Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 22, NWS Charleston, SC

March 16, 2012Berkeley County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Mar 16, 2012, 4:57 PM EDT for Berkeley County, South Carolina. It was in force for 63 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 16, 2012, 4:57 PM EDT (20:57 UTC)
Expired
Mar 16, 2012, 6:00 PM EDT
In force
63 min
Issued by
NWS Charleston, SC
Area
Storm-based polygon

County Berkeley County, SC

The radar

The Charleston,SC radar (KCLX), 102 km from the middle of the area, began a volume at 21:00 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, 9.0 hours before the alert went out and 43 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 12:00Z on 2012-03-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 473 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2012-03-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.1939Sfc1 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
473 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
920 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
37 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.

844 
WUUS52 KCHS 162057
SVRCHS
SCC015-162200-
/O.NEW.KCHS.SV.W.0022.120316T2057Z-120316T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
457 PM EDT FRI MAR 16 2012

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN BERKELEY COUNTY IN SOUTHEAST SOUTH CAROLINA...

* UNTIL 600 PM EDT

* AT 458 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM...11 MILES SOUTHWEST OF CROSS...MOVING EAST AT
  5 MPH.

  PREPARE NOW FOR THE FOLLOWING HAZARDS...
  DAMAGING WINDS IN EXCESS OF 60 MPH...
  HAIL UP TO QUARTER SIZE...

* SOME LOCATIONS IN THE WARNING INCLUDE...
  CROSS...PINOPOLIS...MONCKS CORNER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT HAIL...DOWNED TREES...LIMBS...AND POWER LINES DIRECTLY TO THE
CHARLESTON NATIONAL WEATHER SERVICE AT 1-888-383-2024.

&&

LAT...LON 3300 8010 3315 8032 3318 8029 3320 8034
      3325 8035 3327 8037 3328 8035 3327 8030
      3330 8026 3336 8024 3339 8025 3341 7985
      3338 7981
TIME...MOT...LOC 2058Z 287DEG 6KT 3320 8025

$$
1 follow-up statement
035 
WWUS52 KCHS 162120
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
520 PM EDT FRI MAR 16 2012

SCC015-162200-
/O.CON.KCHS.SV.W.0022.000000T0000Z-120316T2200Z/
BERKELEY SC-
520 PM EDT FRI MAR 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR WEST CENTRAL BERKELEY COUNTY...

AT 521 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM NEAR HUSSERTOWN...MOVING EAST AT 5
MPH.

PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
HAIL UP TO QUARTER SIZE...
TORRENTIAL RAIN WHICH MAY PRODUCE LOCALIZED FLOODING...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...COLLEGE
PARK...MONCKS CORNER...OLD SANTEE CANAL STATE PARK...PINOPOLIS...
SANGAREE AND SOUTHERN LAKE MOULTRIE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. MOVE INDOORS
IMMEDIATELY. IF THERE IS NO SAFE SHELTER AVAILABLE...STAY AWAY FROM
ISOLATED HIGH OBJECTS AND BODIES OF WATER. IF YOU CAN HEAR THUNDER...
YOU ARE WITHIN STRIKING DISTANCE.

&&

LAT...LON 3300 8010 3315 8032 3318 8029 3320 8034
      3322 8033 3327 8036 3328 8035 3327 8030
      3330 8026 3330 7987
TIME...MOT...LOC 2121Z 287DEG 6KT 3319 8021

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 16, 3:11 PM EDTSpecial Weather StatementCHSAllendale34 min
Mar 16, 3:45 PM EDTSpecial Weather StatementCHSAllendale30 min
Mar 16, 4:06 PM EDTSpecial Weather StatementCHSHampton24 min
Mar 16, 4:13 PM EDTSpecial Weather StatementCHSDorchester32 min
Mar 16, 4:22 PM EDTSevere Thunderstorm WarningCHSDorchester68 min
Mar 16, 4:25 PM EDTSevere Thunderstorm WarningCHSHampton, Jasper65 min
Mar 16, 4:34 PM EDTSpecial Weather StatementCHSBamberg26 min
Mar 16, 4:41 PM EDTSevere Thunderstorm WarningCHSColleton, Hampton64 min
Mar 16, 5:11 PM EDTSevere Thunderstorm WarningCHSColleton, Dorchester64 min
Mar 16, 5:16 PM EDTSevere Thunderstorm WarningCHSColleton59 min
Mar 16, 5:26 PM EDTSevere Thunderstorm WarningCHSAllendale, Hampton, Jasper64 min
Mar 16, 5:50 PM EDTSevere Thunderstorm WarningCHSBeaufort, Jasper55 min
Mar 16, 6:00 PM EDTSevere Thunderstorm WarningCHSBerkeley, Charleston, Colleton, Dorchester60 min
Mar 16, 6:47 PM EDTSpecial Weather StatementCHSColleton28 min
Mar 16, 6:48 PM EDTSpecial Weather StatementCHSJasper42 min
Mar 16, 7:14 PM EDTSpecial Weather StatementCHSJasper31 min
Mar 16, 7:43 PM EDTSpecial Weather StatementCHSBeaufort47 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2012Every severe thunderstorm warning 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.