Alert archive / North Carolina / Special Weather Statements in 2020

Special Weather Statement, NWS Greenville-Spartanburg, SC

July 21, 2020Transylvania County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Jul 21, 2020, 1:21 PM EDT for Transylvania County, North Carolina. It was in force for 24 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 21, 2020, 1:21 PM EDT (17:21 UTC)
Expired
Jul 21, 2020, 1:45 PM EDT
In force
24 min
Issued by
NWS Greenville-Spartanburg, SC

County Transylvania County, NC

The radar

The Greer radar (KGSP), 77 km from the middle of the area, began a volume at 17:22 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 5.4 hours before the alert went out and 258 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, Peachtre/Fal Fld, GA at 12:00Z on 2020-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 503 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, Peachtre/Fal Fld, GA at 12:00Z on 2020-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -46 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
503 J/kg
Mixed-layer CIN
-111 J/kg
Mixed-layer LCL
1197 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-46 m²/s²
0-3 km storm-relative helicity
-10 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 Jul 21, 10:49 AM EDT, 2 hours 32 minutes earlier.

Area forecast discussion, Jul 21, 10:49 AM EDT, 2 hours 32 minutes before
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Hazardous weather outlook, Jul 21, 10:59 AM EDT, 2 hours 22 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
1059 AM EDT Tue Jul 21 2020

GAZ010-017-018-026-028-029-NCZ033-035-048>053-056-058-059-062>065-
068>070-501>510-SCZ001>008-010>013-019-221500-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Avery-Alexander-
Madison-Yancey-Mitchell-Swain-Haywood-Buncombe-Catawba-Graham-
Northern Jackson-Macon-Southern Jackson-Transylvania-Henderson-
Cleveland-Lincoln-Gaston-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-Anderson-Abbeville-Laurens-Union SC-Greenwood-
1059 AM EDT Tue Jul 21 2020

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

.DAY ONE...Today and tonight.

Scattered showers and thunderstorms are expected this afternoon and
evening. Some storms will be severe with damaging wind the main
threat. Slow moving or training of storms may also cause isolated
flooding.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

NCZ036-037-057-071-072-082-SCZ009-014-221500-
Iredell-Davie-Rowan-Mecklenburg-Cabarrus-Union NC-York-Chester-
1059 AM EDT Tue Jul 21 2020

...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for piedmont North Carolina and
upstate South Carolina.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Heat Advisory.

Scattered showers and thunderstorms are expected this afternoon and
evening. Some storms will be severe with damaging wind the main
threat. Slow moving or training of storms may also cause isolated
flooding.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Hot and humid conditions will continue at least into Wednesday with
afternoon heat index values of 100 to 105 possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

Krentz

In the hours before

Special weather statement, Jul 21, 1:04 PM EDT, 17 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
104 PM EDT Tue Jul 21 2020

NCZ052-211730-
Haywood NC-
104 PM EDT Tue Jul 21 2020

...A STRONG THUNDERSTORM WITH INTENSE LIGHTNING WILL IMPACT
NORTHWESTERN HAYWOOD COUNTY UNTIL 130 PM EDT...

At 104 PM EDT, Doppler radar was tracking a strong thunderstorm with
intense lightning 12 miles northwest of Waynesville, or near Smoky
Mountains-Cataloochee. This storm was nearly stationary.

Locations to be impacted include...
Waynesville, Maggie Valley, Smoky Mountains-Cataloochee, Lake
Junaluska, Smoky Mountains-Balsam Mountain, Smoky Mountains-Big
Creek, Cove Creek and Fines Creek.

In addition to intense lightning, wind gusts up to 50 mph and pea
size hail 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.

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.

&&

LAT...LON 3573 8292 3547 8300 3554 8316 3556 8316
      3558 8317 3560 8319 3561 8318 3563 8318
      3564 8320 3567 8318 3567 8319 3574 8317
TIME...MOT...LOC 1704Z 285DEG 3KT 3564 8312

RWH
Special weather statement, Jul 21, 1:21 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
121 PM EDT Tue Jul 21 2020

NCZ052-063-064-211745-
Transylvania NC-Haywood NC-Southern Jackson NC-
121 PM EDT Tue Jul 21 2020

...A STRONG THUNDERSTORM WITH INTENSE LIGHTNING WILL IMPACT CENTRAL
TRANSYLVANIA...EAST CENTRAL JACKSON AND SOUTHEASTERN HAYWOOD COUNTIES
UNTIL 145 PM EDT...

At 121 PM EDT, Doppler radar was tracking a strong thunderstorm with
intense lightning 9 miles west of Brevard, or 4 miles south of Black
Balsam Area. This storm was nearly stationary.

Locations to be impacted include...
Brevard, Rosman, Graveyard Fields, Looking Glass, Black Balsam Area,
B.R. Parkway-Black Balsam To Mount Pisgah, B.R. Parkway-Balsam Gap To
Black Balsam Area, Balsam Grove, Wolf Mountain and Connestee.

In addition to intense lightning, wind gusts up to 50 mph and pea
size hail 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.

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.

&&

LAT...LON 3528 8297 3529 8292 3530 8293 3531 8295
      3532 8296 3537 8294 3536 8269 3510 8278
      3519 8300
TIME...MOT...LOC 1721Z 285DEG 3KT 3527 8289

RWH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 8:22 PM EDTSpecial Weather StatementGSPJackson38 min
Jul 21, 1:04 PM EDTSpecial Weather StatementGSPHaywood26 min
Jul 21, 1:43 PM EDTSevere Thunderstorm WarningGSPJackson47 min
Jul 21, 1:52 PM EDTSevere Thunderstorm WarningGSPBuncombe, Haywood38 min
Jul 21, 2:14 PM EDTSpecial Weather StatementGSPTransylvania31 min
Jul 21, 2:32 PM EDTSpecial Weather StatementGSPJackson28 min
Jul 21, 2:34 PM EDTSevere Thunderstorm WarningGSPHaywood, Jackson41 min
Jul 21, 2:40 PM EDTSevere Thunderstorm WarningGSPHenderson50 min
Jul 21, 2:52 PM EDTHeat AdvisoryGSPCabarrus, Davie, Iredell, Mecklenburg, Rowan, Union29 hr
Jul 21, 2:59 PM EDTSevere Thunderstorm WarningGSPBuncombe, Henderson, Polk, Rutherford31 min
Jul 21, 3:08 PM EDTSpecial Weather StatementGSPAvery37 min
Jul 21, 3:16 PM EDTSpecial Weather StatementGSPYancey29 min
Jul 21, 3:31 PM EDTSpecial Weather StatementGSPPolk29 min
Jul 21, 3:44 PM EDTSevere Thunderstorm WarningGSPAvery, McDowell, Mitchell, Yancey31 min
Jul 21, 3:46 PM EDTSpecial Weather StatementGSPCaldwell29 min
Jul 21, 4:03 PM EDTSpecial Weather StatementGSPLincoln27 min
Jul 21, 4:09 PM EDTSevere Thunderstorm WarningGSPAvery, Burke, Caldwell, McDowell51 min
Jul 21, 4:32 PM EDTSpecial Weather StatementGSPRutherford28 min
Jul 21, 4:40 PM EDTSevere Thunderstorm WarningGSPCleveland, Rutherford50 min
Jul 21, 4:51 PM EDTSpecial Weather StatementGSPCabarrus24 min
Jul 21, 4:56 PM EDTSevere Thunderstorm WarningGSPBurke, Caldwell49 min
Jul 21, 5:00 PM EDTSpecial Weather StatementGSPMecklenburg30 min
Jul 21, 5:23 PM EDTSevere Thunderstorm WarningGSPIredell, Rowan38 min
Jul 21, 5:28 PM EDTSpecial Weather StatementGSPCabarrus32 min
Jul 21, 5:31 PM EDTSpecial Weather StatementGSPGaston, Lincoln29 min
Jul 21, 5:36 PM EDTSpecial Weather StatementGSPCleveland24 min
Jul 21, 5:42 PM EDTSevere Thunderstorm WarningGSPMecklenburg33 min
Jul 21, 5:54 PM EDTSevere Thunderstorm WarningGSPCabarrus51 min
Jul 21, 5:56 PM EDTSevere Thunderstorm WarningGSPAlexander, Burke, Caldwell, Catawba38 min
Jul 21, 6:03 PM EDTSevere Thunderstorm WarningGSPGaston, Lincoln, Mecklenburg29 min
Jul 21, 6:30 PM EDTSpecial Weather StatementGSPCatawba, Lincoln30 min
Jul 21, 6:33 PM EDTSpecial Weather StatementGSPLincoln27 min
Jul 21, 6:59 PM EDTSpecial Weather StatementGSPCatawba31 min
Jul 21, 7:04 PM EDTSevere Thunderstorm WarningGSPGaston, Mecklenburg41 min
Jul 21, 7:39 PM EDTSpecial Weather StatementGSPCabarrus36 min
Jul 21, 7:45 PM EDTSpecial Weather StatementGSPMecklenburg30 min
Jul 21, 2:29 PM EDTSpecial Weather StatementGSPPickens31 min
Jul 21, 2:54 PM EDTSpecial Weather StatementGSPOconee36 min
Jul 21, 3:04 PM EDTSpecial Weather StatementGSPPickens26 min
Jul 21, 3:06 PM EDTSpecial Weather StatementGSPAbbeville24 min
Jul 21, 3:29 PM EDTSpecial Weather StatementGSPGreenville, Oconee, Pickens31 min
Jul 21, 3:40 PM EDTSevere Thunderstorm WarningGSPGreenville35 min
Jul 21, 3:50 PM EDTSevere Thunderstorm WarningGSPGreenville25 min
Jul 21, 3:59 PM EDTSpecial Weather StatementGSPSpartanburg31 min
Jul 21, 4:11 PM EDTSpecial Weather StatementGSPPickens34 min
Jul 21, 4:15 PM EDTSevere Thunderstorm WarningGSPAnderson, Greenville, Pickens45 min
Jul 21, 4:18 PM EDTSpecial Weather StatementGSPAbbeville, Greenwood27 min
Jul 21, 4:29 PM EDTSevere Thunderstorm WarningGSPGreenville, Spartanburg46 min
Jul 21, 4:36 PM EDTSevere Thunderstorm WarningGSPAbbeville, Greenwood, Laurens39 min
Jul 21, 4:43 PM EDTSpecial Weather StatementGSPAnderson32 min
Jul 21, 5:05 PM EDTSpecial Weather StatementGSPSpartanburg25 min
Jul 21, 5:07 PM EDTSpecial Weather StatementGSPCherokee23 min
Jul 21, 5:17 PM EDTSpecial Weather StatementGSPLaurens28 min
Jul 21, 5:38 PM EDTSpecial Weather StatementGSPCherokee37 min
Jul 21, 5:40 PM EDTSpecial Weather StatementGSPUnion35 min
Jul 21, 5:47 PM EDTSpecial Weather StatementGSPLaurens28 min
Jul 21, 5:50 PM EDTSpecial Weather StatementGSPYork25 min
Jul 21, 5:59 PM EDTSevere Thunderstorm WarningGSPYork46 min
Jul 21, 6:16 PM EDTSpecial Weather StatementGSPUnion29 min
Jul 21, 6:46 PM EDTSpecial Weather StatementGSPYork29 min
Jul 21, 6:48 PM EDTSpecial Weather StatementGSPYork27 min
Jul 21, 7:41 PM EDTSpecial Weather StatementGSPChester34 min
Jul 21, 2:25 PM EDTSpecial Weather StatementGSPElbert35 min
Jul 21, 2:43 PM EDTSpecial Weather StatementGSPHabersham32 min
Jul 21, 3:55 PM EDTSpecial Weather StatementGSPFranklin, Hart, Stephens35 min

Nearby

Special Weather Statements in North Carolina, 2020Every special weather statement in 2020

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.