Alert archive / South Carolina / Flash Flood Warnings in 2012
Flash Flood Warning 7, NWS Charleston, SC
NWS Charleston, SC issued this flash flood warning at Aug 28, 2012, 11:36 AM EDT for Berkeley County, Charleston County, South Carolina. It was in force for 12 hr. 23 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 28, 2012, 11:36 AM EDT (15:36 UTC)
- Expired
- Aug 28, 2012, 11:56 PM EDT
- In force
- 12 hr
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Berkeley County, SC, Charleston County, SC
The radar
The Charleston,SC radar (KCLX), 109 km from the middle of the area, began a volume at 15:38 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 28, 11:42 AM EDT | FLASH FLOOD | 1 Ene James Island Coun, SC | BROADCAST MEDIA RELAYED FIRE RESCUE REPONDING TO A STRANDED VEHICLE ON HUNLEY AVENUE NEAR FOLLY ROAD. |
| Aug 28, 11:45 AM EDT | FLASH FLOOD | 1 Nnw Charleston, SC | SPOTTER REPORTS ROAD IMPASSABLE ALONG KING STREET NEAR HUGER STREET IN DOWNTOWN CHARLESTON. |
| Aug 28, 12:05 PM EDT | FLASH FLOOD | 1 Wnw West Ashley, SC | SC HIGHWAY PATROL REPORTS SAVAGE ROAD NEAR I-526 CLOSED DUE TO FLOODING. |
| Aug 28, 12:15 PM EDT | FLASH FLOOD | Downtown Charleston, SC | CHARLESTON EM REPORTED 20 SEPARATE STRANDED VEHICLES IN AND AROUND DOWNTOWN THAT POLICE AND FIRE DEPT CREWS ARE REPONDING TO AT THIS TIME. |
| Aug 28, 12:27 PM EDT | FLASH FLOOD | 1 Wsw Mount Pleasant, SC | COLEMAN BOULEVARD NEAR MOULTRIE MIDDLE SCHOOL HAS BEEN CLOSED DUE TO FLOODING. |
| Aug 28, 12:33 PM EDT | FLASH FLOOD | 2 Wsw North Charleston, SC | CHARLESTON COUNTY DISPATCH REPORTED FLOODING AND STRANDED VEHICLES ON AZALEA DRIVE FROM COSGROVE AVENUE TO MEETING STREET...INCLUDING INDUSTRIAL AVENUE. |
| Aug 28, 12:45 PM EDT | HEAVY RAIN 4.39 | 2 E Charles Towne Landi, SC | COCORAHS OBSERVER MEASURED 4.39 INCHES OF RAIN IN THE LAST 4 HOURS. |
| Aug 28, 12:46 PM EDT | FLOOD | 1 Ssw Shadowmoss, SC | 3.49 INCHES OF RAIN FELL IN 90 MINUTES. EXTENSIVE YARD FLOODING THROUGHOUT THE NEIGHBORHOOD |
| Aug 28, 12:46 PM EDT | HEAVY RAIN 3.49 | 1 Ssw Shadowmoss, SC | 3.49 INCHES OF RAIN FELL IN 90 MINUTES. EXTENSIVE YARD FLOODING THROUGHOUT THE NEIGHBORHOOD |
| Aug 28, 2:18 PM EDT | HEAVY RAIN 4.58 | Downtown Charleston, SC | COLLEGE OF CHARLESTON OBSERVATORY. |
| Aug 28, 2:30 PM EDT | HEAVY RAIN 6 | 2 Se West Ashley, SC | |
| Aug 28, 2:42 PM EDT | FLASH FLOOD | Downtown Charleston, SC | NUMEROUS ROADS REMAIN FLOODED...WATER HAS ENTERED MANY HOMES AND BUSINESSES. WATER RESCUES ARE STILL ONGOING. MARKET AREA COMPLETELY FLOODED. |
| Aug 28, 2:50 PM EDT | FLASH FLOOD | 1 W West Ashley, SC | WATER ENTERING HOMES ON HAZELWOOD DRIVE. |
| Aug 28, 3:09 PM EDT | HEAVY RAIN 7.5 | Daniel Island, SC | RELAYED BY LOCAL MEDIA FROM LOCAL SPOTTER. LOCATION OFF CLEMENTS FERRY ROAD. |
| Aug 28, 3:33 PM EDT | HEAVY RAIN 4.03 | 2 W James Island, SC | RAINFALL FROM 8 AM TO 330 PM. |
| Aug 28, 3:34 PM EDT | FLASH FLOOD | 1 Nne North Charleston, SC | NORTH CHARLESTON ROADS FLOODED...NOISETTE BLVD AND VIRGINIA. MCMILLAN TO NOISETTE AND ST. JOHNS. BUIST AT PARK PLACE. VIADUCT AND HOBSON. |
| Aug 28, 3:55 PM EDT | FLASH FLOOD | 1 Nne Maybank Bridge, SC | EMORY AVENUE FLOODED AND ONLY PASSAGE BY TALL TRUCKS. MANY YARDS FLOODED AND WATER SURROUNDING SOME HOMES. |
| Aug 28, 4:37 PM EDT | HEAVY RAIN 7.5 | 2 Se West Ashley, SC | SPOTTER MEASURED 7.50 INCHES OF RAIN BEFORE GAUGE OVERFLOWED. |
| Aug 28, 5:05 PM EDT | FLASH FLOOD | Downtown Charleston, SC | CITY OF CHARLESTON EMERGENCY MANAGER REPORTS PORTIONS OF THE FOLLOWING ARE STILL CLOSED DUE TO FLASH FLOODING... HAGOOD... PRESIDENT... FISHBURNE... HUGER... KING... GADSON... ASHLEY... BENNETTE... HENRY... WENTWORTH... GADSON... CROSSTOWN. EMERGENCY PERSONNEL |
| Aug 28, 7:25 PM EDT | FLASH FLOOD | Downtown Charleston, SC | NUMEROUS ROADS REMAIN CLOSED THROUGHOUT DOWNTOWN CHARLESTON PER CITY OF CHARLESTON EMERGENCY MANAGER. DRAINAGE OF FLOOD WATERS HAS CEASED DUE TO HIGH TIDE. |
| Aug 28, 7:29 PM EDT | HEAVY RAIN 3.84 | 1 Se Mount Pleasant Tow, SC | RAINFALL FROM 1030 AM TO 725 PM. |
| Aug 28, 8:30 PM EDT | FLASH FLOOD | Downtown Charleston, SC | COLLEGE OF CHARLESTON EMERGENCY MANAGER REPORTS THAT AT LEAST 11 BUILDINGS ON THE CAMPUS HAVE SUSTAINED DAMAGE FROM FLASH FLOODING. FLOOD WATERS ARE STILL IN PLACE ACROSS MUCH OF THE CAMPUS. |
| Aug 28, 10:43 PM EDT | FLASH FLOOD | Downtown Charleston, SC | NUMEROUS STREETS REMAINED FLOODED AND CLOSED IN DOWNTOWN CHARLESTON INCLUDING PORTIONS OF...THE CROSSTOWN... PRESIDENT... LINE... ASHLEY... CALHOUN... HUGER... KING... BARRE... GADSON AND WENTWORTH. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched 14 storm reports to this flash flood warning; the first came 6 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 3.6 hours before the alert went out and 21 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.
- Mixed-layer CAPE
- 773 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 741 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
417
WGUS52 KCHS 281536
FFWCHS
SCC015-019-281830-
/O.NEW.KCHS.FF.W.0007.120828T1536Z-120828T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
1136 AM EDT TUE AUG 28 2012
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL BERKELEY COUNTY IN SOUTHEAST SOUTH CAROLINA...
CENTRAL CHARLESTON COUNTY IN SOUTHEAST SOUTH CAROLINA...
* UNTIL 230 PM EDT
* AT 1129 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN OCCURRING AROUND THE DOWNTOWN CHARLESTON AREA. AS
MUCH AS 2 TO 3 INCHES OF RAIN HAS ALREADY FALLEN THIS MORNING AND
AN ADDITIONAL 2 MORE INCHES IS POSSIBLE THROUGH EARLY AFTERNOON.
* FLASH FLOODING IS EXPECTED IN AND AROUND...
WEST ASHLEY...DOWNTOWN CHARLESTON...DANIEL ISLAND...AND MOUNT
PLEASANT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
AVOID DRIVING INTO WATER ON THE ROAD. THE WATER IS USUALLY DEEPER
THAN IT APPEARS AND THE ROAD MAY BE WASHED OUT. ONLY ONE FOOT OF
WATER WILL STALL A VEHICLE AND LESS THAN TWO FEET OF WATER CAN FLOAT
AND CARRY AWAY A VEHICLE. FLOODING IS THE NUMBER ONE WEATHER-RELATED
CAUSE OF DEATH IN THE UNITED STATES. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
TO REPORT FLOODING...CONTACT THE NATIONAL WEATHER SERVICE IN
CHARLESTON TOLL FREE AT 1-888-383-2024.
&&
LAT...LON 3277 7981 3275 7984 3275 7986 3273 7986
3268 7988 3266 7990 3263 7997 3260 7999
3260 8003 3287 8010 3299 7975 3281 7971
$$
BSH10 follow-up statements
615
WGUS72 KCHS 281603
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1203 PM EDT TUE AUG 28 2012
SCC015-019-281830-
/O.CON.KCHS.FF.W.0007.000000T0000Z-120828T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHARLESTON SC-BERKELEY SC-
1203 PM EDT TUE AUG 28 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM EDT FOR SOUTH
CENTRAL BERKELEY AND CENTRAL CHARLESTON COUNTIES...
AT 1157 AM EDT...EXTREMELY HEAVY RAINFALL CONTINUES ACROSS AREAS
FROM WEST ASHLEY...TO NORTH CHARLESTON...DOWNTOWN CHARLESTON...AND
MOUNT PLEASANT. TRAINED WEATHER SPOTTERS AND LOCAL LAW ENFORCEMENT
OFFICIALS REPORT NUMEROUS ROADS AS IMPASSABLE IN THESE AREAS.
FURTHERMORE...THERE ARE MULTIPLE REPORTS OF STALLED VEHICLES AND
RESCUES TAKING PLACE. THIS IS AN EXTREMELY DANGEROUS AND LIFE
THREATENING SITUATION AND ANYONE IN AND AROUND DOWNTOWN CHARLESTON
SHOULD TAKE IMMEDIATE ACTION NOW.
RAINFALL AMOUNTS OF 3 INCHES OR MORE HAVE ALREADY FALLEN AND AN
ADDITIONAL 2 TO 4 INCHES WILL BE POSSIBLE THROUGH THE EARLY
AFTERNOON.
FLASH FLOODING IS EXPECTED IN AND AROUND BOONE HALL PLANTATION...
CAINHOY...CHARLES TOWNE LANDING...CHARLESTON NAVAL COMPLEX...DANIEL
ISLAND...DON HOLT BRIDGE...DOWNTOWN CHARLESTON...FOLLY BEACH...FORT
JOHNSON...FORT SUMTER...I-26/I-526 INTERCHANGE...ISLE OF PALMS...
JAMES ISLAND...JAMES ISLAND COUNTY PARK...MAYBANK BRIDGE...MOUNT
PLEASANT...MOUNT PLEASANT REGIONAL AIRPORT...MOUNT PLEASANT TOWNE
CENTRE...NORTH CHARLESTON...SHADOWMOSS...SULLIVANS ISLAND...WANDO AND
WEST ASHLEY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE MAJORITY OF FLOOD DEATHS ARE DUE TO PEOPLE DRIVING INTO WATER OF
UNKNOWN DEPTH. JUST ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH TO
SWEEP VEHICLES OFF THE ROAD. EVEN MODERN SPORT UTILITY VEHICLES ARE
VULNERABLE TO FLOODING. TO AVOID THE RISK OF DEATH...FIND AN
ALTERNATE ROUTE IF THE ROAD IS FLOODED.
HOMES AND BUSINESSES WILL BEGIN TO FLOOD DUE TO THE TORRENTIAL
RAINFALL. IF YOU ARE IN A LOW-LYING AREA...BE PROACTIVE. RAISE
SENSITIVE ITEMS OFF THE GROUND BEFORE FLOODING BEGINS.
TO REPORT SIGNIFICANT FLOODING...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN CHARLESTON TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR
REPORTS TO CHS.SKYWARN@NOAA.GOV. REPORTS CAN ALSO BE SENT THROUGH
TWITTER USING #WXREPORT.
&&
LAT...LON 3277 7981 3275 7984 3275 7986 3273 7986
3268 7988 3266 7990 3263 7997 3260 7999
3260 8003 3287 8010 3299 7975 3281 7971
$$
BSH284
WGUS72 KCHS 281706
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
106 PM EDT TUE AUG 28 2012
SCC015-019-281830-
/O.CON.KCHS.FF.W.0007.000000T0000Z-120828T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHARLESTON SC-BERKELEY SC-
106 PM EDT TUE AUG 28 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM EDT FOR SOUTH
CENTRAL BERKELEY AND CENTRAL CHARLESTON COUNTIES...
THIS IS A VERY DANGEROUS SITUATION.
AT 105 PM EDT...RADAR INDICATED VERY HEAVY RAINFALL CONTINUING TO
FALL ACROSS THE WARNED AREA. RADAR RAINFALL ESTIMATES AND COCORAHS
OBSERVERS INDICATE THAT WIDESPREAD RAINFALL AMOUNTS OF 3 TO 5 INCHES
HAS FALLEN IN MUCH OF THE WARNED AREA SINCE 10 AM...WITH LOCAL
AMOUNTS LIKELY WELL IN EXCESS OF 6 INCHES. REPORTS FROM LOCAL
MEDIA...LAW ENFORCEMENT AND THE PUBLIC INDICATE NUMEROUS ROADS
FLOODED AND IMPASSIBLE IN DOWNTOWN CHARLESTON AS WELL AS PARTS OF
WEST ASHLEY AND MOUNT PLEASANT. IN ADDITION...THERE HAVE BEEN DOZENS
OF PEOPLE RESCUED FROM THEIR VEHICLES AND A REPORT OF WATER ENTERING
THE LOBBY OF THE STERN CENTER AT THE COLLEGE OF CHARLESTON.
ANOTHER 1 TO 2 INCHES OF RAIN IS EXPECTED THROUGH 230 PM WHICH WILL
ONLY EXACERBATE THE FLOODING PROBLEMS.
FLASH FLOODING IS EXPECTED IN AND AROUND DOWNTOWN CHARLESTON...FORT
JOHNSON...JAMES ISLAND...MOUNT PLEASANT...NORTH CHARLESTON AND WEST
ASHLEY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE MAJORITY OF FLOOD DEATHS ARE DUE TO PEOPLE DRIVING INTO WATER OF
UNKNOWN DEPTH. EVEN MODERN SPORT UTILITY VEHICLES ARE VULNERABLE TO
FLOODING. TURN AROUND...DONT DROWN.
SOME HOMES AND BUSINESSES WILL FLOOD AS A RESULT THE TORRENTIAL
RAINFALL AND MANY ROADS WILL REMAIN FLOODED. IF YOU ARE IN A
LOW-LYING AREA...BE PROACTIVE. RAISE SENSITIVE ITEMS OFF THE GROUND
BEFORE FLOODING BEGINS.
&&
LAT...LON 3277 7981 3275 7984 3275 7986 3273 7986
3268 7988 3266 7990 3263 7997 3260 7999
3260 8003 3287 8010 3299 7975 3281 7971
$$630
WGUS72 KCHS 281749
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
149 PM EDT TUE AUG 28 2012
SCC015-019-281830-
/O.CON.KCHS.FF.W.0007.000000T0000Z-120828T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHARLESTON SC-BERKELEY SC-
149 PM EDT TUE AUG 28 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM EDT FOR SOUTH
CENTRAL BERKELEY AND CENTRAL CHARLESTON COUNTIES...
AT 145 PM EDT...LOCAL MEDIA AND LAW ENFORCEMENT OFFICIALS CONTINUE
TO REPORT NUMEROUS ROADS FLOODED AND IMPASSIBLE IN DOWNTOWN
CHARLESTON AND PORTIONS OF WEST ASHLEY AND MOUNT PLEASANT. EVEN
THOUGH THE RAINFALL INTENSITY HAS DECREASED...ANY ADDITIONAL
RAINFALL WILL ONLY WORSEN THE SITUATION. THE FLOODING OF NUMEROUS
ROADS AND SOME HOMES AND BUSINESSES WILL CONTINUE THROUGH AT LEAST
230 PM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE MAJORITY OF FLOOD DEATHS ARE DUE TO PEOPLE DRIVING INTO WATER OF
UNKNOWN DEPTH. EVEN MODERN SPORT UTILITY VEHICLES ARE VULNERABLE TO
FLOODING. TO AVOID THE RISK OF DEATH...FIND AN ALTERNATE ROUTE IF
THE ROAD IS FLOODED.
SOME HOMES AND BUSINESSES WILL FLOOD DUE TO THE HEAVY RAINFALL THAT
HAS ALREADY OCCURRED ALONG WITH ANY ADDITIONAL RAINFALL. IF YOU ARE
IN A LOW-LYING AREA...BE PROACTIVE. RAISE SENSITIVE ITEMS OFF THE
GROUND BEFORE FLOODING BEGINS.
KEEP CHILDREN AWAY FROM STORM DRAINS...WATER CATCHMENTS...AND
STREAMS.
TO REPORT SIGNIFICANT FLOODING...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN CHARLESTON TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR
REPORTS TO CHS.SKYWARN@NOAA.GOV. REPORTS CAN ALSO BE SENT THROUGH
TWITTER USING #WXREPORT.
&&
LAT...LON 3277 7981 3275 7984 3275 7986 3273 7986
3268 7988 3266 7990 3263 7997 3260 7999
3260 8003 3287 8010 3299 7975 3281 7971
$$356
WGUS52 KCHS 281826
FFWCHS
SCC015-019-282130-
/O.EXT.KCHS.FF.W.0007.000000T0000Z-120828T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
226 PM EDT TUE AUG 28 2012
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL BERKELEY COUNTY IN SOUTHEAST SOUTH CAROLINA...
CENTRAL CHARLESTON COUNTY IN SOUTHEAST SOUTH CAROLINA...
* UNTIL 530 PM EDT
* AT 226 PM EDT...SPOTTERS AND EMERGENCY MANAGEMENT OFFICIALS
CONTINUE TO REPORT WIDESPREAD FLASH FLOODING ACROSS MUCH
OF CENTRAL CHARLESTON COUNTY AND PARTS OF SOUTH CENTRAL
BERKELEY COUNTY. ROADS REMAIN FLOODED AND IMPASSABLE IN
MANY AREAS AND FLOOD WATERS ARE STILL ENTERING SOME
HOMES AND BUSINESSES. THE WORST FLOODING REMAINS CONFINED
TO DOWNTOWN CHARLESTON...WEST ASHLEY AND PARTS OF MOUNT PLEASANT.
ALTHOUGH THE HEAVIEST RAINS HAVE ENDED FOR NOW...FLOOD WATERS
WILL BE VERY SLOW TO RECEDE WITH HIGH TIDE APPROACHING.
* FLASH FLOODING IS EXPECTED IN AND AROUND...
JAMES ISLAND...FOLLY BEACH...DOWNTOWN CHARLESTON...
MOUNT PLEASANT...WEST ASHLEY...NORTH CHARLESTON...
DANIEL ISLAND...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HOMES AND BUSINESSES MAY BEGIN TO FLOOD DUE TO THE TORRENTIAL
RAINFALL. IF YOU ARE IN A LOW-LYING AREA...BE PROACTIVE. RAISE
SENSITIVE ITEMS OFF THE GROUND BEFORE FLOODING BEGINS.
NEVER CROSS A ROAD THAT IS FLOODED. MAKE THE SMART CHOICE...
TURN AROUND...DONT DROWN.
TO REPORT FLOODING...CONTACT THE NATIONAL WEATHER SERVICE IN
CHARLESTON TOLL FREE AT 1-888-383-2024.
&&
LAT...LON 3277 7981 3275 7984 3275 7986 3273 7986
3268 7988 3266 7990 3263 7997 3260 7999
3260 8003 3287 8010 3299 7975 3281 7971
$$796
WGUS72 KCHS 281945
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
345 PM EDT TUE AUG 28 2012
SCC015-019-282130-
/O.CON.KCHS.FF.W.0007.000000T0000Z-120828T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHARLESTON SC-BERKELEY SC-
345 PM EDT TUE AUG 28 2012
...A DANGEROUS FLASH FLOOD EVENT CONTINUES FOR THE CHARLESTON METRO
AREA...
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR SOUTH
CENTRAL BERKELEY AND CENTRAL CHARLESTON COUNTIES...
AT 345 PM EDT...SPOTTERS...THE BROADCAST MEDIA AND EMERGENCY
MANAGEMENT OFFICIALS INDICATE WIDESPREAD FLASH FLOODING PERSISTS
ACROSS MUCH OF CENTRAL CHARLESTON AND PARTS OF SOUTH CENTRAL
BERKELEY COUNTIES. NUMEROUS ROADWAYS REMAIN FLOODED...HOMES AND
BUSINESSES ARE REPORTED FLOODED IN SOME AREAS AND WATER RESCUES ARE
STILL IN PROGRESS. THE WORST FLASH FLOODING IS OCCURRING IN THE
DOWNTOWN CHARLESTON...WEST ASHLEY AND MOUNT PLEASANT AREAS. ALTHOUGH
THE HEAVIEST RAINS HAVE ENDED FOR NOW...FLOOD WATERS WILL BE VERY
SLOW TO RECEDE WITH HIGH TIDE APPROACHING. HIGH TIDE WILL OCCUR IN
THE CHARLESTON HARBOR AT 625 PM.
NATIONAL WEATHER SERVICE DOPPLER RADAR AND SPOTTER RAINFALL REPORTS
INDICATE BETWEEN 4 AND 8 INCHES OF RAIN HAS FALLEN IN MANY AREAS
TODAY. THIS IS A DANGEROUS SITUATION. HEED THE ADVISE OF LOCAL
EMERGENCY MANAGEMENT OFFICIALS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE MAJORITY OF FLOOD DEATHS ARE DUE TO PEOPLE DRIVING INTO WATER OF
UNKNOWN DEPTH. JUST ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH TO
SWEEP VEHICLES OFF THE ROAD. EVEN MODERN SPORT UTILITY VEHICLES ARE
VULNERABLE TO FLOODING. TO AVOID THE RISK OF DEATH...FIND AN
ALTERNATE ROUTE IF THE ROAD IS FLOODED.
KEEP CHILDREN AWAY FROM STORM DRAINS...WATER CATCHMENTS...AND
STREAMS. ONLY A FEW INCHES OF MOVING WATER CAN KNOCK A CHILD OFF
THEIR FEET AND SWEEP THEM TO THEIR DEATH.
TO REPORT SIGNIFICANT FLOODING...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN CHARLESTON TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR
REPORTS TO CHS.SKYWARN@NOAA.GOV. REPORTS CAN ALSO BE SENT THROUGH
TWITTER USING #WXREPORT.
&&
LAT...LON 3277 7981 3275 7984 3275 7986 3273 7986
3268 7988 3266 7990 3263 7997 3260 7999
3260 8003 3287 8010 3299 7975 3281 7971
$$608
WGUS52 KCHS 282123
FFWCHS
SCC015-019-290030-
/O.EXT.KCHS.FF.W.0007.000000T0000Z-120829T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
523 PM EDT TUE AUG 28 2012
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL BERKELEY COUNTY IN SOUTHEAST SOUTH CAROLINA...
CENTRAL CHARLESTON COUNTY IN SOUTHEAST SOUTH CAROLINA...
* UNTIL 830 PM EDT
* AT 523 PM EDT...SPOTTERS AND EMERGENCY MANAGEMENT OFFICIALS
CONTINUE TO REPORT WIDESPREAD FLASH FLOODING ACROSS MUCH OF
CENTRAL CHARLESTON COUNTY AND PARTS OF SOUTH CENTRAL BERKELEY
COUNTY. ROADS REMAIN FLOODED AND IMPASSABLE IN MANY AREAS AND
FLOOD WATERS ARE STILL IN SOME HOMES AND BUSINESSES. THE
WORST FLOODING REMAINS CONFINED TO DOWNTOWN CHARLESTON...WEST
ASHLEY AND PARTS OF MOUNT PLEASANT. ALTHOUGH THE HEAVIEST RAINS
HAVE ENDED FOR NOW...FLOOD WATERS WILL BE VERY SLOW TO RECEDE WITH
HIGH TIDE APPROACHING. IN ADDITION...THUNDERSTORMS DEVELOPING
ALONG THE SAVANNAH RIVER MAY IMPACT THE WARNING AREA LATER
THIS EVENING.
* FLASH FLOODING IS EXPECTED IN AND AROUND...
JAMES ISLAND...FOLLY BEACH...DOWNTOWN CHARLESTON...MOUNT
PLEASANT...WEST ASHLEY...NORTH CHARLESTON...DANIEL ISLAND...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
KEEP CHILDREN AWAY FROM STORM DRAINS...WATER CATCHMENTS...AND
STREAMS. ONLY A FEW INCHES OF MOVING WATER CAN KNOCK A CHILD OFF
THEIR FEET AND SWEEP THEM TO THEIR DEATH.
IF YOU ARE IN A LOW-LYING AREA...BE PROACTIVE. RAISE
SENSITIVE ITEMS OFF THE GROUND BEFORE FLOODING BEGINS.
NEVER CROSS A ROAD THAT IS FLOODED. MAKE THE SMART CHOICE...
TURN AROUND...DONT DROWN.
TO REPORT FLOODING...CONTACT THE NATIONAL WEATHER SERVICE IN
CHARLESTON TOLL FREE AT 1-888-383-2024.
&&
LAT...LON 3277 7981 3275 7984 3275 7986 3273 7986
3268 7988 3266 7990 3263 7997 3260 7999
3260 8003 3287 8010 3299 7975 3281 7971
$$554
WGUS72 KCHS 282330
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
730 PM EDT TUE AUG 28 2012
SCC015-019-290030-
/O.CON.KCHS.FF.W.0007.000000T0000Z-120829T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHARLESTON SC-BERKELEY SC-
730 PM EDT TUE AUG 28 2012
...A DANGEROUS FLASH FLOOD EVENT CONTINUES FOR THE CHARLESTON METRO
AREA...
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR SOUTH
CENTRAL BERKELEY AND CENTRAL CHARLESTON COUNTIES...
AT 730 PM EDT...EMERGENCY MANAGEMENT OFFICIALS REPORTED THAT
WIDESPREAD FLASH FLOODING PERSISTS ACROSS MUCH OF CENTRAL CHARLESTON
AND PARTS OF SOUTH CENTRAL BERKELEY COUNTIES. NUMEROUS ROADWAYS AS
WELL AS SOME HOMES AND BUSINESSES REMAIN FLOODED. THE WORST FLASH
FLOODING IS OCCURRING IN THE DOWNTOWN CHARLESTON...WEST ASHLEY AND
MOUNT PLEASANT AREAS. ALTHOUGH THE HEAVIEST RAINS HAVE ENDED FOR
NOW...FLOOD WATERS WILL BE VERY SLOW TO RECEDE WITH HIGH TIDE IN
PROGRESS. LIGHT TO MODERATE RAIN WILL MOVE BACK INTO THE CHARLESTON
METRO AREA BY 830 PM. GIVEN THE CURRENT LEVEL OF FLOODING BEING
OBSERVED...THE FLASH FLOOD WARNING MAY BE EXTENDED BEYOND 830 PM.
NATIONAL WEATHER SERVICE DOPPLER RADAR AND SPOTTER RAINFALL REPORTS
INDICATE BETWEEN 4 AND 8 INCHES OF RAIN HAS FALLEN IN MANY AREAS
TODAY. THIS IS A DANGEROUS SITUATION. HEED THE ADVISE OF LOCAL
EMERGENCY MANAGEMENT OFFICIALS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE MAJORITY OF FLOOD DEATHS ARE DUE TO PEOPLE DRIVING INTO WATER OF
UNKNOWN DEPTH. JUST ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH TO
SWEEP VEHICLES OFF THE ROAD. EVEN MODERN SPORT UTILITY VEHICLES ARE
VULNERABLE TO FLOODING. TO AVOID THE RISK OF DEATH...FIND AN
ALTERNATE ROUTE IF THE ROAD IS FLOODED.
KEEP CHILDREN AWAY FROM STORM DRAINS...WATER CATCHMENTS...AND
STREAMS. ONLY A FEW INCHES OF MOVING WATER CAN KNOCK A CHILD OFF
THEIR FEET AND SWEEP THEM TO THEIR DEATH.
TO REPORT SIGNIFICANT FLOODING...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN CHARLESTON TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR
REPORTS TO CHS.SKYWARN@NOAA.GOV. REPORTS CAN ALSO BE SENT THROUGH
TWITTER USING #WXREPORT.
&&
LAT...LON 3277 7981 3275 7984 3275 7986 3273 7986
3268 7988 3266 7990 3263 7997 3260 7999
3260 8003 3287 8010 3299 7975 3281 7971
$$772
WGUS52 KCHS 290021
FFWCHS
SCC015-019-290430-
/O.EXT.KCHS.FF.W.0007.000000T0000Z-120829T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
821 PM EDT TUE AUG 28 2012
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL BERKELEY COUNTY IN SOUTHEAST SOUTH CAROLINA...
CENTRAL CHARLESTON COUNTY IN SOUTHEAST SOUTH CAROLINA...
* UNTIL 1230 AM EDT
* AT 821 PM EDT...EMERGENCY MANAGEMENT OFFICIALS REPORTED THAT
WIDESPREAD FLASH FLOODING PERSISTS ACROSS MUCH OF CENTRAL
CHARLESTON AND PARTS OF SOUTH CENTRAL BERKELEY COUNTIES.
NUMEROUS ROADWAYS AS WELL AS SOME HOMES AND BUSINESSES REMAIN
FLOODED. THE WORST FLOODING IS OCCURRING IN THE DOWNTOWN
CHARLESTON...WEST ASHLEY AND MOUNT PLEASANT AREAS. ALTHOUGH THE
HEAVIEST RAINS HAVE ENDED FOR NOW...FLOOD WATERS WILL BE VERY
SLOW TO RECEDE. BETWEEN 4 AND 8 INCHES OF RAIN HAS FALLEN
ACROSS MUCH OF THE CHARLESTON METRO AREA SINCE EARLY AFTERNOON.
ANY ADDITIONAL MODERATE TO HEAVY RAIN WILL LEAD TO ADDITIONAL
FLOODING.
* FLASH FLOODING IS EXPECTED IN AND AROUND...
JAMES ISLAND...FOLLY BEACH...DOWNTOWN CHARLESTON...MOUNT
PLEASANT...WEST ASHLEY...NORTH CHARLESTON...DANIEL ISLAND...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WATER DEPTH IS NEARLY IMPOSSIBLE TO DETERMINE AT NIGHT. DO NOT
ATTEMPT TO CROSS WATER ON THE ROADWAY EVEN IF IT APPEARS SHALLOW.
FIND AN ALTERNATE ROUTE. A SHORT DELAY IN YOUR TRAVEL PLANS IS BETTER
THAN LOSING YOUR CAR...OR YOUR LIFE.
TO REPORT FLOODING...CONTACT THE NATIONAL WEATHER SERVICE IN
CHARLESTON TOLL FREE AT 1-888-383-2024.
&&
LAT...LON 3277 7981 3275 7984 3275 7986 3273 7986
3268 7988 3266 7990 3263 7997 3260 7999
3260 8003 3287 8010 3299 7975 3281 7971
$$471
WGUS72 KCHS 290233
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1033 PM EDT TUE AUG 28 2012
SCC015-019-290430-
/O.CON.KCHS.FF.W.0007.000000T0000Z-120829T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHARLESTON SC-BERKELEY SC-
1033 PM EDT TUE AUG 28 2012
...WIDESPREAD FLASH FLOODING CONTINUES IN DOWNTOWN CHARLESTON...
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT FOR
EXTREME SOUTH CENTRAL BERKELEY AND CENTRAL CHARLESTON COUNTIES...
AT 1030 PM EDT...EMERGENCY MANAGEMENT OFFICIALS REPORTED THAT
WIDESPREAD FLASH FLOODING CONTINUED ACROSS MUCH OF CENTRAL
CHARLESTON AND PARTS OF SOUTH CENTRAL BERKELEY COUNTIES. NUMEROUS
ROADWAYS AS WELL AS SOME HOMES AND BUSINESSES REMAIN FLOODED. THE
WORST FLOODING IS OCCURRING IN THE DOWNTOWN CHARLESTON...WEST ASHLEY
AND MOUNT PLEASANT AREAS. FLOOD WATERS WILL BE SLOW TO RECEDE...
ALTHOUGH STEADY IMPROVEMENTS ARE EXPECTED AS LOW TIDE APPROACHES.
BETWEEN 4 AND 8 INCHES OF RAIN HAS FALLEN ACROSS MUCH OF THE
CHARLESTON METRO AREA SINCE EARLY AFTERNOON.
FLASH FLOODING IS EXPECTED IN AND AROUND...
JAMES ISLAND...DOWNTOWN CHARLESTON...MOUNT PLEASANT...WEST
ASHLEY...NORTH CHARLESTON...DANIEL ISLAND...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WATER DEPTH IS NEARLY IMPOSSIBLE TO DETERMINE AT NIGHT. DO NOT
ATTEMPT TO CROSS WATER ON THE ROADWAY EVEN IF IT APPEARS SHALLOW.
FIND AN ALTERNATE ROUTE. A SHORT DELAY IN YOUR TRAVEL PLANS IS BETTER
THAN LOSING YOUR CAR...OR YOUR LIFE.
&&
LAT...LON 3270 7987 3269 7990 3269 7993 3269 7997
3272 8003 3281 8003 3283 7994 3282 7986
3278 7982 3277 7981 3275 7984 3275 7986
3273 7986
$$665
WGUS72 KCHS 290356
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1156 PM EDT TUE AUG 28 2012
SCC015-019-290359-
/O.CAN.KCHS.FF.W.0007.000000T0000Z-120829T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHARLESTON SC-BERKELEY SC-
1156 PM EDT TUE AUG 28 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME SOUTH
CENTRAL BERKELEY AND CENTRAL CHARLESTON COUNTIES...
NO ADDITIONAL HEAVY RAIN IS EXPECTED OVERNIGHT. ALSO...LAW
ENFORCEMENT REPORTED THAT HIGHWAY 17 HAD REOPENED IN CHARLESTON...
AND STANDING WATER SHOULD CONTINUE TO GRADUALLY RECEDE ON AREA ROADS
OVERNIGHT.
ALTHOUGH THE SIGNIFICANT FLOODING HAS ENDED...DRAINAGE SYSTEMS AND
CULVERTS WILL REMAIN FULL. PONDING WATER WILL PERSIST IN LOW-LYING
AREAS AND MAY POSE A HAZARD TO MOTORISTS.
ADDITIONAL RAINFALL COULD DEVELOP AROUND DAYBREAK...AROUND THE TIME
OF HIGH TIDE. CHECK WITH NOAA WEATHER RADIO ALL HAZARDS OR OTHER
LOCAL MEDIA OUTLETS FOR UPDATED INFORMATION...INCLUDING POSSIBLE
WARNINGS.
LAT...LON 3270 7987 3269 7990 3269 7993 3269 7997
3272 8003 3281 8003 3283 7994 3282 7986
3278 7982 3277 7981 3275 7984 3275 7986
3273 7986
$$What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Aug 28, 10:45 AM EDT, 51 minutes earlier.
Area forecast discussion, Aug 28, 10:45 AM EDT, 51 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHARLESTON SC 1045 AM EDT TUE AUG 28 2012 .SYNOPSIS... TROPICAL CYCLONE ISAAC IS EXPECTED TO REMAIN WELL SOUTH AND WEST OF THE REGION BUT WILL BRING DEEP TROPICAL MOISTURE AND ENHANCED RAIN CHANCES TO THE AREA MUCH OF THIS WEEK. ATLANTIC HIGH PRESSURE WILL TRY TO BUILD INTO THE REGION LATE THIS WEEK AND INTO THE WEEKEND. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... DEEP TROPICAL MOISTURE WILL REMAIN OVER THE AREA TODAY WITH HIGH PRESSURE OVER THE MIDWEST AND WESTERN ATLANTIC...AND A TROUGH ALONG THE NORTHEAST SEABOARD AS WELL AS TROPICAL CYCLONE ISAAC OVER THE NORTH CENTRAL GULF OF MEXICO. WITH THESE FEATURES IN PLACE...MOIST SOUTH/SOUTHEAST FLOW WILL PERSIST OVER SOUTHEAST SOUTH CAROLINA AND SOUTHEAST GEORGIA THROUGH THIS EVENING SETTING UP FAVORABLE CONDITIONS FOR WIDESPREAD SHOWERS/ISOLATED THUNDERSTORMS ALONG A COASTAL CONVERGENCE ZONE. WITH PWATS REMAINING AROUND 2.5 INCHES AND SFC DEWPTS REACHING THE MID 70S TODAY...SHOWERS AND/OR THUNDERSTORMS WILL BE CAPABLE OF PRODUCING HEAVY RAINFALL BETWEEN 1-2 INCHES PER HOUR AND THE POTENTIAL FOR FLOODING...ESPECIALLY ALONG COASTAL COUNTIES AS WE APPROACH HIGH TIDE THIS EVENING. HIGH TEMPS WILL BE A BIT TRICKY THIS AFTERNOON BASED ON CLOUD COVER. LATEST VIS SATELLITE IMAGERY INDICATES MODEST SFC HEATING SHOULD OCCUR FOR LOCATIONS SOUTH OF THE SAVANNAH RIVER LATE THIS MORNING INTO EARLY AFTERNOON. OVERALL...HIGH TEMPS WILL LIKELY REACH THE UPPER 80S OVER SOUTHEAST GEORGIA BEFORE CLOUD COVER REDEVELOPS IN A VERY MOIST AIRMASS. FURTHER NORTH...CLOUD COVER WILL REMAIN AN ISSUE THROUGHOUT MOST OF THE DAY. DESPITE A FEW BREAKS IN CLOUD COVER...HEAVY RAIN/SHOWERS WILL LIKELY KEEP HIGH TEMPS IN THE MID 80S. && .SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY/... TONIGHT...SOME DRIER AIR WILL WORK INTO THE AREA FROM THE SOUTH BUT A BACKDOOR COLD FRONT WILL BE APPROACHING FROM THE NORTH AT THE SAME TIME. LOOKS LIKE THE BEST RAIN CHANCES WILL REMAIN ACROSS SOUTHERN SOUTH CAROLINA WHERE THE DEEPER MOISTURE AND FRONTAL CONVERGENCE WILL BE FOUND. THUS WILL HOLD ONTO LIKELY RAIN CHANCES ACROSS THE CHARLESTON METRO BUT DIMINISH THEM THROUGH THE NIGHT SOUTH OF THERE. LOWS MAINLY IN THE LOWER TO MID 70S. MODELS APPEARS TO BE IN DECENT AGREEMENT WITH KEEPING DEEP TROPICAL MOISTURE ACROSS THE REGION THROUGH THURSDAY AS THE REMNANTS OF ISAAC MOVES SLOWLY NORTHWARD INTO THE SOUTHERN AND THEN CENTRAL MS RIVER VALLEY. OUR REGION WILL BE ON THE EXTREME SOUTHERN END OF A BROAD UPPER TROUGH CENTERED OVER NEW ENGLAND ON WEDNESDAY. THIS TROUGH ALONG WITH A WEAK SURFACE BOUNDARY WILL SHIFT SOUTH AND EASTWARD INTO THE ATLANTIC ON THURSDAY AS A BROAD UPPER RIDGE FORMS ACROSS THE UPPER MID WEST AND OH RIVER VALLEY...NORTH OF THE REMNANT CIRCULATION OF ISAAC. IT IS NOT UNCOMMON TO GET A MID AND UPPER LEVEL RIDGE NORTH OF A DISSIPATING TROPICAL SYSTEM DUE TO THE MASSIVE RELEASE OF LATENT HEAT FROM THE PRECIPITATION. THE MAJORITY OF THE MODELS BUILD THIS RIDGE ON TOP OF THE REGION AS THE REMNANTS OF ISAAC AND DEEP TROPICAL MOISTURE MOVE INTO THE CENTRAL PORTION OF THE COUNTRY. WEDNESDAY...GIVEN THE PRESENCE OF DEEP TROPICAL MOISTURE AND A BROAD UPPER TROUGH AND SURFACE FRONT JUST NORTH OF THE REGION...HAVE CONTINUED LIKELY POPS FOR MAINLY SHOWERS AND SOME THUNDERSTORMS. LOCALLY HEAVY RAINFALL WILL CONTINUE TO BE A THREAT WITH THE POTENTIAL FOR SOME MINOR LOW LAND FLOODING...ESPECIALLY DURING THE LATE AFTERNOON/EARLY EVENING HIGH TIDE CYCLE OVER THE METRO AREAS OF CHARLESTON AND SAVANNAH. TEMPS NEAR TO SLIGHTLY BELOW NORMAL GIVEN CLOUD COVER AND LIKELY POPS. WEDNESDAY NIGHT...KEPT CHANCE POPS FOR MAINLY SHOWERS SINCE THE TREND SEEMS TO BE FOR THE CONVECTIVE COVERAGE TO DECREASE DURING THE OVERNIGHT HOURS. MINS NEAR NORMAL. THURSDAY...AS THE DEEP LAYER RIDGE TRIES TO BUILD IN FROM THE NORTH AND WEST...SOME DRYING IS EXPECTED TO OCCUR FROM NORTH TO SOUTH. STILL ABUNDANT TROPICAL MOISTURE OVER AT LEAST THE SOUTHERN HALF OF THE REGION. HAVE KEPT HIGH END CHANCE POPS...WITH A SLIGHTLY HIGHER BIAS OVER THE GA ZONES. THURSDAY NIGHT...CONTINUED THE DOWNWARD POP TREND AS DRIER AIR TRIES TO BUILD IN FROM THE NORTH. LOWS AGAIN NEAR NORMAL. FRIDAY...THE CONSENSUS FROM THE MEDIUM RANGE MODELS INDICATE THAT THE DEEP LAYER RIDGE WILL BE ON TOP OF THE REGION...WITH DRIER CONDITIONS. KEPT LOW END CHANCE POPS...AND THIS MAY NEED TO BE ADJUSTED DOWNWARD IF CURRENT MODEL TRENDS CONTINUE. MAX TEMPS NEAR TO SLIGHTLY ABOVE NORMAL GIVEN BUILDING RIDGE AND MORE SUNSHINE. && .LONG TERM /FRIDAY NIGHT THROUGH MONDAY/... FRIDAY NIGHT...KEPT SLIGHT CHANCE POPS WITH TEMPS NEAR NORMAL. BY SATURDAY...THE UPPER RIDGE BEGINS TO WEAKEN AND SHIFT SOUTHEAST OF THE AREA AS A BROAD UPPER TROUGH...WHICH PICKS UP THE REMNANT MOISTURE OF ISAAC...FORM OVER THE OH RIVER VALLEY. WITH THE FALLING UPPER HEIGHTS AND SOME INCREASE IN DEEP LAYER MOISTURE...HAVE KEPT LOW END CHANCE POPS. BY SUNDAY THROUGH TUESDAY...FORECAST CONFIDENCE BEGINS TO DROP OFF. FOR NOW...HAVE GONE WITH A SOLUTION THAT SHOWS A WEAKENING UPPER TROUGH OVER THE REGION...WITH INCREASING DEEP LAYER MOISTURE. HAVE KEPT LOW END CHANCE POPS...WHICH IS CLOSE TO CLIMO. TEMPS AROUND CLIMO THROUGH THE PERIOD. && .AVIATION /15Z TUESDAY THROUGH SATURDAY/... DEEP TROPICAL MOISTURE WILL CONTINUE ACROSS THE AREA...RESULTING IN PERIODS OF SHOWERS AND ISOLATED THUNDERSTORMS...ESPECIALLY LATE THIS MORNING AND AFTERNOON. EXPECT PERIODS MVFR CIGS MUCH OF THE DAY...ESPECIALLY WITHIN AREAS OF SHOWERS. COULD GET VERY BRIEF IFR CIGS/VSBYS IN HEAVIER SHOWERS. THE BEST CHANCES FOR RAIN TODAY STILL LOOKS TO BE OVER KCHS...WITH A LITTLE LESS COVERAGE EXPECTED CLOSER TO KSAV. GOING WITH MAINLY VFR LATER THIS EVENING AND TONIGHT AS CHANCES FOR PRECIP DIMINISH. HOWEVER...GIVEN DEEP TROPICAL MOISTURE...NOT OUT OF THE QUESTION THAT MVFR CIGS COULD RETURN LATER TONIGHT. EXTENDED AVIATION OUTLOOK...BRIEF PERIODS OF MVFR OR LOWER CONDITIONS WILL BE POSSIBLE THROUGH WEDNESDAY AT BOTH TERMINALS WITH WIDESPREAD RAIN AND A FEW THUNDERSTORMS. CHANCES FOR WIDESPREAD HEAVY RAINFALL BEGIN TO DIMINISH BY THURSDAY AND ARE EXPECTED TO BE MUCH LESS FOR FRIDAY AND SATURDAY. THUS...VFR EXPECTED TO BE MORE DOMINANT LATER THURSDAY THROUGH SATURDAY. && .MARINE... TODAY AND TONIGHT...A SLIGHTLY ENHANCED PRESSURE GRADIENT ACROSS THE WATERS BETWEEN ATLANTIC HIGH PRESSURE AND TROPICAL STORM ISAAC OVER THE GULF OF MEXICO WILL LEAD TO WINDS BETWEEN 15-20 KTS. EXPECT A SLIGHT DECREASE IN WINDS THROUGH THE AFTERNOON AS ATLANTIC HIGH PRESSURE CONTINUES TO BUILD OVER THE WESTERN ATLANTIC AND TROPICAL CYCLONE ISAAC SHIFTS FURTHER NORTHWEST OVER THE GULF OF MEXICO. THE MAIN ISSUE WILL CONTINUE TO BE SEAS WHICH ARE DOMINATED BY AN EAST TO SOUTHEAST SWELL. EXPECT SEAS TO REMAIN NEAR 4-5 FEET THROUGHOUT THE DAY...JUST BELOW ADVISORY LEVELS FOR WATERS BEYOND 20 NM. GIVEN THE EXPECTED TREND THIS AFTERNOON AND LATEST OBSERVATIONS OF SEAS BETWEEN 4-5 FEET AT BUOY 41008...HAVE OPTED TO END THE SMALL CRAFT ADVISORY FOR OUTER GEORGIA WATERS. LATEST SPC MESOANALYSIS DATA INDICATES AN AXIS OF SBCAPE AROUND 3000 J/KG OVER THE WATERS LATE THIS MORNING. THIS IN COMBINATION WITH PWATS NEAR 2.5 INCHES WILL CONTINUE TO PRODUCE WIDESPREAD SHOWERS WITH ISOLATED THUNDERSTORMS THROUGH THIS EVENING. A FEW THUNDERSTORMS MAY BE CAPABLE OF PRODUCING GUSTY WINDS OR AN ISOLATED WATERSPOUT TODAY. WEDNESDAY THROUGH SUNDAY...A WEAK ATLANTIC RIDGE CENTERED SOUTHEAST OF THE AREA WILL HOLD OVER THE REGION WEDNESDAY. BY THURSDAY...THE ATLANTIC RIDGE WILL WEAKEN AND SHIFT FURTHER SOUTHEAST AS A WEAK SURFACE TROUGH/FRONT MOVES INTO THE REGION FROM THE NORTH. ANOTHER RIDGE WILL BUILD FROM THE NORTH FRIDAY AND PART OF SATURDAY...THEN A TROUGH OF LOW PRESSURE WILL BUILD BACK OVER THE SOUTHEAST U.S. LATER SATURDAY AND SUNDAY. OVERALL...WINDS ARE EXPECTED TO BE 15 KTS OR LESS AND SEAS GENERALLY 3 FEET OR LESS THROUGH THE PERIOD. RIP CURRENTS...AN ELEVATED RISK FOR RIP CURRENTS WILL CONTINUE THROUGH MID WEEK DUE TO ONSHORE WINDS...SWELLS AND THE UPCOMING FULL MOON. && .TIDES/COASTAL FLOODING... MODELS CONTINUE TO INDICATE POSITIVE TIDAL ANOMALIES OF ABOUT ONE HALF FOOT THROUGH MID-LATE WEEK AND THIS COULD LEAD TO SHALLOW SALTWATER FLOODING DURING THE TIME OF THE EARLY EVENING HIGH TIDES. THE SITUATION COULD BECOME WORSE IF HEAVY RAINFALL OCCURS DURING THE HIGH TIDE...ESPECIALLY IN THE NORMALLY FLOOD-PRONE AREAS SUCH AS DOWNTOWN CHARLESTON AND SAVANNAH. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...NONE. SC...NONE. MARINE...NONE. && SYNOPSIS... NEAR TERM...DPB SHORT TERM...RFM LONG TERM...RFM AVIATION...RJB/RFM MARINE...RJB/DPB TIDES/COASTAL FLOODING...
Hazardous weather outlook, Aug 28, 4:16 AM EDT, 7 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHARLESTON SC 416 AM EDT TUE AUG 28 2012 GAZ087-088-099>101-114>116-118-137-138-140-SCZ040-042>045-047-290930- JENKINS-SCREVEN-CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS- INLAND BRYAN-INLAND CHATHAM-LONG-INLAND LIBERTY-INLAND MCINTOSH- ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY- INLAND JASPER- 416 AM EDT TUE AUG 28 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. FLOODING...HEAVY RAINFALL WILL BE POSSIBLE AS DEEP TROPICAL MOISTURE REMAINS ACROSS THE AREA. THIS COULD LEAD TO LOCALIZED FLOODING...ESPECIALLY ACROSS LOW-LYING AND POOR DRAINAGE AREAS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. FLOODING...HEAVY RAINFALL WILL BE POSSIBLE AS DEEP TROPICAL MOISTURE REMAINS ACROSS THE AREA. THIS COULD LEAD TO LOCALIZED FLOODING...ESPECIALLY ACROSS LOW-LYING AND POOR DRAINAGE AREAS. .SPOTTER INFORMATION STATEMENT... SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME. GAZ117-119-139-141-SCZ048>051-290930- COASTAL BRYAN-COASTAL CHATHAM-COASTAL LIBERTY-COASTAL MCINTOSH- BEAUFORT-COASTAL COLLETON-CHARLESTON-COASTAL JASPER- 416 AM EDT TUE AUG 28 2012 ...MODERATE RISK FOR RIP CURRENTS IN EFFECT THROUGH THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. MODERATE RISK FOR RIP CURRENTS. FLOODING...HEAVY RAINFALL WILL BE POSSIBLE AS DEEP TROPICAL MOISTURE REMAINS ACROSS THE AREA. THIS COULD LEAD TO LOCALIZED FLOODING...ESPECIALLY ACROSS LOW-LYING AND POOR DRAINAGE AREAS...AS WELL AS ALONG THE COAST DURING THE TIMES OF HIGH TIDE...ESPECIALLY EARLY THIS EVENING. COASTAL HAZARDS...ELEVATED TIDES DUE IN PART TO THE UPCOMING FULL MOON COULD PRODUCE SHALLOW SALT-WATER FLOODING AROUND THE TIME OF HIGH TIDE EARLY THIS EVENING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. FLOODING...HEAVY RAINFALL WILL REMAIN A THREAT AT TIMES THROUGH MID WEEK AS DEEP TROPICAL MOISTURE REMAINS OVER THE AREA. THIS COULD LEAD TO LOCALIZED FLOODING...ESPECIALLY OF LOW- LYING AND POORLY DRAINED AREAS AS WELL AS ALONG THE COAST DURING TIMES OF HIGH TIDE. COASTAL HAZARDS...THE RIP CURRENT RISK WILL REMAIN ELEVATED THROUGH AT LEAST THE MIDDLE OF THE WEEK. ALSO...ELEVATED TIDES WILL CONTINUE AND MAY PRODUCE SHALLOW SALT WATER FLOODING AROUND THE TIMES OF HIGH TIDE EACH EVENING THROUGH LATE WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME. SCZ052-290930- TIDAL BERKELEY- 416 AM EDT TUE AUG 28 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. FLOODING...HEAVY RAINFALL WILL BE POSSIBLE AS DEEP TROPICAL MOISTURE REMAINS ACROSS THE AREA. THIS COULD LEAD TO LOCALIZED FLOODING...ESPECIALLY ACROSS LOW-LYING AND POOR DRAINAGE AREAS...AS WELL AS ALONG THE COAST DURING THE TIMES OF HIGH TIDE...ESPECIALLY EARLY THIS EVENING. COASTAL HAZARDS...ELEVATED TIDES DUE IN PART TO THE UPCOMING FULL MOON COULD PRODUCE SHALLOW SALT WATER FLOODING AROUND THE TIME OF HIGH TIDE THIS EVENING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. FLOODING...HEAVY RAINFALL WILL REMAIN A THREAT AT TIMES THROUGH MID WEEK AS DEEP TROPICAL MOISTURE REMAINS OVER THE AREA. THIS COULD LEAD TO LOCALIZED FLOODING...ESPECIALLY OF LOW- LYING AND POORLY DRAINED AREAS AS WELL AS ALONG THE COAST DURING TIMES OF HIGH TIDE. COASTAL HAZARDS...THE RIP CURRENT RISK WILL REMAIN ELEVATED THROUGH AT LEAST THE MIDDLE OF THE WEEK. ALSO...ELEVATED TIDES WILL CONTINUE AND MAY PRODUCE SHALLOW SALT WATER FLOODING AROUND THE TIMES OF HIGH TIDE EACH EVENING THROUGH LATE WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME. AMZ330-350-352-354-374-290930- 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 EXTENDING FROM 20 TO 60 NM- 416 AM EDT TUE AUG 28 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME.
In the hours before
Special weather statement, Aug 28, 11:02 AM EDT, 34 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1102 AM EDT TUE AUG 28 2012
SCZ045-050-052-281600-
CHARLESTON-INLAND BERKELEY-TIDAL BERKELEY-
1102 AM EDT TUE AUG 28 2012
...FUNNEL CLOUDS ARE POSSIBLE IN PORTIONS OF CHARLESTON AND BERKELEY
COUNTIES THROUGH NOON EDT...
AT 1057 AM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
THUNDERSTORMS...ALONG A LINE EXTENDING FROM NORTH CHARLESTON TO
LEGAREVILLE TO 15 MILES SOUTH OF KIAWAH ISLAND...MOVING NORTHEAST AT
25 MPH.
SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
BOONE HALL PLANTATION...CAINHOY...CAPERS INLET...CHARLES TOWNE
LANDING...CHARLESTON NAVAL COMPLEX...DANIEL ISLAND...DON HOLT
BRIDGE...DOWNTOWN CHARLESTON...FOLLY BEACH...FORT JOHNSON...FORT
SUMTER...GARRIS LANDING...ISLE OF PALMS...JAMES ISLAND...JAMES ISLAND
COUNTY PARK...KIAWAH ISLAND...MAYBANK BRIDGE...MOUNT PLEASANT...MOUNT
PLEASANT REGIONAL AIRPORT...MOUNT PLEASANT TOWNE CENTRE...NORTH
CHARLESTON...PRICE INLET...SULLIVANS ISLAND...WANDO AND WEST
ASHLEY...
PREPARE NOW FOR THE FOLLOWING HAZARDS...
FUNNEL CLOUDS...
MINOR FLOODING OF POOR DRAINAGE AREAS...
CONDITIONS ARE FAVORABLE FOR BRIEF FUNNEL CLOUDS ALONG THE
LINE...ALONG WITH VERY HEAVY RAIN.
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 3303 7968 3288 7963 3284 7969 3279 7973
3277 7981 3275 7984 3275 7986 3268 7988
3263 7997 3260 7999 3259 8012 3288 8000
3328 7959 3327 7958
TIME...MOT...LOC 1501Z 221DEG 21KT 3287 7997 3267 8005
3242 7997Local storm report, Aug 28, 11:09 AM EDT, 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1109 AM EDT TUE AUG 28 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1100 AM HEAVY RAIN 1 ESE SHADOWMOSS 32.84N 80.05W
08/28/2012 E4.00 INCH CHARLESTON SC TRAINED SPOTTER
SPOTTER REPORTED 4 INCHES OF RAIN IN THE LAST 4 HOURS
IN AN ELECTRONIC RAIN GAUGE.
&&
EVENT NUMBER CHS1200709
BDCThe office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 10:59 AM EDT | Areal Flood Advisory | CHS | Berkeley, Charleston | 2 hr |
| Aug 28, 11:02 AM EDT | Special Weather Statement | CHS | Charleston | 58 min |
| Aug 28, 12:07 PM EDT | Special Weather Statement | CHS | Berkeley | 53 min |
| Aug 28, 12:27 PM EDT | Areal Flood Advisory | CHS | Berkeley, Charleston | 3 hr |
| Aug 28, 12:37 PM EDT | Areal Flood Advisory | CHS | Charleston, Colleton, Dorchester | 3 hr |
| Aug 28, 3:53 PM EDT | Areal Flood Advisory | CHS | Jasper | 2 hr |
| Aug 28, 4:56 PM EDT | Severe Thunderstorm Warning | CHS | Hampton, Jasper | 64 min |
| Aug 28, 5:58 PM EDT | Special Weather Statement | CHS | Beaufort, Colleton, Jasper | 47 min |
Nearby
Flash Flood Warnings in South Carolina, 2012Every flash flood 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.