR CORDESVILLE...MOVING NORTHEAST AT 10 MPH.
SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
HUGER...JAMESTOWN...MONCKS CORNER AND OLD SANTEE CANAL STATE PARK...
PREPARE NOW FOR THE FOLLOWING HAZARDS...
FREQUENT CLOUD TO GROUND LIGHTNING...
TORRENTIAL RAIN WHICH MAY PRODUCE LOCALIZED FLOODING...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FREQUENT CLOUD-TO-GROUND LIGHTNING IS OCCURRING. POSTPONE OUTDOOR
ACTIVITIES PROMPTLY. SEEK SHELTER INSIDE AN ENCLOSED BUILDING.
BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
BE READY TO TAKE IMMEDIATE ACTION IN CASE A SEVERE THUNDERSTORM
WARNING IS ISSUED FOR YOUR LOCATION.
&&
LAT...LON 3302 7996 3318 8006 3338 7981 3338 7979
3334 7976 3332 7974 3332 7970 3330 7967
3328 7957 3324 7949
TIME...MOT...LOC 1941Z 242DEG 9KT 3314 7991The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 3:41 PM EDT | Special Weather Statement | CHS | Berkeley | 34 min |
| Aug 5, 4:08 PM EDT | Special Weather Statement | CHS | Berkeley | 37 min |
| Aug 5, 7:04 PM EDT | Special Weather Statement | CHS | Colleton, Dorchester | 26 min |
| Aug 5, 7:21 PM EDT | Severe Thunderstorm Warning | CHS | Colleton, Dorchester | 54 min |
Nearby
Heat Advisories in Georgia, 2011Heat Advisories in South Carolina, 2011Every 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.