Alert archive / South Carolina / Flash Flood Warnings in 2016

Flash Flood Warning 5, NWS Charleston, SC

May 29, 2016Screven County, Georgia; Allendale County, Hampton County, Jasper County, South Carolina

NWS Charleston, SC issued this flash flood warning at May 29, 2016, 2:25 PM EDT for Screven County, Georgia; Allendale County, Hampton County, Jasper County, 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, 2016, 2:25 PM EDT (18:25 UTC)
Expired
May 29, 2016, 5:30 PM EDT
In force
3 hr
Issued by
NWS Charleston, SC
Area
Storm-based polygon
Flood severity
None

Counties Screven County, GA, Allendale County, SC, Hampton County, SC, Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 6 km from the middle of the area, began a volume at 18:26 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

TimeReportWhereRemark
May 29, 2:35 PM EDTFLASH FLOOD2 E Lena, SCHAMPTON COUNTY DISPATCH REPORTED A FEW ROADS IMPASSABLE DUE TO HEAVY RAIN. THIS INCLUDES HW-601 NEAR PATRICK HENRY ACADEMY...GRASS HILL ROAD AT BLACK CREEK ROAD...AND GINN HILL ROAD AT TURNER EXPRESSWAY.

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 12:00Z, 6.4 hours before the alert went out and 97 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 2016-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 666 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2016-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 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
666 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
537 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
216 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

As transmitted.

851 
WGUS52 KCHS 291825
FFWCHS
GAC251-SCC005-049-053-292130-
/O.NEW.KCHS.FF.W.0005.160529T1825Z-160529T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
225 PM EDT SUN MAY 29 2016

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR PORTIONS OF...
  SCREVEN COUNTY IN SOUTHEASTERN GEORGIA...
  HAMPTON COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  JASPER COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  ALLENDALE COUNTY IN SOUTHEASTERN SOUTH CAROLINA...

* UNTIL 530 PM EDT

* AT 223 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO
  BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  HAMPTON...YEMASSEE...LAKE WARREN STATE PARK...VARNVILLE...ESTILL...
  GIFFORD...FURMAN AND SCOTIA.

VERY HEAVY RAIN HAS FALLEN ACROSS THE AREA OVER THE LAST 1 TO 2
HOURS WITH RAINFALL AMOUNTS OF 1 TO 3 INCHES BASED ON RADAR
ESTIMATES. THE BAND OF HEAVY RAIN IS NEARLY STATIONARY AND WILL
CONTINUE TO DROP VERY HEAVY RAIN OVER THE NEXT FEW HOURS. ADDITIONAL
RAINFALL AMOUNTS OF UP TO 3 INCHES WILL BE POSSIBLE MAINLY FROM
AROUND GRAYS TO ESTILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

REPORT FLOODING DIRECTLY TO THE CHARLESTON NATIONAL WEATHER SERVICE
AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO NWS.CHARLESTONSC@NOAA.GOV.

&&

LAT...LON 3273 8085 3268 8085 3266 8087 3263 8085
      3250 8086 3270 8157 3298 8139

$$
3 follow-up statements
572 
WGUS72 KCHS 291953
FFSCHS

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
353 PM EDT SUN MAY 29 2016

GAC251-SCC005-049-053-292130-
/O.CON.KCHS.FF.W.0005.000000T0000Z-160529T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SCREVEN GA-HAMPTON SC-JASPER SC-ALLENDALE SC-
353 PM EDT SUN MAY 29 2016

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR
PORTIONS OF SCREVEN...HAMPTON...JASPER AND ALLENDALE COUNTIES...

AT 350 PM EDT...DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS
PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS
EXPECTED TO BEGIN SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HAMPTON...YEMASSEE...LAKE WARREN STATE PARK...VARNVILLE...ESTILL...
GIFFORD...FURMAN AND SCOTIA.

SOME OF THE HEAVY RAIN HAS SHIFTED SOUTH OF THE WARNED AREA WHILE
ANOTHER BAND HAS SET UP IN A NORTH TO SOUTH ORIENTED REGION ACROSS
SOUTHERN ALLENDALE COUNTY AND WESTERN HAMPTON COUNTY. RAINFALL RATES
IN THIS AREA WILL CONTINUE TO BE 1 TO 2 INCHES PER HOUR. RAINFALL
AMOUNTS OF 1 TO 3 INCHES HAVE LIKELY FALLEN WITHIN THE WARNED AREA
SO FAR. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

REPORT FLOODING DIRECTLY TO THE CHARLESTON NATIONAL WEATHER SERVICE
AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO NWS.CHARLESTONSC@NOAA.GOV.

&&

LAT...LON 3273 8085 3268 8085 3266 8087 3263 8085
      3250 8086 3270 8157 3298 8139

$$
519 
WGUS72 KCHS 292052
FFSCHS

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
452 PM EDT SUN MAY 29 2016

GAC251-292059-
/O.CAN.KCHS.FF.W.0005.000000T0000Z-160529T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SCREVEN GA-
452 PM EDT SUN MAY 29 2016

...THE FLASH FLOOD WARNING FOR SCREVEN COUNTY IS CANCELLED...

FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO
HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3285 8111 3257 8111 3265 8139 3267 8141
      3269 8141 3270 8143 3274 8141 3277 8143
      3277 8142 3278 8143 3279 8142 3284 8142
      3286 8146 3288 8146 3298 8139

$$

SCC005-049-053-292130-
/O.CON.KCHS.FF.W.0005.000000T0000Z-160529T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAMPTON SC-JASPER SC-ALLENDALE SC-
452 PM EDT SUN MAY 29 2016

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR
PORTIONS OF HAMPTON...JASPER AND ALLENDALE COUNTIES...

AT 449 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY
RAIN ACROSS THE WARNED AREA.  FLASH FLOODING IS EXPECTED TO BEGIN
SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
LAKE WARREN STATE PARK...ESTILL...GIFFORD...FURMAN...SCOTIA...LURAY...
SHIRLEY AND LENA.

DOPPLER RADAR ESTIMATES OF 2 TO 3 INCHES ARE WIDESPREAD ACROSS
SOUTHERN ALLENDALE COUNTY AS WELL AS MUCH OF CENTRAL HAMPTON COUNTY
ESPECIALLY AROUND ESTILL. IN FACT...HAMPTON COUNTY DISPATCH REPORTED
A FEW ROADS THAT WERE CLOSED AND IMPASSABLE JUST EAST OF ESTILL
INCLUDING HIGHWAY 601...GRASS HILLS ROAD...AND GINN HILL ROAD. LIGHT
TO MODERATE RAIN CONTINUES ACROSS THIS AREA AND ADDITIONAL RAINFALL
AMOUNTS OF HALF AN INCH TO AN INCH WILL BE POSSIBLE THROUGH 530 PM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

REPORT FLOODING DIRECTLY TO THE CHARLESTON NATIONAL WEATHER SERVICE
AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO NWS.CHARLESTONSC@NOAA.GOV.

&&

LAT...LON 3285 8111 3257 8111 3265 8139 3267 8141
      3269 8141 3270 8143 3274 8141 3277 8143
      3277 8142 3278 8143 3279 8142 3284 8142
      3286 8146 3288 8146 3298 8139

$$
701 
WGUS72 KCHS 292134
FFSCHS

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
534 PM EDT SUN MAY 29 2016

SCC005-049-053-292142-
/O.EXP.KCHS.FF.W.0005.000000T0000Z-160529T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAMPTON SC-JASPER SC-ALLENDALE SC-
534 PM EDT SUN MAY 29 2016

...THE FLASH FLOOD WARNING FOR HAMPTON...JASPER AND ALLENDALE
COUNTIES HAS EXPIRED...

THE HEAVIEST AND MOST INTENSE RAINFALL HAS ENDED AND NOW ONLY LIGHT
TO MODERATE RAIN CONTINUES ACROSS THE AREA. NO ADDITIONAL NEW
FLOODING IS EXPECTED ACROSS THE REGION...HOWEVER ANOTHER HALF OF AN
INCH OF RAIN WILL BE POSSIBLE THROUGH THE NEXT 1 TO 2 HOURS.
MOTORISTS SHOULD CONTINUE TO OBEY ANY ROAD CLOSURE SIGNS AND
BARRICADES PUT IN PLACE BY LAW ENFORCEMENT OFFICIALS.

LAT...LON 3285 8111 3257 8111 3265 8139 3267 8141
      3269 8141 3270 8143 3274 8141 3277 8143
      3277 8142 3278 8143 3279 8142 3284 8142
      3286 8146 3288 8146 3298 8139

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 7:32 AM EDTAreal Flood AdvisoryCHSBulloch, Effingham, Jenkins, Screven118 min
May 29, 9:55 AM EDTFlash Flood WarningCHSBryan, Bulloch, Effingham5 hr
May 29, 12:38 PM EDTAreal Flood AdvisoryCHSBulloch, Effingham, Screven112 min
May 29, 3:23 PM EDTAreal Flood AdvisoryCHSEffingham, Screven112 min
May 29, 2:46 AM EDTAreal Flood AdvisoryCHSBeaufort, Jasper59 min
May 29, 3:57 AM EDTAreal Flood AdvisoryCHSBeaufort, Hampton, Jasper93 min
May 29, 5:35 AM EDTFlash Flood WarningCHSBeaufort, Jasper115 min
May 29, 7:32 AM EDTFlash Flood WarningCHSBeaufort, Jasper3 hr
May 29, 8:54 AM EDTFlash Flood WarningCHSBerkeley, Charleston, Dorchester3 hr
May 29, 10:13 AM EDTRiver Flood WarningCHSBerkeley, Georgetown, Williamsburg48 hr
May 29, 10:52 AM EDTAreal Flood AdvisoryCHSColleton, Dorchester113 min
May 29, 12:13 PM EDTAreal Flood AdvisoryCHSColleton2 hr
May 29, 1:09 PM EDTAreal Flood AdvisoryCHSBeaufort, Hampton, Jasper111 min
May 29, 5:57 PM EDTAreal Flood AdvisoryCHSAllendale, Hampton93 min
May 29, 7:24 PM EDTAreal Flood AdvisoryCHSAllendale, Colleton, Hampton66 min

Nearby

Flash Flood Warnings in South Carolina, 2016Flash Flood Warnings in Georgia, 2016Every flash flood warning in 2016

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.