Alert archive / South Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Charleston, SC

June 20, 2021Berkeley County, South Carolina

NWS Charleston, SC issued this special weather statement at Jun 20, 2021, 6:01 PM EDT for Berkeley County, South Carolina. It was in force for 29 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: Jun 20, 2021, 6:01 PM EDT (22:01 UTC)
Expired: Jun 20, 2021, 6:30 PM EDT
In force: 29 min
Issued by: NWS Charleston, SC
Hail: 0.00 in
Wind: 55

County Berkeley County, SC

The radar

The Charleston,SC radar (KCLX), 116 km from the middle of the area, began a volume at 22:06 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, 10.0 hours before the alert went out and 30 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: 1312 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 848 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 199 m²/s²
0-3 km storm-relative helicity: 209 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.2

Open this sounding in Storm Lab

The text

As transmitted.

584 
WWUS82 KCHS 202201
SPSCHS

Special Weather Statement
National Weather Service Charleston SC
601 PM EDT Sun Jun 20 2021

SCZ045-050-052-202230-
Inland Berkeley-Tidal Berkeley-Charleston-
601 PM EDT Sun Jun 20 2021

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CHARLESTON AND
BERKELEY COUNTIES...

At 601 PM EDT, National Weather Service doppler radar indicated
strong thunderstorms along a line extending from Saint Stephen to 
Old Santee Canal State Park to Magnolia Gardens, moving northeast at 
45 mph.

HAZARD...strong winds 45 to 55 mph.

SOURCE...Radar Indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of 
         light, unsecured objects.

Some locations in the path of these storms include...
North Charleston, Goose Creek, Hanahan, Moncks Corner, Naval Weapons
Station Charleston, Ladson, Saint Stephen and Bonneau.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so. You can also email your
report to nws.charlestonsc@noaa.gov.

&&

LAT...LON 3343 7987 3340 7985 3337 7980 3338 7979
      3332 7974 3329 7963 3307 7973 3283 8016
      3285 8017 3289 8015 3290 8012 3289 8010
      3293 8008 3296 8011 3312 8004 3342 8003
      3349 7995
TIME...MOT...LOC 2201Z 228DEG 39KT 3340 7996 3319 7996 3291 8009 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

$$

MTE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 2:58 AM EDT	Flash Flood Watch	CHS	Allendale, Berkeley, Colleton, Dorchester, Hampton	24 hr
Jun 20, 11:19 AM EDT	Gale Warning	CHS		18 hr
Jun 20, 1:30 PM EDT	Lake Wind Advisory	CHS	Berkeley	14 hr
Jun 20, 4:36 PM EDT	Special Weather Statement	CHS	Colleton	24 min
Jun 20, 4:54 PM EDT	Special Weather Statement	CHS	Colleton, Dorchester	36 min
Jun 20, 6:30 PM EDT	Special Weather Statement	CHS	Berkeley	30 min
Jun 20, 6:50 PM EDT	Special Weather Statement	CHS	Berkeley	25 min
Jun 20, 2:06 PM EDT	Special Weather Statement	CHS	Bulloch, Candler, Jenkins, Screven	24 min
Jun 20, 2:29 PM EDT	Special Weather Statement	CHS	Bulloch, Candler, Evans, Screven	31 min
Jun 20, 2:59 PM EDT	Special Weather Statement	CHS	Bulloch, Evans, Screven	31 min
Jun 20, 3:28 PM EDT	Special Weather Statement	CHS	Bulloch	32 min

Nearby

Special Weather Statements in South Carolina, 2021 Every special weather statement in 2021

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.