Alert archive / North Carolina / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 28, NWS Greenville-Spartanburg, SC

May 10, 2018Burke County, Catawba County, Lincoln County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 10, 2018, 3:55 PM EDT for Burke County, Catawba County, Lincoln County, North Carolina. It was in force for 50 min. 3 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
May 10, 2018, 3:55 PM EDT (19:55 UTC)
Expired
May 10, 2018, 4:45 PM EDT
In force
50 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Burke County, NC, Catawba County, NC, Lincoln County, NC

The radar

The Greer radar (KGSP), 109 km from the middle of the area, began a volume at 19:56 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
May 10, 4:08 PM EDTHAIL 14 Nw Cooksville, NCHAIL AT LEAST THE SIZE OF QUARTERS.
May 10, 4:15 PM EDTHAIL 11 N Cooksville, NCSPOTTER REPORTED UP TO 1 INCH HAIL NORTH OF COOKSVILLE, NC.
May 10, 4:35 PM EDTTSTM WND DMG1 S Valdese, NCINTERSTATE 40 CLOSED IN BOTH DIRECTIONS DUE TO POWERLINES DOWN AT EXIT 111.

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 3 storm reports to this severe thunderstorm warning; the first came 13 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.9 hours before the alert went out and 150 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 2018-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2018-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1686 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
150 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

595 
WUUS52 KGSP 101955
SVRGSP
NCC023-035-109-102045-
/O.NEW.KGSP.SV.W.0028.180510T1955Z-180510T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
355 PM EDT THU MAY 10 2018

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for...
  Southwestern Catawba County in the Piedmont of North Carolina...
  Western Lincoln County in the Piedmont of North Carolina...
  Southeastern Burke County in western North Carolina...

* Until 445 PM EDT.

* At 354 PM EDT, a severe thunderstorm was located 12 miles southeast
  of Morganton, or 7 miles east of South Mountains State Park, moving
  east 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...
  Hickory, Newton, Lincolnton, Conover, Longview, Valdese, Maiden,
  Icard, Hildebran and Connelly Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3578 8155 3578 8152 3576 8141 3576 8138
      3572 8112 3541 8126 3553 8151 3555 8151
      3556 8152 3557 8155 3556 8157 3562 8169
      3579 8157
TIME...MOT...LOC 1954Z 289DEG 23KT 3562 8153 

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

Carroll
2 follow-up statements
701 
WWUS52 KGSP 102015
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
415 PM EDT THU MAY 10 2018

NCC023-035-109-102045-
/O.CON.KGSP.SV.W.0028.000000T0000Z-180510T2045Z/
Catawba NC-Lincoln NC-Burke NC-
415 PM EDT THU MAY 10 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHWESTERN CATAWBA...WESTERN LINCOLN AND SOUTHEASTERN BURKE
COUNTIES...

At 414 PM EDT, a severe thunderstorm was located 10 miles northwest
of Lincolnton, or 7 miles south of Mountain View, moving east 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...
Hickory, Newton, Lincolnton, Conover, Longview, Valdese, Maiden,
Icard, Hildebran and Connelly Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3578 8155 3578 8152 3576 8141 3576 8138
      3572 8112 3541 8126 3553 8151 3555 8151
      3556 8152 3557 8155 3556 8157 3562 8169
      3579 8157
TIME...MOT...LOC 2014Z 289DEG 23KT 3558 8138 

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

Carroll
507 
WWUS52 KGSP 102042
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
442 PM EDT THU MAY 10 2018

NCC023-035-109-102052-
/O.EXP.KGSP.SV.W.0028.000000T0000Z-180510T2045Z/
Catawba NC-Lincoln NC-Burke NC-
442 PM EDT THU MAY 10 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CATAWBA...WESTERN
LINCOLN AND SOUTHEASTERN BURKE COUNTIES WILL EXPIRE AT 445 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 small hail
AND heavy rain are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
the Piedmont of North Carolina.

LAT...LON 3578 8155 3578 8152 3576 8141 3576 8138
      3572 8112 3541 8126 3553 8151 3555 8151
      3556 8152 3557 8155 3556 8157 3562 8169
      3579 8157
TIME...MOT...LOC 2042Z 289DEG 23KT 3553 8120 

$$

Carroll

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 May 10, 2:51 PM EDT, 1 hour 4 minutes earlier.

Area forecast discussion, May 10, 2:51 PM EDT, 1 hour 4 minutes before
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
251 PM EDT Thu May 10 2018

.SYNOPSIS...
Showers and thunderstorms continue through this evening as a cold
front crosses the area. Mainly mountain afternoon and evening
thunderstorms are expected Friday and Saturday. Temperatures will
increase to near record levels by Sunday then slowly cool through
next week. Precipitation chances gradually increase through next
week as a complex low pressure system impacts the area.

&&

.NEAR TERM /THROUGH FRIDAY/...
As of 225 PM: The latest convection-allow models have a band of
broken convection filling in rather quickly over the southern
Appalachians and adjacent foothills through 19Z. This is consistent
with the timing of a shortwave crossing the region aloft, and radar
trends are headed in that direction with stronger convection
starting to perk. Given model thermal profiles and morning raobs
exhibiting freezing levels in the 11.5 to 12.0 kft range across the
region, hail could become a factor with any 55+ dbZ cores touching
23 kft, or lower-level, higher reflectivity 60 to 65 dBZ cores in
the 17 to 20 kft range. We are still anticipating some wind
potential, with modest sfc to mid-level theta e lapses around 20K
this afternoon, but with a developing DCAPE pool near 1000 J/kg over
the southern tier and around the Charlotte area late day. The best
developing convective cold pool gusts should be across piedmont
areas around I-77 late this afternoon into the early evening, with a
secondary maximum over the southwest NC mountains this afternoon.

The main convection should exit east of the area by 00Z. Isolated
showers may continue to arrive in the northwest flow across the
southwest mountains through midnight before dissipating. Locations
receiving heavy rain this afternoon/evening, as well as the mountain
river valleys, could well see fog and low clouds toward daybreak
Friday. Mild mins should run 5 to 10 degrees above climo.

Flat mid-upper ridging will develop over the southeast on Friday,
but a very weak H5 trough embedded in the ridge could provide weak
afternoon forcing over the NC mountains. A weak lee trough should
develop just east of the Blue Ridge as well to toggle winds back
toward southwesterly. Anticipate max temps warming at least a couple
of degrees above Thursday values, with isolated to scattered diurnal
convection focused mainly along the eastern slopes of the
mountains.

&&

.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/...
As of 215 PM EDT Thursday: Weak upper shortwave will be passing
across the area, embedded in the flow atop the Gulf/Caribbean upper
ridge, at the beginning of the period. Any lingering convection from
Friday night should dissipate quickly on the back side of the wave.
For Saturday afternoon, continued mid-level warming with the upper
ridge in place and a weak surface trough in place should continue
the low-level WAA, resulting in afternoon highs a couple of degrees
warmer than what we'll see on Friday, with just about everywhere
across the Piedmont progged to reach the 90-degree mark. Without
upper support, convection will be limited to just the airmass
instability and mechanical lift from the mountains, so have dropped
most of the pops from the Piedmont. Thicknesses will increase
further still on Sunday as a broad upper trough remains in place
over E Canada and ridging amplifies over the center of the country.
The big story here will be the record-level highs; currently have a
record forecast for CLT, which will break a record that has been in
place for 137 years! Luckily dewpoints won't be ridiculous, so, so
far, no real concerns with heat indices. Very little change in low
temps through the period (actually, through the extended,
too...maybe fluctuating by 5 degrees through the end of next week).
Mid-level warming/subsidence will continue to increase, and this
will significantly limit convective potential even over the
mountains, with only some pockets of slight chance pops forecast at
this time.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
As of 230 PM EDT Thursday: Still no major changes to the extended
from previous forecasts. With the subtropical ridge continuing in
place, Monday should be very similar to Sunday, maybe a degree or
two cooler, and with slightly more convection especially over the
mountains, but cannot rule out isolated activity over the Piedmont
as well.

Things start changing as we move into Tuesday and through the rest
of the period. A tropical weakness in the Gulf will strengthen just
slightly on Sunday, spinning near the FL Big Bend on Monday and
beginning to drift north into the Southeast Monday night and
Tuesday. Increasing cloud cover and precip chances will be expected,
and a corresponding decrease in afternoon highs (still above normal
though). From Tuesday through the end of the period, it looks fairly
wet...though QPF amounts aren't particularly impressive, low-level
moisture will remain high and thus higher pops are warranted, with
the best chances Wednesday afternoon where we have likely pops
painted across the area. Airmass instability will remain but lapse
rates in the tropical environment unimpressive, so some question as
to how much showery vs. thundery activity there will be. A shortwave
trough pushing toward the OH Valley at the end of the period will
slowly absorb the tropical low, but the tropical moisture feed from
the western Caribbean will continue so chance pops remain in the
forecast, with highs remaining 3-5 degrees above normal.

&&

.AVIATION /19Z THURSDAY THROUGH TUESDAY/...
At KCLT and Elsewhere: There is reasonably good consensus on the
foothills convection developing into a broken line across the NC
piedmont late this afternoon and impacting KCLT mainly from 21Z to
23Z. Reasonably good cold pool winds of 25 to 30 kt should be
expected from the WNW, and gusts could reach quite a bit higher if
the convective strength builds into the stronger piedmont DCAPE
area. Convection should be a bit spottier elsewhere, with KHKY to
KAVL seeing the next best chance, but more scattered activity across
the Upstate terminal area. Will handle with mainly a VCTS in
southern sections. Any restrictions through the evening hours will
be brief MVFR to possibly IFR under the heaviest downpours.

Any locations that receive rain late today will be a candidate for
fog/stratus development toward daybreak Friday. Chances appear best
at KCLT and also in the mountain river valleys. Will remain fairly
conservative for now given the reserved MOS forecasts, but will
definitely hint that way at KCLT with some morning SCT007 along with
MVFR fog. Convective coverage should be quite a bit less on Friday,
with no mention before 18Z throughout, and nothing after 18Z at
KCLT. Winds will toggle back to SW with lee troughing early Friday,
except mainly NW at KAVL.

Outlook: Isolated to scattered diurnal convection will likely return
mainly over the higher terrain on Friday afternoon and into the
weekend. Any restrictions should be confined to areas under
showers/thunderstorms or daybreak fog/stratus in the lower mountain
valleys.

Confidence Table...

            19-01Z        01-07Z        07-13Z        13-18Z
KCLT       High 100%     High 100%     Low   50%     High  82%
KGSP       High 100%     High 100%     High 100%     High 100%
KAVL       High 100%     High 100%     Med   67%     High  91%
KHKY       High 100%     High 100%     High 100%     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

&&

.CLIMATE...

RECORDS FOR 05-11

               MAX TEMPERATURE         MIN TEMPERATURE
  STATION      HIGH        LOW         HIGH        LOW
  -------  ----------  ----------  ----------  ----------
   KAVL      89 1889     50 1960     64 1890     30 1966
   KCLT      95 1916     58 1924     70 1889     39 1977
                1896
                1889
   KGSP      96 1889     59 1924     69 1963     33 1906

RECORDS FOR 05-12

               MAX TEMPERATURE         MIN TEMPERATURE
  STATION      HIGH        LOW         HIGH        LOW
  -------  ----------  ----------  ----------  ----------
   KAVL      88 1980     44 1960     65 1918     36 1969
                1956
                1914
   KCLT      94 1889     56 1960     69 1896     39 1969
   KGSP      99 1916     56 1960     68 1979     38 1989
                                        1933
RECORDS FOR 05-13

               MAX TEMPERATURE         MIN TEMPERATURE
  STATION      HIGH        LOW         HIGH        LOW
  -------  ----------  ----------  ----------  ----------
   KAVL      90 1933     54 1917     67 1890     31 1895
   KCLT      93 1881     59 1891     73 1881     38 1960
   KGSP      95 1886     62 1972     71 1933     37 1917
                            1954
                            1938

&&

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

&&

SYNOPSIS...RWH
NEAR TERM...HG
SHORT TERM...TDP
LONG TERM...TDP
AVIATION...HG
CLIMATE...
Hazardous weather outlook, May 10, 11:07 AM EDT, 4 hours 48 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
1107 AM EDT Thu May 10 2018

GAZ010-017-018-NCZ033-035>037-048>053-056>059-062>065-068>072-082-
501>510-SCZ001>009-013-014-111515-
Rabun-Habersham-Stephens-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-Chester-
1107 AM EDT Thu May 10 2018

This Hazardous Weather Outlook is for the northeast Georgia
mountains, western North Carolina, and the northern Upstate of
South Carolina.

.DAY ONE...This Afternoon and Tonight.

Scattered to numerous thunderstorms are expected to develop ahead of
a cold front approaching from the west this afternoon. These storms
are expected to strengthen over the mountains this afternoon, with
some of the thunderstorms becoming severe over the foothills and
especially the piedmont late this afternoon through early this
evening. Cloud-to-ground lighting, briefly heavy rainfall, and gusty
winds can be expected with any of these storms. Some of the strongest
thunderstorms will be capable of producing quarter-sized hail and
damaging wind gusts. The storms should move away to the east by
around sunset.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

.SPOTTER INFORMATION STATEMENT...

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

GAZ026-028-029-SCZ010>012-019-111515-
Franklin-Hart-Elbert-Anderson-Abbeville-Laurens-Greenwood-
1107 AM EDT Thu May 10 2018

This Hazardous Weather Outlook is for the northeast Georgia piedmont
and the southern part of Upstate South Carolina.

.DAY ONE...This Afternoon and Tonight.

Scattered thunderstorms are expected to develop ahead of a cold
front approaching from the west this afternoon. Cloud-to-ground
lighting, briefly heavy rainfall, and gusty winds can be expected
with any of these storms. One or two of the thunderstorms may become
strong enough to produce large hail and damaging wind gusts. The
storms should move away to the east by around sunset.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

.SPOTTER INFORMATION STATEMENT...

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

HG

In the hours before

Special weather statement, May 10, 3:33 PM EDT, 22 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
333 PM EDT THU MAY 10 2018

NCZ053-102015-
Buncombe NC-
333 PM EDT THU MAY 10 2018

...A STRONG THUNDERSTORM WILL IMPACT CENTRAL BUNCOMBE COUNTY UNTIL
415 PM EDT...

At 332 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Downtown Asheville, or over Weaverville, moving east
at 25 mph.

Locations to be impacted include...
Downtown Asheville, East Asheville, North Asheville, Black Mountain,
Woodfin, Swannanoa, Weaverville, UNC Asheville, B.R. Parkway-East
Asheville To Craggy Gardens and Warren Wilson College.

Wind gusts up to 50 mph and dime size hail will be possible in these
areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3577 8234 3575 8233 3571 8228 3568 8229
      3567 8228 3565 8229 3562 8227 3559 8229
      3556 8226 3553 8217 3552 8223 3549 8223
      3561 8266 3576 8262 3579 8254
TIME...MOT...LOC 1932Z 283DEG 20KT 3570 8255

TDP
Special weather statement, May 10, 3:35 PM EDT, 20 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
335 PM EDT THU MAY 10 2018

NCZ065-509-510-SCZ003-007-102000-
Henderson NC-Polk Mountains NC-Eastern Polk NC-
Greenville Mountains SC-Spartanburg SC-
335 PM EDT THU MAY 10 2018

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN HENDERSON...
SOUTHWESTERN POLK...NORTHEASTERN GREENVILLE AND NORTHWESTERN
SPARTANBURG COUNTIES UNTIL 400 PM EDT...

At 335 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles southwest of Columbus, or near Saluda, moving east at 25 mph.

Locations to be impacted include...
Landrum, Tryon, Campobello, Saluda, Lake Bowen, Gowensville, North
Saluda Reservoir and Glassy Mountain.

Wind gusts up to 50 mph and dime size hail will be possible in these
areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3516 8243 3528 8238 3519 8206 3505 8212
TIME...MOT...LOC 1935Z 290DEG 23KT 3520 8231

Carroll
Special weather statement, May 10, 3:46 PM EDT, 9 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
346 PM EDT THU MAY 10 2018

GAZ010-017-018-SCZ001-004-102015-
Rabun GA-Stephens GA-Habersham GA-Greater Oconee SC-
Oconee Mountains SC-
346 PM EDT THU MAY 10 2018

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN STEPHENS...EAST CENTRAL
HABERSHAM...SOUTH CENTRAL RABUN AND SOUTHWESTERN OCONEE COUNTIES
UNTIL 415 PM EDT...

At 346 PM EDT, Doppler radar was tracking a strong thunderstorm 10
miles west of Walhalla, or 7 miles east of Tallulah Gorge State Park,
moving east at 20 mph.

Locations to be impacted include...
Walhalla, Toccoa, Westminster, Tallulah Falls, Tallulah Gorge State
Park and Long Creek.

Wind gusts up to 50 mph and dime size hail will be possible in these
areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3460 8340 3481 8338 3483 8304 3455 8307
TIME...MOT...LOC 1946Z 276DEG 17KT 3472 8324

Carroll
Local storm report, May 10, 3:49 PM EDT, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
349 PM EDT THU MAY 10 2018

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

0345 PM     HAIL             4 E COLUMBUS            35.25N 82.13W
05/10/2018  E0.75 INCH       POLK               NC   NWS EMPLOYEE

            PENNY SIZED HAIL. VERY LITTLE WIND AT THIS LOCATION.

&&

OUTLAW
Special weather statement, May 10, 3:50 PM EDT, 5 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
350 PM EDT THU MAY 10 2018

NCZ051-052-059-102015-
Haywood NC-Swain NC-Northern Jackson NC-
350 PM EDT THU MAY 10 2018

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN JACKSON...EAST
CENTRAL SWAIN AND SOUTHERN HAYWOOD COUNTIES UNTIL 415 PM EDT...

At 350 PM EDT, Doppler radar was tracking a strong thunderstorm 4
miles west of Waynesville, or near Balsam, moving east at 25 mph.

Locations to be impacted include...
Waynesville, Lake Junaluska, Maggie Valley, Balsam, B.R.
Parkway-Smoky Mountains To Balsam Gap, B.R. Parkway-Balsam Gap To
Black Balsam Area, Smoky Mountains-Balsam Mountain, Cherokee, Black
Balsam Area and Sunburst.

Wind gusts up to 50 mph and dime size hail will be possible in these
areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Dime to nickel size hail can cause considerable damage to vehicles.
Consider moving vehicles to a covered storage area before the storm
arrives.

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.

&&

LAT...LON 3548 8332 3558 8318 3550 8280 3529 8294
TIME...MOT...LOC 1950Z 289DEG 23KT 3546 8308

Carroll
Local storm report, May 10, 3:53 PM EDT, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
353 PM EDT THU MAY 10 2018

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

0342 PM     HAIL             MILL SPRING             35.30N 82.16W
05/10/2018  E1.00 INCH       POLK               NC   EMERGENCY MNGR

            QUARTER SIZED SIZED HAIL.

0342 PM     TSTM WND DMG     MILL SPRING             35.30N 82.16W
05/10/2018                   POLK               NC   EMERGENCY MNGR

            SEVERAL TREES BLOWN DOWN.

&&

OUTLAW

The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 1:33 PM EDTSpecial Weather StatementGSPBurke27 min
May 10, 1:58 PM EDTSpecial Weather StatementGSPBurke32 min
May 10, 2:09 PM EDTSpecial Weather StatementGSPAvery, Mitchell36 min
May 10, 2:15 PM EDTSevere Thunderstorm WarningGSPPolk, Rutherford45 min
May 10, 2:27 PM EDTSpecial Weather StatementGSPBurke33 min
May 10, 2:42 PM EDTSpecial Weather StatementGSPHenderson33 min
May 10, 2:52 PM EDTSevere Thunderstorm WarningGSPPolk23 min
May 10, 2:56 PM EDTSpecial Weather StatementGSPAvery, Mitchell34 min
May 10, 3:00 PM EDTSpecial Weather StatementGSPGraham30 min
May 10, 3:04 PM EDTSpecial Weather StatementGSPBurke26 min
May 10, 3:13 PM EDTSevere Thunderstorm WarningGSPPolk, Rutherford47 min
May 10, 3:28 PM EDTSpecial Weather StatementGSPBurke47 min
May 10, 3:33 PM EDTSpecial Weather StatementGSPGraham, Swain42 min
May 10, 3:35 PM EDTSpecial Weather StatementGSPPolk25 min
May 10, 3:50 PM EDTSpecial Weather StatementGSPHaywood25 min
May 10, 3:58 PM EDTSevere Thunderstorm WarningGSPPolk, Rutherford47 min
May 10, 4:07 PM EDTSpecial Weather StatementGSPJackson38 min
May 10, 4:12 PM EDTSpecial Weather StatementGSPBurke33 min
May 10, 4:18 PM EDTSpecial Weather StatementGSPAlexander, Iredell42 min
May 10, 4:31 PM EDTSevere Thunderstorm WarningGSPAlexander, Iredell44 min
May 10, 4:46 PM EDTSevere Thunderstorm WarningGSPHenderson, Polk, Rutherford44 min
May 10, 4:54 PM EDTSpecial Weather StatementGSPCatawba36 min
May 10, 5:07 PM EDTSpecial Weather StatementGSPPolk23 min
May 10, 5:12 PM EDTSevere Thunderstorm WarningGSPPolk48 min
May 10, 5:15 PM EDTSevere Thunderstorm WarningGSPDavie, Iredell, Rowan45 min
May 10, 5:19 PM EDTSpecial Weather StatementGSPPolk86 min
May 10, 5:19 PM EDTSevere Thunderstorm WarningGSPCleveland, Rutherford41 min
May 10, 5:39 PM EDTSpecial Weather StatementGSPCabarrus51 min
May 10, 6:00 PM EDTSpecial Weather StatementGSPDavie, Rowan30 min
May 10, 6:02 PM EDTSpecial Weather StatementGSPCleveland43 min
May 10, 7:20 PM EDTSpecial Weather StatementGSPUnion25 min
May 10, 7:42 PM EDTSpecial Weather StatementGSPUnion33 min
May 10, 7:49 PM EDTSevere Thunderstorm WarningGSPUnion26 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2018Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.