Alert archive / South Carolina / Special Weather Statements in 2017
Special Weather Statement, NWS Charleston, SC
NWS Charleston, SC issued this special weather statement at Jun 15, 2017, 5:03 PM EDT for Charleston County, South Carolina. It was in force for 27 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 15, 2017, 5:03 PM EDT (21:03 UTC)
- Expired
- Jun 15, 2017, 5:30 PM EDT
- In force
- 27 min
- Issued by
- NWS Charleston, SC
County Charleston County, SC
The radar
The Charleston,SC radar (KCLX), 95 km from the middle of the area, began a volume at 21:03 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, 9.1 hours before the alert went out and 9 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
- 783 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 962 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 37 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 Charleston, SC wrote its last area forecast discussion before this special weather statement went out at Jun 15, 3:17 PM EDT, 1 hour 46 minutes earlier.
Area forecast discussion, Jun 15, 3:17 PM EDT, 1 hour 46 minutes before
Area Forecast Discussion National Weather Service Charleston SC 317 PM EDT Thu Jun 15 2017 .SYNOPSIS... A summer-like pattern will continue through early next week as the area remains between Atlantic High pressure and an inland surface trough. && .NEAR TERM /UNTIL 6 AM FRIDAY MORNING/... Isolated to scattered convection may persist into the early evening hours, primarily driven by the sea breeze and convective outflows. Overall coverage looks fairly low given continued mid-level capping. Overnight, dry weather anticipated with lows in the lower 70s. && .SHORT TERM /6 AM FRIDAY MORNING THROUGH SUNDAY/... Minimal changes to the weather are expected in the short term. Our area will remain between Atlantic high pressure well offshore and an inland trough. A few weak disturbances in the mid-to-upper levels may move over or nearby our area in the short term, bringing periods of increased convective activity. However, it is too difficult to time the exact location and strength of these weak features. S to SW surface flow will allow plenty of moisture to stream into the area. PWATs near 2" combined with good instability is prompting us to keep POPs a bit above climo, especially inland where CAPE values will be near 1,500 J/kg daily. Highs are basically near normal for this time of year. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... Broad upper level trough will work its way across the eastern US early next week, with the majority of the energy from this feature remaining north of the area. Warm/moist airmass remains in place in the low levels, keeping the chance for afternoon showers and thunderstorms in the forecast. Low pressure may develop and move into the northern Gulf of Mexico middle of next week, which would likely provide a surge of moisture and the associated precip chances locally, but confidence is low in this feature's development and track, so have not made any major adjustments yet. Opted for near climo temps through the period. && .AVIATION /19Z THURSDAY THROUGH TUESDAY/... Isolated afternoon and evening convection is possible around KCHS this afternoon so we included a TEMPO SHRA. Less coverage expected in southeast GA given the weaker cumulus field. Extended Aviation Outlook: Mainly VFR. Brief flight restrictions are possible in afternoon showers/thunderstorms. && .MARINE... Gentle SW to S winds tonight with weak nocturnal surging producing winds around 15 kt over outer portions of the nearshore waters. Seas 2 to 3 ft. Friday through Tuesday: The southeast coast will reside between Atlantic high pressure well offshore and an inland trough through early next week. A front will approach from the northwest on Tuesday. A light breeze will prevail across the coastal waters, increasing to moderate with the normal warm season nocturnal surges and afternoon sea breezes. Seas will generally be 2-4 ft. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. && NEAR TERM...JRL SHORT TERM...MS LONG TERM...CEB AVIATION...JRL/MS MARINE...JRL/MS
Hazardous weather outlook, Jun 15, 3:32 AM EDT, 13 hours 31 minutes before
Hazardous Weather Outlook National Weather Service Charleston SC 332 AM EDT Thu Jun 15 2017 AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040- 042>045-047>052-160745- Charleston Harbor- Waters from South Santee River to Edisto Beach SC out 20 nm- Waters from Edisto Beach SC to Savannah GA out 20 nm- Waters from Savannah GA to Altamaha Sound GA out 20 nm...including Grays Reef National Marine Sanctuary- Waters from Savannah GA to Altamaha Sound GA extending from 20 to 60 nm-Jenkins-Screven-Candler-Bulloch-Effingham-Tattnall-Evans- Inland Bryan-Coastal Bryan-Inland Chatham-Coastal Chatham-Long- Inland Liberty-Coastal Liberty-Inland McIntosh-Coastal McIntosh- Allendale-Hampton-Inland Colleton-Dorchester-Inland Berkeley- Inland Jasper-Beaufort-Coastal Colleton-Charleston-Coastal Jasper- Tidal Berkeley- 332 AM EDT Thu Jun 15 2017 This Hazardous Weather Outlook is for Atlantic coastal waters, southeast Georgia and southeast South Carolina. .DAY ONE...Today and Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time.
In the hours before
Special weather statement, Jun 15, 2:38 PM EDT, 2 hours 25 minutes before
Special Weather Statement
National Weather Service Charleston SC
238 PM EDT THU JUN 15 2017
SCZ045-050-151900-
Inland Berkeley-Charleston-
238 PM EDT THU JUN 15 2017
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CHARLESTON AND
BERKELEY COUNTIES...
At 238 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorm near Awendaw, or 12 miles west of McClellanville,
moving northeast at 15 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...
Awendaw and Garris Landing.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
LAT...LON 3293 7965 3306 7982 3320 7965 3315 7947
TIME...MOT...LOC 1838Z 220DEG 14KT 3306 7968Special weather statement, Jun 15, 5:03 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Charleston SC
503 PM EDT THU JUN 15 2017
SCZ044-045-050-052-152130-
Inland Berkeley-Tidal Berkeley-Charleston-Dorchester-
503 PM EDT THU JUN 15 2017
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CHARLESTON...BERKELEY
AND DORCHESTER COUNTIES...
At 503 PM EDT, National Weather Service doppler radar indicated
strong thunderstorms along a line extending from Goose Creek to
Daniel Island, and moving west at 5 mph.
HAZARD...strong winds 45 to 55 mph.
IMPACT...Expect minor damage to tree limbs and blowing around of
light, unsecured objects.
Some locations in the path of these storms include...
Charleston, North Charleston, Mount Pleasant, Summerville, Goose
Creek, Hanahan, Middleton Place and Naval Weapons Station Charleston.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Report damage directly to the Charleston National Weather Service at
1-888-383-2024 when it is safe to do so. You can also email your
report to nws.charlestonsc@noaa.gov.
&&
LAT...LON 3300 8025 3278 8002 3285 7982 3305 8009
TIME...MOT...LOC 2103Z 071DEG 5KT 3298 8003 3285 7991The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 2:38 PM EDT | Special Weather Statement | CHS | Berkeley | 22 min |
| Jun 15, 4:02 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley, Charleston | 43 min |
| Jun 15, 4:47 PM EDT | Areal Flood Advisory | CHS | Berkeley, Charleston | 88 min |
| Jun 15, 5:31 PM EDT | Severe Thunderstorm Warning | CHS | Charleston, Dorchester | 35 min |
| Jun 15, 7:22 PM EDT | Special Weather Statement | CHS | Dorchester | 23 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.