Alert archive / South Carolina / Special Weather Statements in 2017
Special Weather Statement, NWS Wilmington, NC
NWS Wilmington, NC issued this special weather statement at Aug 6, 2017, 4:58 PM EDT for Marlboro County, South Carolina. It was in force for 47 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
- Aug 6, 2017, 4:58 PM EDT (20:58 UTC)
- Expired
- Aug 6, 2017, 5:45 PM EDT
- In force
- 47 min
- Issued by
- NWS Wilmington, NC
County Marlboro County, SC
The radar
The Wilmington radar (KLTX), 115 km from the middle of the area, began a volume at 20:59 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.0 hours before the alert went out and 166 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1276 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>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 Aug 6, 3:13 PM EDT, 1 hour 45 minutes earlier.
Area forecast discussion, Aug 6, 3:13 PM EDT, 1 hour 45 minutes before
Area Forecast Discussion National Weather Service Wilmington NC 313 PM EDT Sun Aug 6 2017 .SYNOPSIS... Scattered showers and thunderstorms this afternoon will linger into the evening. Showers and thunderstorms will increase Monday afternoon through Tuesday ahead of a front, which will stall nearby. The front will linger in the region through Friday. Significant rain amounts are possible Tuesday through Friday. The front dissipates early Saturday as the Bermuda High expands west. && .NEAR TERM /THROUGH MONDAY/... As of 3 PM Sunday...Heating is the main ingredient driving convection this afternoon with boundaries and column moisture as secondary but necessary components. As a result suspect that convection will wither after 2z-3z/10pm this evening. The weak boundary straddled across the area without upper support and diurnal cooling, will not be adequate to sustain convection in the overnight hours, despite the warm frontal like regime as the boundary lifts north, and forecast pop values will reflect this. Moisture profiles overnight suggest patchy low-based stratus is a possibility so will not advertise full clearing conditions. Monday appears to be a quiet day with little upper support until Monday night. If good August insolation can occur Monday, then we have a shot at convective rain, but if plenty clouds remain over the area then little convection will occur during the day. For this package will advertise isolated to scattered showers and storms for Monday and mainly afternoon. && .SHORT TERM /MONDAY NIGHT THROUGH TUESDAY NIGHT/... As of 3 PM Sunday...A cold front will drop into the area Monday night into Tuesday morning bringing increasing rain chances from NW to SE. The GFS precip output looks more plausible being quite aligned with the boundary in contrast to the haphazard QPF displayed by the WRF. The weakening front will stall in the area later Tuesday into Tuesday night keeping the weather unsettled. Cloud cover may be extensive enough to boost nighttime lows above climatology while suppressing daytime highs. Precipitable water values will surge to an impressive 2.25" meaning some of the rain could be quite heavy at times but wind fields look strong enough for quick enough storm motion to keep the flooding problems rather isolated. && .LONG TERM /WEDNESDAY THROUGH SUNDAY/... As of 3 PM Sunday...Extended period of unsettled weather on tap with a slowly weakening front stalled in the area for much of the period. Flow aloft is slightly amplified with subtle 5h trough over the east. The flow aloft is enough to ensure a steady supply of tropical moisture but not sharp enough to have a connection with features farther north that would help shift everything east. Showers and thunderstorms will be a staple of the period with slightly better chances during the day. Although daytime temperatures will run a little below climo diurnal heating will increase daytime convection. Activity continues overnight but with coverage decreasing. The only caveat to that will be timing of shortwaves within the mid level flow, something which is impossible to do several days out. Late in the period the front dissipates and Bermuda High expands west. Piedmont trough and sea breeze will become the focus of diurnal convection with coverage being a little less Sun. && .AVIATION /18Z SUNDAY THROUGH FRIDAY/... As of 1715Z...Cumulus clouds will build up this afternoon and isolated showers and t-storms are expected to develop. As a result isolated MVFR cigs/vsbys expected through 00z, then diminishing activity with mainly fair conditions overnight except for isolated patches of IFR cigs due to low stratus. Coverage limited to the extent of non-inclusion is TAFS. Extended Outlook...Brief periods of MVFR/IFR ceilings and visibility are possible through the period due to scattered showers and thunderstorms. Areas of early morning MVFR/IFR stratus and/or fog will be possible Wednesday and Thursday mornings. && .MARINE... NEAR TERM /THROUGH MONDAY/... As of 3 PM Sunday...SW winds will prevail this period as Bermuda high pressure remains anchored offshore. Low pressure approaching from the west will begin to compress the pressure gradient and SW winds will increase Monday afternoon to 15-20 KT. By late in the day Monday an 'exercise caution' statement or even an 'advisory' is possible as winds are apt to increase further into the Monday night. Radar checks are encouraged as a few TSTMS may impact the 0-20 NM waters through Monday. Seas will be a combination of increasing SSW waves this period every 5-6 seconds, and SE waves 1-1.5 feet every 9-10 seconds. SHORT TERM /MONDAY NIGHT THROUGH TUESDAY NIGHT/... As of 3 PM Sunday...The approach of a cold front from the NW could push winds marginally into Advisory territory. For the remainder of the period the front will stall and weaken allowing the gradient to relax slightly. With seas not building to advisory/6ft levels during the early timeframe they will likely not require cautionary SCEC headlines following Monday night. LONG TERM /WEDNESDAY THROUGH FRIDAY/... As of 3 PM Sunday...Waters will remain between a front stalled to the west and Bermuda High to the east. Gradient will be on the weak side with southwest flow peaking around 10 kt each afternoon and evening. Seas will run 2 to 3 ft through the period. && .ILM WATCHES/WARNINGS/ADVISORIES... SC...None. NC...None. MARINE...None. && NEAR TERM...MJC SHORT TERM...MBB LONG TERM...III AVIATION...MJC
Hazardous weather outlook, Aug 6, 4:20 PM EDT, 38 minutes before
Hazardous Weather Outlook National Weather Service Wilmington NC 420 PM EDT Sun Aug 6 2017 NCZ087-096-099-105-107-109-SCZ017-023-024-032-033-039-053>056-072030- Robeson-Bladen-Columbus-Inland Pender-Inland New Hanover- Inland Brunswick-Marlboro-Darlington-Dillon-Florence-Marion- Williamsburg-Inland Horry-Coastal Horry-Inland Georgetown- Coastal Georgetown- 420 PM EDT Sun Aug 6 2017 This Hazardous Weather Outlook is for southeast North Carolina and northeast South Carolina. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NCZ106-108-110-072030- Coastal Pender-Coastal New Hanover-Coastal Brunswick- 420 PM EDT Sun Aug 6 2017 ...MODERATE RISK OF RIP CURRENTS IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING... This Hazardous Weather Outlook is for southeast North Carolina. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Moderate Risk of Rip Currents. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. AMZ250-252-254-256-072030- 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- 420 PM EDT Sun Aug 6 2017 This Hazardous Weather Outlook is for The adjacent Coastal Waters. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Small Craft Advisory possible Monday night. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. 04
In the hours before
Special weather statement, Aug 6, 4:58 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Wilmington NC
458 PM EDT SUN AUG 6 2017
NCZ087-SCZ017-024-062145-
Robeson NC-Marlboro SC-Dillon SC-
458 PM EDT SUN AUG 6 2017
...SPECIAL WEATHER STATEMENT...
At 458 PM EDT, Doppler radar was tracking a strong thunderstorm near
Dunbar, or near Bennettsville, moving northeast at 20 mph.
Half inch hail and winds in excess of 30 mph will be possible with
this storm.
Locations impacted include...
Bennettsville, Pembroke, Maxton, Mccoll, Rowland, Clio, Raemon,
Wakulla, Purvis, Prospect, Dunbar, Minturn, Elrod, Blenheim,
Mcdonald, Tatum and Raynham.
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.
&&
LAT...LON 3454 7911 3444 7965 3460 7974 3469 7954
3463 7946 3477 7933 3479 7934 3482 7927
TIME...MOT...LOC 2058Z 246DEG 16KT 3456 7962
MBBThe office that day
Everything else NWS Wilmington, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 6:41 PM EDT | Special Weather Statement | ILM | Williamsburg | 49 min |
| Aug 6, 7:47 PM EDT | Special Weather Statement | ILM | Florence | 43 min |
Nearby
Special Weather Statements in South Carolina, 2017Every special weather statement in 2017
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.