Alert archive / North Carolina / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 294, NWS Greenville-Spartanburg, SC

August 10, 20137 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 10, 2013, 3:10 PM EDT for 7 counties in North Carolina. It was in force for 65 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: Aug 10, 2013, 3:10 PM EDT (19:10 UTC)
Expired: Aug 10, 2013, 4:15 PM EDT
In force: 65 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Alexander County, NC, Burke County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Iredell County, NC, Lincoln County, NC

The radar

The Greer radar (KGSP), 122 km from the middle of the area, began a volume at 19:13 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, 7.2 hours before the alert went out and 135 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: 1595 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 669 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

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 Aug 10, 2:34 PM EDT, 36 minutes earlier.

Area forecast discussion, Aug 10, 2:34 PM EDT, 36 minutes before

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Hazardous weather outlook, Aug 10, 2:57 PM EDT, 13 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
257 PM EDT SAT AUG 10 2013

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-111900-
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-
257 PM EDT SAT AUG 10 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

NUMEROUS THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE WESTERN
CAROLINAS AND NORTHEAST GEORGIA LATE THIS AFTERNOON THROUGH THIS
EVENING. THUNDERSTORM COVERAGE THROUGH THE EARLY EVENING HOURS
WILL BE GREATEST ACROSS THE FOOTHILLS...AS WELL AS ALONG PIEDMONT
AREAS OF WESTERN NORTH CAROLINA. A FEW OF THESE THUNDERSTORMS MAY
PRODUCE FLASH FLOODING OR DAMAGING WIND GUSTS. FLOODING WILL BE
MOST LIKELY IN LOCATIONS IMPACTED BY MULTIPLE ROUNDS OR LARGER
CLUSTERS OF THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

SCATTERED TO NUMEROUS THUNDERSTORMS WILL DEVELOP ACROSS THE REGION
AGAIN ON SUNDAY. SEVERAL OF THESE STORMS MAY PRODUCE DAMAGING WIND
GUSTS AND EXCESSIVE RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE
HAIL...DAMAGING WINDS...OR FLASH FLOODING TO OUR OFFICE.

HG

In the hours before

Local storm report, Aug 10, 11:10 AM EDT, 4 hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1110 AM EDT SAT AUG 10 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0545 PM     TSTM WND DMG     2 S UNION GROVE         35.99N 80.87W
08/09/2013                   IREDELL            NC   EMERGENCY MNGR

            A TWO STORY FARMHOUSE DAMAGED. SEVERAL TREES DOWN AROUND
            THE PROPERTY. TIN BLOWN FROM THE ROOF 1500 FEET ACROSS A
            SOYBEAN FIELD.

&&

OUTLAW

Special weather statement, Aug 10, 11:48 AM EDT, 3 hours 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1148 AM EDT SAT AUG 10 2013

GAZ010-NCZ062-101700-
MACON-RABUN-
1148 AM EDT SAT AUG 10 2013

...A STRONG THUNDERSTORM WILL AFFECT RABUN AND SOUTHERN MACON
COUNTIES THROUGH 100 PM EDT...

AT 1144 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR TITUS...OR 7 MILES EAST OF HIAWASSEE...
MOVING EAST AT 15 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  NACOOHE LAKE...
  LAKE RABUN...
  LAKEMONT...
  CLAYTON...
  MOUNTAIN CITY...
  PINE MOUNTAIN...

WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE EXPECTED WITH THIS
STORM.

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. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE STORM
APPROACHES.

PLEASE REPORT DAMAGING WINDS...HAIL...OR FLOODING TO THE NATIONAL
WEATHER SERVICE GREENVILLE SPARTANBURG BY CALLING TOLL FREE...1...
800...2 6 7...8 1 0 1...OR BY POSTING ON OUR FACEBOOK PAGE...OR TWEET
IT USING HASHTAG NWSGSP. YOUR MESSAGE SHOULD DESCRIBE THE EVENT AND
SPECIFIC LOCATION WHERE IT OCCURRED.

LAT...LON 3488 8366 3500 8353 3510 8360 3516 8322
      3513 8319 3509 8315 3506 8317 3499 8310
      3494 8311 3488 8324 3482 8327 3482 8331
      3472 8335 3475 8343 3473 8351 3475 8355
      3482 8359 3483 8366

Special weather statement, Aug 10, 1:37 PM EDT, 1 hour 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
137 PM EDT SAT AUG 10 2013

NCZ036-101815-
IREDELL-
137 PM EDT SAT AUG 10 2013

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN IREDELL COUNTY THROUGH
215 PM EDT...

AT 134 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES EAST OF LOVE VALLEY...OR 15 MILES EAST OF
TAYLORSVILLE...MOVING SOUTHEAST AT 20 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  HARMONY...
  HARMONY...

WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE EXPECTED WITH THIS
STORM.

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. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE STORM
APPROACHES.

PLEASE REPORT DAMAGING WINDS...HAIL...OR FLOODING TO THE NATIONAL
WEATHER SERVICE GREENVILLE SPARTANBURG BY CALLING TOLL FREE...1...
800...2 6 7...8 1 0 1...OR BY POSTING ON OUR FACEBOOK PAGE...OR TWEET
IT USING HASHTAG NWSGSP. YOUR MESSAGE SHOULD DESCRIBE THE EVENT AND
SPECIFIC LOCATION WHERE IT OCCURRED.

LAT...LON 3586 8070 3581 8072 3593 8101 3600 8100
      3603 8102 3606 8101 3606 8069

Special weather statement, Aug 10, 2:09 PM EDT, 1 hour 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
209 PM EDT SAT AUG 10 2013

NCZ504-506-101900-
EASTERN MCDOWELL-GREATER BURKE-
209 PM EDT SAT AUG 10 2013

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN MCDOWELL AND
SOUTHWESTERN BURKE COUNTIES THROUGH 300 PM EDT...

AT 208 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES NORTHEAST OF GLENWOOD...OR 4 MILES
SOUTHEAST OF MARION...MOVING SOUTHEAST AT 5 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  DYSARTSVILLE...

SMALL HAIL...WIND GUSTS UP TO 40 MPH AND TORRENTIAL RAIN ARE EXPECTED
WITH THIS STORM.

PLEASE REPORT DAMAGING WINDS...HAIL...OR FLOODING TO THE NATIONAL
WEATHER SERVICE GREENVILLE SPARTANBURG BY CALLING TOLL FREE...1...
800...2 6 7...8 1 0 1...OR BY POSTING ON OUR FACEBOOK PAGE...OR TWEET
IT USING HASHTAG NWSGSP. YOUR MESSAGE SHOULD DESCRIBE THE EVENT AND
SPECIFIC LOCATION WHERE IT OCCURRED.

LAT...LON 3569 8172 3558 8180 3558 8182 3554 8185
      3553 8193 3563 8206 3566 8205 3576 8196
      3576 8194

Special weather statement, Aug 10, 2:26 PM EDT, 44 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
Aug 9, 8:01 PM EDT	Flash Flood Warning	GSP	Cabarrus	119 min
Aug 10, 1:20 PM EDT	Areal Flood Advisory	GSP	Jackson, Transylvania	2 hr
Aug 10, 1:37 PM EDT	Special Weather Statement	GSP	Iredell	38 min
Aug 10, 1:45 PM EDT	Severe Thunderstorm Warning	GSP	Davie, Iredell	60 min
Aug 10, 2:04 PM EDT	Areal Flood Advisory	GSP	Burke, McDowell	116 min
Aug 10, 2:09 PM EDT	Special Weather Statement	GSP	McDowell	51 min
Aug 10, 2:22 PM EDT	Severe Thunderstorm Warning	GSP	Burke, McDowell, Rutherford	53 min
Aug 10, 2:26 PM EDT	Special Weather Statement	GSP	Polk	64 min
Aug 10, 3:04 PM EDT	Areal Flood Advisory	GSP	Burke, Caldwell, Catawba	3 hr
Aug 10, 3:23 PM EDT	Special Weather Statement	GSP	Cleveland	52 min
Aug 10, 3:59 PM EDT	Severe Thunderstorm Warning	GSP	Catawba, Gaston, Iredell, Lincoln, Mecklenburg	61 min
Aug 10, 4:14 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Rowan	46 min
Aug 10, 4:36 PM EDT	Severe Thunderstorm Warning	GSP	Davie, Rowan	54 min
Aug 10, 6:24 PM EDT	Special Weather Statement	GSP	Union	51 min
Aug 10, 7:00 PM EDT	Areal Flood Advisory	GSP	Transylvania	2 hr
Aug 10, 7:45 PM EDT	Special Weather Statement	GSP	Polk	45 min
Aug 10, 7:22 PM EDT	Special Weather Statement	GSP	Greenville	38 min
Aug 10, 7:27 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Pickens	48 min
Aug 10, 11:48 AM EDT	Special Weather Statement	GSP	Rabun	72 min
Aug 10, 7:12 PM EDT	Areal Flood Advisory	GSP	Habersham	108 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2013 Every severe thunderstorm warning in 2013

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.