Alert archive / South Carolina / Special Weather Statements in 2012
Special Weather Statement, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this special weather statement at Oct 7, 2012, 7:16 AM EDT for York County, South Carolina. It was in force for 44 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
- Oct 7, 2012, 7:16 AM EDT (11:16 UTC)
- Expired
- Oct 7, 2012, 8:00 AM EDT
- In force
- 44 min
- Issued by
- NWS Greenville-Spartanburg, SC
County York County, SC
The radar
The Columbia radar (KCAE), 132 km from the middle of the area, began a volume at 11:17 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 00:00Z, 11.3 hours before the alert went out and 131 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
- 12 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 1092 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
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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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this special weather statement went out at Oct 7, 5:13 AM EDT, 2 hours 3 minutes earlier.
Area forecast discussion, Oct 7, 5:13 AM EDT, 2 hours 3 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 513 AM EDT SUN OCT 7 2012 .SYNOPSIS... LOW PRESSURE WILL SLOWLY MOVE NORTHEAST FROM THE NORTH CAROLINA COAST TODAY AS ANOTHER WEATHER DISTURBANCE APPROACHES FROM THE WEST. COOL AND CLOUDY WEATHER WILL PERSIST THROUGH AT LEAST MONDAY. HIGH PRESSURE WILL RETURN ON TUESDAY WITH MILDER TEMPERATURES. ANOTHER WEAK COLD FRONT WILL ARRIVE LATE WEDNESDAY. && .NEAR TERM /THROUGH TONIGHT/... FRONTAL BOUNDARY REMAINS QUASI-STATIONARY ROUGHLY ALONG THE I-85 CORRIDOR...AS PESKY MESO-LOW PERSISTS NEAR THE NC/SC BORDER. MEANWHILE...A SHORT WAVE TROUGH WAS OBSERVED IN WATER VAPOR IMAGERY APPROACHING THE MID-MISS VALLEY EARLY THIS MORNING. A BAND OF MAINLY LIGHT RAIN HAD PUSHED INTO EAST TENN WITHIN A BAND OF FRONTOGENETICAL FORCING NORTHWEST OF THE LOW LEVEL BAROCLINIC ZONE. THIS ACTIVITY WILL OVERSPREAD THE NC MTNS THIS MORNING...SUPPORTING LIKELY TO CATEGORICAL POPS. THE MODELS CONTINUE TO INDICATE THAT THE BEST FORCING WILL EXIST NORTH OF THE AREA THIS MORNING...WHICH MAKES SENSE BASED UPON THE CURRENT LOCATION OF THE FRONTAL ZONE. NEVERTHELESS...DECENT LOW LEVEL ISENTROPIC LIFT SHOULD BECOME ESTABLISHED DEEPER INTO THE COOL AIR (MAINLY ALONG/NORTH OF I-40 AND OVER THE NC MTNS THIS MORNING...AND AT LEAST LIKELY POPS WILL BE CARRIED IN THESE AREAS THROUGH THE MORNING. MEANWHILE...POPS WILL TAPER OFF TO LOW CHANCE ACROSS THE SOUTHERN ZONES. BY AFTERNOON...THE LOW LEVEL FLOW IS EXPECTED TO TURN SHARPLY TOWARD THE WEST AND NW...AS THE SHORT WAVE BEGINS TO PASS BY TO THE NORTH. THIS WILL ACT TO SHUT OFF THE LOW LEVEL LIFT AND BRING AN END TO PRECIP CHANCES ACROSS MOST OF THE AREA. HOWEVER...A BRIEF NW FLOW MAY INTERACT WITH DEEPER MOISTURE TO YIELD SOME SCATTERED SHOWERS THROUGH THE AFTERNOON ALONG THE TENNESSEE BORDER. MOSTLY DRY WEATHER IS EXPECTED TONIGHT...ALTHOUGH PRECIP ASSOCIATED WITH THE NEXT SHORT WAVE MAY APPROACH THE REGION BY DAYBREAK. THE TEMPERATURE FORECAST FOR TODAY IS QUITE COMPLEX...SINCE WEAK COLD ADVECTION IS ALREADY OCCURRING ACROSS THE NORTHERN ZONES...WHILE THERE IS UNCERTAINTY REGARDING HOW SOON THE FRONT WILL BEGIN TO TAKE ON MORE OF A SOUTHWARD PUSH. MUCH WILL ALSO HINGE UPON HOW MUCH/ WHERE PRECIP FALLS TODAY. IN LIGHT OF PRECIP AND FRONTAL POSITION EXPECTATIONS TODAY...WE WILL FEATURE ABOUT A 15 DEGREE RANGE FROM NORTH TO THE SOUTH...WITH LOWER 70S ACROSS THE SOUTHERN ZONES...AND ONLY UPPER 50S ACROSS THE NORTH. SKIES MAY CLEAR BRIEFLY TONIGHT... BUT CLOUDS ARE EXPECTED TO FILL BACK IN AS THE NEXT WAVE APPROACHES...SO ALTHOUGH MIN TEMPS WILL BE QUITE A BIT BELOW NORMAL...NO FROST CONCERNS ARE ANTICIPATED FOR THE HIGHER ELEVATIONS. && .SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/... AS OF 505 AM...THE FORECAST HAS BEEN UPDATED TO TIME THE UPGLIDE- FORCED RAIN SHIELD ACROSS THE CWA THROUGH THE MORNING. POPS HAVE ALSO BEEN INCREASED TO CATEGORICAL ACROSS THE MTNS. IN ADDITION... SCATTERED SHOWERS HAVE DEVELOPED ALONG THE STATIONARY FRONT (ROUGHLY PARALLELING THE I-85 CORRIDOR)...SO POPS HAVE BEEN BEEFED UP A BIT THERE AS WELL. AT 2 AM EDT SUNDAY...THE SHORT TERM FCST PICKS UP AT 12Z ON MONDAY WITH A WEAK COLD AIR WEDGE SETTING UP BRIEFLY WITH A WEAK SURFACE HIGH MOVING WEST OT EAST FROM KENTUCKY TO THE VIRGINIAS AND AT THE MID LEVELS A SHORTWAVE COMBINED WITH SURFACE MOISTURE OVER THE SOUTHEAST WILL PRODUCE LIGHT RAIN AND DRIZZLE ESPECIALLY FOR WESTERN NORTH CAROLINA. THIS WILL BE OCCURRING IN MID DAY TO EARLY AFTERNOON. MADE ADJUSTMENTS TO INCREASE POPS AND SLIGHTLY LOWER HIGHS MONDAY WHICH WILL BE NEARLY 20 DEGREES BELOW THE NORMAL HIGHS. CLOUD COVER WILL LINGER...ESPECIALLY OVER THE EASTERN ZONES INTO MONDAY NIGHT. AS A RESULT...THERE WILL BE MILDER LOWS THAN PREVIOUSLY EXPECTED. WE NOW HAVE FAR FEWER FORECAST TEMPERATURES IN THE 30S FOR THE NORTH CAROLINA MOUNTAINS...MAINLY ALONG THE HIGHER RIDGES. THIS GREATLY REDUCES THE AREA AFFECTED BY FROST AND WILL DEPEND ON HOW MUCH CLEARING OCCURS AS THE LARGER CLOUD SHIELD MOVES EAST OF THE AREA. WITH MORE SUNSHINE ON TUESDAY...HIGHS WILL BE ONLY ABOUT 2 CATEGORIES BELOW THE NORMAL HIGHS. && .LONG TERM /WEDNESDAY THROUGH SATURDAY/... AS OF 215 AM EDT SUNDAY...THE MEDIUM RANGE FORECAST PICKS UP AT 12Z WEDNESDAY. THE STRONG SHORTWAVE LONG ANTICIPATED TO CROSS THE GREAT LAKES ON WEDNESDAY IS STILL ON TRACK. STILL EXPECT ONLY WEAK AFFECTS FOR THE NC MOUNTAINS WEDNESDAY AFTERNOON. ONLY CARRYING LOW END SLIGHT POPS FOR THIS PERIOD. HIGH PRESSURE WILL BUILD OVER THE EAST THURSDAY AND FRIDAY. AS THE HIGH MOVES OFF THE EAST COAST NEXT WEEKEND...A SOUTHERLY FLOW SHOULD DEVELOP WHICH WOULD INCREASE MOISTURE AND POSSIBLY BRING UPSLOPE RAIN FOR SOUTHERN MOUNTAIN AREAS LATE IN THE WEEKEND. THAT IS BEYOND THE CURRENT FORECAST AND WILL CONSIDER THAT IN LATER RUNS OF THE FORECAST. TEMPERATURES WILL BE NEAR OR JUST A FEW DEGREES BELOW NORMAL IN THE 4 TO 7 DAY FORECAST. && .AVIATION /09Z SUNDAY THROUGH THURSDAY/... AT KCLT...THERE ARE SOME IFR CLOUDS AROUND THE AREA EARLY THIS MORNING. IN FACT...KCLT JUST PICKED UP A SCT LAYER AT 008 AT 135Z. THIS MAY BE A RESULT OF THE MECHANISM THAT WAS FORCING LAST EVENINGS SHOWERS. AS SUCH...I DONT EXPECT THESE CLOUDS TO FILL IN...AS THE COOL/SLIGHTLY DRIER AIR NORTH OF THE FRONT WILL CONTINUE TO GRADUALLY DEEPEN WITH TIME. HOWEVER...A BRIEF IFR CIG WILL BE POSSIBLE OVER THE NEXT HOUR OR SO. IT ALSO APPEARS THAT THE STRONGER LOW LEVEL LIFT WILL SET UP NORTH AND WEST OF KCLT LATER THIS MORNING...KEEPING MOST OF THE RAIN AND LOWER CIGS AWAY FROM THE TERMINAL. HOWEVER...CIGS ARE EXPECTED TO LOWER TO MVFR BY DAYBREAK. WITH DEWPOINTS SLOWLY FALLING AND CLOUD COVER KEEPING COOLING SOMEWHAT IN CHECK...WE ARE NOT EXPECTING A GREAT DEAL OF FOG ACROSS THE REGION...BUT A BRIEF PERIOD OF MVFR IS POSSIBLE. CIGS SHOULD REMAIN LOW THROUGH THE MORNING...BEFORE LIFTING IN RESPONSE TO WESTERLY FLOW DURING THE AFTERNOON. WINDS WILL REMAIN NE THROUGH THE PERIOD. ELSEWHERE...LOW MVFR CIGS ARE EXPECTED TO LOWER TO IFR AT KAVL BY 09Z OR SO...WHILE CIGS SHOULD REMAIN MVFR AT KHKY THROUGH AT LEAST THE MORNING HOURS. ELSEWHERE...MVFR CIGS ARE EXPECTED TO DEVELOP BY DAYBREAK. LOW CIGS SHOULD PERSIST THROUGH THE MORNING BEFORE LIFTING DURING THE AFTERNOON. AN APPROACHING UPPER LEVEL DISTURBANCE IS EXPECTED TO BRING -RA TO THE KAVL AREA DURING THE PRE-DAWN HOURS... AND TO KHKY BY AROUND SUNRISE. -RA CANNOT BE RULED OUT ELSEWHERE... BUT THE BETTER CHANCES SHOULD REMAIN OVER WESTERN NC. OUTLOOK...CIG AND VSBY RESTRICTIONS ARE POSSIBLE AGAIN SUNDAY NIGHT AND MONDAY. THEY SHUD LIFT TUE AS FAIR WEATHER RETURNS AND CONTINUES WED. AN EXPERIMENTAL AVIATION FORECAST CONSISTENCY TABLE SHOWING THE PERCENTAGE OF GUIDANCE MEMBERS AGREEING WITH THE SCHEDULED ISSUANCE CATEGORY IS AVAILABLE AT FOLLOWING LINK (USE LOWER CASE)... WWW.WEATHER.GOV/GSP/AVIATION/TABLES.HTM && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SYNOPSIS...DEO NEAR TERM...JDL SHORT TERM...DEO LONG TERM...DEO AVIATION...JDL
Hazardous weather outlook, Oct 7, 6:15 AM EDT, 1 hour 1 minute before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 615 AM EDT SUN OCT 7 2012 NCZ033-048>053-058-059-062>065-081015- AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-GRAHAM- NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON- 615 AM EDT SUN OCT 7 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. LOW TEMPERATURES SUNDAY NIGHT AND MONDAY NIGHT WILL BE IN THE MID TO UPPER 30S FOR PORTIONS OF THE NORTH CAROLINA MOUNTAIN...MAINLY AT AND NEAR RIDGE TOPS. THIS WILL LIKELY RESULT IN PATCHY FROST. IF SKIES CLEAR MONDAY NIGHT COMBINED WITH LIGHT WIND...THAT WILL BE THE MOST LIKELY TIME FOR FROST. .SPOTTER INFORMATION STATEMENT... NONE. GAZ010-017-018-026-028-029-NCZ035>037-056-057-068>072-082-501>510- SCZ001>014-019-081015- RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-ALEXANDER-IREDELL- DAVIE-CATAWBA-ROWAN-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS- UNION NC-CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS- GREATER BURKE-MCDOWELL MOUNTAINS-EASTERN MCDOWELL- RUTHERFORD MOUNTAINS-GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK- OCONEE MOUNTAINS-PICKENS MOUNTAINS-GREENVILLE MOUNTAINS- GREATER OCONEE-GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG- CHEROKEE-YORK-ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD- 615 AM EDT SUN OCT 7 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND 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... NONE. DEO
In the hours before
Special weather statement, Oct 7, 7:16 AM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
716 AM EDT SUN OCT 7 2012
NCZ071-082-SCZ009-071200-
MECKLENBURG-UNION-YORK-
716 AM EDT SUN OCT 7 2012
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN YORK...NORTHERN
UNION AND SOUTHERN MECKLENBURG COUNTIES THROUGH 800 AM EDT...
AT 714 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 6 MILES WEST OF TEGA CAY...OR 7 MILES NORTHEAST
OF YORK...MOVING EAST AT 45 MPH.
THIS STORM WILL IMPACT LOCATIONS NEAR...
TEGA CAY...
CAROWINDS...
PINEVILLE...
SOUTHPARK MALL...
STALLINGS...
MINT HILL...
SMALL HAIL...AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.
FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...TRY TO
GET INDOORS OR INTO A HARD TOPPED VEHICLE. OTHERWISE...STAY AWAY FROM
OPEN AREAS AND ISOLATED HIGH OBJECTS SUCH AS TREES. WHEN INDOORS...
STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING WIRED ELECTRONIC
DEVICES. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE STORM
APPROACHES.
LAT...LON 3502 8031 3498 8083 3505 8089 3501 8090
3498 8088 3495 8123 3512 8123 3523 8058
3517 8046 3517 8039 3518 8037 3517 8033
LANEThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 7, 7:39 AM EDT | Severe Thunderstorm Warning | GSP | Cabarrus, Mecklenburg, Union | 50 min |
| Oct 7, 8:20 AM EDT | Special Weather Statement | GSP | Greenville, Pickens | 25 min |
Nearby
Special Weather Statements in South Carolina, 2012Every special weather statement in 2012
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.