Alert archive / South Carolina / Special Weather Statements in 2012
Special Weather Statement, NWS Columbia, SC
NWS Columbia, SC issued this special weather statement at May 22, 2012, 9:33 PM EDT for Lancaster County, South Carolina. It was in force for 57 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
- May 22, 2012, 9:33 PM EDT (01:33 UTC)
- Expired
- May 22, 2012, 10:30 PM EDT
- In force
- 57 min
- Issued by
- NWS Columbia, SC
County Lancaster County, SC
The radar
The Columbia radar (KCAE), 99 km from the middle of the area, began a volume at 01:33 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, 1.6 hours before the alert went out and 164 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
- 1004 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1300 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Columbia, SC wrote its last area forecast discussion before this special weather statement went out at May 22, 7:35 PM EDT, 1 hour 58 minutes earlier.
Area forecast discussion, May 22, 7:35 PM EDT, 1 hour 58 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE COLUMBIA SC 735 PM EDT TUE MAY 22 2012 .SYNOPSIS... UPPER LEVEL TROUGH WILL REMAIN ACROSS THE REGION THROUGH THURSDAY. THIS WILL PROVIDE A FOCUS FOR SCATTERED AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. HIGH PRESSURE WILL BEGIN BUILDING IN FRIDAY FOR THE WEEKEND WITH DRY WEATHER EXPECTED. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/... UPPER LEVEL TROUGH WILL REMAIN ACROSS THE REGION LATE THIS AFTERNOON AND TONIGHT. AIR MASS IS MODERATELY UNSTABLE WITH LI AROUND -5 AND SBCAPE AROUND 2000 J/KG. HOWEVER...MOISTURE APPEARS TO BE A LIMITING FACTOR FOR WIDESPREAD CONVECTION. PRECIPITABLE WATER 1.3-1.4 INCHES AND MESO ANALYSIS INDICATING DRY AIR ADVECTION AHEAD OF SHORT WAVE TROUGH. DEW POINTS ARE FALLING INTO THE 50S IN EAST CENTRAL GEORGIA AHEAD OF SHORT WAVE TROUGH. THINK MOST OF THE CONVECTION WILL BE ALONG THE COAST AND POSSIBLY PEE DEE REGION LATER THIS EVENING. SO HAVE CUT POPS BACK MOST AREAS. && .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH THURSDAY NIGHT/... UPPER TROUGH WITH COLD POOL ACROSS REGION BOTH WEDNESDAY AND THURSDAY...EXTENDING INTO THURSDAY EVENING AS WELL. DIURNAL IN NATURE WITH AFTERNOON HEATING INCREASING CAPES AND STEEPENING LAPSE RATES. AFTER SUNSET CONDITIONS BECOME MORE STABLE WITH THE LOSS OF DAYTIME HEATING. SPC HAS SEE TEXT FOR WEDNESDAY BUT CONDITIONS SIMILAR TO TODAY. AFTERNOON HIGH TEMPERATURES IN THE UPPER 80S BOTH WEDNESDAY AND THURSDAY SHOULD PROVIDE PLENTY OF ENERGY FOR CONVECTIVE DEVELOPMENT...HOWEVER MOISTURE LIMITED AND MOS POPS LOW. CUT POPS BACK TO SLIGHT CHANCE MOST AREAS. && .LONG TERM /FRIDAY THROUGH TUESDAY/... MEDIUM RANGE MODELS IN GOOD AGREEMENT THROUGH THE LONG TERM WITH THE UPPER LEVEL RIDGE DOMINATING THE REGION WITH WEAK HIGH PRESSURE AT THE SURFACE. INITIALLY DRY FRIDAY THROUGH THE WEEKEND WITH LIGHT EAST OR NORTHEAST SURFACE WINDS AND A FAIRLY STABLE ATMOSPHERE. SURFACE WINDS MORE SOUTHEAST BY MONDAY AND MORE MOISTURE SHOULD GIVE AT LEAST A SLIGHT CHANCE OF AFTERNOON AND EVENING CONVECTIVE ACTIVITY. QUITE WARM WITH HIGHS IN THE UPPER 80S TO AROUND THE 90 DEGREE MARK, OVERNIGHT LOWS IN THE MID TO UPPER 60S. && .AVIATION /00Z WEDNESDAY THROUGH SUNDAY/... CONVECTION ACROSS THE AREA REMAINS SCATTERED BUT NOT EXPECTING TERMINALS TO BE HEAVILY IMPACTED...ALTHOUGH SHOWERS ARE NEAR ALL BUT OGB. CONVECTION SHOULD DIMINISH BY 02Z WITH VFR CONDITIONS EXPECTED THROUGH THE OVERNIGHT HOURS UNTIL 08Z. MVFR VSBYS POSSIBLE 09Z-12Z. WITH THE UPPER LOW OVERHEAD ON WEDNESDAY EXPECT SCATTERED STORMS AGAIN BUT COVERAGE AND TIMING DIFFICULT TO FORECAST SO WILL NOT INCLUDE IN FORECAST. WINDS OUT OF THE SOUTHWEST AROUND 10 MPH AFTER 15Z. EXTENDED AVIATION OUTLOOK...MVFR CIG/VSBY POSSIBLE THURSDAY WITH AN APPROACHING COLD FRONT AND UPPER LOW PRESSURE SYSTEM. && .CAE WATCHES/WARNINGS/ADVISORIES... SC...NONE. GA...NONE. &&
Hazardous weather outlook, May 22, 4:41 AM EDT, 16 hours 52 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE COLUMBIA SC 441 AM EDT TUE MAY 22 2012 GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-230845- LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD- MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON- RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON- BAMBERG- 441 AM EDT TUE MAY 22 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. A STRONG UPPER-LEVEL SYSTEM WILL HELP SUPPORT THUNDERSTORMS TODAY AND TONIGHT. A FEW OF THE THUNDERSTORMS MAY CONTAIN DAMAGING WIND AND HAIL...MAINLY DURING THE LATE AFTERNOON AND EVENING HOURS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. THE UPPER-LEVEL SYSTEM WILL CONTINUE MOVING ACROSS THE REGION CREATING MORE SHOWERS AND THUNDERSTORMS WEDNESDAY AND WEDNESDAY NIGHT. SOME OF THESE THUNDERSTORMS COULD REACH SEVERE LIMITS WITH DAMAGING WIND BEING THE MAIN THREAT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY AND WEDNESDAY.
In the hours before
Special weather statement, May 22, 9:33 PM EDT, 0 minutes before
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</html>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.