Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Charleston, SC

March 3, 2012Beaufort County, South Carolina

NWS Charleston, SC issued this special weather statement at Mar 3, 2012, 11:45 AM EST for Beaufort County, South Carolina. It was in force for 30 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: Mar 3, 2012, 11:45 AM EST (16:45 UTC)
Expired: Mar 3, 2012, 12:15 PM EST
In force: 30 min
Issued by: NWS Charleston, SC

County Beaufort County, SC

The radar

The Charleston,SC radar (KCLX), 56 km from the middle of the area, began a volume at 16:46 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, 4.8 hours before the alert went out and 71 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: 279 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 685 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

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 Mar 3, 11:22 AM EST, 23 minutes earlier.

Area forecast discussion, Mar 3, 11:22 AM EST, 23 minutes before

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Hazardous weather outlook, Mar 3, 4:59 AM EST, 6 hours 46 minutes before

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In the hours before

Local storm report, Mar 3, 11:39 AM EST, 6 minutes before

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Local storm report, Mar 3, 11:45 AM EST, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1145 AM EST SAT MAR 03 2012

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

1104 AM     TSTM WND DMG     RINCON                  32.30N  81.24W
03/03/2012                   EFFINGHAM          GA   911 CALL CENTER

            LAW ENFORCEMENT REPORTED 1 TREE DOWN IN RINCON GEORGIA.

&&

EVENT NUMBER CHS1200031

DPB

Special weather statement, Mar 3, 11:45 AM EST, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1145 AM EST SAT MAR 3 2012

SCZ047>049-051-031715-
BEAUFORT-COASTAL COLLETON-COASTAL JASPER-INLAND JASPER-
1145 AM EST SAT MAR 3 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF JASPER...COLLETON AND
BEAUFORT COUNTIES THROUGH 1215 PM EST...

AT 1137 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...NEAR LAUREL BAY...MOVING EAST AT 35 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
BEAUFORT...BEAUFORT MARINE CORPS AIR STATION...BENNETTS POINT...
BURTON...CLARENDON...LADYS ISLAND...LAUREL BAY...LEMON ISLAND...
PARRIS ISLAND...PORT ROYAL AND SHELL POINT...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 30 TO 40 MPH...
UP TO DIME TO NICKEL SIZE HAIL...

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.

&&

LAT...LON 3235 8043 3234 8044 3234 8084 3252 8087
      3261 8044 3249 8043 3248 8047 3245 8047
      3243 8046 3243 8044 3241 8042
TIME...MOT...LOC 1644Z 261DEG 32KT 3245 8073

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 3, 3:34 AM EST	Gale Watch	CHS		13 hr
Mar 3, 11:03 AM EST	Tornado Warning	CHS	Effingham	27 min
Mar 3, 12:58 PM EST	Severe Thunderstorm Warning	CHS	Bryan, Liberty, Long, McIntosh	47 min
Mar 3, 1:00 PM EST	Special Marine Warning	CHS		90 min
Mar 3, 1:41 PM EST	Tornado Warning	CHS	Liberty, McIntosh	49 min
Mar 3, 1:52 PM EST	Tornado Warning	CHS	Bryan, Chatham, Liberty	38 min
Mar 3, 2:17 PM EST	Special Marine Warning	CHS		88 min
Mar 3, 2:30 PM EST	Special Marine Warning	CHS		2 hr
Mar 3, 2:50 PM EST	Severe Thunderstorm Warning	CHS	McIntosh	40 min
Mar 3, 3:53 PM EST	Special Marine Warning	CHS		37 min
Mar 3, 4:28 PM EST	Special Marine Warning	CHS		62 min
Mar 3, 4:32 PM EST	Gale Warning	CHS		27 hr
Mar 3, 4:32 PM EST	Small Craft Advisory	CHS		41 hr
Mar 3, 8:48 AM EST	Severe Thunderstorm Warning	CHS	Allendale	27 min
Mar 3, 4:28 PM EST	Lake Wind Advisory	CHS	Berkeley	28 hr

Nearby

Special Weather Statements in South Carolina, 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.