Alert archive / South Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 252, NWS Greenville-Spartanburg, SC

July 28, 2017Greenwood County, Laurens County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 28, 2017, 2:56 PM EDT for Greenwood County, Laurens County, South Carolina. It was in force for 49 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 28, 2017, 2:56 PM EDT (18:56 UTC)
Expired
Jul 28, 2017, 3:45 PM EDT
In force
49 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Greenwood County, SC, Laurens County, SC

The radar

The Columbia radar (KCAE), 78 km from the middle of the area, began a volume at 18:58 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.

What was reported inside it

TimeReportWhereRemark
Jul 28, 2:58 PM EDTTSTM WND DMGNinety Six, SCA LARGE LIMB FELL ON A HOUSE.
Jul 28, 3:02 PM EDTTSTM WND DMGCross Hill, SCA LARGE TREE LIMB FELL BEHIND THE DOLLAR GENERAL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 2 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 6.9 hours before the alert went out and 230 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, Charleston AFB, SC at 12:00Z on 2017-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 536 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, Charleston AFB, SC at 12:00Z on 2017-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 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
536 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
753 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
-5 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

916 
WUUS52 KGSP 281856
SVRGSP
SCC047-059-281945-
/O.NEW.KGSP.SV.W.0252.170728T1856Z-170728T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
256 PM EDT FRI JUL 28 2017

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for...
  Southeastern Laurens County in Upstate South Carolina...
  Eastern Greenwood County in Upstate South Carolina...

* Until 345 PM EDT

* At 255 PM EDT, severe thunderstorms were located along a line
  extending from 7 miles southwest of Laurens to 13 miles southeast
  of Greenwood, moving east at 25 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to trees and power lines. 

* Locations impacted include...
  Clinton, Ninety Six, Joanna, Cross Hill, Waterloo, Lake Greenwood,
  Greenwood State Park, Ninety Six Historic Site, Coronaca and
  Mountville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

These storms are producing frequent and intense lightning. Turn off
electrical appliances. Do not use corded telephones. Do not take a
bath or shower.

These storms are 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 3398 8205 3398 8209 3445 8216 3455 8166
      3452 8165 3446 8170 3444 8173 3437 8178
      3430 8190 3424 8191 3420 8194 3418 8191
      3416 8191 3413 8187 3409 8192 3397 8201
      3395 8205
TIME...MOT...LOC 1855Z 252DEG 23KT 3440 8209 3403 8203 

HAIL...<.75IN
WIND...60MPH
 
$$

RWH
2 follow-up statements
163 
WWUS52 KGSP 281917
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
317 PM EDT FRI JUL 28 2017

SCC047-281927-
/O.CAN.KGSP.SV.W.0252.000000T0000Z-170728T1945Z/
Greenwood SC-
317 PM EDT FRI JUL 28 2017

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN GREENWOOD COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3424 8198 3425 8202 3449 8195 3455 8166
      3452 8165 3446 8170 3445 8172 3437 8178
      3435 8183 3430 8190 3424 8191 3420 8194
TIME...MOT...LOC 1917Z 252DEG 23KT 3444 8193 3407 8187 

$$

SCC059-281945-
/O.CON.KGSP.SV.W.0252.000000T0000Z-170728T1945Z/
Laurens SC-
317 PM EDT FRI JUL 28 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR SOUTHEASTERN LAURENS COUNTY...

At 317 PM EDT, severe thunderstorms were located along a line
extending from 6 miles southeast of Laurens to 17 miles southeast of
Greenwood, moving east at 25 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to trees and power lines. 

Locations impacted include...
Clinton, Joanna, Cross Hill, Mountville, Kinards and Lake Greenwood. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

These storms are producing frequent and intense lightning. Turn off
electrical appliances. Do not use corded telephones. Do not take a
bath or shower.

These storms are 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 3424 8198 3425 8202 3449 8195 3455 8166
      3452 8165 3446 8170 3445 8172 3437 8178
      3435 8183 3430 8190 3424 8191 3420 8194
TIME...MOT...LOC 1917Z 252DEG 23KT 3444 8193 3407 8187 

HAIL...<.75IN
WIND...60MPH
 
$$

RWH
662 
WWUS52 KGSP 281939
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
339 PM EDT FRI JUL 28 2017

SCC059-281949-
/O.EXP.KGSP.SV.W.0252.000000T0000Z-170728T1945Z/
Laurens SC-
339 PM EDT FRI JUL 28 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LAURENS COUNTY
WILL EXPIRE AT 345 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning will be allowed to expire.  However gusty winds
are still possible with these thunderstorms.

LAT...LON 3424 8198 3425 8202 3449 8195 3455 8166
      3452 8165 3446 8170 3445 8172 3437 8178
      3435 8183 3430 8190 3424 8191 3420 8194
TIME...MOT...LOC 1939Z 270DEG 23KT 3448 8180 3411 8174 

$$

RWH

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 28, 2:54 PM EDT, 2 minutes earlier.

Area forecast discussion, Jul 28, 2:54 PM EDT, 2 minutes before
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
254 PM EDT Fri Jul 28 2017

.SYNOPSIS...
A strong cold front will cross the region from the west through
tonight. Cooler and drier air will arrive across the western
Carolinas and northeast Georgia through the weekend and linger
through the early part of next week. More typical summertime
conditions will return about the middle of next week.

&&

.NEAR TERM /THROUGH SATURDAY/...
A line of strong to severe thunderstorms is taking shape across the
Upstate. A 44kt wind gust was observed by the KAND ASOS as the line
was taking shape across the upper Savannah River Valley. This is not
surprising considering the axis of 1000+ dCAPE depicted in
mesoanalysis across the area. Overall coverage and intensity of
convection is expected to increase as it moves into an area
characterized by 2500-3000 sbCAPE and upper support continues to
improve as height falls continue to overspread the area. Height
falls/tightening height gradient is expected to result in improving
shear throughout the afternoon, with 0-3km values likely reaching
20-25 kts by late afternoon. This will be adequate to support
continued clustering along cold pools, supporting a risk of
localized damaging winds, especially across the Piedmont.

A lull in convection of at least a couple of hours appears to be in
the offing late this afternoon/evening. However, we will have to
monitor convective trend across the TN Valley (ahead of the cold
front) this afternoon, as any activity developing that way could
find its way into our far western areas this evening. So far, the
air mass across East Tennessee is struggling to recover from the
morning showers that moved across that area. However, numerous,
albeit not especially strong showers and storms are developing at
the leading edge of an axis of 2000+ sbCAPE across west/middle
Tennessee. The more robust shear remains across the Ohio Valley, and
given the rather modest levels of instability, especially east of
the Cumberland Plateau, it doesn't appear likely that this
convection will be able to get its act together in much of an
organized form. Nevertheless, we will feature likely pops across the
mtns this evening, tapering to chances east of the Blue Ridge for
scattered to numerous showers and a few storms moving into our
western areas this evening.

With low level moisture remaining abundant, and mid/upper level
clearing, fog formation is possible late tonight, especially in
sheltered areas, where it could become locally dense. Deeper
moisture and wind shift associated with cold front is expected to
ooze to our southern areas, or just to our south by sunrise
Saturday. Token small pops will be maintained in these areas
through the day, as well as across the mtns (for a relatively moist
NW flow), and across the eastern zones (due to upper level thermal
trough developing in association with Mid-Atlantic upper low).
Otherwise, drier and stable air will preclude the need for pops
elsewhere, while lower thickness values will support max temps
slightly below climo.

&&

.SHORT TERM /SATURDAY NIGHT THROUGH MONDAY/...
As of 200 PM EDT Friday: A deep trough will extend southwest from a
closed low pressure system over the DelMarVa area through the
western Carolinas Saturday night through Sunday. Deeper moisture
will wrap southward around the back side of the system to contribute
some cloudiness to the northern tier, but any shower chances
Saturday night into early Sunday look rather low. Northerly cold
advection flow will maximize during this period with thicknesses
bottoming out across the region to produce min/max temps 1 to 2
categories below climo.

Meanwhile, at the surface sprawling high pressure will build from
the upper Midwest to the east coast and nose southward through the
western Carolinas and northeast Georgia through Monday. Modest
surface dewpoint recovery will begin in southwest sections by Monday
afternoon, but the potential for any southwest mountain ridge
diurnal convection looks quite limited.

&&

.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
As of 210 PM EDT Friday: The eastern trough will broaden in the
Tuesday to Friday timeframe as it gets reinforced by rounds of
digging shortwave energy arriving from Manitoba and Ontario. Under
the developing broad ridge, the airmass over the southeast will
continue to modify through the week with temperatures gradually
returning to normal. Diurnal convective coverage from terrain
forcing will increase each afternoon Tuesday through Thursday.
Deeper moisture will pool ahead of a cold front approaching from the
northwest on Friday to generate above climo PoPs.

&&

.AVIATION /19Z FRIDAY THROUGH WEDNESDAY/...
At KCLT and elsewhere: Showers and storms moving off the Blue Ridge
are expected to expand in coverage and intensity as they move east
across the area through late afternoon. Tempos for TSRA are included
at all terminals...beginning now at all sites except KCLT, and at
20Z at KCLT. Occl visby and/or cig restrictions are likely during
brief periods of heavy rain. Showers and storms are expected to
diminish in coverage from late afternoon into the early evening.
However, additional activity developing ahead of a cold front over
the TN Valley may then move into the area during mid/late evening.
VCSH and Prob30s therefore linger into the early part of the
overnight at all TAF sites. The concern then shifts to the potential
for fog and/or stratus late tonight, as low level moisture remains
plentiful, and mid/upper levels begin to dry. For the time being,
late night/early morning restrictions are confined to KAVL/KHKY, but
more widespread restrictions are certainly possible. SW winds may
gust at times this afternoon, diminishing to 5-10 kts by mid-evening
or so. Winds then shift to the NW at most terminals by mid-morning,
with speeds of 5-10 kts expected (10-15 kts and possibly gusty at
KAVL).

Outlook: Drier air will filter in from the north behind a passing
cold front this weekend. Chances for morning fog and stratus will
also be possible mainly in the mountain valleys. A typical
summer-time pattern is expected to return by the middle of next week.

Confidence Table...

            19-01Z        01-07Z        07-13Z        13-18Z
KCLT       High 100%     High  89%     High  91%     High 100%
KGSP       High 100%     High  99%     High  95%     High 100%
KAVL       High 100%     High  83%     Med   72%     High  90%
KHKY       High  90%     High  96%     Med   79%     High  96%
KGMU       High  98%     High  98%     High  94%     High 100%
KAND       High  97%     High  96%     Med   70%     High  98%

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...HG
NEAR TERM...JDL
SHORT TERM...HG
LONG TERM...HG
AVIATION...JDL
Hazardous weather outlook, Jul 28, 11:20 AM EDT, 3 hours 36 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
1120 AM EDT Fri Jul 28 2017

GAZ010-017-018-026-028-NCZ033-035-048>053-058-059-062>065-501>510-
SCZ001>006-010-291530-
Rabun-Habersham-Stephens-Franklin-Hart-Avery-Alexander-Madison-
Yancey-Mitchell-Swain-Haywood-Buncombe-Graham-Northern Jackson-Macon-
Southern Jackson-Transylvania-Henderson-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-Anderson-
1120 AM EDT Fri Jul 28 2017

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

.DAY ONE...This Afternoon and Tonight.

Numerous showers and thunderstorms will move across the area this
afternoon. The main thunderstorm threats will be from cloud to ground
lightning, locally heavy rainfall, and gusty winds. However, isolated
strong to severe thunderstorms producing brief damaging winds and
localized flash flooding cannot be ruled out.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

..Saturday...No hazardous weather is expected at this time.
..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.

.SPOTTER INFORMATION STATEMENT...

None.

GAZ029-NCZ036-037-056-057-068>072-082-SCZ007>009-011>014-019-291530-
Elbert-Iredell-Davie-Catawba-Rowan-Cleveland-Lincoln-Gaston-
Mecklenburg-Cabarrus-Union-Spartanburg-Cherokee-York-Abbeville-
Laurens-Chester-Greenwood-
1120 AM EDT Fri Jul 28 2017

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

.DAY ONE...This Afternoon and Tonight.

Scattered to numerous thunderstorms are expected across the Piedmont
this afternoon. A few storms could become severe, with damaging
winds being the primary threat. Cloud to ground lightning and locally
heavy rainfall can occur with any thunderstorm. In addition,
localized flash flooding cannot be ruled out, especially in urban
areas along the I-77 corridor.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

..Saturday...No hazardous weather is expected at this time.
..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.

.SPOTTER INFORMATION STATEMENT...

None.

LANE

In the hours before

Special weather statement, Jul 28, 2:09 PM EDT, 47 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
209 PM EDT FRI JUL 28 2017

NCZ508-510-281845-
Greater Rutherford NC-Eastern Polk NC-
209 PM EDT FRI JUL 28 2017

...A STRONG THUNDERSTORM WILL IMPACT SOUTHERN RUTHERFORD AND EASTERN
POLK COUNTIES UNTIL 245 PM EDT...

At 209 PM EDT, Doppler radar was tracking a strong thunderstorm 6
miles west of Rutherfordton, moving east at 20 mph.

Locations to be impacted include...
Forest City, Rutherfordton, Spindale, Ellenboro, Bostic, Cliffside,
Green Hill, Henrietta, Harris and Sunshine.

Wind gusts up to 40 mph and pea size hail will be possible in these
areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3535 8170 3521 8176 3524 8215 3542 8215
      3548 8170
TIME...MOT...LOC 1809Z 269DEG 19KT 3534 8207

CDG
Special weather statement, Jul 28, 2:23 PM EDT, 33 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
223 PM EDT FRI JUL 28 2017

SCZ011-012-019-281900-
Laurens SC-Abbeville SC-Greenwood SC-
223 PM EDT FRI JUL 28 2017

...A STRONG THUNDERSTORM WITH INTENSE LIGHTNING WILL IMPACT
SOUTHWESTERN LAURENS...NORTHEASTERN ABBEVILLE AND NORTHERN GREENWOOD
COUNTIES UNTIL 300 PM EDT...

At 223 PM EDT, Doppler radar was tracking a strong thunderstorm with
intense lightning 5 miles north of Abbeville, moving east at 35 mph.

Locations to be impacted include...
Greenwood, Abbeville, Ware Shoals, Ninety Six, Due West, Cross Hill,
Donalds, Cokesbury, Waterloo and Hodges.

In addition to intense lightning, wind gusts up to 40 mph and pea
size hail will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3436 8251 3442 8202 3423 8192 3421 8194
      3420 8194 3420 8193 3418 8192 3418 8191
      3417 8191 3414 8245
TIME...MOT...LOC 1823Z 261DEG 38KT 3425 8239

CDG
Special weather statement, Jul 28, 2:32 PM EDT, 24 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
232 PM EDT FRI JUL 28 2017

SCZ010-281900-
Anderson SC-
232 PM EDT FRI JUL 28 2017

...A STRONG THUNDERSTORM WITH INTENSE LIGHTNING WILL IMPACT
NORTHEASTERN ANDERSON COUNTY UNTIL 300 PM EDT...

At 232 PM EDT, Doppler radar was tracking a strong thunderstorm with
intense lightning 9 miles east of Clemson, or 6 miles north of
Northlake, moving east at 25 mph.

Locations to be impacted include...
Powdersville, Piedmont, Williamston, Northlake and West Pelzer.

In addition to intense lightning, wind gusts up to 40 mph will be
possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3470 8273 3477 8260 3480 8247 3478 8245
      3473 8247 3471 8246 3471 8247 3468 8246
      3466 8247 3466 8246 3462 8245 3460 8243
      3457 8242 3456 8269
TIME...MOT...LOC 1832Z 261DEG 23KT 3466 8265

CDG
Special weather statement, Jul 28, 2:33 PM EDT, 23 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
233 PM EDT FRI JUL 28 2017

NCZ068-504-506-508-281915-
Greater Rutherford NC-Cleveland NC-Greater Burke NC-
Eastern McDowell NC-
233 PM EDT FRI JUL 28 2017

...A STRONG THUNDERSTORM WITH INTENSE LIGHTNING WILL IMPACT
SOUTHEASTERN MCDOWELL...NORTHEASTERN RUTHERFORD...NORTH CENTRAL
CLEVELAND AND SOUTHWESTERN BURKE COUNTIES UNTIL 315 PM EDT...

At 233 PM EDT, Doppler radar was tracking a strong thunderstorm with
intense lightning 6 miles southeast of Marion, or 6 miles south of
Lake James State Park, moving east at 25 mph.

Locations to be impacted include...
Morganton, Valdese, Drexel, Glen Alpine, South Mountains State Park,
Lake Rhodhiss, Nebo, Pleasant Grove and Dysartsville.

In addition to intense lightning, wind gusts up to 40 mph will be
possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3578 8155 3560 8151 3556 8153 3555 8151
      3554 8151 3553 8194 3571 8197 3580 8157
TIME...MOT...LOC 1833Z 261DEG 23KT 3564 8190

CDG
Special weather statement, Jul 28, 2:36 PM EDT, 20 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
236 PM EDT FRI JUL 28 2017

SCZ002-003-005-006-281900-
Pickens Mountains SC-Greater Pickens SC-Greenville Mountains SC-
Greater Greenville SC-
236 PM EDT FRI JUL 28 2017

...STRONG THUNDERSTORMS WILL IMPACT NORTHERN GREENVILLE AND
NORTHEASTERN PICKENS COUNTIES UNTIL 300 PM EDT...

At 236 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from 15 miles south of Brevard to 5 miles northeast of
Pickens to 3 miles south of Easley, and moving northeast at 30 mph.

Locations to be impacted include...
Greenville Downtown, Easley, Pickens, West Greenville, Taylors,
Berea, Welcome, Travelers Rest, Slater-Marietta and Paris Mountain
State Park.

Wind gusts up to 50 mph will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3503 8278 3515 8256 3516 8255 3516 8253
      3517 8250 3504 8234 3486 8229 3480 8247
      3482 8249 3476 8262
TIME...MOT...LOC 1836Z 245DEG 28KT 3502 8274 3492 8263 3477 8259

CDG
Local storm report, Jul 28, 2:45 PM EDT, 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
245 PM EDT FRI JUL 28 2017

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

0210 PM     TSTM WND DMG     2 S ANDERSON            34.49N 82.64W
07/28/2017                   ANDERSON           SC   FIRE DEPT/RESCUE

            TREES AND POWER LINES DOWN ALONG EAST SHOCKLEY FERRY
            ROAD.

&&

HG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 28, 1:44 PM EDTSpecial Weather StatementGSPOconee46 min
Jul 28, 1:45 PM EDTSpecial Weather StatementGSPAnderson30 min
Jul 28, 1:56 PM EDTSpecial Weather StatementGSPAbbeville34 min
Jul 28, 2:07 PM EDTSevere Thunderstorm WarningGSPAbbeville, Anderson, Greenville, Laurens38 min
Jul 28, 2:23 PM EDTSpecial Weather StatementGSPAbbeville37 min
Jul 28, 2:32 PM EDTSpecial Weather StatementGSPAnderson28 min
Jul 28, 2:36 PM EDTSpecial Weather StatementGSPGreenville24 min
Jul 28, 2:43 PM EDTSevere Thunderstorm WarningGSPLaurens, Spartanburg47 min
Jul 28, 2:46 PM EDTSevere Thunderstorm WarningGSPAnderson, Greenville, Laurens, Pickens, Spartanburg44 min
Jul 28, 3:20 PM EDTSevere Thunderstorm WarningGSPCherokee, Laurens, Spartanburg, Union40 min
Jul 28, 3:55 PM EDTSevere Thunderstorm WarningGSPCherokee, Chester, Spartanburg, Union, York50 min
Jul 28, 4:22 PM EDTSevere Thunderstorm WarningGSPYork68 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2017Every severe thunderstorm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.