Alert archive / South Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Charleston, SC

June 4, 2021Hampton County, South Carolina

NWS Charleston, SC issued this special weather statement at Jun 4, 2021, 5:12 PM EDT for Hampton County, South Carolina. It was in force for 33 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 4, 2021, 5:12 PM EDT (21:12 UTC)
Expired
Jun 4, 2021, 5:45 PM EDT
In force
33 min
Issued by
NWS Charleston, SC
Hail
0.00 in
Wind
55

County Hampton County, SC

The radar

The Charleston,SC radar (KCLX), 16 km from the middle of the area, began a volume at 21:14 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, 9.2 hours before the alert went out and 116 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 2021-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1076 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2021-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 square meters per square second.193958Sfc1 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
1076 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
672 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.4

Open this sounding in Storm Lab

The text

As transmitted.

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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 Jun 4, 3:39 PM EDT, 1 hour 33 minutes earlier.

Area forecast discussion, Jun 4, 3:39 PM EDT, 1 hour 33 minutes before
Area Forecast Discussion
National Weather Service Charleston SC
339 PM EDT Fri Jun 4 2021

.SYNOPSIS...
Atlantic high pressure will prevail through late next week.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
A moist airmass will persist across the area through tonight
with PWAT values around 1.9". Meanwhile a series of upper
shortwaves will ripple through the area through the night. The
leading edge of one shortwave has been moving through the SC
Midlands and is now triggering some showers and tstms across our
western zones. Fairly deep WSW flow is keeping the sea breeze
pinned near the coast, so convection stands a better chance of
making it all the way through the area even if it initially
develops across inland locations. We are showing scattered
convection through the evening, decreasing to isolated coverage
overnight. Lows will be relatively warm in the low 70s.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH MONDAY/...
Aloft, a weak ridge will prevail across the region while a
trough is centered across the South Central United States. At
the sfc, a southerly flow will be in place along the western
periphery of Atlantic high pressure and to the east of weak
troughing positioned inland. The overall pattern will set the
stage for showers and thunderstorms each day, generally peaking
in coverage during maximum daytime heating as weak mid-lvl
disturbances ripple across the area aloft and a sea breeze
shifts inland. Scattered to numerous showers/thunderstorms are
possible away from the coast where the combination of moisture
and forcing mechanisms are most co-located. High temps will
range in the mid-upper 80s each day, with a few locations
touching 90 degrees away from the coast in southeast Georgia
over the weekend. Overnight lows will remain mild, generally
ranging in the upper 60-lower 70s inland to mid 70s near the
coast.

&&

.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
Aloft, a ridge will gradually strengthen while remaining
centered across the Southeast United States while a trough
weakens across the South Central United States. At the sfc, the
area will initially be positioned along the western periphery of
Atlantic high pressure, before building further inland during
the week. Given the setup, a slight warming trend is anticipated
while convective coverage becomes less throughout the week due
to the building ridge. Greatest shower/thunderstorm activity
should occur well inland Monday afternoon when moisture is
largest (PWATs ~2.0 inches), before most activity becomes
focused to afternoon sea breeze circulations shifting inland
each day. High temps should range in the mid/upper 80s early
week, then upper 80s to lower 90s during the second half of the
week. Overnight lows should range in the mid 60s-lower 70s
inland to mid 70s near the coast.

&&

.AVIATION /19Z FRIDAY THROUGH WEDNESDAY/...
Towering cumulus starting to show up on satellite imagery this
afternoon. Scattered showers and tstms expected to develop this
afternoon, mainly affecting CHS and SAV terminals with
occasional vsby/cig reductions. The sea breeze should limit
coverage at JZI as it pushes a bit farther inland early this
afternoon.

Extended Aviation Outlook: Brief flight restrictions are possible
due to low clouds during overnight periods and low vsbys during
afternoon showers/thunderstorms each day.

&&

.MARINE...
S to SW winds 10-15 kt expected through tonight.

Fairly quiet marine conditions will be in place this weekend
and through the middle of next week as the region remains along
the western periphery of Atlantic high pressure and to the east
of weak mid-lvl disturbances passing inland. Outside of shower
and thunderstorm activity each day/night, southerly flow will be
in place with wind speeds generally 10-15 kt or less. Seas will
range between 2-4 ft, highest across offshore Georgia waters.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...None.

&&

NEAR TERM...JRL
SHORT TERM...DPB
LONG TERM...DPB
AVIATION...DPB/JRL
MARINE...DPB/JRL
Hazardous weather outlook, Jun 4, 3:30 AM EDT, 13 hours 42 minutes before
Hazardous Weather Outlook
National Weather Service Charleston SC
330 AM EDT Fri Jun 4 2021

AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040-
042>045-047>052-050730-
Charleston Harbor-
Waters from South Santee River to Edisto Beach SC out 20 NM-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
Jenkins-Screven-Candler-Bulloch-Effingham-Tattnall-Evans-
Inland Bryan-Coastal Bryan-Inland Chatham-Coastal Chatham-Long-
Inland Liberty-Coastal Liberty-Inland McIntosh-Coastal McIntosh-
Allendale-Hampton-Inland Colleton-Dorchester-Inland Berkeley-
Inland Jasper-Beaufort-Coastal Colleton-Charleston-Coastal Jasper-
Tidal Berkeley-
330 AM EDT Fri Jun 4 2021

This Hazardous Weather Outlook is for Atlantic coastal waters,
southeast Georgia and southeast South Carolina.

.DAY ONE...Today and tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter assistance is not anticipated at this time.

In the hours before

Local storm report, Jun 4, 1:56 PM EDT, 3 hours 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
156 PM EDT FRI JUN 04 2021

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

0130 PM     RIP CURRENTS     FOLLY BEACH             32.65N  79.94W
06/04/2021                   AMZ350             SC   LIFEGUARD

            FOLLY BEACH LIFEGUARDS REPORTED 2 WEAK RIP CURRENTS IN
            FRONT OF THE BEACH HOUSE.

&&

EVENT NUMBER CHS2100198

BRM
Special weather statement, Jun 4, 4:48 PM EDT, 24 minutes before
Special Weather Statement
National Weather Service Charleston SC
448 PM EDT Fri Jun 4 2021

SCZ042-043-042115-
Hampton-Inland Colleton-
448 PM EDT Fri Jun 4 2021

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF HAMPTON AND COLLETON
COUNTIES...

At 448 PM EDT, National Weather Service doppler radar indicated
strong thunderstorms along a line extending from Miley to near
Ashton, and moving east at 10 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...
Miley, Ruffin and Islandton.

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 3290 8079 3302 8077 3299 8105 3292 8110
TIME...MOT...LOC 2048Z 272DEG 7KT 3295 8104 3297 8093

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH
Special weather statement, Jun 4, 5:12 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Charleston SC
512 PM EDT Fri Jun 4 2021

SCZ042-047-042145-
Inland Jasper-Hampton-
512 PM EDT Fri Jun 4 2021

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF HAMPTON AND JASPER
COUNTIES...

At 512 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorm over Scotia, or 12 miles southwest of Lake Warren
State Park, moving east at 15 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 this storm include...
Estill, Furman, Scotia, Garnett, Lena, Pineland, Shirley and Grays.

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 3260 8134 3274 8134 3279 8100 3258 8102
TIME...MOT...LOC 2112Z 270DEG 14KT 3268 8127

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

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 3:52 PM EDTAreal Flood AdvisoryCHSCharleston3 hr
Jun 4, 4:48 PM EDTSpecial Weather StatementCHSHampton27 min
Jun 4, 6:45 PM EDTAreal Flood AdvisoryCHSCharleston90 min
Jun 4, 6:18 PM EDTSpecial Weather StatementCHSChatham27 min
Jun 4, 7:33 PM EDTSpecial Weather StatementCHSBryan27 min

Nearby

Special Weather Statements in South Carolina, 2021Every 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.