Alert archive / North Carolina / Special Weather Statements in 2016
Special Weather Statement, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this special weather statement at Jul 21, 2016, 1:52 PM EDT for Mecklenburg County, North Carolina. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2016, 1:52 PM EDT (17:52 UTC)
- Expired
- Jul 21, 2016, 2:15 PM EDT
- In force
- 23 min
- Issued by
- NWS Greenville-Spartanburg, SC
County Mecklenburg County, NC
The radar
The Greer radar (KGSP), 116 km from the middle of the area, began a volume at 17:55 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.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 5.9 hours before the alert went out and 140 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.
- Mixed-layer CAPE
- 590 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 1074 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jul 21, 1:52 PM EDT, 0 minutes earlier.
Area forecast discussion, Jul 21, 1:52 PM EDT, 0 minutes before
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
152 PM EDT THU JUL 21 2016
.SYNOPSIS...
Bermuda high pressure and upper level ridging will remain in control
of the weather over the next few days. This will result in well
above normal temperatures...before a weak cold front pushes in from
the north early next week.
&&
.NEAR TERM /THROUGH FRIDAY/...
As of 125 PM EDT: A broad upper ridge will remain centered over the
southern plains through Friday while a trough axis lingers just off
the Atlantic coast. Weak upper forcing sliding southward over the
southern Appalachians this afternoon is aiding convective
development. Recent HRRR runs produce some robust development over
the southern mountains through mid afternoon. Foothill/piedmont
instability should rise to 2000 to 3000 J/kg of SBCAPE, with
continued 55 dBZ thresholds at 26 kft for severe, except lower from
CLT east in higher DCAPE air. Expect an early peak to the convection
with the passage of the upper jetlet and weak dpva this afternoon,
and then a quick dissipation through the evening hours. Patchy fog
development is possible wherever rain falls and also the lower
mountain river valleys - particularly from the French Broad Valley
and valleys farther southwest.
A little less in the way of upper energy moving southward east of
the ridge into the Carolinas is expected on Friday. Convection will
develop later in the day and primarily over the higher ridges mid
afternoon - with some survival into the adjacent foothills or
perhaps piedmont toward evening. Better insolation, weak downsloping
flow, and less moisture in profiles should lead to higher temps
Friday afternoon than Thursday. More dewpoint mixout is possible as
well, so heat index values should be capped around 100 in the
hottest areas.
&&
.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/...
At 130 PM Thursday: On Friday night and upper ridge will build east
front the plains across the southern Appalachians, completely
covering our area by late Sunday. Before this ridge overspreads the
area, weak lobes of vorticity may move southeast over the mountains
on the west side of a coastal trough. The models show modest
instability and weak shear each day, supportive of convection, but
not organized storms. Weak steering flow may support locally heavy
rainfall however, especially if cell can train over the same areas.
Temperatures will warm from around 3 degrees above normal to around
6 degrees above normal. Lingering moisture will allow apparent
temperatures to approach 102 degrees in the upper Savannah River
Valley on Friday, and 100 to 105 degrees from the foothills to the
Piedmont on Saturday.
&&
.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
As of 115 PM Thursday...Not much change needed to the going fcst.
Strong ulvl ridging will continue into Mon then slowly break down as
a couple H5 s/w trofs swing across the Glakes region. This will
bring a sfc front into the fcst area late Mon or early Tue. With
little flow aloft this front will become stationary and reinforced
somewhat on Thu as another weak bndry settles in from the north. As
far as the sensible wx goes...sct to num afternoon showers and
thunderstorms will be the norm...esp across the higher terrain...as
enhanced llvl lift provides broad focusing in a moderately unstable
yet low sheared environment. Max temps were brought down a degree or
two most locale Mon with increasing cloud cover possible...however
heat index values shud still reach adv levels across the srn half of
the CWFA. With weakening in the upper heights and lessening deep
layered subs...max temps will return closer to normal levels Tue
through the period.
&&
.AVIATION /18Z THURSDAY THROUGH TUESDAY/...
At KCLT: The forecast begins will a few cells already on the radar
scope just west of the airfield, but slowly building east while
drifting south. Will include a narrow window of TEMPO TSRA but
mention VCSH otherwise. Will hold onto continued light southerly
flow but with tempo gusts. VFR conditions will then continue
overnight through Friday with light SE to SW surface winds. Profiles
will be a bit drier on Friday and no convection will be mentioned
through 18Z.
Elsewhere: Scattered thunderstorms will threaten the mountain and
foothill airfields through the afternoon hours, with chances best
around KAVL. Will hold onto VCTS at all sites going forward through
at least 22Z. Expect light southerly winds throughout, except
turning NW at KAVL overnight. Fog will be possible overnight at any
location where rain falls late today, but with chances best in the
mountain river valleys. The MOS is hitting KAVL especially hard, but
it has not performed well of late. Will still feature IFR fog after
09Z but not hit dense fog hard yet. Will keep locations dry through
18Z Friday with a later start to convection expected. Surface winds
will become more S to SW but remain less than 10 kt throughout, with
persistent NW flow at KAVL.
Outlook: Expect typical midsummer weather with scattered afternoon
and evening showers and thunderstorms through the weekend. Morning
fog and low stratus will be possible each day in the mountain
valleys and also in locations that receive heavy rainfall the
preceding afternoon/evening.
Confidence Table...
18-24Z 00-06Z 06-12Z 12-18Z
KCLT High 100% High 100% High 100% High 100%
KGSP High 100% High 100% High 100% High 100%
KAVL High 100% High 100% High 88% High 91%
KHKY High 100% High 100% High 84% High 91%
KGMU High 100% High 100% High 100% High 100%
KAND High 100% High 100% High 89% High 94%
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 SATURDAY (07-23)
MAX TEMPERATURE MIN TEMPERATURE
STATION HIGH LOW HIGH LOW
------- ---------- ---------- ---------- ----------
KAVL 95 1983 69 1974 71 2015 50 1966
1952 1938 1999
1934 1983
KCLT 101 1987 73 1880 78 1991 56 2007
1952
KGSP 102 1952 74 1974 79 1934 59 1966
1947
RECORDS FOR SUNDAY (07-24)
MAX TEMPERATURE MIN TEMPERATURE
STATION HIGH LOW HIGH LOW
------- ---------- ---------- ---------- ----------
KAVL 96 1983 68 1985 71 1934 52 1966
1895
KCLT 100 1983 73 1938 78 2010 59 1947
1952 1883
KGSP 101 1952 70 1985 79 2010 59 1904
RECORDS FOR MONDAY (07-25)
MAX TEMPERATURE MIN TEMPERATURE
STATION HIGH LOW HIGH LOW
------- ---------- ---------- ---------- ----------
KAVL 92 2010 68 2000 70 2012 51 1895
2005 2011
1987 2010
KCLT 101 2010 69 2000 79 2010 62 1947
KGSP 100 1995 72 2000 77 2010 57 1911
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.
&&
SYNOPSIS...SBK
NEAR TERM...HG
SHORT TERM...JAT
LONG TERM...SBK
AVIATION...HG
CLIMATE...GSPHazardous weather outlook, Jul 21, 5:04 AM EDT, 8 hours 48 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 504 AM EDT THU JUL 21 2016 GAZ010-017-NCZ033-035-048>053-058-059-062>065-501>510-SCZ001>003- 220915- RABUN-HABERSHAM-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- 504 AM EDT THU JUL 21 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP AGAIN THIS AFTERNOON AND EVENING...WITH THE HIGHEST COVERAGE EXPECTED IN THE MOUNTAINS. THE MAIN THREATS WILL BE FREQUENT CLOUD-TO-GROUND LIGHTNING...LOCALLY HEAVY RAINFALL...AND GUSTY WINDS. A FEW STORMS MAY BE STRONG ENOUGH TO PRODUCE DAMAGING WIND GUSTS. .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... NONE. GAZ018-026-028-029-NCZ036-037-056-057-068>072-082-SCZ004>014-019- 220915- STEPHENS-FRANKLIN-HART-ELBERT-IREDELL-DAVIE-CATAWBA-ROWAN-CLEVELAND- LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION-GREATER OCONEE- GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK- ANDERSON-ABBEVILLE-LAURENS-CHESTER-GREENWOOD- 504 AM EDT THU JUL 21 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP AGAIN THIS AFTERNOON AND EVENING...WITH THE HIGHEST COVERAGE EXPECTED IN THE MOUNTAINS. THE MAIN THREATS WILL BE FREQUENT CLOUD-TO-GROUND LIGHTNING...LOCALLY HEAVY RAINFALL...AND GUSTY WINDS. A FEW STORMS MAY BE STRONG ENOUGH TO PRODUCE DAMAGING WIND GUSTS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. ..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..SATURDAY...EXCESSIVE HEAT POSSIBLE. HEAT INDEX VALUES ARE FORECAST TO RANGE FROM 100 TO 108 DEGREES ACROSS MUCH OF THE PIEDMONT EACH AFTERNOON FROM SATURDAY THROUGH MONDAY. ..SUNDAY...EXCESSIVE HEAT POSSIBLE. ..MONDAY...EXCESSIVE HEAT POSSIBLE. ..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE. ARK
In the hours before
Special weather statement, Jul 21, 1:49 PM EDT, 3 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
149 PM EDT THU JUL 21 2016
GAZ010-NCZ062-SCZ001-211815-
RABUN GA-MACON NC-OCONEE MOUNTAINS SC-
149 PM EDT THU JUL 21 2016
...A STRONG THUNDERSTORM WITH INTENSE LIGHTNING WILL IMPACT
NORTHEASTERN RABUN...SOUTHEASTERN MACON AND CENTRAL OCONEE COUNTIES
UNTIL 215 PM EDT...
AT 148 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
WITH INTENSE LIGHTNING 10 MILES NORTHEAST OF CLAYTON...OR 5 MILES
SOUTHEAST OF SKY VALLEY...MOVING SOUTHEAST AT 30 MPH.
LOCATIONS TO BE IMPACTED INCLUDE...
WALHALLA...SALEM...OCONEE STATE PARK...LAKE KEOWEE...SKY VALLEY...
HIGHLANDS...MOUNTAIN REST AND PINE MOUNTAIN.
IN ADDITION TO INTENSE LIGHTNING...WIND GUSTS UP TO 40 MPH 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.
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 3506 8325 3491 8290 3490 8290 3490 8291
3484 8290 3481 8290 3476 8297 3469 8306
3492 8337
TIME...MOT...LOC 1748Z 305DEG 26KT 3495 8323
07Special weather statement, Jul 21, 1:52 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
152 PM EDT THU JUL 21 2016
NCZ070-071-211815-
GASTON NC-MECKLENBURG NC-
152 PM EDT THU JUL 21 2016
...A STRONG THUNDERSTORM WILL IMPACT WEST CENTRAL MECKLENBURG AND
SOUTHEASTERN GASTON COUNTIES UNTIL 215 PM EDT...
AT 152 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 9
MILES EAST OF GASTONIA...OR NEAR BELMONT...MOVING NORTHEAST AT 15
MPH.
LOCATIONS TO BE IMPACTED INCLUDE... UPTOWN
CHARLOTTE...GASTONIA...CENTRAL CHARLOTTE...NORTHWEST CHARLOTTE... MT
HOLLY...BELMONT...CRAMERTON...MCADENVILLE...STEELE CREEK AND
CHARLOTTE DOUGLAS AIRPORT.
PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH 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 3512 8104 3514 8105 3515 8104 3524 8113
3539 8097 3523 8078
TIME...MOT...LOC 1752Z 236DEG 10KT 3524 8101
KRENTZThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 2:03 PM EDT | Severe Thunderstorm Warning | GSP | Henderson, Transylvania | 42 min |
| Jul 21, 2:31 PM EDT | Special Weather Statement | GSP | Mecklenburg | 44 min |
| Jul 21, 2:47 PM EDT | Special Weather Statement | GSP | Henderson | 28 min |
| Jul 21, 2:51 PM EDT | Severe Thunderstorm Warning | GSP | Mecklenburg | 24 min |
| Jul 21, 3:01 PM EDT | Severe Thunderstorm Warning | GSP | Henderson, Polk | 30 min |
| Jul 21, 6:37 PM EDT | Special Weather Statement | GSP | Rutherford | 38 min |
| Jul 21, 6:43 PM EDT | Special Weather Statement | GSP | Cleveland | 32 min |
| Jul 20, 8:43 PM EDT | Special Weather Statement | GSP | Spartanburg | 47 min |
| Jul 20, 9:01 PM EDT | Severe Thunderstorm Warning | GSP | Cherokee, Spartanburg | 44 min |
| Jul 20, 9:16 PM EDT | Special Weather Statement | GSP | Greenwood | 29 min |
| Jul 21, 4:16 AM EDT | Special Weather Statement | GSP | Laurens | 29 min |
| Jul 21, 5:50 AM EDT | Areal Flood Advisory | GSP | Laurens | 115 min |
| Jul 21, 1:49 PM EDT | Special Weather Statement | GSP | Oconee | 26 min |
| Jul 21, 1:54 PM EDT | Special Weather Statement | GSP | Greenville | 36 min |
| Jul 21, 3:55 PM EDT | Special Weather Statement | GSP | Anderson | 50 min |
| Jul 21, 4:06 PM EDT | Severe Thunderstorm Warning | GSP | Anderson | 24 min |
| Jul 21, 4:22 PM EDT | Special Weather Statement | GSP | Abbeville | 38 min |
| Jul 21, 4:57 PM EDT | Special Weather Statement | GSP | Abbeville | 48 min |
| Jul 21, 5:28 PM EDT | Special Weather Statement | GSP | Greenwood | 32 min |
| Jul 21, 6:32 PM EDT | Special Weather Statement | GSP | Spartanburg | 43 min |
| Jul 21, 6:34 PM EDT | Special Weather Statement | GSP | Spartanburg | 41 min |
| Jul 21, 7:00 PM EDT | Special Weather Statement | GSP | Spartanburg | 30 min |
| Jul 21, 7:07 PM EDT | Areal Flood Advisory | GSP | Spartanburg | 113 min |
| Jul 21, 7:27 PM EDT | Flash Flood Warning | GSP | Spartanburg | 3 hr |
| Jul 21, 7:31 PM EDT | Severe Thunderstorm Warning | GSP | Spartanburg | 29 min |
| Jul 21, 7:54 PM EDT | Special Weather Statement | GSP | Greenville | 51 min |
| Jul 21, 2:44 PM EDT | Special Weather Statement | GSP | Habersham | 31 min |
| Jul 21, 3:42 PM EDT | Special Weather Statement | GSP | Stephens | 48 min |
| Jul 21, 4:29 PM EDT | Special Weather Statement | GSP | Hart | 31 min |
| Jul 21, 4:55 PM EDT | Special Weather Statement | GSP | Hart | 35 min |
Nearby
Special Weather Statements in North Carolina, 2016Every special weather statement in 2016
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.