Alert archive / Georgia / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 213, NWS Charleston, SC

July 5, 2009Jenkins County, Screven County, Georgia; Allendale County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Jul 5, 2009, 9:38 PM EDT for Jenkins County, Screven County, Georgia; Allendale County, South Carolina. It was in force for 67 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
Jul 5, 2009, 9:38 PM EDT (01:38 UTC)
Expired
Jul 5, 2009, 10:45 PM EDT
In force
67 min
Issued by
NWS Charleston, SC
Area
Storm-based polygon

Counties Jenkins County, GA, Screven County, GA, Allendale County, SC

The radar

The Charleston,SC radar (KCLX), 60 km from the middle of the area, began a volume at 01:38 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, 1.6 hours before the alert went out and 154 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 2009-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1104 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 2009-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.193958Sfc1 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
1104 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
1349 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
102 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 Jul 5, 8:04 PM EDT, 1 hour 34 minutes earlier.

Area forecast discussion, Jul 5, 8:04 PM EDT, 1 hour 34 minutes before
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Hazardous weather outlook, Jul 5, 9:38 PM EDT, 0 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CHARLESTON SC
938 PM EDT SUN JUL 5 2009

AMZ330-350-352-GAZ087-088-099>101-114-115-SCZ040-042>045-047>051-
060930-
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-JENKINS-SCREVEN-
CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS-ALLENDALE-HAMPTON-
INLAND COLLETON-DORCHESTER-BERKELEY-INLAND JASPER-BEAUFORT-
COASTAL COLLETON-CHARLESTON-COASTAL JASPER-
938 PM EDT SUN JUL 5 2009

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

.DAY ONE...TONIGHT.

SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP TONIGHT
IN ASSOCIATION WITH A COLD FRONT APPROACHING FROM THE NORTHWEST...
UPPER LEVEL DISTURBANCES MOVING THROUGH FROM THE WEST...AND
VARIOUS SURFACE AND LOW LEVEL BOUNDARIES FROM EARLIER CONVECTION
TO INTERACT ACROSS THE AREA. SOME OF THE THUNDERSTORMS COULD BE
SEVERE...WITH DAMAGING STRAIGHT LINE WINDS THE PRIMARY THREAT. ONE
OR TWO OF THE STORMS MAY ALSO PRODUCE A TORNADO....ESPECIALLY FROM
ALLENDALE AND HAMPTON COUNTIES TO COLLETON...DORCHESTER...BERKELEY
AND CHARLESTON COUNTIES. LARGE HAIL APPEARS UNLIKELY...BUT IS NOT
ENTIRELY IMPOSSIBLE.

STORMS WILL WEAKEN AS THEY MOVE OVER THE COASTAL WATERS...BUT
STRONG WINDS ARE POSSIBLE...ESPECIALLY ACROSS THE CHARLESTON
COUNTY WATERS AND THE WATERS BEYOND 20 NM OFF THE COAST OF SOUTH
CAROLINA.

STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS...TV OR YOUR LOCAL
NEWS SOURCE FOR THE LATEST WEATHER INFORMATION FROM THE NATIONAL
WEATHER SERVICE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

SEVERE THUNDERSTORMS...A FRONTAL BOUNDARY ALONG WITH AN UNSTABLE
AIRMASS COULD RESULT IN ISOLATED SEVERE THUNDERSTORMS AGAIN ON
MONDAY ACROSS SOUTHERN SOUTH CAROLINA AND SOUTHEAST GEORGIA. THE
MAIN HAZARDS FROM THE STRONGEST THUNDERSTORMS ARE EXPECTED TO BE
DAMAGING WIND GUSTS...MARGINALLY SEVERE HAIL...AND LOCALLY HEAVY
RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER GROUPS AND EMERGENCY MANAGEMENT OFFICIALS SHOULD BE PREPARED
FOR POSSIBLE ACTIVATION TONIGHT.

AMZ354-374-GAZ116>119-137>141-060930-
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-INLAND BRYAN-COASTAL BRYAN-INLAND CHATHAM-COASTAL CHATHAM-LONG-
INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-COASTAL MCINTOSH-
938 PM EDT SUN JUL 5 2009

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

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

SEVERE THUNDERSTORMS...A FRONTAL BOUNDARY ALONG WITH AN UNSTABLE
AIRMASS COULD RESULT IN ISOLATED SEVERE THUNDERSTORMS AGAIN ON
MONDAY ACROSS SOUTHERN SOUTH CAROLINA AND SOUTHEAST GEORGIA. THE
MAIN HAZARDS FROM THE STRONGEST THUNDERSTORMS ARE EXPECTED TO BE
DAMAGING WIND GUSTS...MARGINALLY SEVERE HAIL...AND LOCALLY HEAVY
RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

33

In the hours before

Special weather statement, Jul 5, 6:24 PM EDT, 3 hours 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
624 PM EDT SUN JUL 5 2009

SCZ045-052315-
BERKELEY-
624 PM EDT SUN JUL 5 2009

...STRONG THUNDERSTORMS WILL IMPACT NORTHERN BERKELEY COUNTY THROUGH
715 PM EDT...

AT 622 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING PEA SIZE HAIL...AND
GUSTY WINDS OF 35 TO 45 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM WILSONS LANDING TO BLACK CREEK...OR ALONG A LINE
EXTENDING FROM 13 MILES SOUTH OF MANNING TO 14 MILES NORTHEAST OF
INDIAN FIELD...MOVING EAST AT 30 MPH.

AREAS IN AND AROUND WILSONS LANDING...PRIOLEAU...EADYTOWN...
MOOREFIELD...CROSS...PINEVILLE...JUDGE TOWN...RUSSELLVILLE...SOUTHERN
LAKE MOULTRIE...WILL BE IMPACTED THROUGH 715 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS ARE EXPECTED TO IMPACT LAKE MOULTRIE. BOATERS SHOULD
SEEK SAFE HARBOR IMMEDIATELY. IF CAUGHT ON THE OPEN WATERS...STAY AS
LOW AS POSSIBLE AND WEAR A PERSONAL FLOATATION DEVICE. SWIMMERS
SHOULD GET OUT OF THE WATER AND INTO A STURDY BUILDING. REMEMBER...IF
YOU CAN HEAR THUNDER YOU ARE AT RISK OF BEING STRUCK BY LIGHTNING.

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.

&&

33
Local storm report, Jul 5, 6:40 PM EDT, 2 hours 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
640 PM EDT SUN JUL 05 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0636 PM     TSTM WND GST     PINEVILLE               33.43N 80.03W
07/05/2009  M48 MPH          BERKELEY           SC   OFFICIAL NWS OBS

&&

33
Special weather statement, Jul 5, 7:54 PM EDT, 1 hour 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
754 PM EDT SUN JUL 5 2009

GAZ099-100-114>116-137-138-060100-
BULLOCH-CANDLER-EVANS-INLAND BRYAN-INLAND LIBERTY-LONG-TATTNALL-
754 PM EDT SUN JUL 5 2009

...STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN LIBERTY...WESTERN
BRYAN...BULLOCH...CANDLER...TATTNALL...EVANS AND NORTHWESTERN LONG
COUNTIES THROUGH 900 PM EDT...

AT 753 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING GUSTY WINDS OF 35
TO 45 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 16
MILES NORTHWEST OF ALINE TO ALTAMAHA...OR ALONG A LINE EXTENDING FROM
6 MILES SOUTH OF SWAINSBORO TO 6 MILES EAST OF PLANT HATCH...MOVING
EAST AT 25 MPH.

AREAS IN AND AROUND ALTAMAHA...REIDSVILLE...ALINE...FIVE POINTS...
FIVE POINTS...HUGHLAND...TISON...OLIFFTOWN...METTER...WILL BE
IMPACTED THROUGH 900 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

33
Special weather statement, Jul 5, 7:58 PM EDT, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
758 PM EDT SUN JUL 5 2009

GAZ100-101-115-116-060100-
BULLOCH-EFFINGHAM-EVANS-INLAND BRYAN-
758 PM EDT SUN JUL 5 2009

...STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN BRYAN...SOUTHEASTERN
BULLOCH...SOUTHERN EFFINGHAM AND EAST CENTRAL EVANS COUNTIES THROUGH
900 PM EDT...

AT 757 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING GUSTY WINDS OF 35
TO 45 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
GRIMSHAW TO GROVELAND...OR ALONG A LINE EXTENDING FROM 6 MILES
SOUTHEAST OF STATESBORO TO 8 MILES WEST OF PEMBROKE...MOVING EAST AT
25 MPH.

AREAS IN AND AROUND GRIMSHAW...DENMARK...BROOKLET...LEEFIELD...
ARCOLA...PEMBROKE AND STILSON WILL BE IMPACTED THROUGH 900 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

33
Special weather statement, Jul 5, 9:04 PM EDT, 34 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
904 PM EDT SUN JUL 5 2009

GAZ101-SCZ042-047-051-060145-
COASTAL JASPER-EFFINGHAM-HAMPTON-INLAND JASPER-
904 PM EDT SUN JUL 5 2009

...STRONG THUNDERSTORMS WILL IMPACT WEST CENTRAL JASPER...
SOUTHWESTERN HAMPTON AND NORTHERN EFFINGHAM COUNTIES THROUGH 945 PM
EDT...

AT 904 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING GUSTY WINDS OF 35
TO 45 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 13
MILES NORTHWEST OF SPRINGFIELD TO SPRINGFIELD...MOVING EAST AT 20 MPH.

AREAS IN AND AROUND EGYPT...GRIFFIN LAKE...KILDARE...SPRINGFIELD...
SHAWNEE...OAKY...STILLWELL...WILL BE IMPACTED THROUGH 945 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

PLEASE CONTACT THE NATIONAL WEATHER SERVICE IN CHARLESTON TOLL FREE
AT 1-888-383-2024 IF YOU OBSERVE SEVERE WEATHER SUCH AS HAIL...DOWNED
TREES...LIMBS AND POWER LINES.

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 3:23 AM EDTSpecial Marine WarningCHS94 min
Jul 6, 3:52 AM EDTSmall Craft AdvisoryCHS31 hr
Jul 6, 1:05 PM EDTSpecial Marine WarningCHS55 min
Jul 6, 2:19 PM EDTSpecial Marine WarningCHS41 min
Jul 6, 4:42 PM EDTSpecial Marine WarningCHS99 min
Jul 5, 9:53 PM EDTSevere Thunderstorm WarningCHSAllendale, Berkeley, Colleton, Dorchester52 min
Jul 5, 10:14 PM EDTTornado WarningCHSAllendale, Hampton30 min
Jul 5, 10:41 PM EDTSevere Thunderstorm WarningCHSAllendale, Colleton, Dorchester, Hampton64 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2009Severe Thunderstorm Warnings in South Carolina, 2009Every severe thunderstorm warning in 2009

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.