Alert archive / South Carolina / Flash Flood Warnings in 2016

Flash Flood Warning 17, NWS Wilmington, NC

October 8, 20164 counties in South Carolina

NWS Wilmington, NC issued this flash flood warning at Oct 8, 2016, 4:02 PM EDT for 4 counties in South Carolina. It was in force for 4 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, 4:02 PM EDT (20:02 UTC)
Expired
Oct 8, 2016, 8:00 PM EDT
In force
4 hr
Issued by
NWS Wilmington, NC
Area
Storm-based polygon
Flood severity
None

Counties Dillon County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC

The radar

The Wilmington radar (KLTX), 97 km from the middle of the area, began a volume at 20:05 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, 4:07 PM EDTHEAVY RAIN 14.36Marion, SCRECORDED AT RAWS SITE MRWS1.
Oct 8, 5:21 PM EDTFLASH FLOOD2 Se Enterprise Landing, SCREPORT OF FLOODING ON BOYNE DRIVE IN THE CAMERON VILLAGE COMMUNITY.
Oct 8, 7:30 PM EDTFLASH FLOODMyrtle Beach, SCNUMEROUS ROAD IMPASSABLE AND BARRICADED ACROSS HORRY COUNTY.

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, 8.0 hours before the alert went out and 152 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.

532 
WGUS52 KILM 082002
FFWILM
SCC033-051-067-069-090000-
/O.NEW.KILM.FF.W.0017.161008T2002Z-161009T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MARLBORO COUNTY IN NORTHEASTERN SOUTH CAROLINA...
  HORRY COUNTY IN NORTHEASTERN SOUTH CAROLINA...
  MARION COUNTY IN NORTHEASTERN SOUTH CAROLINA...
  DILLON COUNTY IN NORTHEASTERN SOUTH CAROLINA...

* UNTIL 800 PM EDT

* AT 358 PM EDT...DOPPLER RADAR INDICATED HEAVY RAIN PERSISTING
  ACROSS THE WARNED AREA. WIDESPREAD RAINFALL OF 8 TO 12 INCHES HAS
  FALLEN TODAY...AND WHILE RAINFALL IS BEGINNING TO WANE...AN
  ADDITIONAL 1 TO 3 INCHES IS POSSIBLE. WIDESPREAD ROADWAY FLOODING
  IS OCCURRING...WITH MANY ROADS WASHED OUT OR IMPASSABLE.
  RECENTLY...HORRY COUNTY STATED THAT ROADS WERE TOO DANGEROUS EVEN
  FOR FIRST RESPONDERS...SO YOU SHOULD NOT BE DRIVING AT ALL TONIGHT
  ACROSS NORTHEAST SOUTH CAROLINA.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MYRTLE BEACH...CONWAY...NORTH MYRTLE BEACH...BENNETTSVILLE...
  MARION...DILLON...MULLINS...SURFSIDE BEACH...RED HILL...SOCASTEE...
  GARDEN CITY...HORRY...LORIS AND MCCOLL.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 95 IN SOUTH CAROLINA BETWEEN MILE MARKERS 175 AND 198.
 SC HIGHWAY 31 BETWEEN MILE MARKERS 5 AND 24.
 SC HIGHWAY 22 BETWEEN MILE MARKERS 1 AND 26.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. THE WATER DEPTH WILL BE HARD TO DETERMINE...AND
WASHED OUT OR DAMAGED ROADS MAY BE DIFFICULT TO IDENTIFY. AVOID
FLOODED AREAS OR ROADS THAT HAVE BEEN CLOSED. KEEP A SAFE DISTANCE
FROM THE BANKS OF SWIFTLY MOVING STREAMS...CREEKS...AND DITCHES.

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

&&

LAT...LON 3481 7968 3385 7855 3377 7877 3357 7900
      3357 7910 3365 7912 3371 7920 3371 7927
      3383 7932 3394 7948 3426 7956 3431 7966
      3440 7968 3441 7972 3449 7972 3452 7976
      3450 7977 3451 7983 3461 7978 3480 7993

$$

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, 12:29 PM EDTFlash Flood Warning EmergencyILMHorry3 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.