Alert archive / North Carolina / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 50, NWS Greenville-Spartanburg, SC

May 14, 20105 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 14, 2010, 7:27 PM EDT for 5 counties in North Carolina. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 14, 2010, 7:27 PM EDT (23:27 UTC)
Expired: May 14, 2010, 8:30 PM EDT
In force: 63 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Avery County, NC, Burke County, NC, Caldwell County, NC, McDowell County, NC, Mitchell County, NC

The radar

The Greer radar (KGSP), 117 km from the middle of the area, began a volume at 23:30 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

Roanoke, VA (KRNK), launched 12:00Z, 11.5 hours before the alert went out and 257 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: 707 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 695 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

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 14, 7:25 PM EDT, 2 minutes earlier.

Area forecast discussion, May 14, 7:25 PM EDT, 2 minutes before

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Hazardous weather outlook, May 14, 3:33 PM EDT, 3 hours 54 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
333 PM EDT FRI MAY 14 2010

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-151945-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-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-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD-
333 PM EDT FRI MAY 14 2010

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

CLUSTERS OF THUNDERSTORMS WILL DEVELOP OVER THE MOUNTAINS LATE THIS
AFTERNOON. THE THUNDERSTORMS WILL TRACK FROM WEST TO EAST...MOVING
OVER THE FOOTHILLS AND WESTERN PIEDMONT INTO THE EARLY EVENING.
SOME STORMS MAY BECOME SEVERE WITH DAMAGING WIND AND LARGE HAIL.
IN ADDITION...A FEW STORMS MAY PRODUCE ISOLATED AREAS OF EXCESSIVE
RAINFALL.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THUNDERSTORMS ARE EXPECTED AGAIN ON SATURDAY AS A COLD FRONT
STALLS OVER THE REGION. SOME OF THESE STORMS MAY ALSO BECOME
SEVERE WITH DAMAGING WIND AND LARGE HAIL. IN ADDITION...SOME OF
THESE STORMS MAY PRODUCE AREAS OF EXCESSIVE RAINFALL.

.SPOTTER INFORMATION STATEMENT...

NONE.

In the hours before

Special weather statement, May 14, 5:48 PM EDT, 1 hour 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
548 PM EDT FRI MAY 14 2010

NCZ033-503-142215-
AVERY-BURKE MOUNTAINS-
548 PM EDT FRI MAY 14 2010

...A STRONG THUNDERSTORM WILL AFFECT AVERY AND NORTHWESTERN BURKE
COUNTIES THROUGH 615 PM EDT...

AT 549 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES EAST OF INGALLS...OR 7 MILES NORTHEAST OF
SPRUCE PINE...MOVING NORTHEAST AT 15 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO JONAS
  RIDGE...SUGAR MOUNTAIN...NEWLAND...INGALLS...GRANDFATHER MOUNTAIN
  AND CROSSNORE.

PEA SIZE HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THIS
STORM.

LAT...LON 3610 8180 3606 8173 3596 8180 3594 8178
      3589 8190 3595 8194 3594 8196 3591 8195
      3590 8199 3596 8205 3601 8204 3604 8206
      3616 8182

HG

Special weather statement, May 14, 6:19 PM EDT, 1 hour 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
619 PM EDT FRI MAY 14 2010

NCZ033-142245-
AVERY-
619 PM EDT FRI MAY 14 2010

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN AVERY COUNTY THROUGH
645 PM EDT...

AT 618 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR BANNER ELK...OR 4 MILES NORTHEAST OF
NEWLAND...MOVING NORTHEAST AT 15 MPH. THIS THUNDERSTORM WILL MAINLY
IMPACT THE BANNER ELK VICINITY THROUGH 645 PM.

PEA SIZE HAIL...TORRENTIAL RAINFALL UP TO ONE INCH...AND WIND GUSTS
OF 30 TO 40 MPH ARE EXPECTED WITH THIS STORM.

LAT...LON 3621 8190 3619 8185 3616 8182 3610 8180
      3608 8176 3602 8191 3617 8201 3619 8198
      3624 8191

HG

Special weather statement, May 14, 6:33 PM EDT, 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
633 PM EDT FRI MAY 14 2010

NCZ049-050-505-142300-
MCDOWELL MOUNTAINS-MITCHELL-YANCEY-
633 PM EDT FRI MAY 14 2010

...A STRONG THUNDERSTORM WILL AFFECT EASTERN YANCEY...NORTHERN
MCDOWELL AND SOUTHEASTERN MITCHELL COUNTIES THROUGH 700 PM EDT...

AT 630 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES SOUTHWEST OF MICAVILLE...OR 5 MILES
SOUTHEAST OF BURNSVILLE...MOVING NORTHEAST AT 20 MPH.

THE AREA BETWEEN CELO AND BURNSVILLE...AND THEN FROM SPRUCE PINE TO
NEWLAND...WILL MAINLY BE AFFECTED BY THIS THUNDERSTORM THROUGH 7 PM.
PEA SIZE HAIL...VERY HEAVY RAINFALL...AND WIND GUSTS OF 30 TO 40 MPH
ARE EXPECTED WITH THIS THUNDERSTORM.

LAT...LON 3601 8204 3596 8205 3590 8199 3590 8196
      3592 8195 3594 8196 3595 8194 3590 8191
      3587 8191 3574 8227 3590 8238 3606 8207

HG

Special weather statement, May 14, 6:35 PM EDT, 52 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
635 PM EDT FRI MAY 14 2010

NCZ048-053-142300-
BUNCOMBE-MADISON-
635 PM EDT FRI MAY 14 2010

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN BUNCOMBE AND
SOUTHERN MADISON COUNTIES THROUGH 700 PM EDT...

AT 630 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR CANTON...OR 12 MILES NORTHEAST OF
WAYNESVILLE...MOVING NORTHEAST AT 10 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO MARSHALL...
  CANTO...WOODFIN...WEAVERVILLE...LEICESTER AND CANDLER.

PEA SIZE HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THIS
STORM.

LAT...LON 3573 8250 3551 8270 3554 8277 3557 8277
      3560 8280 3562 8282 3562 8284 3564 8287
      3585 8273

JPT

Special weather statement, May 14, 6:48 PM EDT, 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
648 PM EDT FRI MAY 14 2010

NCZ048-049-053-142315-
BUNCOMBE-MADISON-YANCEY-
648 PM EDT FRI MAY 14 2010

...A STRONG THUNDERSTORM WILL AFFECT EASTERN MADISON...NORTHEASTERN
BUNCOMBE AND SOUTHWESTERN YANCEY COUNTIES THROUGH 715 PM EDT...

AT 648 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR MARS HILL...OR 9 MILES EAST OF MARSHALL...
MOVING EAST AT 15 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO MOUNT
  MITCHELL STATE PARK...MARS HILL...WEAVERVILLE AND BARNARDSVILLE.

PEA SIZE HAIL...VERY HEAVY RAINFALL...AND WIND GUSTS OF 30 TO 40 MPH
ARE EXPECTED WITH THIS STORM.

LAT...LON 3594 8230 3571 8225 3568 8260 3586 8264

HG

Special weather statement, May 14, 7:21 PM EDT, 6 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 4:47 PM EDT	Special Weather Statement	GSP	Avery	28 min
May 14, 5:16 PM EDT	Special Weather Statement	GSP	Haywood	29 min
May 14, 5:48 PM EDT	Special Weather Statement	GSP	Avery	27 min
May 14, 6:19 PM EDT	Special Weather Statement	GSP	Avery	26 min
May 14, 6:33 PM EDT	Special Weather Statement	GSP	Yancey	27 min
May 14, 6:35 PM EDT	Special Weather Statement	GSP	Buncombe	25 min
May 14, 6:35 PM EDT	Severe Thunderstorm Warning	GSP	Avery, Burke, McDowell, Mitchell, Yancey	55 min
May 14, 6:48 PM EDT	Special Weather Statement	GSP	Yancey	27 min
May 14, 6:56 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, McDowell, Madison, Yancey	64 min
May 14, 7:11 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe	64 min
May 14, 7:21 PM EDT	Special Weather Statement	GSP	Caldwell	24 min
May 14, 7:30 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, Haywood, Henderson, Jackson, Transylvania	60 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2010 Every severe thunderstorm warning in 2010

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.