Alert archive / Georgia / Flash Flood Warnings in 2016

Flash Flood Warning 8, NWS Charleston, SC

October 7, 2016Beaufort County, Jasper County, South Carolina; 5 counties in Georgia

NWS Charleston, SC issued this flash flood warning at Oct 7, 2016, 5:48 PM EDT for Beaufort County, Jasper County, South Carolina; 5 counties in Georgia. It was in force for 17 hr. 6 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 7, 2016, 5:48 PM EDT (21:48 UTC)
Expired
Oct 8, 2016, 10:45 AM EDT
In force
17 hr
Issued by
NWS Charleston, SC
Area
Storm-based polygon
Flood severity
None

Counties Bryan County, GA, Chatham County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Beaufort County, SC, Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 84 km from the middle of the area, began a volume at 21:47 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 7, 9:00 PM EDTFLASH FLOOD1 Wnw I-16/I-95 Interch, GAWEB REPORTS SHOW WATER ENTERED MULTIPLE HOUSES ON TAPPAN ZEE RD IN POOLER
Oct 8, 3:45 AM EDTHEAVY RAIN 11.09Savannah Airport, GASTORM TOTAL RAINFALL THUS FAR OF 11.09 INCHES SINCE MIDNIGHT FRIDAY AT SAV ASOS.
Oct 8, 4:00 AM EDTFLASH FLOOD1 Ene Hilton Head Airpo, SCA PORTION OF FORT WALKER DRIVE WAS UNDERMINED AND COMPLETELY COLLAPSED DURING HEAVY RAIN FROM HURRICANE MATTHEW.
Oct 8, 4:00 AM EDTFLASH FLOOD1 Wsw Hilton Head Airpo, SCVIDEO SHOWS FLOODING AT THE TABBY WALK VILLAS ON HILTON HEAD ISLAND. AN UNKNOWN DEPTH OF WATER ENTERED FIRST FLOOR UNITS BASED ON THE VIDEO.
Oct 8, 7:30 AM EDTHEAVY RAIN 9.35Pooler, GATHE PUBLIC REPORTED A RAINFALL TOTAL OF 9.35 INCHES BETWEEN 830 AM YESTERDAY TO 7 AM THIS MORNING.
Oct 8, 10:00 AM EDTHEAVY RAIN 17.36Hunter Army Airfield, GAAT LEAST 17.36 INCHES OF PRECIPITATION HAS FALLEN AT HUNTER ARMY AIRFIELD IN THE LAST 24 HOURS AS REPORTED BY THE ASOS.

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, 9.8 hours before the alert went out and 150 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 2016-10-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 220 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 2016-10-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 253 square meters per square second.1939Sfc1 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
220 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
471 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
253 m²/s²
0-3 km storm-relative helicity
250 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

Open this sounding in Storm Lab

The text

As transmitted.

509 
WGUS52 KCHS 072148
FFWCHS
GAC029-051-179-183-191-SCC013-053-080145-
/O.NEW.KCHS.FF.W.0008.161007T2148Z-161008T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
548 PM EDT FRI OCT 7 2016

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR PORTIONS OF...
  CHATHAM COUNTY IN SOUTHEASTERN GEORGIA...
  LIBERTY COUNTY IN SOUTHEASTERN GEORGIA...
  LONG COUNTY IN SOUTHEASTERN GEORGIA...
  BRYAN COUNTY IN SOUTHEASTERN GEORGIA...
  MCINTOSH COUNTY IN SOUTHEASTERN GEORGIA...
  BEAUFORT COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  JASPER COUNTY IN SOUTHEASTERN SOUTH CAROLINA...

* UNTIL 945 PM EDT

* AT 545 PM EDT...DOPPLER RADAR INDICATED HEAVY RAIN ASSOCIATED WITH
  HURRICANE MATTHEW MOVING ONSHORE. THE COMBINATION OF HEAVY RAIN AND 
  INCREASING TIDES WILL PRODUCE FLASH FLOODING THIS EVENING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SAVANNAH...HILTON HEAD ISLAND...HINESVILLE...POOLER...BLUFFTON...
  BEAUFORT...PORT ROYAL AND RICHMOND HILL.

ADDITIONAL RAINFALL AMOUNTS OF 3 TO 5 INCHES ARE POSSIBLE IN
THE NEXT FEW HOURS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3129 8142 3143 8161 3158 8170 3166 8183
      3213 8133 3224 8119 3223 8114 3229 8112
      3264 8068 3245 8042 3230 8041 3225 8057
      3212 8072 3207 8083 3201 8081 3196 8082
      3171 8110 3162 8110 3140 8123 3130 8122

$$
3 follow-up statements
008 
WGUS52 KCHS 080130
FFWCHS
GAC029-051-179-183-191-SCC013-053-080945-
/O.EXT.KCHS.FF.W.0008.000000T0000Z-161008T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
930 PM EDT FRI OCT 7 2016

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS EXTENDED THE

* FLASH FLOOD WARNING FOR PORTIONS OF...
  CHATHAM COUNTY IN SOUTHEASTERN GEORGIA...
  LIBERTY COUNTY IN SOUTHEASTERN GEORGIA...
  LONG COUNTY IN SOUTHEASTERN GEORGIA...
  BRYAN COUNTY IN SOUTHEASTERN GEORGIA...
  MCINTOSH COUNTY IN SOUTHEASTERN GEORGIA...
  BEAUFORT COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  JASPER COUNTY IN SOUTHEASTERN SOUTH CAROLINA...

* UNTIL 545 AM EDT SATURDAY

* AT 919 PM EDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE
  WARNED AREA. 2 TO 6 INCHES OF RAIN HAS ALREADY FALLEN, WITH
  ISOLATED HIGHER AMOUNTS APPROACHING 10 INCHES. IF FLASH
  FLOODING IS NOT ALREADY OCCURRING, IT WILL OVER THE NEXT FEW HOURS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SAVANNAH...HILTON HEAD ISLAND...HINESVILLE...POOLER...BLUFFTON...
  BEAUFORT...PORT ROYAL AND RICHMOND HILL.

AUTOMATED GAUGES ACROSS THE WARNED AREA REPORT THAT HOURLY RAINFALL
RATES ARE GENERALLY RUNNING BETWEEN 0.75 INCHES AND 1.25 INCHES PER
HOUR. AS SUCH, ADDITIONAL RAINFALL AMOUNTS OF 4 TO 8 INCHES WILL BE
WIDESPREAD THROUGH THE EARLY MORNING HOURS. THE FLOODING SITUATION
WILL ONLY BECOME MORE DIRE AS WE APPROACH HIGH TIDE AROUND 2 AM.
THIS HIGH TIDE WILL COINCIDE WITH A CONSIDERABLE BUILDING OF STORM
SURGE ASSOCIATED WITH HURRICANE MATTHEW AND FRESH WATER FLOODING
ASSOCIATED WITH ONGOING HEAVY RAIN. THE HIGH TIDE AT FORT PULASK IS
EXPECTED TO PEAK AROUND 12 FEET MEAN LOWER LOW WATER, AND ALL
COASTAL LOCATIONS IN THE FLASH FLOOD WARNING SHOULD BRACE A PERIOD
OF VERY SIGNIFICANT FLOODING EARLY SATURDAY MORNING. 

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 3129 8142 3143 8161 3158 8170 3166 8183
      3213 8133 3224 8119 3223 8114 3229 8112
      3264 8068 3245 8042 3230 8041 3225 8057
      3212 8072 3207 8083 3201 8081 3196 8082
      3171 8110 3162 8110 3140 8123 3130 8122

$$
595 
WGUS72 KCHS 080607
FFSCHS

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

GAC029-051-179-183-191-SCC013-053-080945-
/O.CON.KCHS.FF.W.0008.000000T0000Z-161008T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHATHAM GA-LIBERTY GA-LONG GA-BRYAN GA-MCINTOSH GA-BEAUFORT SC-
JASPER SC-
207 AM EDT SAT OCT 8 2016

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 AM EDT FOR
PORTIONS OF CHATHAM...LIBERTY...LONG...BRYAN...MCINTOSH...BEAUFORT
AND JASPER COUNTIES...

AT 157 AM EDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE WARNED
AREA. 6 TO 10 INCHES OF RAIN HAS FALLEN SO FAR AND ONGOING FLOODING
WILL CONTINUE AS WE ARE AT HIGH TIDE AT FORT PULASKI AND STORM SURGE
ONLY INCREASES AS HURRICANE MATTHEW DRAWS CLOSER TO SHORE.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SAVANNAH...HILTON HEAD ISLAND...HINESVILLE...POOLER...BLUFFTON...
BEAUFORT...PORT ROYAL AND RICHMOND HILL.

AUTOMATED GAUGES SHOW THAT RAINFALL RATES ARE RANGING BETWEEN 1 AND
2 INCHES PER HOUR. ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES WILL
BE POSSIBLE THROUGH 545 AM. THIS IS A VERY DANGEROUS ONGOING
SITUATION AS FORT PULASKI IS CURRENTLY REPORTING A TIDE HEIGHT OF
11.7 FEET ABOVE MEAN LOWER LOW WATER. THIS IS THE 2ND HIGHEST TIDE
ON RECORD, ONLY TRAILING HURRICANE DAVID FROM 1979. MAKING MATTERS
WORSE IS THAT HURRICANE MATTHEW HAS CONTINUED TO TRACK NORTHWARD AND
ITS NORTH AND NORTHWEST EYEWALL IS BEGINNING TO IMPINGE ON THE
CHATHAM COUNTY COAST. STORM SURGE FROM MATTHEW WILL CONTINUE TO
INCREASE EVEN AS WE BEGIN TO MOVE AWAY FROM HIGH TIDE. THE
COMBINATION OF HEAVY RAIN, HIGH TIDE, AND INCREASING SURGE WILL
CONTINUE TO RESULT IN A VERY DANGEROUS SITUATION ALONG THE SOUTHEAST
GEORGIA AND SOUTHEAST SOUTH CAROLINA COAST, ESPECIALLY FOR CHATHAM
AND BEAUFORT COUNTIES. GET TO HIGHER GROUND NOW!

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 3129 8142 3143 8161 3158 8170 3166 8183
      3213 8133 3224 8119 3223 8114 3229 8112
      3264 8068 3245 8042 3230 8041 3225 8057
      3212 8072 3207 8083 3201 8081 3196 8082
      3171 8110 3162 8110 3140 8123 3130 8122

$$
881 
WGUS52 KCHS 080941
FFWCHS
GAC029-051-179-183-191-SCC013-053-081445-
/O.EXT.KCHS.FF.W.0008.000000T0000Z-161008T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
541 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...
  LIBERTY COUNTY IN SOUTHEASTERN GEORGIA...
  LONG COUNTY IN SOUTHEASTERN GEORGIA...
  BRYAN COUNTY IN SOUTHEASTERN GEORGIA...
  MCINTOSH COUNTY IN SOUTHEASTERN GEORGIA...
  BEAUFORT COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
  JASPER COUNTY IN SOUTHEASTERN SOUTH CAROLINA...

* UNTIL 1045 AM EDT

* AT 539 AM EDT...DOPPLER RADAR SHOWS HEAVY RAINS ASSOCIATED WITH
  HURRICANE MATTHEW IMPACTING THE AREA. MUCH OF THE REGION HAS
  ALREADY SEEN RAIN AMOUNTS IN EXCESS OF 10 INCHES. ALTHOUGH RAIN
  AMOUNTS WILL GRADUALLY DIMINISH AS MATTHEW MOVES NORTH OF THE
  AREA...IT WILL TAKE SOME TIME FOR FLOOD WATERS TO SUBSIDE...
  ESPECIALLY AT THE COAST WHERE SEVERE STORM SURGE IS ONGOING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SAVANNAH...HILTON HEAD ISLAND...HINESVILLE...POOLER...BLUFFTON...
  BEAUFORT...PORT ROYAL AND RICHMOND HILL.

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 3129 8142 3143 8161 3158 8170 3166 8183
      3213 8133 3224 8119 3223 8114 3229 8112
      3264 8068 3245 8042 3230 8041 3225 8057
      3212 8072 3207 8083 3201 8081 3196 8082
      3171 8110 3162 8110 3140 8123 3130 8122

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 7, 10:44 AM EDTSpecial Marine WarningCHS46 min
Oct 7, 10:55 AM EDTSpecial Marine WarningCHS35 min
Oct 7, 11:24 AM EDTSpecial Marine WarningCHS2 hr
Oct 7, 2:29 PM EDTTornado WarningCHSBeaufort, Jasper16 min
Oct 7, 3:30 PM EDTSpecial Marine WarningCHS30 min
Oct 7, 3:40 PM EDTTornado WarningCHSBeaufort, Jasper12 min
Oct 7, 4:39 PM EDTSpecial Marine WarningCHS2 hr
Oct 7, 5:12 PM EDTSpecial Marine WarningCHS2 hr
Oct 7, 7:53 PM EDTFlash Flood WarningCHSBerkeley, Charleston, Colleton, Dorchester14 hr
Oct 7, 1:08 PM EDTTornado WarningCHSBryan, Chatham, Liberty37 min

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.