Alert archive / North Carolina / Special Weather Statements in 2018

Special Weather Statement, NWS Greenville-Spartanburg, SC

August 6, 2018Cabarrus County, Mecklenburg County, North Carolina; Cherokee County, York County, South Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 6, 2018, 5:45 PM EDT for Cabarrus County, Mecklenburg County, North Carolina; Cherokee County, York County, South Carolina. It was in force for 30 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, 2018, 5:45 PM EDT (21:45 UTC)
Expired
Aug 6, 2018, 6:15 PM EDT
In force
30 min
Issued by
NWS Greenville-Spartanburg, SC

Counties Cabarrus County, NC, Mecklenburg County, NC, Cherokee County, SC, York County, SC

The radar

The Greer radar (KGSP), 99 km from the middle of the area, began a volume at 21:45 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, 9.8 hours before the alert went out and 161 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 2018-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 874 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 2018-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
874 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
1356 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Aug 6, 5:32 PM EDT, 13 minutes earlier.

Area forecast discussion, Aug 6, 5:32 PM EDT, 13 minutes before
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Hazardous weather outlook, Aug 6, 4:40 PM EDT, 1 hour 5 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
440 PM EDT Mon Aug 6 2018

NCZ033-048>053-058-059-062>065-501-503-505-507-509-071200-
Avery-Madison-Yancey-Mitchell-Swain-Haywood-Buncombe-Graham-
Northern Jackson-Macon-Southern Jackson-Transylvania-Henderson-
Caldwell Mountains-Burke Mountains-McDowell Mountains-
Rutherford Mountains-Polk Mountains-
440 PM EDT Mon Aug 6 2018

This Hazardous Weather Outlook is for western North Carolina.

.DAY ONE...Tonight.

Scattered to numerous showers and thunderstorms will continue into
the evening before diminishing overnight. The primary impacts from
the storms will be cloud-to-ground lightning, torrential rain and
gusty or potentially damaging winds.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

This period will include periodic bouts of thunderstorms. The
coverage will be maximized during the afternoon and evening.
Primary impacts include cloud-to-ground lightning, heavy rain and
gusty winds.

.SPOTTER INFORMATION STATEMENT...

Spotters are requested to forward any reports of large hail,
damaging winds, or flash flooding to our office.

GAZ010-017-018-026-028-029-NCZ035>037-056-057-068>072-082-502-504-
506-508-510-SCZ001>014-019-071200-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Alexander-Iredell-
Davie-Catawba-Rowan-Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-
Union-Greater Caldwell-Greater Burke-Eastern McDowell-
Greater Rutherford-Eastern Polk-Oconee Mountains-Pickens Mountains-
Greenville Mountains-Greater Oconee-Greater Pickens-
Greater Greenville-Spartanburg-Cherokee-York-Anderson-Abbeville-
Laurens-Chester-Greenwood-
440 PM EDT Mon Aug 6 2018

This Hazardous Weather Outlook is for northeast Georgia, piedmont
North Carolina, western North Carolina and upstate South Carolina.

.DAY ONE...Tonight.

Scattered to numerous showers and thunderstorms will continue into
the evening before diminishing overnight. The primary impacts from
the storms will be cloud-to-ground lightning, torrential rain and
gusty or potentially damaging winds.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

This period will include periodic bouts of thunderstorms. The
coverage will be maximized during the afternoon and evening. Primary
impacts include cloud-to-ground lightning, heavy rain and gusty
winds.

Additionally, heat index values will range from 95 to 100 degrees
during the afternoon hours on Tuesday and Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotters are requested to forward any reports of large hail, damaging
winds, or flash flooding to our office.

In the hours before

Local storm report, Aug 6, 4:40 PM EDT, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
440 PM EDT MON AUG 6 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0352 PM     TSTM WND DMG     1 SE SALEM              34.88N 82.96W
08/06/2018                   OCONEE             SC   911 CALL CENTER

            REPORT OF POWER LINE DOWN ON SUNRISE DRIVE. TIME
            ESTIMATED BY RADAR.

&&

LACORTE
Special weather statement, Aug 6, 4:42 PM EDT, 1 hour 3 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
442 PM EDT MON AUG 6 2018

NCZ036-069>071-062115-
Gaston NC-Iredell NC-Lincoln NC-Mecklenburg NC-
442 PM EDT MON AUG 6 2018

...A STRONG THUNDERSTORM WITH INTENSE LIGHTNING WILL IMPACT EASTERN
LINCOLN...SOUTH CENTRAL IREDELL...NORTHWESTERN MECKLENBURG AND
NORTHEASTERN GASTON COUNTIES UNTIL 515 PM EDT...

At 442 PM EDT, Doppler radar was tracking a strong thunderstorm with
intense lightning 11 miles northwest of Huntersville, or near
Westport, moving southeast at 10 mph.

Locations to be impacted include...
Huntersville, Cornelius, Davidson, Westport, Lake Norman, Denver,
Ramsey Creek Park, Lowesville and Lucia.

In addition to intense lightning, wind gusts up to 50 mph, pea size
hail and very heavy rainfall rates up to 2 inches per hour will be
possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.

Torrential rainfall may flood areas with poor drainage, such as
ditches and underpasses. Avoid these areas and do not cross flooded
roads. Water levels of small streams may also rise rapidly. Seek
higher ground if threatened by flood waters.

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. Do not take a shower or bath. Try to unplug unnecessary
appliances before the storm approaches.

This storm may intensify, so 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.

Lake Norman is in the path of this storm. Cloud to ground lightning
and gusty winds will create dangerous boating conditions.
Move to shore immediately.

&&

LAT...LON 3551 8077 3551 8078 3549 8079 3548 8078
      3530 8091 3545 8114 3555 8107 3555 8095
      3557 8096 3559 8095 3553 8075
TIME...MOT...LOC 2042Z 298DEG 8KT 3550 8101

RWH
Special weather statement, Aug 6, 5:09 PM EDT, 36 minutes before
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Local storm report, Aug 6, 5:19 PM EDT, 26 minutes before
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Local storm report, Aug 6, 5:35 PM EDT, 10 minutes before
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Special weather statement, Aug 6, 5:45 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 1:32 PM EDTSpecial Weather StatementGSPBurke28 min
Aug 6, 1:34 PM EDTSpecial Weather StatementGSPHaywood56 min
Aug 6, 1:40 PM EDTSpecial Weather StatementGSPTransylvania65 min
Aug 6, 1:43 PM EDTSpecial Weather StatementGSPAlexander, Caldwell62 min
Aug 6, 1:51 PM EDTSevere Thunderstorm WarningGSPAlexander, Caldwell54 min
Aug 6, 2:46 PM EDTSpecial Weather StatementGSPHenderson29 min
Aug 6, 2:50 PM EDTSpecial Weather StatementGSPAlexander25 min
Aug 6, 3:31 PM EDTSevere Thunderstorm WarningGSPJackson44 min
Aug 6, 3:35 PM EDTSpecial Weather StatementGSPIredell25 min
Aug 6, 3:39 PM EDTSpecial Weather StatementGSPCatawba36 min
Aug 6, 3:53 PM EDTSpecial Weather StatementGSPPolk37 min
Aug 6, 3:55 PM EDTSevere Thunderstorm WarningGSPTransylvania50 min
Aug 6, 4:17 PM EDTSpecial Weather StatementGSPLincoln28 min
Aug 6, 4:25 PM EDTSpecial Weather StatementGSPMecklenburg35 min
Aug 6, 4:42 PM EDTSpecial Weather StatementGSPMecklenburg33 min
Aug 6, 5:09 PM EDTSpecial Weather StatementGSPCabarrus, Gaston, Mecklenburg36 min
Aug 6, 6:02 PM EDTSpecial Weather StatementGSPCleveland28 min
Aug 6, 6:11 PM EDTSpecial Weather StatementGSPUnion34 min
Aug 6, 6:19 PM EDTAreal Flood AdvisoryGSPCabarrus, Gaston, Mecklenburg, Union116 min
Aug 6, 3:16 PM EDTSpecial Weather StatementGSPGreenville29 min
Aug 6, 3:33 PM EDTSevere Thunderstorm WarningGSPOconee42 min
Aug 6, 4:26 PM EDTSpecial Weather StatementGSPOconee34 min
Aug 6, 4:51 PM EDTSevere Thunderstorm WarningGSPAnderson, Oconee, Pickens39 min
Aug 6, 5:02 PM EDTSevere Thunderstorm WarningGSPGreenville, Laurens43 min
Aug 6, 5:17 PM EDTSevere Thunderstorm WarningGSPSpartanburg, Union43 min
Aug 6, 5:29 PM EDTSevere Thunderstorm WarningGSPAbbeville, Anderson, Greenville, Oconee46 min
Aug 6, 6:07 PM EDTSevere Thunderstorm WarningGSPCherokee, Chester, Union, York38 min
Aug 6, 6:43 PM EDTSpecial Weather StatementGSPChester32 min
Aug 6, 6:53 PM EDTSevere Thunderstorm WarningGSPChester, Union52 min

Nearby

Special Weather Statements in North Carolina, 2018Special Weather Statements in South Carolina, 2018Every special weather statement in 2018

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.