Alert archive / North Carolina / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 222, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 1, 2011, 4:51 PM EDT for Jackson County, Transylvania County, North Carolina. It was in force for 54 min. 4 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
- Jun 1, 2011, 4:51 PM EDT (20:51 UTC)
- Expired
- Jun 1, 2011, 5:45 PM EDT
- In force
- 54 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
Counties Jackson County, NC, Transylvania County, NC
The radar
The Greer radar (KGSP), 86 km from the middle of the area, began a volume at 20:54 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 1, 4:54 PM EDT | HAIL 0.75 | Wolf Mountain, NC | DIME TO MARBLE SIZED HAIL AT WOLF MOUNTAIN RESERVOIR |
| Jun 1, 4:55 PM EDT | HAIL 0.5 | 9 Ese Tuckasegee, NC | HAD BRIEF MARBLE SIZED HAIL. ALMOST NO WIND. DESCRIBED THE STORM AS RAGING TOWARD WOLF MOUNTAIN. THIS IS 2 TO 3 MILES OUT EAST FROM CANADA ROAD ALONG NEDDIE MOUNTAIN ROAD. |
| Jun 1, 4:55 PM EDT | HAIL 1.25 | 10 Ese Tuckasegee, NC | NEAR WOLF MOUNTAIN...HAIL SOMEWHAT IN THE SHAPE OF SPEARS WITH DIAMETER LARGER THAN AN INCH FELL FOR A SHORT TIME. NO WIND DURING THE STORM AND A LIGHT GUST PRIOR TO STORM. |
| Jun 1, 5:15 PM EDT | HAIL 1 | 11 Ese Cullowhee, NC |
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 4 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.9 hours before the alert went out and 250 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
- 2716 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 1339 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
399
WUUS52 KGSP 012051
SVRGSP
NCC099-175-012145-
/O.NEW.KGSP.SV.W.0222.110601T2051Z-110601T2145Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
451 PM EDT WED JUN 1 2011
THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WEST CENTRAL TRANSYLVANIA COUNTY IN WESTERN NORTH CAROLINA...
CENTRAL JACKSON COUNTY IN WESTERN NORTH CAROLINA...
* UNTIL 545 PM EDT
* AT 450 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
WOLF MOUNTAIN...OR 15 MILES WEST OF BREVARD...MOVING WEST AT 5 MPH.
* LOCATIONS IMPACTED INCLUDE...
TUCKASEGEE...THORPE RESERVOIR AND CULLOWHEE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FOR
LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY
RAIN CAN OCCUR WITH ANY THUNDERSTORM. SEEK SHELTER INDOORS AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM PASSES.
TO REPORT DAMAGING WINDS...LARGE HAIL...OR FLOODING...THROUGH OUR
AUTOMATED REPORTING SYSTEM...CALL OUR TOLL FREE NUMBER...
1 8 7 7...6 3 3...6 7 7 2.
&&
LAT...LON 3539 8319 3532 8296 3530 8295 3530 8293
3529 8292 3531 8290 3530 8287 3512 8291
3512 8318 3516 8322 3523 8322
TIME...MOT...LOC 2051Z 100DEG 3KT 3522 8300
$$
ARK1 follow-up statement
513
WWUS52 KGSP 012136
SVSGSP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
536 PM EDT WED JUN 1 2011
NCC099-175-012146-
/O.EXP.KGSP.SV.W.0222.000000T0000Z-110601T2145Z/
TRANSYLVANIA NC-JACKSON NC-
536 PM EDT WED JUN 1 2011
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL JACKSON AND WEST
CENTRAL TRANSYLVANIA COUNTIES WILL EXPIRE AT 545 PM EDT...
THE STORM THAT HAD PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS.
LAT...LON 3539 8319 3532 8296 3530 8295 3530 8293
3529 8292 3531 8290 3530 8287 3512 8291
3512 8318 3516 8322 3523 8322
TIME...MOT...LOC 2136Z 100DEG 3KT 3523 8305
$$
ARKWhat 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 Jun 1, 4:50 PM EDT, 1 minute earlier.
Area forecast discussion, Jun 1, 4:50 PM EDT, 1 minute before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
450 PM EDT WED JUN 1 2011
.SYNOPSIS...
A VERY WEAK COOL FRONT WILL APPROACH FROM THE NORTH INCREASING DAILY
THUNDERSTORM CHANCES AND LOWERING TEMPERATURES ON THURSDAY AND
FRIDAY. THE UPPER RIDGE WILL THEN STRENGTHEN AGAIN AND ALLOW
TEMPERATURES TO WARM THROUGH EARLY NEXT WEEK.
&&
.NEAR TERM /THROUGH THURSDAY/...
LOW LEVEL CONVERGENCE ALONG WITH A SLIGHTLY WEAKER CAP...APPEARS TO
BE ALLOWING CONVECTION TO TRIGGER FIRST IN SW CWFA LOCATIONS. LOW
LEVEL CONVERGENCE SHOULD FILL IN ACROSS THE NC FOOTHILLS AND
PIEDMONT THROUGH LATE EVENING...ALLOWING ISOLATED TO SCATTERED
THUNDERSTORMS TO DEVELOP THERE AS WELL THROUGH THE EVENING HOURS.
LAPS CAPE VALUES EXCEED 5000 J/KG MOST AREAS WITH DCAPE VALUES
AROUND 1000 J/KG ALONG WITH HIGH EQUIVALENT POTENTIAL TEMP LAPSES.
ANY STORMS THAT DO DEVELOP HAVE THE POTENTIAL TO PRODUCE DAMAGING
WINDS AND EVEN LARGE HAIL DESPITE THE HIGH FREEZING LEVELS. THE
TSTMS SHOULD GRADUALLY DISSIPATE WITH THE LOSS OF HEATING AS A
BACKDOOR FRONT BECOMES STATIONARY ACROSS THE UPSTATE INTO NE GA
OVERNIGHT.
A WEAK VEERING WIND FIELD WILL PRODUCE A SLIGHT UPSLOPE COMPONENT
AND CONVERGENCE OVER THE WESTERN UPSTATE/NE GA INTO FAR WESTERN NC
ON THU. ALL MODELS RESPOND WITH AT LEAST SCATTERED CONVECTION THOSE
AREAS THU AFTERNOON. USED THE 3 HOURLY SREF POPS WITH SOME MINOR
ADJUSTMENTS FOR THU AFTERNOON. SOMEWHAT DRIER AIR WILL MANAGE TO
MOVE INTO THE NC FOOTHILLS/ PIEDMONT WHICH SHOULD PRECLUDE ANY
PRECIP CHANCES THERE ON THU. IT WILL REMAIN QUITE HOT ON THU...BUT
TEMPS SHOULD BE A COUPLE DEGREES LOWER THAN TODAY DUE TO CLOUDS AND
INCREASED CONVECTION OVER THE WESTERN AREAS...AND MARGINALLY LOWER
THICKNESSES EAST. USED A MOS BLEND FOR TEMP/DEWPOINT FIELDS.
&&
.SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY NIGHT/...
AS OF 2 PM WEDNESDAY...THE SHORT TERM FCST PICKS UP AT 00Z ON FRIDAY
WITH THE AXIS OF THE UPPER RIDGE ORIENTED NORTH/SOUTH OVER THE MISS
RIVER VALLEY AND SFC HIGH PRESSURE PERSISTING OVER THE SE CONUS. THE
UPPER RIDGE IS EXPECTED TO DEAMPLIFY LATE IN THE PERIOD SAT/EARLY
SUN...ASIDE FROM THIS NO OTHER MAJOR PATTERN CHANGES ARE ANTICIPATED
THRU THE SHORT TERM. WE WILL CONTINUE A PATTERN OF ABOVE AVERAGE
TEMPERATURES WITH HIGHS IN THE LOW 90S ON FRI AND A FEW DEGREES
WARMER ON SAT OVER THE LOWER ELEVATIONS. I KEPT A WIDESPREAD SLIGHT
CHANCE POP OVER THE ENTIRE CWA FOR DIURNALLY DRIVEN SH/TS ON FRI AND
A SLIGHT CHANCE OVER THE NC MTS AND NE GA FOR SAT AFTERNOON/EVENING.
THE MOST RECENT RECENT FCST SOUNDINGS ARE INDICATING BETTER OVERALL
INSTABILITY ON FRI AND POSSIBLY A BETTER LOW LVL CONVERGENCE FIELD
DURING THE AFTERNOON/EVENING HOURS.
&&
.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
AS OF 1245 PM WEDNESDAY...THE MEDIUM RANGE GUIDANCE FAVORS A
BLOCKING PATTERN AT UPPER LEVELS ACROSS THE N ATLANTIC THROUGH THE
FIRST HALF OF NEXT WEEK. THE PERSISTENT PATTERN PLACES AN UPPER
RIDGE AXIS OVER THE MS RIVER WITH RELATIVELY LOW SPREAD AMONGST THE
GEFS ENSEMBLE...RAISING CONFIDENCE THAT OUR RECENT PERIOD OF WELL
ABOVE NORMAL TEMPERATURES AND DRY CONDITIONS WILL CONTINUE. SUNDAY
SHOULD BE THE WARMEST DAY WITH NEAR RECORD HIGHS POSSIBLE.
THEREAFTER...THE GUIDANCE SHOWS HEIGHTS FALLING JUST A BIT TO BRING
TEMPS BACK DOWN TO MERELY 10 DEGREES ABOVE NORMAL. DEEP CONVECTION
IS HIGHLY DOUBTFUL SUNDAY AND MONDAY IN THIS PATTERN. BY TUESDAY AND
WEDNESDAY...CONFIDENCE GOES DOWN SO CLIMO IS ALLOWED TO CREEP IN.
THAT MEANS A SLIGHT CHANCE OVER THE MTNS TUESDAY AFTERNOON...AND
THEN SCATTERED AFTERNOON THUNDERSTORMS OVER THE MTNS AND ISOLATED
STORMS ELSEWHERE WEDNESDAY AFTERNOON.
&&
.AVIATION /21Z WEDNESDAY THROUGH MONDAY/...
AT KCLT AND ELSEWHERE...FOR THE LATE AFTERNOON AND EVENING
HOURS...THE MAIN FOCUS IS ON POTENTIAL FOR THUNDERSTORM DEVELOPMENT.
ATMOSPHERE HAS HIGH INSTABILITY...BUT NEEDS TO OVERCOME CONVECTIVE
INHIBITION LOWER LEVELS. BELIEVE THAT WEAK SURFACE CONVERGENCE
PROVIDED BY WEAK BOUNDARY MOVING INTO THE AREA LATE THIS AFTERNOON
WILL BE ENOUGH TO TRIGGER ISOLATED THUNDERSTORM STORMS ACROSS THE
FOOTHILLS/NORTHERN PIEDMONT. WILL INCLUDE A CB MENTION AT ALL TAF
SITES EXCEPT KAVL/KAND. ANY STORMS THAT DO DEVELOP HAVE THE
POTENTIAL TO BECOME SEVERE. OVERNIGHT...ALL GUIDANCE POINTS TO A
COUPLE HOURS OF MVFR FOG RESTRICTIONS 10Z-13Z MAINLY KAVL/MOUNTAIN
VALLEYS...BUT ALSO AT KCLT.
OUTLOOK...WHILE IT WILL REMAIN HOT...THUNDERSTORM ACTIVITY WILL
BECOME A LITTLE MORE WIDESPREAD INTO THE WEEKEND EACH AFTERNOON.
EARLY MRNG VALLEY FOG WILL BE PSBL EACH DAY...MAINLY MTN VALLEYS.
&&
.CLIMATE...
RECORD MAX TEMPS FOR TODAY
GSP 96
CLT 98
AVL 93
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...NONE.
SC...NONE.
&&
SYNOPSIS...HG/JPT
NEAR TERM...LG
SHORT TERM...JPT
LONG TERM...PM
AVIATION...HG/LG
CLIMATE...JPTHazardous weather outlook, Jun 1, 5:33 AM EDT, 11 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 533 AM EDT WED JUN 1 2011 GAZ029-SCZ011>014-019-020945- ELBERT-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD- 533 AM EDT WED JUN 1 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE. GAZ010-017-018-026-028-NCZ033-035>037-048>053-056>059-062>065- 068>072-082-501>510-SCZ001>010-020945- RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-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 NC- CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE- MCDOWELL MOUNTAINS-EASTERN MCDOWELL-RUTHERFORD MOUNTAINS- GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-OCONEE MOUNTAINS- PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE- GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK- ANDERSON- 533 AM EDT WED JUN 1 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. SCATTERED TO ISOLATED THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE AREA THIS AFTERNOON AND EVENING. A FEW OF THESE STORMS MAY BECOME SEVERE...PRODUCING DAMAGING WIND GUSTS AND/OR LARGE HAIL. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE.
In the hours before
Special weather statement, Jun 1, 4:45 PM EDT, 6 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
445 PM EDT WED JUN 1 2011
NCZ063-064-012130-
SOUTHERN JACKSON-TRANSYLVANIA-
445 PM EDT WED JUN 1 2011
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN JACKSON AND
SOUTHWESTERN TRANSYLVANIA COUNTIES THROUGH 530 PM EDT...
AT 441 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR WOLF MOUNTAIN...OR 14 MILES WEST OF
BREVARD...MOVING SOUTH AT 5 MPH.
THIS STORM WILL BE NEAR...
LAKE TOXAWAY...
SMALL HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THIS
STORM.
LAT...LON 3508 8315 3510 8316 3525 8310 3528 8298
3529 8294 3528 8286 3506 8287 3503 8298
3506 8317
ARKThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 3:38 PM EDT | Severe Thunderstorm Warning | GSP | Haywood, Jackson, Transylvania | 67 min |
| Jun 1, 4:45 PM EDT | Special Weather Statement | GSP | Jackson | 45 min |
| Jun 1, 5:14 PM EDT | Severe Thunderstorm Warning | GSP | Jackson, Macon, Transylvania | 36 min |
| Jun 1, 6:01 PM EDT | Special Weather Statement | GSP | Jackson | 44 min |
| Jun 1, 6:19 PM EDT | Special Weather Statement | GSP | Jackson | 26 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2011Every severe thunderstorm warning in 2011
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.