Alert archive / South Carolina / Areal Flood Warnings in 2016
Areal Flood Warning 4, NWS Wilmington, NC
NWS Wilmington, NC issued this areal flood warning at Jul 11, 2016, 10:10 PM EDT for Horry County, South Carolina. It was in force for 95 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 11, 2016, 10:10 PM EDT (02:10 UTC)
- Expired
- Jul 11, 2016, 11:45 PM EDT
- In force
- 95 min
- Issued by
- NWS Wilmington, NC
- Area
- Storm-based polygon
- 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 02:14 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.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 00:00Z, 2.2 hours before the alert went out and 147 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.
- Mixed-layer CAPE
- 2302 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1271 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Wilmington, NC wrote its last area forecast discussion before this areal flood warning went out at Jul 11, 6:42 PM EDT, 3 hours 28 minutes earlier.
Area forecast discussion, Jul 11, 6:42 PM EDT, 3 hours 28 minutes before
Area Forecast Discussion National Weather Service Wilmington NC 642 PM EDT MON JUL 11 2016 .SYNOPSIS... A weakening front and area of low pressure across the region will bring a good chance of showers and storms over the next couple of days. A building ridge of high pressure will bring above normal temperatures and less coverage of storms mid week. More typical summer time weather can be expected into the weekend with scattered showers and storms each day as the Bermuda High and Piedmont trough dominate the weather. && .NEAR TERM /UNTIL 6 AM TUESDAY MORNING/... As of 600 PM Monday...First batch of thunderstorms moved across the northern portions of the forecast area and produced some very spotty wind damage. These thunderstorms were weakening across the Cape Fear River basin early this eve. Another strong thunderstorm developed along convective outflow boundary in Horry County and will move toward the grand Strand through 8 pm. Another cluster of thunderstorms was poised to move into Marlboro and Darlington counties. These storms may produce isolated wind damage over the next few hours. The convection should wane through late eve. However, expect showers and thunderstorms to redevelop along the land breeze, especially across the Cape Fear area toward morning. Overnight lows will be mainly in the mid 70s. && .SHORT TERM /6 AM TUESDAY MORNING THROUGH WEDNESDAY NIGHT/... As of 300 PM Monday...The western extension of the Bermuda high will keep up a warm and moist southwesterly flow over the eastern Carolinas through the period. A moderately unstable column will lead to primarily diurnal convection with the good chance for thunderstorms on both days. Temperatures will be seasonal on Tuesday and just above climo on Wednesday. However, temperatures near the coast may not make it out of the 80s. && .LONG TERM /THURSDAY THROUGH MONDAY/... As of 300 PM Monday...Weak 5h ridge over the southeast Thu will break down ahead of shortwave emerging from the plains. As the flow aloft transitions to weak troughing Fri into Sat diurnal convection due to the sea breeze and the Piedmont trough will increase in coverage. Bermuda High will maintain low level southwest flow as well as an abundance of moisture. Southwest flow aloft will result in deep moisture over the southeast with precipitable water values above 2 inches through the period. While showers and thunderstorms will develop each day the best chances will be during the weekend and the start of next week. Temperatures a little above climo Thu and Fri will be closer to climo during the day Sat through Mon with overnight temps continuing to run a little above climo.&& && .AVIATION /00Z TUESDAY THROUGH SATURDAY/... As of 00Z...Convection winding down in North Carolina, however storms are expected to continue in South Carolina for at least the next 3-4 hours, possible reaching the coast around 06Z. Given the airmass, could not rule out another round of convection after 06Z, but uncertain as to location and coverage. Light southwest flow will continue with convective debris expected over much of the region. EXTENDED OUTLOOK...Localized MVFR in ISOLD/SCT thunderstorms each day between 17Z-01Z, otherwise expect VFR. && .MARINE... NEAR TERM /THROUGH TONIGHT/... As of 600 PM Monday...Bermuda high pressure will be in place across the waters. Winds will be SW 10 to 15 kt this eve, then veer to more westerly and decrease slightly as a landbreeze develops. Seas will be 2 to 3 ft. Isolated to scattered thunderstorms will impact the waters, with clusters of numerous storms possible. Some of the thunderstorms will likely be strong. SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/... As of 300 PM Monday...High pressure over the western Atlantic will keep winds from the SW at 10 to 15 kts through the period, with seas of 2 or 3 ft. No advisories are expected during the short term. However, there will be a chance for thunderstorms each day, particularly in the afternoon and evening. LONG TERM /THURSDAY THROUGH Saturday/... As of 300 PM Monday...Bermuda High and Piedmont trough combo will maintain southwest flow through the period. Trough will be more defined during the period which will keep speeds on the high end of the 10 to 15 kt range. Increased southwest flow will keep seas in the 3 to 4 ft range each day. && .ILM WATCHES/WARNINGS/ADVISORIES... SC...None. NC...None. MARINE...None. && NEAR TERM...RJD SHORT TERM...REK LONG TERM...III AVIATION...RGZ
Hazardous weather outlook, Jul 11, 9:51 PM EDT, 19 minutes before
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Special weather statement, Jul 11, 8:42 PM EDT, 1 hour 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON NC 842 PM EDT MON JUL 11 2016 NCZ099-109-110-SCZ053-054-120115- COASTAL BRUNSWICK NC-COLUMBUS NC-INLAND BRUNSWICK NC- COASTAL HORRY SC-INLAND HORRY SC- 842 PM EDT MON JUL 11 2016 ...SPECIAL WEATHER STATEMENT FOR CENTRAL COLUMBUS...SOUTHERN BRUNSWICK AND CENTRAL HORRY COUNTIES UNTIL 915 PM EDT... AT 842 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER DULAH...OR 15 MILES NORTH OF LITTLE RIVER...MOVING EAST AT 45 MPH. WIND GUSTS OF UP 50 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... NORTH MYRTLE BEACH...WHITEVILLE...SHALLOTTE...SUNSET BEACH... NORTH MYRTLE BEACH AIRPORT...LITTLE RIVER...IREDELL... CAROLINA SHORES...TABOR CITY...LORIS...CHADBOURN...CALABASH... BETHEL...LAKE WACCAMAW...ALLSBROOK...WILLIAMS...HALLSBORO...MOLLIE... CLARENDON AND RUSSTOWN. THIS INCLUDES THE FOLLOWING HIGHWAYS... US ROUTE 74 BETWEEN MILE MARKERS 386 AND 398. US ROUTE 17 IN BRUNSWICK COUNTY BETWEEN MILE MARKERS 1 AND 16...AND BETWEEN MILE MARKERS 35 AND 38. SC HIGHWAY 31 BETWEEN MILE MARKERS 18 AND 24. SC HIGHWAY 22 BETWEEN MILE MARKERS 17 AND 23. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO MINOR FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 3414 7920 3438 7874 3416 7803 3379 7874 TIME...MOT...LOC 0042Z 289DEG 38KT 3409 7872 III
Special weather statement, Jul 11, 8:47 PM EDT, 1 hour 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
847 PM EDT MON JUL 11 2016
SCZ032-033-039-053>056-120145-
MARION SC-COASTAL GEORGETOWN SC-FLORENCE SC-WILLIAMSBURG SC-
INLAND GEORGETOWN SC-COASTAL HORRY SC-INLAND HORRY SC-
847 PM EDT MON JUL 11 2016
...SPECIAL WEATHER STATEMENT FOR SOUTHEASTERN FLORENCE...NORTHERN
GEORGETOWN...SOUTHWESTERN HORRY...CENTRAL MARION AND CENTRAL
WILLIAMSBURG COUNTIES UNTIL 945 PM EDT...
AT 846 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
HYMAN...OR 9 MILES NORTHEAST OF LAKE CITY...MOVING SOUTHEAST AT 35
MPH.
PEA SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.
LOCATIONS IMPACTED INCLUDE...
CONWAY...GEORGETOWN...LAKE CITY...KINGSTREE...RED HILL...SOCASTEE...
MURRELLS INLET...HORRY...JACKSON...JOHNSONVILLE...PAMPLICO...
HEMINGWAY...HICKORY GROVE...KINGSBURG...WARSAW...HENRY...
GALIVANTS FERRY...BRITTONS NECK...HANNAH AND ADRIAN.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
SC HIGHWAY 31 BETWEEN MILE MARKERS 5 AND 6.
SC HIGHWAY 22 BETWEEN MILE MARKERS 1 AND 10.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THUNDERSTORMS CAN POSE A VARIETY OF THREATS INCLUDING GUSTY WINDS...
SMALL HAIL...CLOUD TO GROUND LIGHTNING...AND LOCALIZED FLOODING. IT
IS RECOMMENDED THAT YOU REMAIN INDOORS UNTIL THE STORMS PASS.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO MINOR FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
&&
LAT...LON 3367 7996 3413 7965 3411 7918 3382 7885
3335 7927
TIME...MOT...LOC 0046Z 293DEG 30KT 3395 7962
SHKLocal storm report, Jul 11, 9:17 PM EDT, 53 minutes before
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</html>Local storm report, Jul 11, 9:44 PM EDT, 26 minutes before
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</html>The office that day
Everything else NWS Wilmington, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 8:14 PM EDT | Areal Flood Advisory | ILM | Columbus, Robeson | 61 min |
| Jul 11, 8:15 PM EDT | Severe Thunderstorm Warning | ILM | Brunswick, Columbus | 25 min |
| Jul 11, 8:42 PM EDT | Special Weather Statement | ILM | Columbus | 33 min |
| Jul 11, 10:06 PM EDT | Special Marine Warning | ILM | 54 min | |
| Jul 11, 10:31 PM EDT | Special Marine Warning | ILM | 89 min | |
| Jul 12, 12:41 PM EDT | Special Marine Warning | ILM | 64 min | |
| Jul 12, 12:51 PM EDT | Special Weather Statement | ILM | Pender | 39 min |
| Jul 12, 2:52 PM EDT | Special Weather Statement | ILM | Brunswick | 38 min |
| Jul 12, 2:58 PM EDT | Special Weather Statement | ILM | New Hanover | 62 min |
| Jul 12, 3:11 PM EDT | Heat Advisory | ILM | Bladen, Brunswick, Columbus, New Hanover, Pender, Robeson | 28 hr |
| Jul 12, 3:14 PM EDT | Severe Thunderstorm Warning | ILM | Brunswick, New Hanover | 46 min |
| Jul 12, 3:38 PM EDT | Special Weather Statement | ILM | Brunswick | 52 min |
| Jul 12, 3:48 PM EDT | Severe Thunderstorm Warning | ILM | Brunswick | 28 min |
| Jul 12, 3:54 PM EDT | Special Marine Warning | ILM | 96 min | |
| Jul 11, 8:47 PM EDT | Special Weather Statement | ILM | Florence, Georgetown, Horry, Marion, Williamsburg | 58 min |
| Jul 11, 8:51 PM EDT | Severe Thunderstorm Warning | ILM | Florence, Horry, Marion, Williamsburg | 54 min |
| Jul 11, 9:25 PM EDT | Special Weather Statement | ILM | Horry | 50 min |
Nearby
Areal Flood Warnings in South Carolina, 2016Every areal 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.