Alert archive / South Carolina / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 121, NWS Charleston, SC

September 4, 2013Berkeley County, Charleston County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Sep 4, 2013, 3:26 PM EDT for Berkeley County, Charleston County, South Carolina. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 4, 2013, 3:26 PM EDT (19:26 UTC)
Expired: Sep 4, 2013, 4:30 PM EDT
In force: 64 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon

Counties Berkeley County, SC, Charleston County, SC

The radar

The Charleston,SC radar (KCLX), 108 km from the middle of the area, began a volume at 19:26 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

Jacksonville, FL (KJAX), launched 12:00Z, 7.4 hours before the alert went out and 321 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: 1661 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 848 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 0 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 severe thunderstorm 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 severe thunderstorm warning went out at Sep 4, 1:57 PM EDT, 1 hour 29 minutes earlier.

Area forecast discussion, Sep 4, 1:57 PM EDT, 1 hour 29 minutes before

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Hazardous weather outlook, Sep 4, 3:20 AM EDT, 12 hours 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
320 AM EDT WED SEP 4 2013

AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040-
042>045-047>052-050730-
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-COASTAL BRYAN-INLAND CHATHAM-COASTAL CHATHAM-LONG-
INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-COASTAL MCINTOSH-
ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY-
INLAND JASPER-BEAUFORT-COASTAL COLLETON-CHARLESTON-COASTAL JASPER-
TIDAL BERKELEY-
320 AM EDT WED SEP 4 2013

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

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME.

In the hours before

Special weather statement, Sep 4, 2:38 PM EDT, 48 minutes before

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Special weather statement, Sep 4, 3:16 PM EDT, 10 minutes before

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Special weather statement, Sep 4, 3:18 PM EDT, 8 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
Sep 3, 8:10 PM EDT	Special Weather Statement	CHS	Hampton	35 min
Sep 3, 8:49 PM EDT	Special Weather Statement	CHS	Hampton	41 min
Sep 3, 10:18 PM EDT	Special Marine Warning	CHS		57 min
Sep 4, 3:41 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort, Jasper	64 min
Sep 4, 3:47 PM EDT	Areal Flood Advisory	CHS	Jasper	88 min
Sep 4, 4:40 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Charleston	65 min
Sep 4, 5:12 PM EDT	Areal Flood Advisory	CHS	Berkeley, Charleston	93 min
Sep 4, 5:15 PM EDT	Special Weather Statement	CHS	Charleston	30 min
Sep 4, 5:41 PM EDT	Severe Thunderstorm Warning	CHS	Charleston, Dorchester	64 min
Sep 4, 6:38 PM EDT	Special Weather Statement	CHS	Colleton	37 min
Sep 4, 7:02 PM EDT	Areal Flood Advisory	CHS	Charleston	88 min
Sep 3, 9:07 PM EDT	Special Weather Statement	CHS	Effingham, Screven	38 min
Sep 4, 2:38 PM EDT	Special Weather Statement	CHS	Chatham	37 min
Sep 4, 3:16 PM EDT	Special Weather Statement	CHS	Chatham	29 min
Sep 4, 3:18 PM EDT	Special Weather Statement	CHS	Bulloch	27 min
Sep 4, 3:50 PM EDT	Special Weather Statement	CHS	Jenkins	25 min
Sep 4, 4:01 PM EDT	Special Weather Statement	CHS	McIntosh	29 min
Sep 4, 4:09 PM EDT	Special Weather Statement	CHS	Chatham	36 min
Sep 4, 4:14 PM EDT	Special Weather Statement	CHS	Chatham	31 min
Sep 4, 4:50 PM EDT	Special Weather Statement	CHS	Effingham	25 min
Sep 4, 5:19 PM EDT	Special Weather Statement	CHS	Chatham	26 min
Sep 4, 5:33 PM EDT	Severe Thunderstorm Warning	CHS	Bryan, Chatham	57 min
Sep 4, 6:13 PM EDT	Special Weather Statement	CHS	Candler	32 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2013 Every severe thunderstorm warning in 2013

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.