Alert archive / South Carolina / Special Weather Statements in 2018

Special Weather Statement, NWS Wilmington, NC

June 25, 2018Marion County, South Carolina

NWS Wilmington, NC issued this special weather statement at Jun 25, 2018, 5:24 PM EDT for Marion County, South Carolina. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 25, 2018, 5:24 PM EDT (21:24 UTC)
Expired: Jun 25, 2018, 6:15 PM EDT
In force: 51 min
Issued by: NWS Wilmington, NC

County Marion County, SC

The radar

The Wilmington radar (KLTX), 92 km from the middle of the area, began a volume at 21:25 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 12:00Z, 9.4 hours before the alert went out and 141 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 119 J/kg
Mixed-layer CIN: -242 J/kg
Mixed-layer LCL: 1541 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 25, 4:05 PM EDT, 1 hour 19 minutes earlier.

Area forecast discussion, Jun 25, 4:05 PM EDT, 1 hour 19 minutes before

Area Forecast Discussion
National Weather Service Wilmington NC
Issued by National Weather Service Charleston SC
405 PM EDT Mon Jun 25 2018

.SYNOPSIS...
A weak front will remain stalled over the area through Tuesday
before Atlantic high pressure rebuilds. Another front may drop
into the area Friday before dissipating.

&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
A Severe Thunderstorm Watch is in effect for the entire area
until 10 PM tonight.

A cold front is currently moving south into the area. Based on
surface observations, it appears the location of the front as
of 4 PM is near the NC/SC border. Convection is currently being
driven in two different locations. The first is for the coastal
counties, due to the sea breeze moving inland. The second is
further inland, which is due to a mid-level impulse approaching
from the west. The expectation is for convection to increase for
both areas, with the inland convection becoming more dominant
as we head into the evening. There is plenty of instability in
place, especially with temperatures well into the 90s and dew
points in the lower 70s. SPC Mesoscale Analysis currently shows
MLCAPEs ~2,500 J/kg across the southernmost tier of the CWA.
MLCAPEs are forecasted to increase over the next few hours with
a band ~3,000 J/kg across the southernmost tier of the CWA and
along the coast. Low level lapse rates are steep, up to 8 C/km.
PWATs are also around 2". All of these and more will help
increase the convective potential over the upcoming hours. The
main threat will be damaging winds. But small hail will also be
possible. Heavy rain should also be expected in these storms.
Though, they appear to be moving at a decent rate, which will
help to limit the flooding potential. However, any training or
backbuilding of storms over the same locations would cause
issues. The POPs generally reflect the timing of multiple CAMs
and radar trends. The worst conditions are expected in the
evening, then improving as the bulk of activity moves offshore.
Though, remnant showers should persist well into the night,
especially for the coastal counties. Overnight lows will
generally range from 70-75 degrees.

&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH THURSDAY/...
A relatively active pattern is likely to persist into Tuesday as
a weak front remains stalled over eastern NC while a series of
upper shortwaves move through the area. Somewhat drier, more
stable air will shift in from the north as surface high pressure
builds down the Eastern Seaboard. Better instability will exist
across the SC Pee Dee region which will be south of the front.
We show 40-50% PoPs Tuesday into Tuesday evening, diminishing
Tuesday night as the greatest upper vorticity energy moves
southeast of the area. A marginal severe threat will exist
mainly along the NC/SC border and the Pee Dee region where the
best instability will exist. High temps will be noticeably
cooler given the weak cold air advection. Temps will top out in
the upper 80s with heat indices in the mid to upper 90s.

Temperatures will gradually warm Wednesday through Thursday as
the upper ridge builds toward the eastern United States. Mainly
diurnal convection is expected each day with the sea breeze the
main driver, though weak shortwave energy could also drive some
convection. Heat indices may be back above Heat Advisory
criteria again on Thursday.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
A large upper ridge will build over the area Thursday night
through Sunday before shifting east of the area early next week.
Hot and muggy conditions are expected through Sunday, with the
potential for Heat Advisories. Mainly diurnal convection is
anticipated each day. Slightly cooler temps will occur Monday
into Tuesday as stronger onshore flow develops.

&&

.AVIATION /19Z MONDAY THROUGH SATURDAY/...
As of 18Z...Radar shows two areas of convection developing this
afternoon, one along the sea breeze and another far inland. The
threat for thunderstorm impacts to the airports will increase
this evening and tonight as a mid-level disturbance combines
with a southward moving cold front. TEMPO IFR within severe
convection is possible. The bulk of the convection is expected
to shift offshore late this evening and overnight, allowing for
improving conditions. Winds are likely to shift to northwest or
even north late in the period.

Extended Outlook...Scattered showers and tstms will affect all
terminals Tuesday into Tuesday night. Brief period of MVFR
ceilings possible at NC terminals Tue night. Otherwise mainly
VFR outside brief restrictions in scattered showers/tstms.

&&

.MARINE...
NEAR TERM /THROUGH TONIGHT/...
A cold front will move south into the area, then stall over the
coastal waters. North of the front, expect light winds,
generally from the north. South of the front, expect light
winds, generally from the south. Seas will range from 2-3 ft.

SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/...
Brief period of E to NE flow over the NC waters Tuesday into
Tuesday night before Atlantic high pressure rebuilds and flow
becomes southerly.

LONG TERM /THURSDAY THROUGH FRIDAY/...
SW flow Thursday into Thursday night, becoming variable Friday
as a weak front drops into the waters.

&&

.ILM WATCHES/WARNINGS/ADVISORIES...
SC...None.
NC...None.
MARINE...None.

&&

SYNOPSIS...99
NEAR TERM...99
SHORT TERM...99
LONG TERM...99
AVIATION...99
MARINE...99

Hazardous weather outlook, Jun 25, 1:13 PM EDT, 4 hours 11 minutes before

Hazardous Weather Outlook
National Weather Service Wilmington NC
Issued by National Weather Service Charleston SC
113 PM EDT Mon Jun 25 2018

NCZ087-096-099-105>110-SCZ017-023-024-032-033-039-054>056-058-059-
261715-
Robeson-Bladen-Columbus-Inland Pender-Coastal Pender-
Inland New Hanover-Coastal New Hanover-Inland Brunswick-
Coastal Brunswick-Marlboro-Darlington-Dillon-Florence-Marion-
Williamsburg-Coastal Horry-Inland Georgetown-Coastal Georgetown-
Central Horry-Northern Horry-
113 PM EDT Mon Jun 25 2018

...SEVERE THUNDERSTORM WATCH 218 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for southeast North Carolina and
northeast South Carolina.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There is marginal risk for excessive rainfall and localized flash
flooding potential on Tuesday.

Heat index values could reach 100 to 105 degrees Thursday through
Saturday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
 conditions according to Standard Operating Procedures.

AMZ250-252-254-256-261715-
Coastal waters from Surf City to Cape Fear NC out 20 nm-
Coastal waters from Cape Fear NC to Little River Inlet SC out 20 nm-
Coastal waters from Little River Inlet to Murrells Inlet SC out
20 nm-
Coastal waters from Murrells Inlet to South Santee River SC out
20 nm-
113 PM EDT Mon Jun 25 2018

...SEVERE THUNDERSTORM WATCH 218 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for the adjacent Coastal Waters.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
 conditions according to Standard Operating Procedures.

In the hours before

Local storm report, Jun 25, 4:21 PM EDT, 1 hour 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
ISSUED BY NATIONAL WEATHER SERVICE CHARLESTON SC
421 PM EDT MON JUN 25 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0404 PM     TSTM WND DMG     2 WNW CLIO              34.59N  79.58W
06/25/2018                   MARLBORO           SC   LAW ENFORCEMENT

            TREE REPORTED DOWN ALONG SC HIGHWAY 9 AT CLIO COUNTRY
            CLUB.

&&

EVENT NUMBER ILM1800001

Special weather statement, Jun 25, 4:47 PM EDT, 37 minutes before

Special Weather Statement
National Weather Service Wilmington NC
Issued by National Weather Service Charleston SC
447 PM EDT MON JUN 25 2018

SCZ032-252115-
Florence-
447 PM EDT MON JUN 25 2018

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF NORTHWESTERN FLORENCE
COUNTY...

At 447 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorm near Mars Bluff, or near Florence, moving east at
10 mph.

  HAZARD...strong winds 45 to 55 mph and up to penny sized hail.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light, unsecured objects. Minor hail damage to plants,
           trees and crops is possible. Damage to windshields is
           unlikely.

Some locations in the path of this storm include...
Florence, Quinby, Claussen and Mars Bluff.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Excessive cloud to ground lightning is occurring with this storm.
Lightning can strike 15 miles away from a thunderstorm. Seek safe
shelter inside a building or vehicle.

This storm may intensify. Be certain to monitor local radio and TV
stations as well as local cable TV outlets for additional information
and possible warnings from the National Weather Service.

A severe thunderstorm watch is in effect. Thunderstorms can produce
large hail, damaging winds and isolated tornadoes suddenly, sometimes
with little or no warning. Be alert for rapidly changing weather
conditions and be ready to act quickly if severe weather is observed
or a warning is issued.

&&

LAT...LON 3417 7993 3425 7979 3425 7975 3429 7973
      3429 7967 3430 7962 3429 7960 3419 7957
      3418 7957 3417 7956 3411 7954 3406 7985
TIME...MOT...LOC 2047Z 267DEG 9KT 3418 7970

NED

Local storm report, Jun 25, 4:56 PM EDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
ISSUED BY NATIONAL WEATHER SERVICE CHARLESTON SC
456 PM EDT MON JUN 25 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0445 PM     TSTM WND GST     3 SSE QUINBY            34.19N  79.72W
06/25/2018  M56 MPH          FLORENCE           SC   ASOS

            KFLO ASOS REPORTED PEAK GUST OF 49 KTS.

&&

EVENT NUMBER ILM1800002

JRL

Special weather statement, Jun 25, 5:02 PM EDT, 22 minutes before

Special Weather Statement
National Weather Service Wilmington NC
502 PM EDT MON JUN 25 2018

SCZ054>056-058-252145-
Coastal Georgetown SC-Coastal Horry SC-Inland Georgetown SC-
Central Horry SC-
502 PM EDT MON JUN 25 2018

...SPECIAL WEATHER STATEMENT FOR NORTHEASTERN GEORGETOWN AND
SOUTHWESTERN HORRY COUNTIES UNTIL 545 PM EDT...

At 501 PM EDT, Doppler radar was tracking a strong thunderstorm near
Dongola, or 10 miles west of Socastee, moving south at 10 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Murrells Inlet, Plantersville, Burgess, Yauhannah, Bucksport and
Waccamaw Community Hospital.

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 storm passes.

&&

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
northeastern South Carolina.

LAT...LON 3354 7938 3371 7927 3371 7924 3370 7925
      3369 7923 3371 7919 3373 7919 3375 7922
      3377 7911 3353 7903
TIME...MOT...LOC 2101Z 006DEG 9KT 3370 7918

JDW

Special weather statement, Jun 25, 5:06 PM EDT, 18 minutes before

Special Weather Statement
National Weather Service Wilmington NC
506 PM EDT MON JUN 25 2018

SCZ054-055-058-252145-
Coastal Horry SC-Inland Georgetown SC-Central Horry SC-
506 PM EDT MON JUN 25 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN GEORGETOWN AND
SOUTHERN HORRY COUNTIES UNTIL 545 PM EDT...

At 506 PM EDT, Doppler radar was tracking a strong thunderstorm over
Yauhannah, or 11 miles northwest of Murrells Inlet, moving southeast
at 15 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Dongola, Plantersville, Burgess, Yauhannah and Bucksport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
northeastern South Carolina.

LAT...LON 3370 7934 3372 7929 3372 7927 3370 7927
      3371 7924 3369 7925 3370 7920 3372 7919
      3375 7922 3379 7913 3361 7900 3357 7909
      3358 7910 3361 7910 3360 7911 3361 7912
      3354 7918 3352 7921
TIME...MOT...LOC 2106Z 328DEG 13KT 3367 7920

TRA

Special weather statement, Jun 25, 5:24 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Wilmington NC
524 PM EDT MON JUN 25 2018

SCZ024-033-059-252215-
Marion SC-Northern Horry SC-Dillon SC-
524 PM EDT MON JUN 25 2018

...SPECIAL WEATHER STATEMENT FOR SOUTHWESTERN DILLON...NORTHWESTERN
HORRY AND MARION COUNTIES UNTIL 615 PM EDT...

At 523 PM EDT, Doppler radar was tracking a cluster of strong
thunderstorms near Marion, moving southeast at 20 mph.

Half inch hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Marion, Mullins, Sellers, Galivants Ferry, Fork, Blue Brick, Zion,
Gapway, Brittons Neck, Rains, Gresham, Smithboro, Green Sea, Aynor,
Nichols and Carolinas Hospital System - Marion.

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 storm passes.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional
information and possible warnings from the National Weather Service.

&&

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
northeastern South Carolina.

LAT...LON 3430 7919 3411 7893 3396 7924 3396 7933
      3392 7931 3388 7940 3389 7940 3390 7943
      3395 7949 3397 7948 3399 7952 3404 7951
      3407 7954 3410 7952 3413 7952 3413 7953
      3418 7957 3423 7954 3427 7957 3430 7962
TIME...MOT...LOC 2123Z 315DEG 16KT 3413 7941

JDW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 8:20 PM EDT	Special Weather Statement	ILM	Columbus	55 min
Jun 24, 8:34 PM EDT	Severe Thunderstorm Warning	ILM	Bladen, Brunswick, Columbus	41 min
Jun 24, 8:43 PM EDT	Severe Thunderstorm Warning	ILM	Columbus	47 min
Jun 24, 9:11 PM EDT	Special Weather Statement	ILM	Bladen	64 min
Jun 24, 9:16 PM EDT	Severe Thunderstorm Warning	ILM	Columbus	59 min
Jun 24, 9:27 PM EDT	Special Weather Statement	ILM	Pender	48 min
Jun 24, 9:33 PM EDT	Severe Thunderstorm Warning	ILM	Columbus	57 min
Jun 24, 9:57 PM EDT	Severe Thunderstorm Warning	ILM	Bladen, Columbus, Pender	63 min
Jun 24, 10:26 PM EDT	Special Weather Statement	ILM	Brunswick, New Hanover, Pender	64 min
Jun 24, 10:50 PM EDT	Severe Thunderstorm Warning	ILM	Pender	33 min
Jun 24, 11:17 PM EDT	Special Weather Statement	ILM	Pender	28 min
Jun 24, 11:23 PM EDT	Special Weather Statement	ILM	New Hanover	37 min
Jun 24, 11:31 PM EDT	Special Marine Warning	ILM		29 min
Jun 24, 11:54 PM EDT	Special Weather Statement	ILM	New Hanover	51 min
Jun 25, 12:29 AM EDT	Special Marine Warning	ILM		61 min
Jun 25, 1:22 AM EDT	Special Marine Warning	ILM		23 min
Jun 25, 3:41 PM EDT	Special Weather Statement	ILM	Robeson	34 min
Jun 25, 5:15 PM EDT	Severe Thunderstorm Warning	ILM	Robeson	60 min
Jun 25, 5:27 PM EDT	Special Weather Statement	ILM	Brunswick	63 min
Jun 25, 6:13 PM EDT	Severe Thunderstorm Warning	ILM	Bladen, Columbus	62 min
Jun 25, 6:18 PM EDT	Special Weather Statement	ILM	Robeson	57 min
Jun 25, 6:38 PM EDT	Severe Thunderstorm Warning	ILM	Brunswick, Columbus	67 min
Jun 25, 7:05 PM EDT	Special Weather Statement	ILM	New Hanover	25 min
Jun 25, 7:23 PM EDT	Severe Thunderstorm Warning	ILM	Brunswick, New Hanover, Pender	52 min
Jun 25, 7:48 PM EDT	Special Weather Statement	ILM	Brunswick	57 min
Jun 24, 9:31 PM EDT	Severe Thunderstorm Warning	ILM	Williamsburg	71 min
Jun 24, 10:04 PM EDT	Special Weather Statement	ILM	Horry	56 min
Jun 25, 3:57 PM EDT	Special Weather Statement	ILM	Darlington	33 min
Jun 25, 4:02 PM EDT	Severe Thunderstorm Warning	ILM	Darlington, Marlboro	58 min
Jun 25, 4:47 PM EDT	Special Weather Statement	ILM	Florence	28 min
Jun 25, 4:54 PM EDT	Severe Thunderstorm Warning	ILM	Florence	37 min
Jun 25, 5:02 PM EDT	Special Weather Statement	ILM	Georgetown	43 min
Jun 25, 5:06 PM EDT	Special Weather Statement	ILM	Georgetown	39 min
Jun 25, 5:09 PM EDT	Severe Thunderstorm Warning	ILM	Georgetown, Horry	66 min
Jun 25, 5:38 PM EDT	Severe Thunderstorm Warning	ILM	Horry, Marion	54 min
Jun 25, 5:39 PM EDT	Special Weather Statement	ILM	Darlington	51 min
Jun 25, 5:52 PM EDT	Special Weather Statement	ILM	Georgetown	38 min
Jun 25, 6:02 PM EDT	Special Weather Statement	ILM	Williamsburg	58 min
Jun 25, 6:07 PM EDT	Severe Thunderstorm Warning	ILM	Georgetown	38 min
Jun 25, 6:10 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Marion, Williamsburg	65 min
Jun 25, 6:43 PM EDT	Areal Flood Advisory	ILM	Georgetown	2 hr
Jun 25, 6:47 PM EDT	Special Weather Statement	ILM	Horry	28 min
Jun 25, 7:15 PM EDT	Special Weather Statement	ILM	Marlboro	45 min
Jun 25, 7:16 PM EDT	Special Weather Statement	ILM	Williamsburg	44 min

Nearby

Special Weather Statements in South Carolina, 2018 Every special weather statement in 2018

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.