Alert archive / South Carolina / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 9, NWS Wilmington, NC

April 15, 20186 counties in South Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at Apr 15, 2018, 7:52 PM EDT for 6 counties in South Carolina. It was in force for 53 min. 4 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
Apr 15, 2018, 7:52 PM EDT (23:52 UTC)
Expired
Apr 15, 2018, 8:45 PM EDT
In force
53 min
Issued by
NWS Wilmington, NC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Dillon County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Marion County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 98 km from the middle of the area, began a volume at 23:55 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
Apr 15, 7:57 PM EDTTSTM WND DMG5 Nw Oatland, SCTREE DOWN ON BROWNS FERRY RD 1 MILE WEST OF BROWNS FERRY BRIDGE
Apr 15, 8:03 PM EDTTSTM WND DMG2 E Gresham, SCTREE DOWN ON SC HIGHWAY 41
Apr 15, 8:03 PM EDTTSTM WND DMG5 N Pamplico, SCTREE DOWN ON THE FLORENCE SIDE OF WILLOW GROVE RD
Apr 15, 8:30 PM EDTTSTM WND DMGNichols, SCTREE DOWN NEAR SUNNY MART ON SC 9

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 4 storm reports to this severe thunderstorm warning; the first came 5 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 15, 3:02 PM EDTTornado WatchSPC8 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 11.9 hours before the alert went out and 134 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 2018-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 844 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2018-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 148 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
844 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
587 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
148 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.5

Open this sounding in Storm Lab

The text

As transmitted.

957 
WUUS52 KILM 152352
SVRILM
SCC033-041-043-051-067-089-160045-
/O.NEW.KILM.SV.W.0009.180415T2352Z-180416T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington NC
752 PM EDT SUN APR 15 2018

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Eastern Florence County in northeastern South Carolina...
  Northwestern Georgetown County in northeastern South Carolina...
  Dillon County in northeastern South Carolina...
  Northwestern Horry County in northeastern South Carolina...
  Marion County in northeastern South Carolina...
  Northeastern Williamsburg County in northeastern South Carolina...

* Until 845 PM EDT

* At 751 PM EDT, severe thunderstorms were located along a line
  extending from Lake City to near Warsaw, moving north at 55 mph.

  HAZARD...60 mph wind gusts and penny size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage trees and power lines. 

* Locations impacted include...
  Marion, Dillon, Lake City, Mullins, Horry, Johnsonville, Latta,
  Pamplico, Lake View, Hemingway, Sellers, Rhems, Blue Brick, Hamer,
  Nesmith, Rains, Morrisville, Minturn, Galivants Ferry and Warsaw.

This includes the following highways...
 Interstate 95 IN South Carolina between mile markers 177 and 198.
 SC Highway 22 between mile markers 1 and 6.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 1100 PM EDT for northeastern
South Carolina.

LAT...LON 3386 7978 3438 7959 3461 7945 3416 7892
      3333 7945
TIME...MOT...LOC 2351Z 196DEG 49KT 3387 7972 3353 7948 

HAIL...0.75IN
WIND...60MPH
 
$$

MBB
2 follow-up statements
587 
WWUS52 KILM 160023
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
823 PM EDT SUN APR 15 2018

SCC041-043-089-160032-
/O.CAN.KILM.SV.W.0009.000000T0000Z-180416T0045Z/
Florence SC-Georgetown SC-Williamsburg SC-
823 PM EDT SUN APR 15 2018

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN FLORENCE...
NORTHWESTERN GEORGETOWN AND NORTHEASTERN WILLIAMSBURG COUNTIES IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 1100 PM EDT for northeastern
South Carolina.

LAT...LON 3373 7920 3447 7954 3461 7945 3416 7892
TIME...MOT...LOC 0022Z 214DEG 51KT 3455 7952 3383 7919 

$$

SCC033-051-067-160045-
/O.CON.KILM.SV.W.0009.000000T0000Z-180416T0045Z/
Dillon SC-Horry SC-Marion SC-
823 PM EDT SUN APR 15 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR DILLON...NORTHWESTERN HORRY AND EASTERN MARION COUNTIES...

At 822 PM EDT, severe thunderstorms were located along a line
extending from near Dunbar to near Pee Dee Crossroads, moving
northeast at 60 mph.

HAZARD...60 mph wind gusts and pea size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect damage trees and power lines. 

Locations impacted include...
Marion, Dillon, Mullins, Horry, Latta, Lake View, Fork, Zion, Hamer,
Pee Dee Crossroads, Gapway, Rains, Dongola, Minturn, Galivants Ferry,
Floydale, Smithboro, Kemper, Bayboro and Little Rock.

This includes the following highways...
 Interstate 95 IN South Carolina between mile markers 185 and 198.
 SC Highway 22 between mile markers 1 and 6.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 1100 PM EDT for northeastern
South Carolina.

LAT...LON 3373 7920 3447 7954 3461 7945 3416 7892
TIME...MOT...LOC 0022Z 214DEG 51KT 3455 7952 3383 7919 

HAIL...0.75IN
WIND...60MPH
 
$$

MBB
673 
WWUS52 KILM 160040
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
840 PM EDT SUN APR 15 2018

SCC033-051-067-160050-
/O.EXP.KILM.SV.W.0009.000000T0000Z-180416T0045Z/
Dillon SC-Horry SC-Marion SC-
840 PM EDT SUN APR 15 2018

...THE SEVERE THUNDERSTORM WARNING FOR DILLON...NORTHWESTERN HORRY
AND EASTERN MARION COUNTIES WILL EXPIRE AT 845 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 1100 PM EDT for northeastern
South Carolina.

LAT...LON 3373 7920 3447 7954 3461 7945 3416 7892
TIME...MOT...LOC 0040Z 196DEG 49KT 3477 7944 3405 7911 

$$

MBB

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Apr 15, 6:44 PM EDT, 1 hour 8 minutes earlier.

Area forecast discussion, Apr 15, 6:44 PM EDT, 1 hour 8 minutes before
Area Forecast Discussion
National Weather Service Wilmington NC
644 PM EDT Sun Apr 15 2018

.SYNOPSIS...
Strong to severe thunderstorms this evening could bring damaging
winds and heavy rain. A strong cold front will move overhead
late tonight bringing dry and cooler weather Monday. As high
pressure to our south moves offshore Tuesday, temperatures will
warm with above normal temperatures expected Wednesday and
Thursday. A cold front will move across the area Thursday night.
High pressure will follow Friday and Saturday. Another frontal
system will approach from the west Sunday and bring an small
chance of showers and thunderstorms.

&&

.NEAR TERM /THROUGH MONDAY NIGHT/...
As of 645 PM Sunday...The first leading squall line has pushed
into the Pee Dee counties, but has since stalled its eastward
motion. This is due to the atmospheric steering flow backing around
to due south in advance of a strong jet streak digging across
Georgia and into the base of the upper level trough. The entire
upper system is taking on a negative tilt which is excellent for
producing wide-open divergence aloft. This should help sustain
a couple lines of strong to severe thunderstorms over the next
6 hours that should push across the eastern Carolinas and drop a
widespread 1 to 2 inches of rain with locally higher amounts.

The low-level winds have also backed around slightly east of
due south which is advecting a relatively stable marine
boundary layer onshore. The last of the 'large' surface
instability (CAPE 1000 J/kg or more) exists where temperatures
are still in the mid-upper 70s inland ahead of the squall line.
With the loss of daytime heating look for surface-based
instability to drop to less than 500 J/kg, but with elevated
CAPE remaining a bit larger. This instability coupled with
excellent upper dynamics should be sufficient to sustain storms
as they move across the area. PoPs remain at 100 percent area
wide.

One change to the forecast was to raise a wind advisory this
evening for areas within 20-30 miles of the coast. Most model
guidance shows a powerful southerly low level jet developing
with 50 knot winds dipping as low as 1000 feet AGL. Even outside
of convection look for surface winds near the coast to increase
to 25-35 mph with gusts as high as 45 mph as the LLJ moves overhead.
This may occur literally just ahead the main convective line
along the coast late this evening. Convective downdrafts could
easily tap into this wind energy and produce additional strong
wind gusts, and we're maintaining severe wording in the
forecast through midnight.

Discussion from 300 PM follows...

A Tornado Watch is in effect for portions of our inland areas
of northeast South Carolina and southeast North Carolina and
will likely be expanded east later this afternoon or early eve.
The watch is currently valid til 11p.

The severe threat continues to be late day and this eve across the
Interstate 95 corridor and points west in association with a bowing
squall line. This squall line will then continue to move east across
the remainder of the area, moving offshore within an hour or two
either side of midnight. Given the 0-6 km storm motion, individual
cells will be moving to the N at more than 50 mph.

The primary risk continues to be damaging thunderstorm winds and
there have been some gusts upstream in excess of 60 and 70 mph.
However, there also remains a smaller risk for tornadoes, especially
with cells that develop near a break in the squall line or out ahead
of it. Some large hail can not be ruled out with the strongest
updrafts.

The mid to upper trough will become negatively tilted as it moves
east with strong upper level support. Strong upward vertical motion
with sharp mid-level cooling and diurnal heating will help to
destabilize the atmosphere.

Sounding data shows moisture and instability increasing in warm air
mass ahead of the cold front with mixed layer CAPE around 1100 J/kg
and precipitable water values around 1.80 inches. Dewpoints have
surged into the upper 60s and lower 70s this afternoon. A low level
jet of 60 kt within 2 kft of the surface was just upstream and will
impinge on the area later this afternoon and tonight. Wind speeds to
75 kt were being sampled by upstream radars 5-10 kft above the
surface. The wind profile does veer slightly from the surface
through 5 kft, from SSE to SSW. Deep moisture with a Gulf of
Mexico/Atlantic tap will help to produce very high rainfall rates.
This suggests ponding water in low spots will be quite common. At
this time, we are forecasting near 1 inch to 2 inches of rain across
the area. However, we fully expect that some locations will tally
more than 2 inches and isolated 3 inch amounts are certainly
possible.

In the wake of a strong cold front, plenty of cool and dry air will
advect in from WSW to ENE between midnight and sunrise Monday. The
column dries out quickly with precipitable water values dropping to
less than a half inch by 12z Mon. Temps will drop down into the 50s.

Monday will be dry with cold air advection underway. A weak mid
level trough will skirt the area to the N, bringing some clouds
later Mon and Mon eve, but it appears too dry to support any
precipitation. Highs will be in the lower to mid 60s.

.SHORT TERM /MONDAY NIGHT THROUGH TUESDAY NIGHT/...
As of 300 PM Sunday...Behind secondary surge of cold and dry air,
skies will clear Mon night and we are setting up for a cold night.
Winds will have a difficult time completely decoupling given the 20-
30 kt winds above the boundary layer. No freeze is expected, but
lows in the upper 30s and lower 40s are forecast. Our traditionally
cold spots will likely dip to the mid 30s. Frost is not expected,
given moist ground temps mainly in the mid 50s and lower 60s by that
time and dewpoint depressions slow to narrow.

High pressure to our S will move offshore Tue afternoon commencing a
period of warm air advection. We should see temps recover to at
least the mid and upper 60s Tue afternoon despite the abnormally
cold start. As winds turn SW late day, a few lower 70s will be
possible inland. Minimum relative humidity will drop as low as 25 to
30 percent with a few afternoon wind gusts of 15 to 20 mph likely.
Winds will be very light to calm Tue night, but the overall flow
will be SW which should keep temps from dropping below the mid and
upper 40s and closer to 50 at the immediate coast.

.LONG TERM /WEDNESDAY THROUGH SUNDAY/...
As of 300 PM Sunday...Fair weather is expected Wednesday through
Saturday, despite the passage of a cold front on Thursday as
moisture is forecast to be limited with the front.  Cool high
pressure will then control area weather into Sunday when another
frontal system approaching from the west will bring a small chance
for showers and thunderstorms.  Max temperatures Wed and Thu will
reach the upper 70s to lower 80s with upper 60s to lower 70s
expected Fri through Sun.  Mins in the upper 50s to lower 60s Wed
night will cool to the upper 40s to lower 50s for the remainder of
the long term period.

&&

.SHORT TERM /TUESDAY THROUGH TUESDAY NIGHT/...
As of 300 PM Sunday...Behind secondary surge of cold and dry air,
skies will clear Mon night and we are setting up for a cold night.
Winds will have a difficult time completely decoupling given the 20-
30 kt winds above the boundary layer. No freeze is expected, but
lows in the upper 30s and lower 40s are forecast. Our traditionally
cold spots will likely dip to the mid 30s. Frost is not expected,
given moist ground temps mainly in the mid 50s and lower 60s by that
time and dewpoint depressions slow to narrow.

High pressure to our S will move offshore Tue afternoon commencing a
period of warm air advection. We should see temps recover to at
least the mid and upper 60s Tue afternoon despite the abnormally
cold start. As winds turn SW late day, a few lower 70s will be
possible inland. Minimum relative humidity will drop as low as 25 to
30 percent with a few afternoon wind gusts of 15 to 20 mph likely.
Winds will be very light to calm Tue night, but the overall flow
will be SW which should keep temps from dropping below the mid and
upper 40s and closer to 50 at the immediate coast.

&&

.LONG TERM /WEDNESDAY THROUGH SUNDAY/...
Fair weather is expected Wednesday through Saturday, despite
the passage of a cold front on Thursday as moisture is forecast
to be limited with the front. Cool high pressure will then
control area weather into Sunday when another frontal system
approaching from the west will bring a small chance for showers
and thunderstorms. Max temperatures Wed and Thu will reach the
upper 70s to lower 80s with upper 60s to lower 70s expected Fri
through Sun. Mins in the upper 50s to lower 60s Wed night will
cool to the upper 40s to lower 50s for the remainder of the long
term period.

&&

.AVIATION /18Z SUNDAY THROUGH FRIDAY/...
As of 18Z...MVFR cigs likely coastal terminals early this afternoon
becoming low VFR. Low VFR cigs KFLO/KLBT through the afternoon. Have
included VCSH all terminals for the afternoon. Winds will be south
and very gusty.

Line of thunderstorms will move into KLBT/KFLO 23-00Z and the
coastal terminals 00-01Z. LLWS prior to thunderstorms likely as low
level jet moves in ahead of thunderstorms. MVFR expected with a
brief period of IFR/wind gusts to 40 kt. VFR developing a couple of
hours after onset of storms. VFR with gusty southwest winds
overnight through the end of the TAF period.

Extended outlook...VFR.

&&

.MARINE...
NEAR TERM /THROUGH MONDAY/...
As of 630 PM Sunday...The squall line is still inland across the
eastern Carolinas but should maintain itself quite well as it
moves across the coastal waters late this evening and overnight.
A power low level jet as strong as 50 knots just 1000 feet aloft
should still bring gale-force winds tonight, even outside of
thunderstorm activity. Latest buoy reports show wave heights
are rising, and we still anticipate they could reach 10 feet
near 20 miles distance from shore during the worst of the event
tonight. Discussion from 300 PM follows...

A Gale Warning is in effect for all waters through tonight.
Numerous to widespread thunderstorms are expected tonight,
ending before daybreak Mon with the passage of a cold front.
Some thunderstorms later this eve and into the first part of the
overnight will likely be severe.

Gradient winds will increase to 30 to 35 kt, the strongest winds are
expected this eve. Gusts to around 40 kt are expected tonight. S
winds will veer to SW and then W behind the cold front. Seas will
build to 7 to 11 ft, highest this eve and into the overnight before
beginning a slow recession as offshore winds take hold. Small Craft
Advisory conditions are expected Mon for winds of 20 to 25 kt and
gusts to around 30 kt. Sustained winds early Mon morning will be
near 30 kt. Seas will be subsiding from 6 to 9 ft early in the
morning to 5 to 7 ft late in the afternoon.

SHORT TERM /MONDAY NIGHT THROUGH TUESDAY NIGHT/...
As of 300 PM Sunday...A secondary boundary will move across the
waters Mon night, shifting the wind direction from W to NW. Winds
will then back to W and SW Tue afternoon as high pressure to our S
moves offshore. Wind speeds should still be 20 to 25 kt Mon night,
diminishing to 15 to 20 kt late. Wind speeds of 15 to 20 kt Tue will
decrease to 10 to 15 kt overnight Tue. Offshore flow Mon night will
drive seas from 5 to 7 ft during the eve to 3 to 5 ft by Tue
morning. Seas will be 3 to 4 ft for the remainder of the period,
although 5 ft seas may linger across the outer northern waters Tue.

LONG TERM /WEDNESDAY THROUGH FRIDAY/...
As of 300 PM Sunday...High pressure will give way to a quick
moving front that will cross the waters late on thursday. Southwest
winds will increase from 10 to 15 knots early Wednesday to 15 to 20
KT Wed night and Thu.  Winds will become W to NW after the frontal
passage Thu night before shifting to the N and decreasing to 10 to
15 KT on Friday.  There is a chance winds could reach 25 KT Wed
night and Thu and a small craft advisory may be required Wednesday
night into Thursday. Seas of 2 to 3 FT early Wed will build to 3 to
5 FT by evening and continue into Thu before subsiding to 2 to 3 FT
by late Fri.

&&

.ILM WATCHES/WARNINGS/ADVISORIES...
SC...Wind Advisory until 1 AM EDT Monday for SCZ054>056-058.
     Beach Hazards Statement until 8 PM EDT this evening for SCZ054-
     056.
NC...Wind Advisory until 1 AM EDT Monday for NCZ105>110.
     Beach Hazards Statement until 8 PM EDT this evening for NCZ106-
     108.
     Coastal Flood Advisory until midnight EDT tonight for NCZ107.
     High Rip Current Risk until 8 PM EDT this evening for NCZ110.
MARINE...Gale Warning until 6 AM EDT Monday for AMZ250-252-254-256.

&&

SYNOPSIS...RJD/TRA
NEAR TERM...RJD/TRA
SHORT TERM...RJD
LONG TERM...RAN
AVIATION...MRR
Hazardous weather outlook, Apr 15, 6:25 PM EDT, 1 hour 27 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Wilmington NC
625 PM EDT Sun Apr 15 2018

AMZ250-252-254-256-161100-
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-
625 PM EDT Sun Apr 15 2018

...GALE WARNING IN EFFECT UNTIL 6 AM EDT MONDAY...

This Hazardous Weather Outlook is for the adjacent Coastal Waters.

.DAY ONE...Tonight.

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

   Gale Warning.

Severe thunderstorms are possible tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Small Craft Advisory conditions are expected Monday and Monday
night.

Small Craft Advisory conditions possible mid week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

NCZ087-SCZ017-023-024-032-033-039-161100-
Robeson-Marlboro-Darlington-Dillon-Florence-Marion-Williamsburg-
625 PM EDT Sun Apr 15 2018

...TORNADO WATCH 53 IN EFFECT UNTIL 11 PM EDT THIS EVENING...

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

.DAY ONE...Tonight.

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

   Tornado Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

For those with fire weather concerns, near critical relative
humidity and gusty winds Tuesday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

NCZ096-099-SCZ059-161100-
Bladen-Columbus-Northern Horry-
625 PM EDT Sun Apr 15 2018

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

.DAY ONE...Tonight.

Severe thunderstorms are expected tonight. The primary risk will be
damaging winds, however an isolated tornado is possible. Torrential
downpours may create minor flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

For those with fire weather concerns, near critical relative
humidity and gusty winds are possible Tuesday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

NCZ107-161100-
Inland New Hanover-
625 PM EDT Sun Apr 15 2018

...WIND ADVISORY IN EFFECT UNTIL 1 AM EDT MONDAY...
...COASTAL FLOOD ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

This Hazardous Weather Outlook is for southeast North Carolina.

.DAY ONE...Tonight.

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

   Wind Advisory.
   Coastal Flood Advisory.

Severe thunderstorms are expected tonight. The primary risk will be
damaging winds, however an isolated tornado is possible. Torrential
downpours may create minor flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

For those with fire weather concerns, near critical relative
humidity and gusty winds are possible Tuesday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

NCZ105-109-SCZ055-058-161100-
Inland Pender-Inland Brunswick-Inland Georgetown-Central Horry-
625 PM EDT Sun Apr 15 2018

...WIND ADVISORY IN EFFECT UNTIL 1 AM EDT MONDAY...

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

.DAY ONE...Tonight.

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

   Wind Advisory.

Severe thunderstorms are expected tonight. The primary risk will be
damaging winds, however an isolated tornado is possible. Torrential
downpours may create minor flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

For those with fire weather concerns, near critical relative
humidity and gusty winds are possible Tuesday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

NCZ110-161100-
Coastal Brunswick-
625 PM EDT Sun Apr 15 2018

...WIND ADVISORY IN EFFECT UNTIL 1 AM EDT MONDAY...
...HIGH RIP CURRENT RISK IN EFFECT UNTIL 8 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for southeast North Carolina.

.DAY ONE...Tonight.

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

   High Rip Current Risk.
   Wind Advisory.

Severe thunderstorms are expected tonight. The primary risk will be
damaging winds, however an isolated tornado is possible. Torrential
downpours may create minor flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

For those with fire weather concerns, near critical relative
humidity and gusty winds are possible Tuesday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

NCZ106-108-SCZ054-056-161100-
Coastal Pender-Coastal New Hanover-Coastal Horry-Coastal Georgetown-
625 PM EDT Sun Apr 15 2018

...WIND ADVISORY IN EFFECT UNTIL 1 AM EDT MONDAY...
...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...MODERATE RISK OF RIP CURRENTS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

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

.DAY ONE...Tonight.

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

   Beach Hazards Statement.
   Wind Advisory.
   Moderate Risk of Rip Currents.

Severe thunderstorms are expected tonight. The primary risk will be
damaging winds, however an isolated tornado is possible. Torrential
downpours may create minor flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

For those with fire weather concerns, near critical relative
humidity and gusty winds are possible Tuesday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

9

In the hours before

Local storm report, Apr 15, 7:15 PM EDT, 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
715 PM EDT SUN APR 15 2018

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

0450 PM     TSTM WND DMG     3 SSW BLENHEIM          34.47N  79.67W
04/15/2018                   MARLBORO           SC   LAW ENFORCEMENT

            TREE DOWN IN ROADWAY AT SCREW PIN RD AND SALEM RD

&&

EVENT NUMBER ILM1800012

CRM
Local storm report, Apr 15, 7:17 PM EDT, 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
717 PM EDT SUN APR 15 2018

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

0456 PM     TSTM WND DMG     1 E BLENHEIM            34.51N  79.64W
04/15/2018                   MARLBORO           SC   LAW ENFORCEMENT

            TREE DOWN IN ROADWAY AT SC 381 JUST WEST OF DRIGGERS
            CHAPEL RD

&&

EVENT NUMBER ILM1800013

CRM
Local storm report, Apr 15, 7:19 PM EDT, 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
719 PM EDT SUN APR 15 2018

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

0448 PM     TSTM WND DMG     4 SSW BLENHEIM          34.46N  79.67W
04/15/2018                   MARLBORO           SC   LAW ENFORCEMENT

            TREE DOWN IN ROADWAY AT SCREW PIN RD AND NOLAN RD

&&

EVENT NUMBER ILM1800014

CRM
Local storm report, Apr 15, 7:21 PM EDT, 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
721 PM EDT SUN APR 15 2018

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

0500 PM     TSTM WND DMG     3 E OAK GROVE           34.34N  79.50W
04/15/2018                   DILLON             SC   LAW ENFORCEMENT

            TREE DOWN BLOCKING ROAD ON HWY 917 NEAR CATTLE FARM RD

&&

EVENT NUMBER ILM1800015

CRM
Local storm report, Apr 15, 7:29 PM EDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
729 PM EDT SUN APR 15 2018

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

0430 PM     TSTM WND DMG     3 NNW BROWNSVILLE       34.44N  79.63W
04/15/2018                   MARLBORO           SC   LAW ENFORCEMENT

            TREE DOWN IN ROADWAY AT DUNBAR HIGHWAY NEAR ALLEN RIDGE
            RD

&&

EVENT NUMBER ILM1800016

CRM
Special weather statement, Apr 15, 7:38 PM EDT, 14 minutes before
Special Weather Statement
National Weather Service Wilmington NC
738 PM EDT SUN APR 15 2018

SCZ032-033-039-055-058-059-160000-
Marion SC-Northern Horry SC-Williamsburg SC-Florence SC-
Inland Georgetown SC-Central Horry SC-
738 PM EDT SUN APR 15 2018

...SPECIAL WEATHER STATEMENT FOR SOUTHEASTERN FLORENCE...NORTHWESTERN
GEORGETOWN...WEST CENTRAL HORRY...CENTRAL MARION AND EASTERN
WILLIAMSBURG COUNTIES UNTIL 800 PM EDT...

At 737 PM EDT, Doppler radar was tracking strong thunderstorms near
Morrisville, or 12 miles southeast of Kingstree, moving northeast at
70 mph.

Half inch hail and wind gusts of 50 to 55 mph will be possible with
thesestorms.

Locations impacted include...
Andrews, Johnsonville, Pamplico, Hemingway, Rhems, Galivants Ferry,
Warsaw, Hannah, Pee Dee Crossroads, Poston, Nesmith, Brittons Neck,
Rains, Indiantown, Outland, Gresham, Earle, Morrisville, Henry and
Kingsburg.

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 tornado watch remains in effect until 1100 PM EDT for northeastern
South Carolina.

LAT...LON 3336 7954 3355 7977 3418 7948 3404 7908
TIME...MOT...LOC 2337Z 205DEG 60KT 3359 7964

MBB

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 3:44 PM EDTSpecial Weather StatementILMFlorence, Marion61 min
Apr 15, 4:10 PM EDTSevere Thunderstorm WarningILMFlorence, Marion, Williamsburg65 min
Apr 15, 4:25 PM EDTSpecial Weather StatementILMDarlington, Dillon, Florence, Marlboro65 min
Apr 15, 4:47 PM EDTSevere Thunderstorm WarningILMDarlington, Dillon, Florence, Marion, Marlboro58 min
Apr 15, 5:53 PM EDTAreal Flood AdvisoryILMFlorence2 hr
Apr 15, 6:19 PM EDTWind AdvisoryILMGeorgetown, Horry7 hr
Apr 15, 7:03 PM EDTSpecial Weather StatementILMFlorence57 min
Apr 15, 7:38 PM EDTSpecial Weather StatementILMMarion, Williamsburg22 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2018Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.