Alert archive / South Carolina / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 80, NWS Charleston, SC

June 27, 2010Berkeley County, Charleston County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Jun 27, 2010, 5:33 PM EDT for Berkeley County, Charleston County, South Carolina. It was in force for 57 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: Jun 27, 2010, 5:33 PM EDT (21:33 UTC)
Expired: Jun 27, 2010, 6:30 PM EDT
In force: 57 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon

Counties Berkeley County, SC, Charleston County, SC

The radar

The Charleston,SC radar (KCLX), 108 km from the middle of the area, began a volume at 21:36 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, 9.6 hours before the alert went out and 321 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: 2360 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 868 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: 9 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 Jun 27, 3:53 PM EDT, 1 hour 40 minutes earlier.

Area forecast discussion, Jun 27, 3:53 PM EDT, 1 hour 40 minutes before

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Hazardous weather outlook, Jun 27, 4:21 PM EDT, 1 hour 12 minutes before

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In the hours before

Special weather statement, Jun 27, 3:27 PM EDT, 2 hours 6 minutes before

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Special weather statement, Jun 27, 4:11 PM EDT, 1 hour 22 minutes before

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Special weather statement, Jun 27, 4:24 PM EDT, 1 hour 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
424 PM EDT SUN JUN 27 2010

SCZ045-272100-
INLAND BERKELEY-
424 PM EDT SUN JUN 27 2010

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF BERKELEY COUNTY
THROUGH 500 PM EDT...

AT 424 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...NEAR NEWLAND...MOVING NORTHEAST AT 5 MPH.

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. IF
OUTDOORS...STAY AWAY FROM ISOLATED TALL OBJECTS. IF INDOORS...STAY
AWAY FROM WINDOWS AND DOORS. AVOID USING PLUMBING AND ELECTRICAL
APPLIANCES UNLESS IT IS AN EMERGENCY.

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 3322 7944 3319 7948 3315 7952 3316 7957
      3313 7963 3311 7964 3317 7973 3330 7964
      3328 7958 3325 7952 3325 7949
TIME...MOT...LOC 2025Z 219DEG 5KT 3319 7958

Special weather statement, Jun 27, 4:31 PM EDT, 1 hour 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
431 PM EDT SUN JUN 27 2010

SCZ045-052-272100-
INLAND BERKELEY-TIDAL BERKELEY-
431 PM EDT SUN JUN 27 2010

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF BERKELEY COUNTY
THROUGH 500 PM EDT...

AT 428 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...NEAR CARNES CROSSROAD...MOVING SOUTHEAST AT 15
MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
COLLEGE PARK...GOOSE CREEK AND SANGAREE...

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD-TO-GROUND LIGHTNING IS OCCURRING. POSTPONE OUTDOOR
ACTIVITIES PROMPTLY. SEEK SHELTER INSIDE AN ENCLOSED BUILDING.

&&

LAT...LON 3296 8002 3297 8003 3300 8004 3300 8009
      3305 8015 3314 8008 3309 7990
TIME...MOT...LOC 2031Z 302DEG 13KT 3306 8008

Special weather statement, Jun 27, 4:51 PM EDT, 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
451 PM EDT SUN JUN 27 2010

SCZ043-044-048>050-272130-
BEAUFORT-CHARLESTON-COASTAL COLLETON-DORCHESTER-INLAND COLLETON-
451 PM EDT SUN JUN 27 2010

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF DORCHESTER...
COLLETON...CHARLESTON AND BEAUFORT COUNTIES THROUGH 530 PM EDT...

AT 447 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM RED TOP TO
BEAUFORT MARINE CORPS AIR STATION...MOVING SOUTHEAST AT 25 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
ADAMS RUN...ARCHDALE...BEAUFORT...BENNETTS
POINT...CLARENDON...DALE...EDISTO ISLAND...FRIPP ISLAND...
HOLLYWOOD...JAMES ISLAND...JOHNS ISLAND...KIAWAH ISLAND...LADYS
ISLAND...PORT ROYAL...RAVENEL...ROCKVILLE...SEABROOK
ISLAND...WADMALAW ISLAND...WEST ASHLEY AND YONGES ISLAND...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
PENNY SIZE HAIL...
FREQUENT CLOUD TO GROUND LIGHTNING...

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 3247 8032 3256 8041 3249 8036 3252 8067
      3248 8048 3248 8047 3246 8047 3248 8055
      3241 8042 3231 8045 3225 8061 3225 8062
      3234 8064 3232 8067 3250 8083 3297 8011
      3269 7988
TIME...MOT...LOC 2051Z 325DEG 20KT 3282 8012 3248 8068

Local storm report, Jun 27, 5:21 PM EDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
521 PM EDT SUN JUN 27 2010

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

0454 PM     HAIL             BONNEAU                 33.31N 79.96W
06/27/2010  E0.75 INCH       BERKELEY           SC   PUBLIC

            PUBLIC REPORTED PENNY SIZE HAIL LASTING A FEW MINUTES.

&&

DPB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 8:26 PM EDT	Special Weather Statement	CHS	Bryan	34 min
Jun 26, 8:47 PM EDT	Severe Thunderstorm Warning	CHS	Jenkins, Screven	36 min
Jun 27, 1:29 PM EDT	Heat Advisory	CHS	Bulloch, Candler, Effingham, Evans, Jenkins, Long and 2 more	6 hr
Jun 27, 4:53 PM EDT	Special Marine Warning	CHS		112 min
Jun 27, 6:04 PM EDT	Special Weather Statement	CHS	Chatham	26 min
Jun 27, 6:50 PM EDT	Severe Thunderstorm Warning	CHS	Chatham	55 min
Jun 27, 7:14 PM EDT	Special Weather Statement	CHS	Tattnall	31 min
Jun 27, 7:17 PM EDT	Areal Flood Advisory	CHS	Chatham	88 min
Jun 27, 2:24 PM EDT	Special Weather Statement	CHS	Allendale	36 min
Jun 27, 3:06 PM EDT	Special Weather Statement	CHS	Hampton	24 min
Jun 27, 3:27 PM EDT	Special Weather Statement	CHS	Hampton	33 min
Jun 27, 4:11 PM EDT	Special Weather Statement	CHS	Colleton	34 min
Jun 27, 4:24 PM EDT	Special Weather Statement	CHS	Berkeley	36 min
Jun 27, 4:31 PM EDT	Special Weather Statement	CHS	Berkeley	29 min
Jun 27, 4:38 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	67 min
Jun 27, 4:51 PM EDT	Special Weather Statement	CHS	Beaufort	39 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2010 Every severe thunderstorm warning in 2010

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.