Alert archive / North Carolina / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 382, NWS Greenville-Spartanburg, SC

June 15, 20116 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 15, 2011, 5:26 PM EDT for 6 counties in North Carolina. It was in force for 38 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 15, 2011, 5:26 PM EDT (21:26 UTC)
Expired: Jun 15, 2011, 6:04 PM EDT
In force: 38 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Buncombe County, NC, Haywood County, NC, Jackson County, NC, Macon County, NC, Madison County, NC, Yancey County, NC

The radar

The Knoxville radar (KMRX), 73 km from the middle of the area, began a volume at 21:26 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 15, 5:30 PM EDT	TSTM WND DMG	4 Nw Franklin, XX	PUBLIC REPORT TREES DOWN NEAR MACON COUNTY AIRPORT
Jun 15, 5:30 PM EDT	TSTM WND DMG	Franklin, NC	MULTIPLE TREES DOWN IN FRANKLIN
Jun 15, 5:30 PM EDT	TSTM WND DMG	Sylva, NC	MULTIPLE TREES DOWN
Jun 15, 5:35 PM EDT	TSTM WND GST 65	Waynesville, NC	RADIO STATION IN WAYNESVILLE REPORTED 60 TO 70 MPH WINDS.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 15, 12:52 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.4 hours before the alert went out and 280 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1319 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

336 
WUUS52 KGSP 152126
SVRGSP
NCC021-087-099-113-115-199-152215-
/O.NEW.KGSP.SV.W.0382.110615T2126Z-110615T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
ISSUED BY NATIONAL WEATHER SERVICE COLUMBIA SC
526 PM EDT WED JUN 15 2011

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BUNCOMBE COUNTY IN WESTERN NORTH CAROLINA...
  HAYWOOD COUNTY IN WESTERN NORTH CAROLINA...
  THIS INCLUDES THE CITY OF WAYNESVILLE...
  JACKSON COUNTY IN WESTERN NORTH CAROLINA...
  THIS INCLUDES THE CITY OF SYLVA...
  MACON COUNTY IN WESTERN NORTH CAROLINA...
  THIS INCLUDES THE CITY OF FRANKLIN...
  MADISON COUNTY IN WESTERN NORTH CAROLINA...
  THIS INCLUDES THE CITY OF MARSHALL...
  YANCEY COUNTY IN WESTERN NORTH CAROLINA...
  THIS INCLUDES THE CITY OF BURNSVILLE...

* UNTIL 615 PM EDT

* AT 521 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED ALONG A
  LINE EXTENDING FROM 11 MILES NORTHEAST OF HOT SPRINGS TO 7 MILES
  WEST OF OTTO...OR ALONG A LINE EXTENDING FROM 13 MILES SOUTHEAST OF
  GREENEVILLE TO 10 MILES SOUTHWEST OF FRANKLIN...AND MOVING
  SOUTHEAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WAYNESVILLE AND MARSHALL BY 535 PM EDT...
  CANTON BY 540 PM EDT...
  MARS HILL...LEICESTER AND HIGHLANDS BY 545 PM EDT...
  WEAVERVILLE...CRUSO AND CASHIERS BY 550 PM EDT...
  WOODFIN BY 555 PM EDT...

LAT...LON 3603 8259 3596 8259 3604 8244 3600 8219
      3532 8282 3529 8292 3500 8312 3500 8353
      3510 8360 3533 8339 3533 8334 3539 8334
      3552 8322 3552 8317 3558 8317 3594 8284
      3593 8279 3601 8276 3606 8265
TIME...MOT...LOC 2127Z 298DEG 32KT 3598 8265 3506 8346

$$

SJN

2 follow-up statements

969 
WWUS52 KGSP 152157
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
ISSUED BY NATIONAL WEATHER SERVICE COLUMBIA SC
557 PM EDT WED JUN 15 2011

NCC021-087-099-113-152208-
/O.CAN.KGSP.SV.W.0382.000000T0000Z-110615T2215Z/
BUNCOMBE NC-HAYWOOD NC-MACON NC-JACKSON NC-
557 PM EDT WED JUN 15 2011

...THE SEVERE THUNDERSTORM WARNING FOR JACKSON...MACON...HAYWOOD AND
BUNCOMBE COUNTIES IS CANCELLED...

LAT...LON 3603 8259 3596 8259 3598 8249 3604 8244
      3601 8227 3599 8226 3600 8220 3582 8236
      3580 8252 3575 8264 3569 8289 3574 8292
      3576 8295 3579 8296 3588 8291 3594 8284
      3592 8280 3601 8276 3606 8266
TIME...MOT...LOC 2158Z 298DEG 32KT 3600 8236 3566 8271

$$

NCC115-199-152215-
/O.CON.KGSP.SV.W.0382.000000T0000Z-110615T2215Z/
MADISON NC-YANCEY NC-
557 PM EDT WED JUN 15 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR YANCEY AND MADISON COUNTIES...

AT 556 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM RAMSEYTOWN TO 9 MILES SOUTHEAST OF
LUCK...OR ALONG A LINE EXTENDING FROM 8 MILES NORTHWEST OF BURNSVILLE
TO 9 MILES SOUTH OF MARSHALL...MOVING SOUTHEAST AT 35 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  BURNSVILLE BY 610 PM EDT...

LAT...LON 3603 8259 3596 8259 3598 8249 3604 8244
      3601 8227 3599 8226 3600 8220 3582 8236
      3580 8252 3575 8264 3569 8289 3574 8292
      3576 8295 3579 8296 3588 8291 3594 8284
      3592 8280 3601 8276 3606 8266
TIME...MOT...LOC 2158Z 298DEG 32KT 3600 8236 3566 8271

$$

SJN

202 
WWUS52 KGSP 152204
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
ISSUED BY NATIONAL WEATHER SERVICE COLUMBIA SC
604 PM EDT WED JUN 15 2011

NCC115-199-152214-
/O.CAN.KGSP.SV.W.0382.000000T0000Z-110615T2215Z/
MADISON NC-YANCEY NC-
604 PM EDT WED JUN 15 2011

...THE SEVERE THUNDERSTORM WARNING FOR YANCEY AND MADISON COUNTIES IS
CANCELLED...

LAT...LON 3603 8259 3596 8259 3598 8249 3604 8244
      3601 8227 3599 8226 3600 8220 3582 8236
      3580 8252 3575 8264 3569 8289 3574 8292
      3576 8295 3579 8296 3588 8291 3594 8284
      3592 8280 3601 8276 3606 8266
TIME...MOT...LOC 2204Z 298DEG 32KT 3597 8230 3563 8265

$$

SJN

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 Jun 15, 3:32 PM EDT, 1 hour 54 minutes earlier.

Area forecast discussion, Jun 15, 3:32 PM EDT, 1 hour 54 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
ISSUED BY NATIONAL WEATHER SERVICE COLUMBIA SC
332 PM EDT WED JUN 15 2011

.SYNOPSIS...
A FRONT WILL MOVE INTO THE FORECAST AREA TONIGHT. THE FRONT WILL
LINGER NEAR THE AREA THROUGH THE WEEKEND.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
CONVERGENCE ASSOCIATED WITH A WEAK SURFACE FRONT PLUS MOISTURE AND
INSTABILITY ASSOCIATED WITH A MID-LEVEL SHORTWAVE TROUGH SHOULD
RESULT IN NUMEROUS SHOWERS AND THUNDERSTORMS TONIGHT. MODERATE
INSTABILITY AND WEAK TO MODERATE SHEAR SHOULD RESULT IN ORGANIZED
THUNDERSTORMS. EXPECT A FEW THUNDERSTORMS WITH DAMAGING WIND AND
HAIL. CLOUDINESS SHOULD HELP HOLD UP TEMPERATURES AND THE GUIDANCE
MAY BE A LITTLE TOO WARM.

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/...
THE NAM AND GFS SHOW DEEPER MOISTURE SHIFTING EAST OF THE FORECAST
AREA BEHIND THE MAIN MID-LEVEL SHORTWAVE TROUGH THURSDAY.
HOWEVER...THE MODELS KEEP THE WEAK SURFACE TROUGH IN THE AREA WITH
RELATIVELY COLD TEMPERATURES ALOFT. EXPECT THUNDERSTORMS BUT
COVERAGE SHOULD BE LIMITED BY MOISTURE. THE NAM AND GFS MOS
SUPPORT SLIGHT CHANCE OR CHANCE POPS. THE NAM INDICATES SURFACE-
BASED LI/S -4 TO -8 SO SEVERE THUNDERSTORMS MAY OCCUR.

&&

.LONG TERM /FRIDAY THROUGH WEDNESDAY/...
MODELS IN GENERAL AGREEMENT ON AN UPPER RIDGE REMAINING ANCHORED
OVER THE MID SOUTH WHILE THE FORECAST STAYS WITHIN THE
NORTHWESTERLY FLOW ON THE PERIPHERY OF THE HIGH. IN THE LOW
LEVELS...A FRONTAL BOUNDARY IS SHOWN TO REMAIN STALLED OUT ACROSS
THE AREA...KEEPING THE AREA WITHIN DEEPER MOISTURE AND
CONVERGENCE. KEPT THE GOING FORECAST OF ABOVE NORMAL TEMPERATURES
AND MAINLY A DIURNAL POP TREND (CHANCE MOUNTAINS AND SLIGHT CHANCE
PIEDMONT) EACH AFTERNOON.

&&

.AVIATION /20Z WEDNESDAY THROUGH MONDAY/...
AT KCLT...HIGH PRESSURE OVER THE REGION WILL WEAKEN THIS AFTERNOON
AS A COLD FRONT APPROACHES FROM THE WEST LATE TONIGHT AND
THURSDAY MORNING. MOISTURE FLUX WILL INCREASE OVER THE FORECAST
AREA THIS EVENING. INITIAL VFR CONDITIONS ARE EXPECTED TO BECOME
MVFR MAINLY BECAUSE OF CIGS 2-3 KFT AND SOME VSBYS 4-5 MILES IN
SHOWERS. BRIEF IFR CONDITIONS MAY OCCUR IN HEAVIER SHOWERS AND
THUNDERSTORMS FROM 04Z-14Z THURSDAY MORNING. COLD FRONT SHOULD
MOVE THROUGH THE AREA LATE THURSDAY MORNING 14Z-16Z TIME FRAME.
AFTER 14Z...MAINLY VFR CONDITIONS ARE EXPECTED.

ELSEWHERE...HIGH PRESSURE OVER THE REGION WILL WEAKEN THIS AFTERNOON
AS A COLD FRONT APPROACHES FROM THE WEST LATE TONIGHT AND
THURSDAY MORNING. MOISTURE FLUX WILL INCREASE OVER THE FORECAST
AREA THIS EVENING. INITIAL VFR CONDITIONS ARE EXPECTED TO BECOME
MVFR MAINLY BECAUSE OF CIGS 2-3 KFT AND SOME VSBYS 4-5 MILES IN
SHOWERS. BRIEF IFR CONDITIONS MAY OCCUR IN HEAVIER SHOWERS AND
THUNDERSTORMS FROM 04Z-14Z THURSDAY MORNING. COLD FRONT SHOULD
MOVE THROUGH THE AREA LATE THURSDAY MORNING 14Z-16Z TIME FRAME.
AFTER 14Z...MAINLY VFR CONDITIONS ARE EXPECTED.

EXTENDED AVIATION OUTLOOK...DIURNALLY CONVECTIVE ACTIVITY WITH
DAYTIME HEATING AS IMPULSES MOVING ACROSS THE REGION IN THE
NORTHWEST FLOW INTO NEXT TUESDAY WILL PRODUCE BRIEF PERIODS OF
IFR/MVFR CONDITIONS IN SHOWERS AND THUNDERSTORMS.

&&

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

&&

Hazardous weather outlook, Jun 15, 1:18 PM EDT, 4 hours 8 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
118 PM EDT WED JUN 15 2011

GAZ018-026-028-029-NCZ033-035>037-049-050-053-056-057-064-065-
068>072-082-501>510-SCZ001>014-019-161730-
STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-IREDELL-DAVIE-YANCEY-
MITCHELL-BUNCOMBE-CATAWBA-ROWAN-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-ABBEVILLE-
LAURENS-UNION SC-CHESTER-GREENWOOD-
118 PM EDT WED JUN 15 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.
THUNDERSTORMS THIS AFTERNOON AND TONIGHT COULD POSSIBLY BECOME
SEVERE. THE MAIN THREAT WILL BE DAMAGING WIND AND HAIL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

A FRONT WILL EXTEND THROUGH THE AREA THURSDAY. THERE IS A SLIGHT
RISK OF SEVERE STORMS ALONG THE FRONT...MAINLY ACROSS THE
PIEDMONT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

GAZ010-017-NCZ048-051-052-058-059-062-063-161730-
RABUN-HABERSHAM-MADISON-SWAIN-HAYWOOD-GRAHAM-NORTHERN JACKSON-MACON-
SOUTHERN JACKSON-
118 PM EDT WED JUN 15 2011

...SEVERE THUNDERSTORM WATCH 478 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA AND WESTERN
NORTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARD.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

A FRONT WILL EXTEND THROUGH THE AREA THURSDAY. THERE IS A SLIGHT
RISK OF SEVERE STORMS ALONG THE FRONT...MAINLY ACROSS THE
PIEDMONT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 3:45 PM EDT	Severe Thunderstorm Warning	GSP	Haywood	30 min
Jun 15, 3:50 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, Haywood, Madison	25 min
Jun 15, 5:03 PM EDT	Severe Thunderstorm Warning	GSP	Graham, Haywood, Jackson, Macon, Swain	57 min
Jun 15, 5:46 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, Henderson, McDowell, Polk, Rutherford, Transylvania	29 min
Jun 15, 6:18 PM EDT	Severe Thunderstorm Warning	GSP	Henderson, Polk, Rutherford	27 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2011 Every 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.