Severe Thunderstorm Warning 52, NWS Greenville-Spartanburg, SC

Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
345 AM EDT Mon Apr 13 2020

.SYNOPSIS...
Drier air will make it's way into the region later today in the wake
of a strong cold front.  A wave of low pressure moving along the
stationary front located just south of our region will bring a
chance of precipitation back to the area late Tuesday and early
Wednesday.

&&

.NEAR TERM /THROUGH TONIGHT/...
As of 345 AM EDT Monday: A Tornado Watch and Flood Watch remain in
effect for portions of the FA attm, along with a Wind Advisory.

The anticipated line of convection continues to push it's way into
the FA this morning ahead of a cold front, with strong to severe
thunderstorms (some indicating low level rotation) across the
western portions, allowing for the issuance of warnings. This event
continues to be a high shear, low CAPE event. The primary threat
through the morning hours will be damaging straightline winds and a
few tornadoes, though with notable DCAPE, could not entirely rule
out a downburst. Flooding concerns are ongoing as well, with an
additional one inch of rain possible through this morning, one to
two inches across the upslope areas. Expect this activity to push
eastward over the next few hours as the front pushes gradually
through the area.

Late morning/early afternoon, behind the front, expect conditions to
quickly improve with sfc high pressure gradually building in from
the west and broad upper troughing encompassing the entire CONUS. As
clouds dissipate, expect gusty SW winds through the afternoon,
becoming light into the evening as they continue to veer to the WNW.
Thus, the Wind Advisory for a majority of the area will remain in
effect through this afternoon. Max temperatures will climb above
normal today as min temperatures tonight drop to around normal.

&&

.SHORT TERM /TUESDAY THROUGH WEDNESDAY/...
As of 130 AM EDT Monday: It still looks like we will creep our way
back into unsettled wx as weak llvl upglide develops on Tuesday
featuring weak sfc ridging nosing in and the sfc flow veering to
easterly.  Tuesday's sensible wx should wind up generally quiet
though, some increase in cloudiness later in the day and max temps
near the mid-April normal.  Within the broad sw aloft, upper heights
will continue to slowly fall though Tuesday night as broad and
channel vort energy encroaches. Within the improving llvl upglide
flow, shower cvrg may become numerous where the lift and moisture is
maximized, across the piedmont.  85h flow is progged to veer to the
NW on Wednesday resulting in downglide drying, the lingering shower
threat ending and diminishing cloud cover.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
As of 230 AM EDT Monday: The 00z medium range model suite shows
quasi-zonal flow aloft is still progged to be atop the region to
start off the period.  After a chilly and potentially frosty morning
on Thursday, expect sunshine to warm temperatures to about 5 deg F
below normal.  It remains to be seen on how much moisture returns
ahead of the northern stream baroclinic zone to result an any shower
threat, but at this point token small or slight chance mtn pops is
still OK, as maximum temperatures bump back to the mid-April normal.
Westerly flow and drying conditions should on through Saturday. Mid
to high level moisture may sneak back into the picture from the west
Sunday, with a return of late day shower PoPs.

&&

.AVIATION /08Z MONDAY THROUGH FRIDAY/...
At KCLT and Elsewhere: A mixture of MVFR/IFR prevails at all TAF
sites this morning, as showers and thunderstorms continue to push
into the area from the west. Through the morning hours, expect this
activity to bring periods of +RA and strong to severe +TSRA, along
with reduced vsbys and LIFR cigs, ahead of the approaching cold
front. South-southeast winds AOB 20 kts with higher gusts (30 to 35
kts) are expected through this morning ahead of the front. However,
will note periods of westerly winds will be possible with
convection, as noted by TEMPO groups. Behind the front, expect
conditions to improve from west to east, with convection tapering
off and cigs improving as clouds scatter out. With conditions
improving to VFR, expect winds to veer to the SW, with gusts
subsiding this afternoon.

Outlook: Potential for rain and flight restrictions Tuesday night
into Wednesday. Otherwise expect VFR.

Confidence Table...

            07-13Z        13-19Z        19-01Z        01-06Z
KCLT       Med   78%     High  93%     High 100%     High 100%
KGSP       High  84%     High  96%     High 100%     High 100%
KAVL       High  81%     High  95%     High  97%     High  95%
KHKY       High  87%     High  88%     High 100%     High 100%
KGMU       Med   75%     High  93%     High 100%     High 100%
KAND       High  84%     High  98%     High 100%     High 100%

The percentage reflects the number of guidance members agreeing
with the scheduled TAF issuance flight rule category. Complete hourly
experimental aviation forecast consistency tables are available at
the following link:

www.weather.gov/gsp/aviation

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...Flash Flood Watch until 8 AM EDT this morning for GAZ010-017.
     Wind Advisory until 4 PM EDT this afternoon for GAZ018-026-028-
     029.
NC...Flash Flood Watch until 8 AM EDT this morning for NCZ033-
     048>053-058-059-062>065-501-503-505-507-509.
     Wind Advisory until 4 PM EDT this afternoon for NCZ033-035>037-
     048>053-056>059-062>065-068>072-082-501>510.
SC...Flash Flood Watch until 8 AM EDT this morning for SCZ001>003.
     Wind Advisory until 4 PM EDT this afternoon for SCZ003>014-019.

&&

SYNOPSIS...CSH
NEAR TERM...12
SHORT TERM...CSH
LONG TERM...CSH
AVIATION...12

Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
157 AM EDT Mon Apr 13 2020

GAZ018-026-028-029-NCZ035>037-056-057-068>072-082-502-504-506-508-
510-SCZ004>014-019-140600-
Stephens-Franklin-Hart-Elbert-Alexander-Iredell-Davie-Catawba-Rowan-
Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-Union NC-
Greater Caldwell-Greater Burke-Eastern McDowell-Greater Rutherford-
Eastern Polk-Greater Oconee-Greater Pickens-Greater Greenville-
Spartanburg-Cherokee-York-Anderson-Abbeville-Laurens-Union SC-
Chester-Greenwood-
157 AM EDT Mon Apr 13 2020

...WIND ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...TORNADO WATCH 116 IN EFFECT UNTIL 8 AM EDT THIS MORNING...

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

.DAY ONE...Tonight.

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

   Tornado Watch.
   Wind Advisory.

Flash flooding may also develop in areas that see multiple rounds of
heavy rainfall.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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

   Tornado Watch.
   Wind Advisory.

.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.

GAZ010-017-SCZ001-002-140600-
Rabun-Habersham-Oconee Mountains-Pickens Mountains-
157 AM EDT Mon Apr 13 2020

...FLASH FLOOD WATCH IN EFFECT UNTIL 8 AM EDT THIS MORNING...
...TORNADO WATCH 116 IN EFFECT UNTIL 8 AM EDT THIS MORNING...

This Hazardous Weather Outlook is for northeast Georgia and upstate
South Carolina.

.DAY ONE...Tonight.

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

   Tornado Watch.
   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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

   Tornado Watch.
   Flash Flood Watch.

.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.

NCZ051-052-058-140600-
Swain-Haywood-Graham-
157 AM EDT Mon Apr 13 2020

...WIND ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...FLASH FLOOD WATCH IN EFFECT UNTIL 8 AM EDT THIS MORNING...
...TORNADO WATCH 113 IN EFFECT UNTIL 2 AM EDT EARLY THIS MORNING...

This Hazardous Weather Outlook is for western North Carolina.

.DAY ONE...Tonight.

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

   Tornado Watch.
   Flash Flood Watch.
   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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

   Flash Flood Watch.
   Wind Advisory.

.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.

NCZ033-048>050-053-140600-
Avery-Madison-Yancey-Mitchell-Buncombe-
157 AM EDT Mon Apr 13 2020

...WIND ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...FLASH FLOOD WATCH IN EFFECT UNTIL 8 AM EDT THIS MORNING...

This Hazardous Weather Outlook is for western North Carolina.

.DAY ONE...Tonight.

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

   Flash Flood Watch.
   Wind Advisory.

A line of showers and embedded strong to severe thunderstorms will
move into the area from the west. This activity will pose a threat of
damaging winds and perhaps an isolated tornado as it moves across
the area through daybreak.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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

   Flash Flood Watch.
   Wind Advisory.

.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.

NCZ059-062>065-501-503-505-507-509-SCZ003-140600-
Northern Jackson-Macon-Southern Jackson-Transylvania-Henderson-
Caldwell Mountains-Burke Mountains-McDowell Mountains-
Rutherford Mountains-Polk Mountains-Greenville Mountains-
157 AM EDT Mon Apr 13 2020

...WIND ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...FLASH FLOOD WATCH IN EFFECT UNTIL 8 AM EDT THIS MORNING...
...TORNADO WATCH 116 IN EFFECT UNTIL 8 AM EDT THIS MORNING...

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

.DAY ONE...Tonight.

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

   Tornado Watch.
   Flash Flood Watch.
   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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

   Tornado Watch.
   Flash Flood Watch.
   Wind Advisory.

.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.

12

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
336 AM EDT MON APR 13 2020

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

0320 AM     TSTM WND DMG     5 NNW WHITWORTH         34.55N 83.13W
04/13/2020                   STEPHENS           GA   AMATEUR RADIO

            TREE REPORTED DOWN ON A HOUSE ALONG CENTURY DRIVE.

&&

CSH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
342 AM EDT MON APR 13 2020

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

0334 AM     TSTM WND DMG     SENECA                  34.69N 82.96W
04/13/2020                   OCONEE             SC   AMATEUR RADIO

            TREES DOWNED AND STRUCTURAL DAMAGE AROUND SENECA.

&&

CSH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
345 AM EDT MON APR 13 2020

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

0320 AM     TSTM WND DMG     TOCCOA                  34.58N 83.32W
04/13/2020                   STEPHENS           GA   AMATEUR RADIO

            TREES DOWNED AROUND THE CITY OF TOCCOA, AND OUTSIDE OF
            TOWN ALONG HIGHWAYS 123 AND 328.

&&

CSH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
400 AM EDT MON APR 13 2020

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

0340 AM     TSTM WND DMG     PICKENS                 34.88N 82.71W
04/13/2020                   PICKENS            SC   AMATEUR RADIO

            TREES DOWN AROUND GREATER PICKENS.

&&

CSH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
440 AM EDT MON APR 13 2020

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

0345 AM     TSTM WND DMG     2 W EASLEY              34.83N 82.63W
04/13/2020                   PICKENS            SC   AMATEUR RADIO

            TREES DOWN ALONG BOXWOOD LANE

&&

CSH

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