Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Charleston, SC

July 6, 2012Chatham County, Georgia

NWS Charleston, SC issued this special weather statement at Jul 6, 2012, 1:36 PM EDT for Chatham County, Georgia. It was in force for 24 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: Jul 6, 2012, 1:36 PM EDT (17:36 UTC)
Expired: Jul 6, 2012, 2:00 PM EDT
In force: 24 min
Issued by: NWS Charleston, SC

County Chatham County, GA

The radar

The Charleston,SC radar (KCLX), 76 km from the middle of the area, began a volume at 17:37 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, 5.6 hours before the alert went out and 152 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: 366 J/kg
Mixed-layer CIN: -183 J/kg
Mixed-layer LCL: 1364 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: -8 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 6, 10:40 AM EDT, 2 hours 56 minutes earlier.

Area forecast discussion, Jul 6, 10:40 AM EDT, 2 hours 56 minutes before

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Hazardous weather outlook, Jul 6, 3:48 AM EDT, 9 hours 48 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
348 AM EDT FRI JUL 6 2012

AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040-
042>045-047>052-070800-
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-
348 AM EDT FRI JUL 6 2012

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

.DAY ONE...TODAY AND TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Jul 6, 10:25 AM EDT, 3 hours 11 minutes before

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Local storm report, Jul 6, 12:22 PM EDT, 1 hour 14 minutes before

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Local storm report, Jul 6, 12:34 PM EDT, 1 hour 2 minutes before

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Local storm report, Jul 6, 12:50 PM EDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1250 PM EDT FRI JUL 06 2012

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

0955 PM     TSTM WND DMG     1 E ROCKY FORD          32.66N  81.81W
07/05/2012                   SCREVEN            GA   LAW ENFORCEMENT

            TREES AND POWER LINES WERE BLOWN DOWN NEAR THE
            INTERSECTION OF SCARBORO HIGHWAY AND DIXON BRANCH ROAD.
            TIME WAS ESTIMATED FROM RADAR.

&&

EVENT NUMBER CHS1200471

SPR

Local storm report, Jul 6, 12:51 PM EDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1251 PM EDT FRI JUL 06 2012

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

0929 PM     TSTM WND DMG     3 N WOODCLIFF           32.79N  81.75W
07/05/2012                   SCREVEN            GA   LAW ENFORCEMENT

            TREES WERE BLOWN DOWN ALONG BAY BRANCH ROAD. TIME WAS
            ESTIMATED FROM RADAR.

&&

EVENT NUMBER CHS1200472

SPR

Special weather statement, Jul 6, 1:36 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
136 PM EDT FRI JUL 6 2012

GAZ118-119-061800-
COASTAL CHATHAM-INLAND CHATHAM-
136 PM EDT FRI JUL 6 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CHATHAM COUNTY
THROUGH 200 PM EDT...

AT 133 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...NEAR GEORGETOWN...MOVING NORTHEAST AT 10 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
BLOOMINGDALE...GARDEN CITY...HUTCHINSON ISLAND...I-16/I-95
INTERCHANGE...ISLE OF HOPE...MEINHARD...MONTEITH...MONTGOMERY...
POOLER...PORT WENTWORTH...SANDFLY...SAVANNAH...SAVANNAH AIRPORT...
SAVANNAH HISTORIC DISTRICT...SKIDAWAY ISLAND...THUNDERBOLT...
VERNONBURG...WHITE BLUFF...WILMINGTON ISLAND AND WINDSOR FOREST...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 45 MPH...
DIME SIZE HAIL...
FREQUENT CLOUD TO GROUND LIGHTNING...
TORRENTIAL RAIN WHICH MAY PRODUCE LOCALIZED FLOODING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HAVE AN ACTION PLAN READY IN THE EVENT THIS STORM STRENGTHENS OR A
WARNING IS ISSUED. CONTINUE TO MONITOR NOAA WEATHER RADIO ALL HAZARDS
FOR THE LATEST WEATHER INFORMATION.

&&

LAT...LON 3190 8117 3189 8122 3191 8122 3189 8124
      3191 8124 3191 8126 3193 8126 3194 8129
      3200 8130 3205 8137 3210 8139 3221 8118
      3215 8112 3212 8112 3208 8105 3197 8095
      3186 8114
TIME...MOT...LOC 1736Z 231DEG 8KT 3202 8126

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 8:43 PM EDT	Special Weather Statement	CHS	Screven	32 min
Jul 5, 9:07 PM EDT	Severe Thunderstorm Warning	CHS	Jenkins, Screven	53 min
Jul 5, 10:02 PM EDT	Special Weather Statement	CHS	Bulloch, Candler	43 min
Jul 6, 1:46 PM EDT	Special Weather Statement	CHS	Bryan	29 min
Jul 6, 1:55 PM EDT	Special Weather Statement	CHS	Chatham	50 min
Jul 6, 2:17 PM EDT	Special Weather Statement	CHS	Effingham	28 min
Jul 6, 2:22 PM EDT	Severe Thunderstorm Warning	CHS	Bryan, Bulloch, Chatham, Effingham	38 min
Jul 6, 2:26 PM EDT	Special Weather Statement	CHS	Liberty	34 min
Jul 6, 2:30 PM EDT	Special Weather Statement	CHS	Evans	30 min
Jul 6, 3:27 PM EDT	Special Weather Statement	CHS	Liberty	33 min
Jul 6, 2:31 PM EDT	Special Weather Statement	CHS	Jasper	29 min
Jul 6, 2:37 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort, Jasper	53 min

Nearby

Special Weather Statements in Georgia, 2012 Every special weather statement in 2012

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.