Alert archive / South Carolina / Flash Flood Warnings in 2016

Flash Flood Warning 15, NWS Wilmington, NC

October 8, 2016Horry County, South Carolina

NWS Wilmington, NC issued this flash flood warning at Oct 8, 2016, 12:29 PM EDT for Horry County, South Carolina. It was in force for 3 hr. 2 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, 12:29 PM EDT (16:29 UTC)
Expired
Oct 8, 2016, 3:15 PM EDT
In force
3 hr
Issued by
NWS Wilmington, NC
Area
Storm-based polygon
Emergency
Flash flood emergency
Flood severity
None

County Horry County, SC

The radar

The Wilmington radar (KLTX), 51 km from the middle of the area, began a volume at 16:32 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, 2:07 PM EDTFLASH FLOODConway, SCHIGHWAYS 701 AND 501 NEAR CONWAY CLOSED DUE TO HIGH WATER.
Oct 8, 2:30 PM EDTFLASH FLOOD1 Ne Pine Island, SCNUMEROUS ROADS IN THE CAROLINA FOREST AREA FLOODED. SOME UP TO CHEST DEEP.

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, 4.5 hours before the alert went out and 140 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 2016-10-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 2016-10-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -71 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
7 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
659 m above ground
0-6 km bulk shear
74 kt
0-1 km storm-relative helicity
-71 m²/s²
0-3 km storm-relative helicity
-75 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

300 
WGUS52 KILM 081629
FFWILM
SCC051-081915-
/O.NEW.KILM.FF.W.0015.161008T1629Z-161008T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON NC
1229 PM EDT SAT OCT 8 2016

...FLASH FLOOD EMERGENCY FOR THE GRAND STRAND TO CONWAY AREA
IN SOUTHEASTERN HORRY COUNTY...

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE SOUTHEASTERN HALF OF HORRY COUNTY IN NORTHEASTERN 
  SOUTH CAROLINA...

* UNTIL 315 PM EDT

* AT 1220 PM EDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE
  SOUTHEASTERN HALF OF HORRY COUNTY FROM CONWAY TO THE GRAND STRAND.
  RADAR ESTIMATES THAT SIX TO TEN INCHES OF RAIN HAS FALLEN WITH AN
  ADDITIONAL THREE TO FIVE INCHES POSSIBLE IN THE NEXT FEW HOURS.
  THIS WILL LEAD TO ADDITIONAL FLASH FLOODING.

  COMPLETE ROAD FAILURES ARE POSSIBLE...ALONG WITH SINKHOLES...AND  
  DRIVING WILL BE EXTREMELY DANGEROUS FOR THE NEXT SEVERAL HOURS. DO
 NOT DRIVE ACROSS FLOODED ROADWAYS. SEVERAL STRUCTURES MAY BECOME
  FLOODED AS WELL. 

  THIS IS A FLASH FLOOD EMERGENCY FOR SOUTHEASTERN HORRY COUNTY. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MYRTLE BEACH...CONWAY...NORTH MYRTLE BEACH...SURFSIDE BEACH...
  CHERRY GROVE INLET...RED HILL...SOCASTEE...HAMMOND...LONGS...
  AND LITTLE RIVER.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. THIS IS AN EXTREMELY DANGEROUS AND
LIFE-THREATENING SITUATION. DO NOT ATTEMPT TO TRAVEL UNLESS YOU ARE
FLEEING AN AREA SUBJECT TO FLOODING OR UNDER AN EVACUATION ORDER.

MOST FLOODING DEATHS OCCUR IN VEHICLES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROAD. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. FLOWING WATER CAN BE POWERFUL ENOUGH TO
SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED ROADS MAKE THE
SMART CHOICE: TURN AROUND...DON'T DROWN!

PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE IN WILMINGTON
AT 800 - 697 - 3901 WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 3379 7925 3410 7884 3385 7854 3382 7867
      3377 7877 3370 7888 3357 7900 3357 7904

$$

SHK
2 follow-up statements
049 
WGUS72 KILM 081800
FFSILM

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
200 PM EDT SAT OCT 8 2016

SCC051-081915-
/O.CON.KILM.FF.W.0015.000000T0000Z-161008T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HORRY SC-
200 PM EDT SAT OCT 8 2016

...THIS IS A FLASH FLOOD EMERGENCY FOR SOUTHEASTERN HORRY COUNTY...

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 PM EDT FOR
SOUTHERN HORRY COUNTY...

AT 157 PM EDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE WARNED
AREA. RADAR ESTIMATED 10 TO 14 INCHES OF RAIN HAS FALLEN ACROSS THIS
AREA...AND AN ADDITIONAL 2 TO 4 IS POSSIBLE...ESPECIALLY NORTH OF
MYRTLE BEACH. WIDESPREAD AND SERIOUS FLASH FLOODING IS ONGOING...AND
IS EXPECTED TO GET WORSE THROUGH THIS AFTERNOON.

THIS IS A FLASH FLOOD EMERGENCY FOR SOUTHEASTERN HORRY COUNTY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MYRTLE BEACH...CONWAY...NORTH MYRTLE BEACH...SURFSIDE BEACH...
  CHERRY GROVE INLET...RED HILL...SOCASTEE...HAMMOND...LONGS...
  AND LITTLE RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. THIS IS AN EXTREMELY DANGEROUS AND
LIFE-THREATENING SITUATION. DO NOT ATTEMPT TO TRAVEL UNLESS YOU ARE
FLEEING AN AREA SUBJECT TO FLOODING OR UNDER AN EVACUATION ORDER.
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

MOST FLOODING DEATHS OCCUR IN VEHICLES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROAD. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. FLOWING WATER CAN BE POWERFUL ENOUGH TO
SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED ROADS MAKE THE
SMART CHOICE: TURN AROUND...DON'T DROWN!

PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE IN WILMINGTON
AT 800 - 697 - 3901 WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 3379 7925 3410 7884 3385 7854 3382 7867
      3377 7877 3370 7888 3357 7900 3357 7904

$$

JDW
895 
WGUS72 KILM 081909
FFSILM

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
309 PM EDT SAT OCT 8 2016

SCC051-081918-
/O.EXP.KILM.FF.W.0015.000000T0000Z-161008T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HORRY SC-
309 PM EDT SAT OCT 8 2016

...THE FLASH FLOOD WARNING FOR SOUTHERN HORRY COUNTY WILL EXPIRE AT
315 PM EDT...

THE HEAVIEST RAIN HAS EASED...BUT MODERATE TO AT TIMES HEAVY
RAINFALL WILL CONTINUE. ALTHOUGH THE FLASH FLOOD EMERGENCY IS NO
LONGER IN EFFECT...A FLASH FLOOD WARNING CONTINUES FOR HORRY COUNTY.

LAT...LON 3379 7925 3410 7884 3385 7854 3382 7867
      3377 7877 3370 7888 3357 7900 3357 7904

$$

JDW

The office that day

Everything else NWS Wilmington, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 7, 10:26 PM EDTTornado WarningILMGeorgetown16 min
Oct 8, 12:29 AM EDTTornado WarningILMGeorgetown, Williamsburg31 min
Oct 8, 12:57 AM EDTAreal Flood AdvisoryILMGeorgetown, Williamsburg4 hr
Oct 8, 1:21 AM EDTTornado WarningILMHorry, Marion24 min
Oct 8, 1:47 AM EDTTornado WarningILMFlorence, Marion28 min
Oct 8, 2:04 AM EDTTornado WarningILMFlorence, Georgetown, Horry, Marion, Williamsburg26 min
Oct 8, 3:33 AM EDTTornado WarningILMHorry, Marion27 min
Oct 8, 4:42 AM EDTRip Current StatementILMGeorgetown, Horry12 hr
Oct 8, 5:13 AM EDTFlash Flood WarningILMDillon, Florence, Georgetown, Horry, Marion, Williamsburg8 hr
Oct 8, 10:19 AM EDTFlash Flood WarningILMDarlington, Dillon, Florence, Georgetown, Horry, Marion and 2 more6 hr
Oct 8, 4:02 PM EDTFlash Flood WarningILMDillon, Horry, Marion, Marlboro4 hr
Oct 8, 4:07 PM EDTAreal Flood AdvisoryILMDarlington, Florence, Georgetown, Williamsburg4 hr
Oct 8, 5:10 PM EDTRip Current StatementILMGeorgetown, Horry27 hr

Nearby

Flash 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.