Severe Thunderstorm Warning 141, NWS Greenville-Spartanburg, SC

811 
WWUS52 KGSP 012147
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
547 PM EDT SAT JUL 1 2017

SCC021-083-012215-
/O.CON.KGSP.SV.W.0141.000000T0000Z-170701T2215Z/
Spartanburg SC-Cherokee SC-
547 PM EDT SAT JUL 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHEASTERN SPARTANBURG AND WESTERN CHEROKEE COUNTIES...

At 546 PM EDT, a severe thunderstorm was located 6 miles west of
Gaffney, or near Cowpens, moving southeast at 25 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Minor hail damage to vehicles is expected. Expect wind 
         damage to trees and power lines. 

Locations impacted include...
Gaffney, Cowpens, Mayo, Cowpens National Battlefield, Thicketty and
Draytonville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Scattered trees and power lines will be blown down in the warned
area. Seek shelter inside an interior room.

This storm is producing frequent and intense lightning. Turn off
electrical appliances. Do not use corded telephones. Do not take a
bath or shower.

This storms is also producing extremely heavy rainfall. Flooding of
drainage ditches and low lying areas may occur. Small streams will
rise rapidly. Do not drive through areas where water is flowing over
the road.

Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg by calling toll free, 1, 800,
2 6 7, 8 1 0 1, or by posting on our Facebook page, or Tweet it using
hashtag nwsgsp. Your message should describe the event and the
specific location where it occurred.

&&

LAT...LON 3502 8192 3518 8180 3518 8167 3516 8156
      3491 8166 3500 8189
TIME...MOT...LOC 2146Z 305DEG 21KT 3505 8177 

HAIL...1.00IN
WIND...60MPH
 
$$

HG

770 
WWUS52 KGSP 012209
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
609 PM EDT SAT JUL 1 2017

SCC021-083-012219-
/O.EXP.KGSP.SV.W.0141.000000T0000Z-170701T2215Z/
Spartanburg SC-Cherokee SC-
609 PM EDT SAT JUL 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SPARTANBURG AND
WESTERN CHEROKEE COUNTIES WILL EXPIRE AT 615 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning will be allowed to expire.  However, gusty 
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3502 8192 3518 8180 3518 8167 3516 8156
      3491 8166 3500 8189
TIME...MOT...LOC 2209Z 305DEG 21KT 3497 8167 

$$

HG

Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
429 PM EDT Sat Jul 1 2017

.SYNOPSIS...
High pressure centered over the western Atlantic and a broad upper
level trough will continue over the eastern part of the nation into
the early part of the week.  A weak cold front lingers west to east
over our region Sunday into early week helping in the generation of
showers and storms. Another upper level disturbance will approach
our area later in the week enhancing the coverage of showers and
storms.

&&

.NEAR TERM /THROUGH SUNDAY/...
As of 420 PM EDT Saturday: Continuing to watch multiple rounds of
convection this afternoon, with the first being ongoing shra/tsra
along a diffuse sfc boundary across portions of the Upstate,
northward along I85 into CLT metro.  Said convection remains
rather robust thanks to ample heating and thus diurnally driven
cape upwards of 2-3k j/kg along and south of I85 per the SPC Meso.
With that, expecting further development over the next few hours
across the Upstate, with some strong/severe convection certainly
possible.  Meanwhile, another wave of convection continues to slide
east out of the TN Valley into portions of western NC and northeast
GA.  According to the SPC Meso, instability fields are much lower,
however still at levels supportive of deep convection with severe
storms not out of the question.  One additional threat regionwide
(however focused mainly across the western tier of the fcst area)
will be flash flooding as storm motions are rather weak, which
combined with robust rainfall and already decreased ffg values,
could result in isolated flooding concerns.  As for the fcst,
tweaked pops/t/td and sky to align with recent radar/obs/sat as
well as CAM guidance.

As of 2:10pm EDT Saturday:  Currently, some showers and
thunderstorms have fired only a weak surface boundary that
runs northeast to southwest along the foothills from Iredell to
Polk counties.  These storms are expected to move ENE through the
afternoon.  More storms are expected to enter western parts of the
CWA later this afternoon/evening as an upper level disturbance
moves eastward across the area.  An area of thunderstorms near
severe intensity currently exists in central Tennessee with this
wave, and these showers will continue eastward, reaching northeast
Georgia and western North Carolina by 6pm, with some earlier
showers popping up ahead of the main activity also possible.
There is some chance for severe outflows from any of these storms,
along with brief torrential rainfall and heavy lightning.

Clearing skies have allowed temperatures to warm to near or above
seasonal normals.  Moisture is still in place and this warming has
resulted in MLCAPE increasing to the highest levels seen this week
at 1500 to 2000 j/kg.  Shear is still weak, but with higher CAPE,
some strong outflows will be a risk this afternoon.

Following passage of shortwave, surface trough also moves eastward
and low-level winds veer to become more northwesterly.  This will
help to dry things a little bit with dewpoints on Sunday several
degrees below Saturday.  With reduced moisture, surface boundary
east of the area, and a lack of shortwave activity, POPs and
thunderstorm chances are much lower on Sunday. With less cloudy
and drier conditions on Sunday, highs will warm into the low 90s
in piedmont areas to mid 80s in the mountains.

&&

.SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/...
As of 230 PM EDT Saturday:  An interesting twist for this part of
the forecast cycle. It appears the suite of models are trying to
allow several short waves aloft, to zip across the southern edge of
the westerlies, and cross the Carolina's and northeast Georgia. This
would be from Monday into Tuesday.

These pockets of energy will interact with a moist and unstable
atmosphere, and potentially allow a couple episodes of greater
shower and thunderstorm coverage. Actually the NAM closes off an H7
and H85 center and drifts it through the region.

We will allow precipitation to wane Sunday night, but not shut off
completely. We will then follow the first short wave to enhance
showers and thunderstorms Monday into Monday night. Another downward
trend in POPS again late Monday night, as the energy moves
through, but not completely ending.

The second wave for Tuesday will increase shower and thunderstorm
coverage once again. Meanwhile throughout the two day period there
will be a surface convergence boundary, although weak, which could
focus the activity. However, at this time the small scale details
are rather nebulous.

Since we are forecasting more clouds and precipitation Monday and
Tuesday, we have lowered maximum temperatures a few degrees.
Otherwise continuity with the previous temperature forecast was
followed.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
As of 205 PM EDT Saturday: Starting Tuesday evening with the broad
upper trough over the East and ridge centered over the Four Corners.
The nearly closed off shortwave trough will be over Missouri Tuesday
evening and moving slowly toward our region.  The GFS has a well
defined low level circulation over the Upper Savannah River Valley
Tuesday night. The EC little low pressures over the Carolinas at
that time so looks a bit active to start this medium range.  The
Missouri shortwave crosses the Ohio Valley Wednesday with more
enhancement of convection for our region especially late Thursday.
CAPE values between 2500 and 3000 late Thursday with highest values
over NE GA and Upstate SC. Some shear will also help in generating
strong storms.  The models have a fairly deep trough over the East
Coast next weekend and a big ridge from the eastern Rockies north
into Canada.  The front that moves through Thursday night should
linger just south of our area through the weekend. So the scattered
convection hangs on.

Temperatures should remain near normal and maybe Max Temps just
below if the could cover is persistent.

&&

.AVIATION /21Z SATURDAY THROUGH THURSDAY/...
At KCLT and elsewhere: Currently some thunderstorms are firing along
a weak convergence boundary from north of KGSP to north of KCLT.
These showers will move ESE and increase in coverage through 0Z this
evening.  More showers and thunderstorms are expected to move into
the area after 21Z from the west associated with an upper level
disturbance.  These thunderstorms will be accompanied by divergent
outflows with highly variable and gusty winds.  Thunderstorms will
move east of the area and decline by midnight.  Some low clouds and
patchy fog are also possible Sunday morning, especially in
mountainous areas.  Overnight, surface winds will veer, becoming
more westerly to northwesterly as weak surface boundary moves out of
the area.  With somewhat dryer air, showers and clouds will be less
impactful on Sunday when conditions are expected to be VFR following
burn-off of any fog/low clouds.

Outlook: A moist and unsettled pattern will persist into early
next week, featuring mainly afternoon/evening SHRA/TSRA and areas
of nocturnal restrictions.

Confidence Table...

            20-02Z        02-08Z        08-14Z        14-18Z
KCLT       High 100%     Med   68%     High 100%     High 100%
KGSP       High 100%     High 100%     High 100%     High 100%
KAVL       High 100%     High 100%     High  83%     High 100%
KHKY       High 100%     High 100%     Med   75%     High 100%
KGMU       High 100%     High 100%     High 100%     High 100%
KAND       High 100%     High 100%     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 and ensemble forecasts
are available at the following link:

www.weather.gov/gsp/aviation

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.

&&

SYNOPSIS...DEO
NEAR TERM...CDG/WJM
SHORT TERM...TS
LONG TERM...DEO
AVIATION...WJM

Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
513 AM EDT Sat Jul 1 2017

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-020915-
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-
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-Chester-Greenwood-
513 AM EDT Sat Jul 1 2017

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

.DAY ONE...Today and Tonight.

A moist and unstable airmass will persist across the region today. By
the afternoon...strong and deep thunderstorms will develop capable
of producing heavy rainfall leading to possible localized flooding.
In addition...some of the stronger storms could generate damaging
wind gusts.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

..Sunday...No hazardous weather is expected at this time.
..Monday...No hazardous weather is expected at this time.
..Tuesday...No hazardous weather is expected at this time.
..Wednesday...No hazardous weather is expected at this time.
..Thursday...No hazardous weather is expected at this time.
..Friday...No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

Krentz

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
429 PM EDT SAT JUL 1 2017

NCZ069>071-012100-
Gaston NC-Lincoln NC-Mecklenburg NC-
429 PM EDT SAT JUL 1 2017

...STRONG THUNDERSTORMS WILL IMPACT SOUTHERN LINCOLN...WEST CENTRAL
MECKLENBURG AND GASTON COUNTIES UNTIL 500 PM EDT...

At 428 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from 5 miles east of Lincolnton to 13 miles northeast
of Shelby, and moving southeast at 20 mph.

Locations to be impacted include...
Gastonia, Lincolnton, Mt Holly, Cherryville, Bessemer City, Dallas,
Stanley, Lowell, Ranlo and High Shoals.

Wind gusts up to 40 mph, half inch 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.

&&

LAT...LON 3530 8085 3522 8127 3545 8145 3549 8113
TIME...MOT...LOC 2028Z 293DEG 19KT 3546 8115 3544 8138

HG

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
434 PM EDT SAT JUL 1 2017

NCZ035-036-056-012100-
Iredell NC-Alexander NC-Catawba NC-
434 PM EDT SAT JUL 1 2017

...A STRONG THUNDERSTORM WITH INTENSE LIGHTNING WILL IMPACT
NORTHEASTERN CATAWBA...EASTERN ALEXANDER AND CENTRAL IREDELL COUNTIES
UNTIL 500 PM EDT...

At 434 PM EDT, Doppler radar was tracking a strong thunderstorm with
intense lightning 5 miles southeast of Taylorsville, or near Stony
Point, moving southeast at 25 mph.

Locations to be impacted include...
Statesville, Taylorsville, Troutman, Stony Point, Lake Norman State
Park, Lookout Shoals Lake, Catawba, Lake Norman, Hiddenite and
Millersville.

In addition to intense lightning, wind gusts up to 45 mph, half inch
hail and very heavy rainfall rates up to 2 inches per hour will be
possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3582 8072 3580 8072 3560 8090 3584 8123
      3599 8111
TIME...MOT...LOC 2034Z 304DEG 23KT 3588 8110

HG

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
441 PM EDT SAT JUL 1 2017

NCZ508-510-SCZ007-012115-
Greater Rutherford NC-Eastern Polk NC-Spartanburg SC-
441 PM EDT SAT JUL 1 2017

...A STRONG THUNDERSTORM WITH INTENSE LIGHTNING WILL IMPACT
SOUTHEASTERN RUTHERFORD...POLK AND NORTH CENTRAL SPARTANBURG COUNTIES
UNTIL 515 PM EDT...

At 441 PM EDT, Doppler radar was tracking a strong thunderstorm with
intense lightning near Columbus, moving east at 25 mph.

Locations to be impacted include...
Columbus, Forest City, Tryon, Chesnee, Landrum, Mayo, Lake Bowen,
Mill Spring, Henrietta and Harris.

In addition to intense lightning, wind gusts up to 40 mph, half inch
hail and very heavy rainfall rates up to 2 inches per hour will be
possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3531 8177 3518 8182 3518 8187 3513 8185
      3505 8188 3519 8222 3520 8222 3520 8226
      3523 8227 3538 8220
TIME...MOT...LOC 2041Z 289DEG 23KT 3528 8216

HG

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
502 PM EDT SAT JUL 1 2017

NCZ036-037-056-057-069-071-012130-
Rowan NC-Davie NC-Iredell NC-Lincoln NC-Mecklenburg NC-Catawba NC-
502 PM EDT SAT JUL 1 2017

...STRONG THUNDERSTORMS WILL IMPACT EASTERN CATAWBA...SOUTHERN
DAVIE...IREDELL...NORTHEASTERN LINCOLN...NORTH CENTRAL MECKLENBURG
AND NORTHWESTERN ROWAN COUNTIES UNTIL 530 PM EDT...

At 501 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from 9 miles north of Statesville to 5 miles northeast
of Newton, and moving southeast at 25 mph.

Locations to be impacted include...
Statesville, Newton, Mocksville, Cornelius, Mooresville, Davidson,
Conover, Westport, Troutman and Claremont.

Wind gusts up to 40 mph and half inch 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.

&&

LAT...LON 3585 8042 3583 8043 3583 8046 3584 8048
      3583 8049 3581 8047 3579 8048 3578 8046
      3545 8091 3569 8126 3579 8113 3578 8111
      3580 8108 3584 8106 3599 8085 3585 8039
TIME...MOT...LOC 2101Z 300DEG 22KT 3592 8087 3572 8115

HG

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
525 PM EDT SAT JUL 1 2017

NCZ070-071-012200-
Gaston NC-Mecklenburg NC-
525 PM EDT SAT JUL 1 2017

...A STRONG THUNDERSTORM WITH INTENSE LIGHTNING WILL IMPACT SOUTHERN
MECKLENBURG AND SOUTHEASTERN GASTON COUNTIES UNTIL 600 PM EDT...

At 525 PM EDT, Doppler radar was tracking a strong thunderstorm with
intense lightning 8 miles west of Uptown Charlotte, or near Paw
Creek, moving southeast at 20 mph.

Locations to be impacted include...
Uptown Charlotte, Central Charlotte, Southwest Charlotte, East
Charlotte, Northwest Charlotte, Mt Holly, Belmont, Pineville,
Cramerton and Mcadenville.

In addition to intense lightning, wind gusts up to 40 mph, half inch
hail and very heavy rainfall rates up to 2 inches per hour will be
possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3502 8085 3504 8087 3511 8093 3510 8095
      3524 8112 3538 8099 3524 8066
TIME...MOT...LOC 2125Z 306DEG 16KT 3527 8099

HG

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
526 PM EDT SAT JUL 1 2017

NCZ071-082-012200-
Union NC-Mecklenburg NC-
526 PM EDT SAT JUL 1 2017

...A STRONG THUNDERSTORM WITH INTENSE LIGHTNING WILL IMPACT
SOUTHEASTERN MECKLENBURG AND CENTRAL UNION COUNTIES UNTIL 600 PM
EDT...

At 526 PM EDT, Doppler radar was tracking a strong thunderstorm with
intense lightning 10 miles northwest of Monroe, or near Hemby Bridge,
moving southeast at 10 mph.

Locations to be impacted include...
Monroe, Matthews, Mint Hill, Indian Trail, Stallings, Unionville,
Wesley Chapel, Lake Park, Hemby Bridge and Fairview In Union County.

In addition to intense lightning, wind gusts up to 40 mph, half inch
hail and very heavy rainfall rates up to 2 inches per hour will be
possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3507 8078 3522 8066 3513 8039 3490 8056
TIME...MOT...LOC 2126Z 301DEG 8KT 3511 8065

HG