Alert archive / South Carolina / Flash Flood Warnings in 2012
Flash Flood Warning 4, NWS Charleston, SC
NWS Charleston, SC issued this flash flood warning at May 29, 2012, 11:51 PM EDT for 5 counties in South Carolina. It was in force for 3 hr. 1 report 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
- May 29, 2012, 11:51 PM EDT (03:51 UTC)
- Expired
- May 30, 2012, 3:18 AM EDT
- In force
- 3 hr
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC
The radar
The Charleston,SC radar (KCLX), 92 km from the middle of the area, began a volume at 03:51 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 |
|---|---|---|---|
| May 30, 12:31 AM EDT | FLASH FLOOD | Charleston, SC | ASHLEY AVENUE BETWEEN SUMTER STREET AND RACE STREET FLOODED AND IMPASSABLE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 00:00Z, 3.9 hours before the alert went out and 10 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
- 907 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 540 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
634
WGUS52 KCHS 300351
FFWCHS
SCC013-015-019-029-035-300745-
/O.NEW.KCHS.FF.W.0004.120530T0351Z-120530T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
1151 PM EDT TUE MAY 29 2012
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN BEAUFORT COUNTY IN SOUTHEAST SOUTH CAROLINA...
BERKELEY COUNTY IN SOUTHEAST SOUTH CAROLINA...
CHARLESTON COUNTY IN SOUTHEAST SOUTH CAROLINA...
EASTERN COLLETON COUNTY IN SOUTHEAST SOUTH CAROLINA...
DORCHESTER COUNTY IN SOUTHEAST SOUTH CAROLINA...
* UNTIL 345 AM EDT
* AT 1147 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN OCCURRING ALONG A LINE EXTENDING FROM BENNETTS
POINT TO 26 MILES SOUTHEAST OF FRIPP ISLAND...OR ALONG A LINE
EXTENDING FROM 11 MILES WEST OF EDISTO BEACH TO 32 MILES SOUTH OF
EDISTO BEACH...MOVING NORTHEAST AT 15 MPH.
TORRENTIAL RAINS ASSOCIATED WITH TROPICAL DEPRESSION BERYL WERE
EXPANDING OVER THE AREA AND WILL CONTINUE INTO THE OVERNIGHT
HOURS. BOTH RURAL AND URBAN FLASH FLOODING WILL LIKELY OCCUR WITH
SOME RAINFALL AMOUNTS FROM 3 TO 5 INCHES LOCALLY WITHIN THE
WARNING AREA.
* FLASH FLOODING IS EXPECTED IN AND AROUND...
FRIPP ISLAND...LADYS ISLAND...BENNETTS POINT...WHITE HALL...GREEN
POND...HENDERSONVILLE...ASHEPOO...CHARLESTON...MOUNT PLEASANT...
SUMMERVILLE...MONCKS CORNER...JACKSONBORO...DOWNTOWN CHARLESTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HIGH TIDE OVERNIGHT WILL INHIBIT RUNOFF OF HEAVY RAIN...FLOODING
AREAS OF POOR DRAINAGE IN DOWNTOWN CHARLESTON. AREAS MOST PRONE TO
FLOODING INCLUDE THE MARKET...CROSSTOWN...EAST BAY STREET AND
MORRISON DRIVE.
TO REPORT FLOODING...CONTACT THE NATIONAL WEATHER SERVICE IN
CHARLESTON TOLL FREE AT 1-888-383-2024.
&&
LAT...LON 3300 7936 3301 7957 3290 7957 3275 7986
3260 7999 3255 8020 3243 8035 3249 8036
3248 8047 3231 8044 3242 8071 3268 8082
3327 8063 3333 8052 3326 8043 3327 8030
3345 8022 3351 7999 3332 7974 3314 7926
$$3 follow-up statements
677
WGUS72 KCHS 300520
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
120 AM EDT WED MAY 30 2012
SCC013-300523-
/O.CAN.KCHS.FF.W.0004.000000T0000Z-120530T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BEAUFORT SC-
120 AM EDT WED MAY 30 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHEASTERN
BEAUFORT COUNTY...
LAT...LON 3300 7936 3301 7957 3290 7957 3275 7986
3260 7999 3255 8020 3243 8035 3249 8036
3248 8047 3253 8051 3261 8057 3276 8079
3327 8063 3333 8052 3326 8043 3327 8030
3345 8022 3351 7999 3332 7974 3314 7926
$$
SCC015-019-029-035-300745-
/O.CON.KCHS.FF.W.0004.000000T0000Z-120530T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DORCHESTER SC-CHARLESTON SC-BERKELEY SC-COLLETON SC-
120 AM EDT WED MAY 30 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM EDT FOR
EASTERN COLLETON...BERKELEY...CHARLESTON AND DORCHESTER COUNTIES...
AT 115 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE AREAS OF HEAVY RAIN CAPABLE OF PRODUCING FLASH FLOODING.
THESE RAINS WERE LOCATED ALONG A LINE EXTENDING FROM 15 MILES
SOUTHEAST OF BULL ISLAND TO AWENDAW TO 7 MILES SOUTHWEST OF
CROSS...OR ALONG A LINE EXTENDING FROM 23 MILES EAST OF MOUNT
PLEASANT TO 13 MILES WEST OF MCCLELLANVILLE TO 11 MILES WEST OF
MONCKS CORNER...MOVING NORTH AT 30 MPH.
FLASH FLOODING IS EXPECTED IN AND AROUND BULL ISLAND... CAINHOY...
CAPE ISLAND...CAPE ROMAIN...CAPERS INLET...CHARLES TOWNE
LANDING...DOWNTOWN CHARLESTON...EADYTOWN...EASTERN LAKE
MARION...EDISTO ISLAND...FORT JOHNSON...GARRIS LANDING...
HARLEYVILLE...HUGER...JAMES ISLAND...JAMESTOWN...SAINT GEORGE...
SAINT STEPHEN...SANGAREE...SANTEE COASTAL RESERVE...SUMMERVILLE.
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 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 3300 7936 3301 7957 3290 7957 3275 7986
3260 7999 3255 8020 3243 8035 3249 8036
3248 8047 3253 8051 3261 8057 3276 8079
3327 8063 3333 8052 3326 8043 3327 8030
3345 8022 3351 7999 3332 7974 3314 7926
$$554
WGUS72 KCHS 300616
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
216 AM EDT WED MAY 30 2012
SCC029-300621-
/O.CAN.KCHS.FF.W.0004.000000T0000Z-120530T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COLLETON SC-
216 AM EDT WED MAY 30 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EASTERN COLLETON
COUNTY...
LAT...LON 3300 7936 3301 7957 3290 7957 3275 7986
3269 7991 3279 8001 3285 8007 3290 8017
3300 8030 3310 8044 3333 8052 3326 8043
3327 8030 3345 8022 3351 7999 3332 7974
3314 7926
$$
SCC015-019-035-300745-
/O.CON.KCHS.FF.W.0004.000000T0000Z-120530T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DORCHESTER SC-CHARLESTON SC-BERKELEY SC-
216 AM EDT WED MAY 30 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM EDT FOR
BERKELEY...EASTERN CHARLESTON AND NORTHEASTERN DORCHESTER COUNTIES...
AT 212 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE AREA OF HEAVY RAIN CAPABLE OF PRODUCING FLASH FLOODING.
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM MCCLELLANVILLE
TO JAMESTOWN TO 7 MILES WEST OF CROSS...OR ALONG A LINE EXTENDING
FROM MCCLELLANVILLE TO 19 MILES NORTHEAST OF MONCKS CORNER TO 17
MILES NORTHEAST OF INDIAN FIELD...MOVING NORTH AT 30 MPH.
HEAVY RAINS IN ASSOCIATION WITH TROPICAL DEPRESSION BERYL HAD MOVED
INTO NORTHEAST CHARLESTON COUNTY AND UPPER BERKELEY COUNTY. AN
ADDITIONAL 1 TO 2 INCHES OF RAIN IS POSSIBLE.
FLASH FLOODING IS EXPECTED IN AND AROUND JAMESTOWN...BONNEAU
BEACH...BULL ISLAND...CAPE ROMAIN...CAPERS INLET...DOWNTOWN
CHARLESTON...EADYTOWN...HARLEYVILLE...HUGER... JAMESTOWN...
JEDBURG...AND SAINT STEPHEN.
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 3300 7936 3301 7957 3290 7957 3275 7986
3269 7991 3279 8001 3285 8007 3290 8017
3300 8030 3310 8044 3333 8052 3326 8043
3327 8030 3345 8022 3351 7999 3332 7974
3314 7926
$$581
WGUS72 KCHS 300718
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
318 AM EDT WED MAY 30 2012
SCC015-019-035-300728-
/O.CAN.KCHS.FF.W.0004.000000T0000Z-120530T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DORCHESTER SC-CHARLESTON SC-BERKELEY SC-
318 AM EDT WED MAY 30 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR BERKELEY...EASTERN
CHARLESTON AND NORTHEASTERN DORCHESTER COUNTIES...
TO REPORT SIGNIFICANT FLOODING...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN CHARLESTON TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR
REPORTS TO CHS.SKYWARN@NOAA.GOV. REPORTS CAN ALSO BE SENT THROUGH
TWITTER USING #WXREPORT.
LAT...LON 3300 7936 3301 7957 3290 7957 3275 7986
3269 7991 3279 8001 3285 8007 3290 8017
3300 8030 3310 8044 3333 8052 3326 8043
3327 8030 3345 8022 3351 7999 3332 7974
3314 7926
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 9:00 PM EDT | Areal Flood Advisory | CHS | Berkeley, Dorchester | 3 hr |
| May 29, 9:08 PM EDT | Areal Flood Advisory | CHS | Allendale | 112 min |
| May 29, 9:59 PM EDT | Areal Flood Advisory | CHS | Beaufort, Hampton, Jasper | 2 hr |
| May 29, 10:36 PM EDT | Flash Flood Warning | CHS | Beaufort, Jasper | 2 hr |
| May 29, 11:28 PM EDT | Areal Flood Advisory | CHS | Berkeley, Charleston, Dorchester | 3 hr |
| May 30, 12:05 AM EDT | Special Weather Statement | CHS | Berkeley, Charleston | 85 min |
| May 30, 6:42 AM EDT | Lake Wind Advisory | CHS | Berkeley | 4 hr |
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.