Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Charleston, SC

December 17, 2012Long County, Georgia

NWS Charleston, SC issued this special weather statement at Dec 17, 2012, 3:09 PM EST for Long County, Georgia. It was in force for 36 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: Dec 17, 2012, 3:09 PM EST (20:09 UTC)
Expired: Dec 17, 2012, 3:45 PM EST
In force: 36 min
Issued by: NWS Charleston, SC

County Long County, GA

The radar

The Charleston,SC radar (KCLX), 109 km from the middle of the area, began a volume at 20:09 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, 8.2 hours before the alert went out and 160 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 620 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 158 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 Dec 17, 2:25 PM EST, 44 minutes earlier.

Area forecast discussion, Dec 17, 2:25 PM EST, 44 minutes before

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Hazardous weather outlook, Dec 17, 2:03 PM EST, 1 hour 6 minutes before

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In the hours before

Local storm report, Dec 17, 3:04 PM EST, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
304 PM EST MON DEC 17 2012

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

0245 PM     TSTM WND DMG     7 S REGISTER            32.27N  81.88W
12/17/2012                   BULLOCH            GA   911 CALL CENTER

            BULLOCH COUNTY 911 CALL CENTER REPORTED A TREE DOWN ON
            A POWERLINE ON HIGHWAY 301 SOUTH.

&&

EVENT NUMBER CHS1200853

BDC

Special weather statement, Dec 17, 3:09 PM EST, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
309 PM EST MON DEC 17 2012

GAZ116-137-138-172045-
INLAND BRYAN-INLAND LIBERTY-LONG-
309 PM EST MON DEC 17 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF LIBERTY...BRYAN AND
LONG COUNTIES THROUGH 345 PM EST...

AT 304 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...16 MILES WEST OF LETFORD...MOVING EAST AT 55
MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
FORT STEWART...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ALTHOUGH LITTLE OR NO LIGHTNING IS OCCURRING...THIS STORM IS CAPABLE
OF PRODUCING GUSTY WINDS WHICH MAY BLOW OVER TENTS...OUTDOOR
FURNITURE...AND HANGING OBJECTS. IF TIME PERMITS SECURE VULNERABLE
OBJECTS AND GO INSIDE A STURDY SHELTER.

A TORNADO WATCH IS ALSO IN EFFECT. THUNDERSTORMS CAN PRODUCE
TORNADOES SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. BE ALERT
FOR RAPIDLY CHANGING WEATHER CONDITIONS AND BE READY TO ACT QUICKLY
IF SEVERE WEATHER IS OBSERVED OR A WARNING IS ISSUED.

&&

LAT...LON 3183 8195 3185 8192 3188 8192 3189 8189
      3197 8188 3197 8186 3202 8182 3202 8181
      3205 8176 3212 8147 3188 8146 3181 8195
TIME...MOT...LOC 2009Z 260DEG 49KT 3200 8180

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 17, 3:37 AM EST	Small Craft Advisory	CHS		39 hr
Dec 17, 2:46 PM EST	Severe Thunderstorm Warning	CHS	Bryan, Bulloch, Effingham	44 min
Dec 17, 3:20 PM EST	Special Weather Statement	CHS	Long	25 min
Dec 17, 3:31 PM EST	Special Weather Statement	CHS	Bryan, Chatham	29 min
Dec 17, 3:41 PM EST	Special Weather Statement	CHS	Liberty, McIntosh	49 min
Dec 17, 3:47 PM EST	Severe Thunderstorm Warning	CHS	Bryan, Chatham	34 min
Dec 17, 4:01 PM EST	Special Marine Warning	CHS		119 min
Dec 17, 4:19 PM EST	Special Marine Warning	CHS		116 min
Dec 17, 3:57 PM EST	Severe Thunderstorm Warning	CHS	Beaufort, Charleston, Colleton, Jasper	63 min
Dec 17, 4:42 PM EST	Severe Thunderstorm Warning	CHS	Berkeley, Charleston	52 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.