Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Greenville-Spartanburg, SC

July 18, 201210 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Jul 18, 2012, 1:09 PM EDT for 10 counties in North Carolina. It was in force for 36 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
Jul 18, 2012, 1:09 PM EDT (17:09 UTC)
Expired
Jul 18, 2012, 1:45 PM EDT
In force
36 min
Issued by
NWS Greenville-Spartanburg, SC

Counties Avery County, NC, Buncombe County, NC, Graham County, NC, Haywood County, NC, Jackson County, NC, Macon County, NC, Madison County, NC, Mitchell County, NC, Swain County, NC, Yancey County, NC

The radar

The Knoxville radar (KMRX), 63 km from the middle of the area, began a volume at 17:10 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, 5.2 hours before the alert went out and 280 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, Greensboro/Hi Pt, NC at 12:00Z on 2012-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1738 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, Greensboro/Hi Pt, NC at 12:00Z on 2012-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 square meters per square second.1939Sfc1 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
1738 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
1050 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
-4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Jul 18, 10:10 AM EDT, 2 hours 59 minutes earlier.

Area forecast discussion, Jul 18, 10:10 AM EDT, 2 hours 59 minutes before
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Hazardous weather outlook, Jul 18, 5:33 AM EDT, 7 hours 36 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
533 AM EDT WED JUL 18 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-190945-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-
IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-
ROWAN-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-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-
533 AM EDT WED JUL 18 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT
NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

SCATTERED TO NUMEROUS SLOW MOVING THUNDERSTORMS WILL DEVELOP OVER
THE REGION AGAIN TODAY. A FEW OF THE THUNDERSTORMS WILL PRODUCE
SMALL AREAS OF WIND DAMAGE AND HAIL UP TO THE SIZE OF QUARTERS.
LOCALLY VERY HEAVY RAINFALL IS ALSO POSSIBLE WITH THE STRONGER
STORMS AND FLOODING OF POOR DRAINAGE AREAS MAY DEVELOP. MANY OF
THE STORMS WILL PRODUCE FREQUENT CLOUD TO GROUND LIGHTING THIS
AFTERNOON.

THE EFFECTS OF HEAVY RAIN AND SATURATED SOILS WILL ENHANCE THE
THREAT OF TREES FALLING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

14

In the hours before

Special weather statement, Jul 18, 1:09 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
109 PM EDT WED JUL 18 2012

NCZ033-048>053-058-059-062>065-501>505-181745-
AVERY-BUNCOMBE-BURKE MOUNTAINS-CALDWELL MOUNTAINS-GRAHAM-GREATER
BURKE-GREATER CALDWELL-HAYWOOD-HENDERSON-MACON-MADISON-MCDOWELL
MOUNTAINS-MITCHELL-NORTHERN JACKSON-SOUTHERN
JACKSON-SWAIN-TRANSYLVANIA-YANCEY-
109 PM EDT WED JUL 18 2012

...THUNDERSTORMS ARE DEVELOPING OVER THE MOUNTAINS AND FOOTHILLS OF
NORTH CAROLINA...

AT 100 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SCATTERED THUNDERSTORMS WERE DEVELOPING OVER THE MOUNTAINS AND
FOOTHILLS
OF NORTH CAROLINA. PEA SIZE HAIL WAS REPORTED NEAR CANTON JUST
BEFORE 1:00 PM. ADDITIONAL OCCURRENCES OF SMALL HAIL... ALONG WITH
GUSTY WINDS... ARE EXPECTED DURING THE AFTERNOON.

THE THUNDERSTORMS WILL ALSO PRODUCE LIGHTNING AND LOCALLY HEAVY. THE
THUNDERSTORMS WILL MOVE VERY SLOWLY... HIGH WATER LEVELS ARE
POSSIBLE IN POOR DRAINAGE AREAS.

LAT...LON 3546 8397 3557 8374 3557 8349 3577 8315
      3578 8299 3594 8291 3593 8281 3607 8264
      3596 8256 3617 8222 3611 8208 3629 8192
      3612 8181 3612 8171 3591 8159 3499 8346
      3516 8374 3525 8371 3522 8392 3528 8404

LGL

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 18, 12:42 PM EDTAreal Flood AdvisoryGSPHaywood, Swain78 min
Jul 18, 1:24 PM EDTSevere Thunderstorm WarningGSPYancey34 min
Jul 18, 1:51 PM EDTSpecial Weather StatementGSPAvery24 min
Jul 18, 2:07 PM EDTSpecial Weather StatementGSPHenderson38 min
Jul 18, 2:16 PM EDTAreal Flood AdvisoryGSPBurke, Caldwell104 min
Jul 18, 2:23 PM EDTSevere Thunderstorm WarningGSPHaywood, Henderson, Transylvania37 min
Jul 18, 2:45 PM EDTSpecial Weather StatementGSPMcDowell45 min
Jul 18, 2:46 PM EDTSpecial Weather StatementGSPMcDowell44 min
Jul 18, 3:04 PM EDTSpecial Weather StatementGSPTransylvania26 min
Jul 18, 3:15 PM EDTSpecial Weather StatementGSPMcDowell30 min
Jul 18, 3:24 PM EDTSpecial Weather StatementGSPHenderson36 min
Jul 18, 3:27 PM EDTSevere Thunderstorm WarningGSPMcDowell, Rutherford46 min
Jul 18, 3:30 PM EDTSpecial Weather StatementGSPAlexander45 min
Jul 18, 3:39 PM EDTSevere Thunderstorm WarningGSPAlexander, Burke, Caldwell, Catawba36 min
Jul 18, 3:53 PM EDTSevere Thunderstorm WarningGSPHenderson, Polk67 min
Jul 18, 4:04 PM EDTSpecial Weather StatementGSPMadison41 min
Jul 18, 4:49 PM EDTSpecial Weather StatementGSPUnion41 min
Jul 18, 5:14 PM EDTSevere Thunderstorm WarningGSPGaston, Lincoln, Mecklenburg12 min
Jul 18, 5:16 PM EDTSevere Thunderstorm WarningGSPGaston39 min
Jul 18, 5:20 PM EDTSpecial Weather StatementGSPCabarrus, Rowan25 min
Jul 18, 5:37 PM EDTSevere Thunderstorm WarningGSPCabarrus, Mecklenburg, Rowan53 min
Jul 18, 5:40 PM EDTSevere Thunderstorm WarningGSPGaston, Mecklenburg44 min
Jul 18, 5:53 PM EDTFlash Flood WarningGSPCabarrus, Rowan2 hr
Jul 18, 6:29 PM EDTSevere Thunderstorm WarningGSPCabarrus, Rowan50 min
Jul 17, 8:32 PM EDTSpecial Weather StatementGSPAnderson28 min
Jul 18, 3:12 PM EDTSpecial Weather StatementGSPSpartanburg48 min
Jul 18, 3:20 PM EDTSevere Thunderstorm WarningGSPSpartanburg55 min
Jul 18, 3:36 PM EDTSpecial Weather StatementGSPPickens24 min
Jul 18, 4:08 PM EDTSevere Thunderstorm WarningGSPOconee53 min
Jul 18, 4:11 PM EDTSpecial Weather StatementGSPChester49 min
Jul 18, 4:25 PM EDTSpecial Weather StatementGSPGreenwood35 min
Jul 18, 4:28 PM EDTSpecial Weather StatementGSPCherokee47 min
Jul 18, 4:48 PM EDTSpecial Weather StatementGSPGreenville42 min
Jul 18, 4:52 PM EDTSpecial Weather StatementGSPUnion38 min
Jul 18, 4:57 PM EDTSpecial Weather StatementGSPLaurens48 min
Jul 18, 5:05 PM EDTSpecial Weather StatementGSPAbbeville25 min
Jul 18, 5:08 PM EDTSevere Thunderstorm WarningGSPUnion48 min
Jul 18, 5:23 PM EDTSpecial Weather StatementGSPAnderson37 min
Jul 18, 5:32 PM EDTSevere Thunderstorm WarningGSPAbbeville, Anderson, Greenville58 min
Jul 18, 5:50 PM EDTSpecial Weather StatementGSPLaurens, Union25 min
Jul 18, 6:10 PM EDTSpecial Weather StatementGSPAnderson50 min
Jul 18, 4:03 PM EDTSpecial Weather StatementGSPRabun27 min
Jul 18, 4:35 PM EDTSpecial Weather StatementGSPHabersham25 min

Nearby

Special Weather Statements in North 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.