Category Archives: Alerts

Tornado watch no longer in effect

This tornado watch is no longer in effect.

A tornado watch is up until 9PM for the Tri-County area. Right now most of the Tri-County is dry; however, conditions along and ahead of an advancing “wedge front” — the leading edge of a high pressure wedge being re-established inland thanks to rain-cooled air — are becoming increasingly favorable for a few tornadoes along with straight-line damaging winds.

Stay attuned to reliable weather sources such as NOAA Weather Radio, local media, the National Weather Service (http://weather.gov/chs) for updates or possible warnings.

Flood advisory until 6:30am for the Charleston metro including downtown

We’re starting the day with a flood advisory for downtown Charleston, James Island, western Mt. Pleasant, and West Ashley as several rounds of heavy rain continue to move through the area. With high tide approaching (7:36 AM), drainage could become an issue. Flood advisory goes until 6:30am. If you see water covering the road, take an alternate route. Expect steady rain to let up by mid-morning as we get between precipitation events.

Latest NWS statement on freezing drizzle potential overnight

My emphasis added…

…PATCHY FREEZING DRIZZLE OVERNIGHT INTO EARLY TUESDAY…

TEMPERATURES AROUND FREEZING WILL SETTLE INTO AREAS NORTH OF
INTERSTATE 16 AND AWAY FROM THE IMMEDIATE SOUTH CAROLINA COAST
OVERNIGHT INTO EARLY TUESDAY. AS A RESULT…DRIZZLE COULD BEGIN TO
FREEZE ON SOME ELEVATED SURFACES.

DUE TO THE COMBINATION OF EVAPORATION ENHANCED BY PERSISTENT
WINDS…THE EXPECTED LIGHT AND SPOTTY NATURE OF ANY DRIZZLE AND
THE LINGERING EFFECTS OF TEMPERATURES IN THE 70S SUNDAY AND
MONDAY…DRIZZLE IS NOT EXPECTED TO FREEZE ON ROADS AND SHOULD
NOT IMPACT TRAVEL. VERY LIGHT ICE ACCUMULATION…IF ANY…WOULD
BE LIMITED TO TREE BRANCHES AND OTHER SURFACES ABOVE THE GROUND.

IF MORE SUSTAINED FREEZING DRIZZLE OR LIGHT FREEZING RAIN
DEVELOPS…THERE IS A VERY LOW PROBABILITY FOR SLICK SPOTS
ON SOME BRIDGES AND OVERPASSES LATE TONIGHT INTO EARLY TUESDAY.
HOWEVER…EVEN IN A WORST CASE SCENARIO THE IMPACT OF ANY ICE
ACCUMULATION OVERNIGHT WOULD NOT COMPARE WITH THE IMPACT OF
THE ICE STORMS THAT OCCURRED IN JANUARY AND FEBRUARY
.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

KEEP UP TO DATE WITH THE LATEST FORECASTS AND INFORMATION FROM
THE NATIONAL WEATHER SERVICE IN CHARLESTON.

Will be a conversational glaze at worst, it looks like. School will be open, the Ravenel will be open…Charleston will be open for business tomorrow. Proceed normally.

Ice Storm Warning for Charleston County; Winter Storm Warning for Berkeley & Dorchester

An Ice Storm Warning has been issued for Charleston County, and a Winter Storm Warning has been issued for Berkeley and Dorchester counties. Warnings start at noon Tuesday and run until Wednesday at 5PM.

Ice accumulations everywhere will range from 1/4 – 3/4″ in spots. This will almost certainly cause issues with trees and power lines (not to mention the roads). Charleston County will see much more of a freezing rain event than anything else; we get into the wintry mix further inland, hence the Winter Storm Warning for Berkeley & Dorchester.

Timing per latest NWS forecast: Rain will change to freezing rain over the area after noon tomorrow; freezing rain will continue, heavy at times, overnight into early Wednesday morning. At that point, rain will change over to snow for all areas as the system departs. Snow is to taper off Wednesday, however we could deal with the after-effects for a couple days as ice melts and then refreezes at night.

Refer to local media for updates on closures. Will keep you advised here as more information from the NWS becomes available.

Whole lotta coastal hazards today

A lousy marine weather day continues. NWS has made some changes to the wind and wave hazard headlines…here’s the updated list of advisories as of 4PM:

  • The Wind Advisory has been canceled. For land-lovers: A Wind Advisory is in effect until 6 PM today for the coastal counties, including Charleston County. Winds 20-30 MPH with gusts to 40+ MPH will be commonplace near and just inland from the coast (generally along and east of Highway 17). We had some isolated reports of trees down yesterday and I wouldn’t be shocked to see a couple more reports today.
  • Conditions at the beaches remain rough. A High Surf Advisory continues through noon Sunday. Breakers 4-7 feet have been observed and will likely continue through the weekend. This high surf is causing some fairly major beach erosion around Folly Beach in particular.
  • Along with the high surf, a high risk of rip currents will continue through this evening. The water is dangerous right now; nobody should be getting into the ocean! WCBD News 2 reported a possible missing paddleboarder off Isle of Palms last night. A moderate rip current risk will continue on Sunday.
  • Small craft advisories are now up for the Charleston Harbor and coastal waters; Charleston Harbor’s advisory goes until 2am, while the Charleston County coastal waters will be under the Small Craft Advisory through 6am Monday. Gale warnings are no longer in effect. Gale warnings continue for the coastal waters, including Charleston Harbor, until 6PM.
  • The Lake Wind Advisory for Lake Moultrie has been canceled. Lake Moultrie is not off the hook, with a Lake Wind Advisory continuing through 6PM. Winds 15-25 knots will cause some trouble for small craft on the lake.

Look out on Twitter and this blog for additional updates to these hazards.

Updated at 4:05 PM to reflect latest posted hazards from the National Weather Service.

Wind advisory canceled; rip currents and high surf still a factor today

Update as of 11:45 AM: The wind advisory has been canceled. High surf and rip currents still an issue through this evening.

The National Weather Service continues a wind advisory until noon for Charleston County and southern Berkeley County (Daniel Island and the ports). Wind gusts over 40 MPH may be possible with higher gusts on elevated surfaces.

In addition to the wind advisory, hazardous surf will continue to be a factor through noon Monday; dangerous rip currents will continue to be possible through 8PM. If the beach is in your plans — and with that kind of wind, it’d be awfully unpleasant — be advised of dangerous conditions in the water.