Alert archive / South Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Charleston, SC

September 27, 2011Berkeley County, South Carolina

NWS Charleston, SC issued this special weather statement at Sep 27, 2011, 8:49 PM EDT for Berkeley County, South Carolina. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 27, 2011, 8:49 PM EDT (00:49 UTC)
Expired
Sep 27, 2011, 9:15 PM EDT
In force
26 min
Issued by
NWS Charleston, SC

County Berkeley County, SC

The radar

The Charleston,SC radar (KCLX), 127 km from the middle of the area, began a volume at 00:51 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, 0.8 hours before the alert went out and 33 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, Charleston AFB, SC at 00:00Z on 2011-09-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3045 joules per kilogram.LCLLFCEL10008507005003002001001 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, Charleston AFB, SC at 00:00Z on 2011-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
3045 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
650 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Sep 27, 7:57 PM EDT, 52 minutes earlier.

Area forecast discussion, Sep 27, 7:57 PM EDT, 52 minutes before
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Hazardous weather outlook, Sep 27, 4:06 PM EDT, 4 hours 43 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
406 PM EDT TUE SEP 27 2011

AMZ330-350-352-354-374-GAZ087-088-099>101-114>116-118-137-138-140-
SCZ040-042>045-047-052-281000-
CHARLESTON HARBOR-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM...INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-JENKINS-SCREVEN-CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS-
INLAND BRYAN-INLAND CHATHAM-LONG-INLAND LIBERTY-INLAND MCINTOSH-
ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY-
INLAND JASPER-TIDAL BERKELEY-
406 PM EDT TUE SEP 27 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL
WATERS...SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

GAZ117-119-139-141-SCZ048>051-281000-
COASTAL BRYAN-COASTAL CHATHAM-COASTAL LIBERTY-COASTAL MCINTOSH-
BEAUFORT-COASTAL COLLETON-CHARLESTON-COASTAL JASPER-
406 PM EDT TUE SEP 27 2011

...MODERATE RISK FOR RIP CURRENTS IN EFFECT THROUGH WEDNESDAY
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST GEORGIA AND
SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   MODERATE RISK FOR RIP CURRENTS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   MODERATE RISK FOR RIP CURRENTS.

COASTAL FLOODING...ELEVATED TIDES WILL CONTINUE THROUGH THE WEEK
ACROSS NORTH COASTAL GEORGIA AND SOUTH COASTAL SOUTH CAROLINA.
COASTAL FLOOD ADVISORIES MAY EVENTUALLY BE REQUIRED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Sep 27, 8:11 PM EDT, 38 minutes before
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Special weather statement, Sep 27, 8:31 PM EDT, 18 minutes before
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Local storm report, Sep 27, 8:34 PM EDT, 15 minutes before
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Special weather statement, Sep 27, 8:34 PM EDT, 15 minutes before
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Local storm report, Sep 27, 8:46 PM EDT, 3 minutes before
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Special weather statement, Sep 27, 8:49 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 27, 11:13 PM EDTSpecial Weather StatementCHSJenkins, Screven32 min
Sep 27, 11:48 PM EDTSpecial Weather StatementCHSEvans42 min
Sep 27, 11:57 PM EDTSpecial Weather StatementCHSScreven33 min
Sep 28, 12:22 AM EDTSpecial Weather StatementCHSBulloch38 min
Sep 28, 12:45 AM EDTSevere Thunderstorm WarningCHSBulloch, Effingham, Screven60 min
Sep 28, 1:16 AM EDTSevere Thunderstorm WarningCHSBulloch, Effingham, Screven59 min
Sep 28, 2:44 AM EDTSpecial Marine WarningCHS2 hr
Sep 28, 4:24 AM EDTCoastal Flood AdvisoryCHS7 hr
Sep 28, 5:08 AM EDTSpecial Marine WarningCHS2 hr
Sep 28, 6:26 PM EDTSpecial Weather StatementCHSEffingham34 min
Sep 27, 8:11 PM EDTSpecial Weather StatementCHSBerkeley, Dorchester34 min
Sep 27, 8:31 PM EDTSpecial Weather StatementCHSBerkeley29 min
Sep 27, 8:34 PM EDTSpecial Weather StatementCHSColleton26 min
Sep 27, 11:38 PM EDTSpecial Weather StatementCHSAllendale52 min
Sep 28, 12:27 AM EDTSpecial Weather StatementCHSAllendale48 min
Sep 28, 1:42 AM EDTSevere Thunderstorm WarningCHSBeaufort, Colleton, Hampton, Jasper63 min
Sep 28, 2:42 AM EDTSevere Thunderstorm WarningCHSBeaufort, Charleston, Colleton48 min
Sep 28, 7:17 AM EDTSpecial Weather StatementCHSBerkeley43 min
Sep 28, 3:27 PM EDTSpecial Weather StatementCHSBerkeley48 min
Sep 28, 4:02 PM EDTSpecial Weather StatementCHSAllendale28 min
Sep 28, 4:12 PM EDTSpecial Weather StatementCHSGeorgetown48 min
Sep 28, 4:14 PM EDTSpecial Weather StatementCHSAllendale31 min
Sep 28, 4:56 PM EDTSpecial Weather StatementCHSBerkeley49 min
Sep 28, 5:08 PM EDTAreal Flood AdvisoryCHSCharleston32 min
Sep 28, 5:14 PM EDTSpecial Weather StatementCHSBamberg46 min
Sep 28, 5:23 PM EDTSevere Thunderstorm WarningCHSColleton, Dorchester67 min
Sep 28, 6:22 PM EDTSevere Thunderstorm WarningCHSBerkeley, Dorchester53 min
Sep 28, 7:49 PM EDTSpecial Weather StatementCHSBerkeley26 min

Nearby

Special Weather Statements in South Carolina, 2011Every special weather statement 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.