North Carolina, 2015

Damaging Winds in North Carolina, July 20, 2015

July 20, 2015 · NWS GSP · 5 events in 5 counties and zones

Widely scattered thunderstorms developed across western North Carolina during the afternoon and evening. A couple of the storms produced brief damaging winds.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
5

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS GSP wrote it up.

Widely scattered thunderstorms developed across western North Carolina during the afternoon and evening. A couple of the storms produced brief damaging winds.

What forecasters said that day

The local office's own words before the first event, 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 the first event at Jul 20, 4:01 PM EST, 39 minutes earlier.

Area forecast discussion, Jul 20, 4:01 PM EST, 39 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
501 PM EDT MON JUL 20 2015

.SYNOPSIS...
THE REGION WILL STAY WARM AND HUMID THROUGH TUESDAY...WHEN A WEAK
COLD FRONT MOVES INTO THE AREA.  THE FRONT WILL STALL JUST TO THE
SOUTH OF THE REGION THROUGH THE REMAINDER OF THE WEEK...RETURNING
TEMPERATURES TO NEAR NORMAL. THE CHANCE FOR SHOWERS AND
THUNDERSTORMS WILL CONTINUE EACH DAY THROUGH THE PERIOD AS THE AREA
REMAINS UNDERNEATH A BROAD EAST COAST TROUGH...TO THE EAST OF A DEEP
RIDGE OVER THE PLAINS.

&&

.NEAR TERM /THROUGH TUESDAY/...
AS OF 445 PM EDT...THE MAIN ADJUSTMENT HAS BEEN TO BOOST POPS ACROSS
THE SRN TIER OF THE NC MTNS AND OUT ALONG THE INTERSTATE 40 CORRIDOR
WHERE MID AFTERNOON OUTFLOWS ARE CREATING NEW CONVECTION. IN
ADDITION...THE GOING HEAT ADVISORY WAS MAINTAINED FROM LAURENS TO
ELBERTON IN THE HIGHER SFC DEWPOINT POOL...BUT CANCELLED ACROSS
UNION SC WHERE DEWPOINTS ARE MORE SOLIDLY IN THE UPPER 60S.

OTHERWISE...LAPS CAPES REMAIN MODEST THIS AFTN WHICH IS LIKELY
KEEPING COVERAGE DOWN A BIT. STILL CANNOT RULE OUT A FEW STRONG TO
SEVERE STORMS THRU MID EVENING...BUT THE BETTER CHANCES SHOULD BE TO
THE NORTH WHERE SHEAR IS BETTER. THE CONVECTION ALLOWING MODELS ALSO
SHOW THE BEST COVERAGE DURING THE EARLY TO MIDDLE EVENING AS
CONVECTION THAT DEVELOPS UPSTREAM...IN AN AREA WITH MUCH BETTER
INSTABILITY...MOVES IN FROM THE WEST. WILL RETAIN A CHANCE POP OVER
THE NC MTNS A BIT LONGER INTO THE EVENING HOURS TO ACCOUNT FOR THIS.
CONVECTION SHOULD DIE OFF BY LATE EVENING...AFTER WHICH ONLY
CONVECTIVE DEBRIS CLOUDS WILL REMAIN. EXPECT MILD TEMPS AGAIN
OVERNIGHT.

TUESDAY COULD BE A BIT MORE INTERESTING AS UPPER HEIGHTS FALL WITH A
SHORT WAVE DROPPING DOWN QUICKLY ACROSS THE GREAT LAKES/UPPER OH
VALLEY/NE. HOWEVER...THE MODELS SUGGEST THIS MAY HAPPEN EARLIER IN
THE DAY...PERHAPS EVEN BEFORE WE GET ANY SUBSTANTIAL HEATING. THAT
TIMING WOULD CARRY THE BEST MID/UPPER SUPPORT TO THE EAST IN THE 15Z
TO 18Z TIME FRAME...BUT A BOUNDARY WOULD BE LEFT TO LAY OUT ACROSS
THE FCST AREA THRU THE AFTERNOON. THE GFS ONLY DEVELOPS NEW
CONVECTIVE PRECIP OVER THE MTNS...WHICH SEEMS UNDERDONE WITH A
BOUNDARY IN THE VICINITY. THE NAM LOOKS BETTER AND IS FAVORED...SO
THE FCST CONTINUES TO FEATURE A CHANCE ACROSS THE WHOLE FCST AREA...
ALBEIT HIGHEST TOWARD THE TN BORDER. CANNOT RULE OUT A FEW SEVERE
STORMS AGAIN...BUT ONCE AGAIN...THE BETTER CHANCE WILL BE TO THE
NORTH WHERE THE BETTER FORCING WILL BE. HIGH TEMPS WILL BE A DEGREE
OR TWO LESS...WHICH SHOULD KEEP THE HEAT INDEX BELOW ADVISORY
CRITERIA.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/...
AS OF 215 PM...AN UPPER LOW WILL SWING FROM NEAR JAMES BAY...SE
TOWARD NORTHERN MAINE THROUGH THURSDAY WHICH WILL LOWER HEIGHTS
ACROSS THE EASTERN U.S. AT THE SURFACE...A WEAK COLD FRONT IS
FORECAST BY ALL GUIDANCE SOURCES TO MOVE THROUGH THE WESTERN
CAROLINAS AND NE GA TUE NIGHT AND SETTLE PERHAPS INTO THE SC
MIDLANDS AND NORTH CENTRAL GA ON WED. THE GFS CONTINUES TO SHOW THE
FRONT MAKING PROGRESS FARTHER SOUTH THAN THE NAM WHICH RESULTS IN
LOWER DEWPOINTS AND A MORE STABLE ENIVRONMENT ACROSS THE AREA ON
WED. THE NAM ON THE OTHER HAND ALLOWS THE AIRMASS TO MOISTEN QUICKLY
WED AFTERNOON WITH A CONVECTIVE COMPLEX THEN MOVING THROUGH THE
MOUNTAINS INTO THE FOOTHILLS BY WED EVENING TRIGGERED BY A SHORT
WAVE IN THE NW FLOW ALOFT. THE TRUTH PROBABLY LIES SOMEWHERE IN
BETWEEN THESE TWO SOLUTIONS. A MODEL BLEND RESULTS IN SCT
SHOWERS/THUNDERSTORMS DEVELOPING OVER THE MOUNTAINS IN THE AFTERNOON
TRIGGERED BY THE WEAK SHORT WAVE RIPPLING ALONG IN THE NW FLOW. THIS
UPPER WAVE IS FORECAST TO GENERATE A LOW ON THE FRONTAL BOUNDARY
ACROSS THE SC MIDLANDS WED NIGHT. HENCE...SOME SCT SHOWERS/STORMS
ASSOCIATED WITH THE FRONTAL LOW MAY THEN AFFECT THE REST OF THE AREA
WED NIGHT IN EARLY THURSDAY. ON THURSDAY...THE SHOWERS ASSOCIATED
WITH LOW SHOULD PULL EAST OF THE AREA WITH THE MAJORITY OF THE DAY
BEING BECOMING MOSTLY DRY. THE HOT TEMPS WILL BE MITIGATED SOMEWHAT
WITH THE ARRIVAL OF THE FRONT...BUT STILL REMAIN A LITTLE ABOVE
CLIMO.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
AS OF 245 PM MONDAY...THE EXTENDED PERIOD BEGINS ON THURSDAY NIGHT
WITH THE UPPER TROUGH PERSISTING ACROSS THE EAST COAST.  AN
UPPER-LEVEL RIDGE PERSISTS OVER THE SOUTHERN PLAINS...PLACING THE
REGION IN FAMILIAR NORTHWEST FLOW ALOFT.  AT THE SURFACE...A
QUASI-STATIONARY FRONT WILL BE LOCATED NEAR OR OVER THE FORECAST
AREA AND ITS EXACT LOCATION WILL DETERMINE EXACTLY HOW MUCH OF THE
FORECAST AREA WILL BE STABLE AND DRY HEADING INTO THE WEEKEND.
NEVERTHELESS...THE UPPER-LEVEL PATTERN WILL GENERALLY PERSIST
HEADING INTO MONDAY AND TUESDAY...WHEN THE RIDGING OVER THE SOUTHERN
PLAINS EXPANDS NORTH AND EAST AND DEEPENS SLIGHTLY IN RESPONSE TO
THE EAST COAST TROUGH LIFTING NORTH AND EAST INTO NEW ENGLAND.  THE
AFOREMENTIONED FRONT WILL SLOWLY PROPAGATE TOWARDS THE GULF COASTAL
PLAIN WHILE BEHIND THE FRONT...HIGH PRESSURE CENTERED ACROSS THE
EASTERN GREAT LAKES NOSES SOUTH INTO OUR REGION BY FRIDAY.  BY
SATURDAY...THE SURFACE HIGH PRESSURE AND ASSOCIATED RIDGE AXIS
SHIFTS OFFSHORE...TRANSITIONING OUR LOW-LEVEL FLOW TO A
SOUTHEASTERLY DIRECTION IN ADVANCE OF ANOTHER WEAK FRONT APPROACHING
FROM THE OHIO VALLEY.  GUIDANCE IS IN GENERAL AGREEMENT ABOUT
BRINGING THE REMNANTS OF THIS BOUNDARY ACROSS THE AREA SUNDAY
NIGHT...BUT THE GENERAL SE TO SOUTHERLY LOW-LEVEL FLOW WILL PERSIST
THROUGH THE END OF THE PERIOD ON TUESDAY MORNING.

IN TERMS OF SENSIBLE WEATHER...AT THIS TIME THE PREVIOUSLY MENTIONED
SURFACE FRONT NEAR OUR AREA ON FRIDAY SHOULD WORK TO ENHANCE POPS TO
MID-CHANCE ACROSS THE SOUTHERN PORTIONS OF OUR AREA...WHILE THE
DRIER AND MORE STABLE AIRMASS BEHIND THE FRONT SHOULD CAP POPS TO
SLIGHT CHANCE ACROSS THE WESTERN CAROLINAS.  HEADING INTO
SATURDAY...THE AREA SHOULD CONTINUE TO EXPERIENCE NEAR TO BELOW
NORMAL POPS BUT THE SOUTHEASTERLY LOW-LEVEL FLOW MAY INDUCE
CONVECTION ALONG THE FAVORED UPSLOPE AREAS OF THE BLUE RIDGE AND
APPALACHIANS AS CAPE VALUES START TO RECOVER...ESPECIALLY SOUTH AND
WEST.  BY SUNDAY EVENING...CHANCE POPS ACROSS THE AREA IN ADVANCE OF
THE APPROACHING FRONTAL BOUNDARY WILL PERSIST AT A MINIMUM INTO
EARLY TUESDAY AS THE REMNANT TROUGH AXIS LINGERS NEAR THE AREA.
TEMPERATURES WILL RETREAT TO NEAR NORMAL ACROSS THE AREA BEHIND THE
FRONT ON FRIDAY...AND SHOULD STAY NEAR NORMAL UNTIL MONDAY...WHEN
SOME SLIGHT WARMING WILL BEGIN TO TAKE PLACE IN RESPONSE TO THE
BUILDING UPPER RIDGE.

AS OF 245 AM MONDAY...AN UPPER TROF WILL PERSIST ALONG THE EAST
COAST...WHILE A RIDGE BUILDS OVER THE GREAT PLAINS FOR LATE IN THE
WEEK INTO THE WEEKEND. THIS WILL KEEP THE CWFA UNDER NWLY DEEP-LAYER
FLOW...AND SHUD RESULT IN NEAR OR BELOW CLIMO POPS THRU THE MEDIUM
RANGE. BLENDING IN THE LATEST HPC AND 00Z MEDIUM RANGE GUIDANCE DID
TREND POPS DOWN...BUT STILL HAVE SLGT CHC TO LOW-END CHC OF DIURNAL
CONVECTION EACH DAY. TEMPS WILL ALSO BE NOT AS HOT AS THEY/VE BEEN
LAST FEW DAYS. HOVERING NEAR TO SLIGHTLY ABOVE NORMAL.

&&

.AVIATION /21Z MONDAY THROUGH SATURDAY/...
AT KCLT...CONDITIONS SHOULD REMAIN VFR THROUGH THE PERIOD...OUTSIDE
OF THUNDERSTORMS...WHICH WILL BE THE MAIN CONCERN. THE CONSENSUS OF
THE LATEST CONVECTION ALLOWING MODELS SHOWS PERHAPS AN EARLIER
ARRIVAL OF TSTMS NEARBY...SO PUSHED TEMPO TSRA TO 21Z TO 01Z WITH
THE LATEST UPDATE. VARIABLE WIND SHOULD BECOME WSW LATE AFTERNOON
BASED ON MODEL GUIDANCE SHOWING A WEAK LEE TROF. THE CONVECTION
SHOULD DIE OFF SHORTLY AFTER SUNSET...AFTER WHICH TIME ONLY
CONVECTIVE DEBRIS CLOUDS WILL REMAIN. IF A THUNDERSTORM HAPPENS AT
THE AIRFIELD...THE POSSIBILITY OF MORNING FOG GOES UP. HAVE LEFT IT
OUT FOR NOW. ON TUESDAY...EXPECT A WSW WIND AGAIN AS A WEAK BOUNDARY
APPROACHES FROM THE WEST. CONVECTION MAY INITIATE A BIT EARLIER AS
THE BOUNDARY SHOULD HELP TO FOCUS ITS DEVELOPMENT...BUT CONFIDENCE
WAS NOT HIGH ENOUGH TO ADD A PROB30 IN THE LAST HOUR OR TWO OF THE
TAF.

ELSEWHERE...VFR CONDITIONS ARE CURRENTLY EXPECTED FOR THE NEXT 24
HOURS AT MOST PLACES...WITH THE EXCEPTION OF SOME VALLEY FOG AT
KAVL. MAIN CONCERN WILL BE THE POTENTIAL FOR DEEP CONVECTION LATE
THIS AFTERNOON AND THIS EVENING. THE BEST CHANCES WILL BE FROM KAVL
TO KHKY WITH MAINLY VCTS AT THE UPSTATE TAF SITES. ANY LOCATION THAT
GETS PRECIP THIS AFTERNOON WILL HAVE AN INCREASED CHANCE OF MORNING
FOG. THE ARRIVAL OF A WEAK SURFACE FRONT FROM THE WEST BY MIDDAY
SUGGESTS THAT A PROB30 WOULD BE APPROPRIATE ON TUESDAY FROM MID
MORNING ONWARD.

OUTLOOK...TSTM COVERAGE MAY INCREASE ON TUESDAY AFTERNOON AS
WESTERLY FLOW INCREASES ALOFT AND A WEAK FRONTAL BOUNDARY DROPS INTO
THE AREA. A MORE DIURNAL PATTERN IS THEN EXPECTED FROM MID WEEK ON.
THERE WILL BE CHANCES OF MORNING FOG/STRATUS EACH DAY...MAINLY WHERE
RAIN FELL THE DAY BEFORE.

CONFIDENCE TABLE...

            21-03Z        03-09Z        09-15Z        15-18Z
KCLT       HIGH 100%     HIGH 100%     HIGH 100%     HIGH 100%
KGSP       HIGH 100%     HIGH 100%     HIGH 100%     HIGH 100%
KAVL       HIGH 100%     HIGH 100%     HIGH 100%     HIGH 100%
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: (MUST BE LOWER CASE)

WWW.WEATHER.GOV/GSP/AVIATION_TABLES

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...HEAT ADVISORY UNTIL 7 PM EDT THIS EVENING FOR GAZ029.
NC...NONE.
SC...HEAT ADVISORY UNTIL 7 PM EDT THIS EVENING FOR SCZ011-012-019.

&&

SYNOPSIS...JMP
NEAR TERM...HG/PM
SHORT TERM...LG
LONG TERM...JMP
AVIATION...HG/PM
Hazardous weather outlook, Jul 20, 3:41 PM EST, 59 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
441 PM EDT MON JUL 20 2015

GAZ010-017-NCZ033-035-048>053-056-058-059-062>065-501>510-SCZ001>003-
212045-
RABUN-HABERSHAM-AVERY-ALEXANDER-MADISON-YANCEY-MITCHELL-SWAIN-
HAYWOOD-BUNCOMBE-CATAWBA-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-
441 PM EDT MON JUL 20 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MOUNTAINS OF NORTHEAST
GEORGIA...WESTERN NORTH CAROLINA...AND UPSTATE SOUTH CAROLINA...AS
WELL AS THE NORTH CAROLINA FOOTHILLS.

.DAY ONE...TONIGHT.

ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP LATE
THIS AFTERNOON ACROSS THE MOUNTAINS AND THE I-40 CORRIDOR. WHILE
THE PRIMARY THREATS WILL BE FROM CLOUD TO GROUND LIGHTNING AND
LOCALLY HEAVY RAINFALL...AN ISOLATED SEVERE STORM OR TWO WILL BE
POSSIBLE...WITH LOCALLY DAMAGING WINDS BEING THE PRIMARY THREAT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

..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.
..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

GAZ018-026-028-NCZ036-037-057-068>072-082-SCZ004>010-013-014-212045-
STEPHENS-FRANKLIN-HART-IREDELL-DAVIE-ROWAN-CLEVELAND-LINCOLN-GASTON-
MECKLENBURG-CABARRUS-UNION-GREATER OCONEE-GREATER PICKENS-
GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-ANDERSON-CHESTER-
441 PM EDT MON JUL 20 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT
NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...TONIGHT.

ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP LATE
THIS AFTERNOON ACROSS THE PIEDMONT OF SOUTH CAROLINA...NORTHEAST
GEORGIA...AND SOUTHERN NORTH CAROLINA. WHILE THE PRIMARY THREATS
WILL BE FROM CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY
RAINFALL...AN ISOLATED SEVERE STORM OR TWO WILL BE POSSIBLE...
WITH LOCALLY DAMAGING WINDS BEING THE PRIMARY THREAT.

IN ADDITION...HIGH TEMPERATURES IN THE MID TO UPPER 90S WILL
COMBINE WITH MODERATE LEVELS OF HUMIDITY TO PRODUCE HEAT INDEX
VALUES OF 100 TO 105. STAY OUT OF THE SUN AS MUCH AS POSSIBLE
DURING THE HOTTEST PART OF THE DAY...PREFERABLY IN AN AIR-
CONDITIONED AREA. IF YOU DO GO OUTSIDE...DRINK PLENTY OF
FLUIDS...AND WEAR LIGHT COLORED AND LOOSE FITTING CLOTHING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

..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.
..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

GAZ029-SCZ011-012-019-212045-
ELBERT-ABBEVILLE-LAURENS-GREENWOOD-
441 PM EDT MON JUL 20 2015

...HEAT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...

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.

   HEAT ADVISORY.

ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP LATE
THIS AFTERNOON ACROSS THE PIEDMONT OF SOUTH CAROLINA AND NORTHEAST
GEORGIA. WHILE THE PRIMARY THREATS WILL BE FROM CLOUD TO GROUND
LIGHTNING AND LOCALLY HEAVY RAINFALL...AN ISOLATED SEVERE STORM OR
TWO WILL BE POSSIBLE... WITH LOCALLY DAMAGING WINDS BEING THE
PRIMARY THREAT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

..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.
..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

HG

In the hours before

Special weather statement, Jul 20, 4:04 PM EST, 36 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
504 PM EDT MON JUL 20 2015

NCZ049-053-505-202145-
BUNCOMBE NC-MCDOWELL MOUNTAINS NC-YANCEY NC-
504 PM EDT MON JUL 20 2015

...STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTH CENTRAL
YANCEY...CENTRAL BUNCOMBE AND SOUTHWESTERN MCDOWELL COUNTIES UNTIL
545 PM EDT...

AT 501 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
DOWNTOWN ASHEVILLE...MOVING NORTHEAST AT 20 MPH.

WIND GUSTS UP TO 45 MPH...SMALL HAIL...AND HEAVY RAINFALL RATES UP
TO 2 INCHES PER HOUR WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
DOWNTOWN ASHEVILLE...BLACK MOUNTAIN...WOODFIN...SWANNANOA...
WEAVERVILLE...BILTMORE FOREST...OLD FORT...B.R. PARKWAY-NC ARBORETUM
TO EAST ASHEVILLE...NORTH ASHEVILLE AND WEST ASHEVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE COMBINATION OF GUSTY WINDS AND SATURATED SOIL CONDITIONS MAY
CAUSE SCATTERED TREES AND POWER LINES TO FALL. DANGEROUS CLOUD TO
GROUND LIGHTNING IS ALSO OCCURING WITH STORM. SEEK SHELTER INSIDE
IF POSSIBLE.

&&

LAT...LON 3547 8256 3564 8268 3584 8231 3563 8214
TIME...MOT...LOC 2101Z 242DEG 18KT 3559 8255

JPT

The radar

The Greer radar (KGSP), 126 km away, was scanning. The volume nearest the first event began at 21:39 UTC.

Open the radar archive at this moment

Event by event

5 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Caldwell

When
July 20, 4:40 PM EST
Where
Caldwell County, 1.68 mi E of Granite Falls
Measured
50 kt (58 mph) estimated gust
Reported by
Trained Spotter
Coordinates
35.800, -81.400

Spotter reported multiple trees blown down at a golf course off Highway 321.

Thunderstorm Wind, Iredell

When
July 20, 6:08 PM EST
Where
Iredell County, 3.95 mi WSW of Cool Spg
Measured
50 kt (58 mph) estimated gust
Reported by
Trained Spotter
Coordinates
35.820, -80.810

Spotter reported multiple trees and power lines blown down along River Hill Rd.

Thunderstorm Wind, Buncombe

When
July 20, 6:20 PM EST
Where
Buncombe County, 0.69 mi S of Kennworth
Measured
50 kt (58 mph) estimated gust
Reported by
Newspaper
Coordinates
35.570, -82.570

Newspaper reported multiple trees and some power lines were blown down in west Asheville, particularly along Riverview Dr, Grandview Dr, and Lamb Ave.

Thunderstorm Wind, Mecklenburg

When
July 20, 7:00 PM EST
Where
Mecklenburg County, 2.67 mi NW of Croft to 0.56 mi E of Huntersville
Measured
50 kt (58 mph) estimated gust
Reported by
Broadcast Media
Coordinates
35.380, -80.860

Media reported a tree blown down on Hambright Rd and another tree down on power lines at 4th St and Main.

Thunderstorm Wind, Rutherford

When
July 20, 8:01 PM EST
Where
Rutherford County, 0.56 mi W of Forest City
Measured
50 kt (58 mph) estimated gust
Reported by
911 Call Center
Coordinates
35.330, -81.890

County comms reported multiple trees blown down at Butler Rd and Hazelwood Dr.

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in North Carolina in 2015Every state in 2015This day in weather historyWarnings in North Carolina, July 2015

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 597047, 597048, 598543, 597049, 597285.