Alert archive / Georgia / Flash Flood Warnings in 2016

Flash Flood Warning 10, NWS Charleston, SC

October 8, 20165 counties in Georgia; 5 counties in South Carolina

NWS Charleston, SC issued this flash flood warning at Oct 8, 2016, 12:20 AM EDT for 5 counties in Georgia; 5 counties in South Carolina. It was in force for 10 hr. 3 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
Oct 8, 2016, 12:20 AM EDT (04:20 UTC)
Expired
Oct 8, 2016, 10:45 AM EDT
In force
10 hr
Issued by
NWS Charleston, SC
Area
Storm-based polygon
Flood severity
None

Counties Bryan County, GA, Bulloch County, GA, Chatham County, GA, Effingham County, GA, Screven County, GA, Allendale County, SC, Beaufort County, SC, Colleton County, SC, Hampton County, SC, Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 27 km from the middle of the area, began a volume at 04:22 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
Oct 8, 2:00 AM EDTFLASH FLOOD2 Se Mcphersonville, SCNWS EMPLOYEE REPORTED TWO SECTIONS OF POCOTALIGO RD WERE WASHED OUT WHERE WATER WAS OVERFLOWING FROM BUCKFIELD POND INTO TULIFINY RIVER.
Oct 8, 2:00 AM EDTFLASH FLOOD2 Sw Early Branch, SCNWS EMPLOYEE REPORTED A SECTION OF POCOTALIGO ROAD NEAR VIZSLA LOOP IS WASHED OUT.
Oct 8, 2:00 AM EDTFLASH FLOOD4 Ssw Georgia Southern, GAIMAGE FROM SOCIAL MEDIA SHOWS A MOBILE HOME AND SURROUNDING BUILDINGS INUNDATED WITH WATER IN THE 8300 BLOCK OF SINKHOLE RD

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, 4.3 hours before the alert went out and 127 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 00:00Z on 2016-10-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 248 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2016-10-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 306 square meters per square second.19395878Sfc1 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
248 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
569 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
306 m²/s²
0-3 km storm-relative helicity
345 m²/s²
Significant tornado parameter
0.4
Supercell composite
7.6

Open this sounding in Storm Lab

The text

As transmitted.

855 
WGUS52 KCHS 080420
FFWCHS
GAC029-031-051-103-251-SCC005-013-029-049-053-081015-
/O.NEW.KCHS.FF.W.0010.161008T0420Z-161008T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
1220 AM EDT SAT OCT 8 2016

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR PORTIONS OF...
  CHATHAM COUNTY IN SOUTHEASTERN GEORGIA...
  BULLOCH COUNTY IN SOUTHEASTERN GEORGIA...
  EFFINGHAM COUNTY IN SOUTHEASTERN GEORGIA...
  SCREVEN COUNTY IN SOUTHEASTERN GEORGIA...
  BRYAN COUNTY IN SOUTHEASTERN GEORGIA...
  HAMPTON COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  BEAUFORT COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  JASPER COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  ALLENDALE COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  COLLETON COUNTY IN SOUTHEASTERN SOUTH CAROLINA...

* UNTIL 615 AM EDT

* AT 1215 AM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. 3 TO 7 INCHES OF RAIN HAS
  FALLEN SO FAR. FLASH FLOODING IS EXPECTED OVER THE NEXT FEW
  HOURS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  STATESBORO...POOLER...WALTERBORO...RIDGELAND...SYLVANIA...
  SPRINGFIELD...HAMPTON AND PEMBROKE.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES WILL BE POSSIBLE
THROUGH THE REMAINDER OF THE EARLY MORNING HOURS.

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 3261 8200 3265 8185 3306 8113 3303 8108
      3310 8094 3306 8090 3313 8089 3318 8079
      3315 8070 3307 8062 3305 8039 3284 8040
      3197 8149 3197 8159 3206 8165 3211 8176
      3224 8182 3227 8197 3242 8192 3254 8203

$$
2 follow-up statements
097 
WGUS72 KCHS 080813
FFSCHS

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
413 AM EDT SAT OCT 8 2016

GAC029-031-051-103-251-SCC005-013-029-049-053-081015-
/O.CON.KCHS.FF.W.0010.000000T0000Z-161008T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHATHAM GA-BULLOCH GA-EFFINGHAM GA-SCREVEN GA-BRYAN GA-HAMPTON SC-
BEAUFORT SC-JASPER SC-ALLENDALE SC-COLLETON SC-
413 AM EDT SAT OCT 8 2016

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 AM EDT FOR
PORTIONS OF CHATHAM...BULLOCH...EFFINGHAM...SCREVEN...BRYAN...
HAMPTON...BEAUFORT...JASPER...ALLENDALE AND COLLETON COUNTIES...

AT 405 AM EDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE WARNED
AREA. 8 TO 12 INCHES OF RAIN HAS FALLEN SO FAR AND IF FLASH FLOODING
IS NOT ONGOING, IT SHOULD BEGIN SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
STATESBORO...POOLER...WALTERBORO...RIDGELAND...SYLVANIA...
SPRINGFIELD...HAMPTON AND PEMBROKE.

THE HEAVIEST RAIN CONTINUES TO FALL MAINLY ACROSS COLLETON, HAMPTON,
NORTHERN BEAUFORT, JASPER, AND EFFINGHAM COUNTIES. RAINFALL RATES
WILL CONTINUE TO RANGE BETWEEN 1 AND 2 INCHES PER HOUR. ADDITIONAL
RAINFALL AMOUNTS OF 2 TO 4 INCHES WILL BE POSSIBLE THROUGH THE NEXT
FEW HOURS.

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 3261 8200 3265 8185 3306 8113 3303 8108
      3310 8094 3306 8090 3313 8089 3318 8079
      3315 8070 3307 8062 3305 8039 3284 8040
      3197 8149 3197 8159 3206 8165 3211 8176
      3224 8182 3227 8197 3242 8192 3254 8203

$$
958 
WGUS52 KCHS 081003
FFWCHS
GAC029-031-051-103-251-SCC005-013-029-049-053-081445-
/O.EXT.KCHS.FF.W.0010.000000T0000Z-161008T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
603 AM EDT SAT OCT 8 2016

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS EXTENDED THE

* FLASH FLOOD WARNING FOR PORTIONS OF...
  CHATHAM COUNTY IN SOUTHEASTERN GEORGIA...
  BULLOCH COUNTY IN SOUTHEASTERN GEORGIA...
  EFFINGHAM COUNTY IN SOUTHEASTERN GEORGIA...
  SCREVEN COUNTY IN SOUTHEASTERN GEORGIA...
  BRYAN COUNTY IN SOUTHEASTERN GEORGIA...
  HAMPTON COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  BEAUFORT COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  JASPER COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  ALLENDALE COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  COLLETON COUNTY IN SOUTHEASTERN SOUTH CAROLINA...

* UNTIL 1045 AM EDT

* AT 602 AM EDT...DOPPLER RADAR SHOWS HEAVY RAINS ASSOCIATED WITH
  HURRICANE MATTHEW IMPACTING THE AREA. MUCH OF THE REGION HAS
  ALREADY SEEN RAIN AMOUNTS 5 TO 9 INCHES. ALTHOUGH RAIN AMOUNTS
  WILL GRADUALLY DIMINISH AS MATTHEW MOVES NORTH OF THE AREA...IT
  WILL TAKE SOME TIME FOR FLOOD WATERS TO SUBSIDE.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  STATESBORO...POOLER...WALTERBORO...RIDGELAND...SYLVANIA...
  SPRINGFIELD...HAMPTON AND PEMBROKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3261 8200 3265 8185 3306 8113 3303 8108
      3310 8094 3306 8090 3313 8089 3318 8079
      3315 8070 3307 8062 3305 8039 3284 8040
      3197 8149 3197 8159 3206 8165 3211 8176
      3224 8182 3227 8197 3242 8192 3254 8203

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 8, 10:45 AM EDTAreal Flood WarningCHSBryan, Bulloch, Candler, Chatham, Effingham, Evans and 5 more6 hr
Oct 8, 3:54 AM EDTRiver Flood WarningCHSColleton, Dorchester13 days
Oct 8, 3:54 AM EDTRiver Flood WarningCHSBerkeley, Georgetown, Williamsburg5 days
Oct 8, 7:27 AM EDTFlash Flood WarningCHSBerkeley, Dorchester4 hr
Oct 8, 9:42 AM EDTFlash Flood WarningCHSBerkeley, Charleston, Colleton, Dorchester108 min
Oct 8, 11:27 AM EDTAreal Flood WarningCHSBeaufort, Berkeley, Charleston, Colleton, Dorchester5 hr
Oct 8, 1:53 PM EDTSmall Craft AdvisoryCHS8 days
Oct 8, 3:57 PM EDTLake Wind AdvisoryCHSBerkeley19 hr

Nearby

Flash Flood Warnings in Georgia, 2016Flash Flood Warnings in South Carolina, 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.