Alert archive / North Carolina / Tornado Warnings in 2010

Tornado Warning 21, NWS Greenville-Spartanburg, SC

July 12, 20104 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this tornado warning at Jul 12, 2010, 12:59 PM EDT for 4 counties in North Carolina. It was in force for 46 min. 2 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
Jul 12, 2010, 12:59 PM EDT (16:59 UTC)
Expired
Jul 12, 2010, 1:45 PM EDT
In force
46 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Cabarrus County, NC, Iredell County, NC, Lincoln County, NC, Mecklenburg County, NC

The radar

The Greer radar (KGSP), 149 km from the middle of the area, began a volume at 16:59 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

TimeReportWhereRemark
Jul 12, 1:24 PM EDTTSTM WND DMGHuntersville, NCTREES REPORTED DOWN IN HUNTERSVILLE
Jul 12, 1:25 PM EDTTSTM WND DMGHuntersville, NCTREE REPORTED DOWN ON AN INDIVIDUAL ON SAND DOWN LANE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 5.0 hours before the alert went out and 102 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2010-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2227 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2010-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2227 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
533 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.5

Open this sounding in Storm Lab

The text

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

457 
WFUS52 KGSP 121659
TORGSP
NCC025-097-109-119-121745-
/O.NEW.KGSP.TO.W.0021.100712T1659Z-100712T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1259 PM EDT MON JUL 12 2010

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* TORNADO WARNING FOR...
  CABARRUS COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  THIS INCLUDES THE CITY OF CONCORD...
  SOUTHEASTERN IREDELL COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  EASTERN LINCOLN COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  NORTHERN MECKLENBURG COUNTY IN THE PIEDMONT OF NORTH CAROLINA...

* UNTIL 145 PM EDT

* AT 1251 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 4 MILES
  NORTHEAST OF LOWESVILLE...OR 16 MILES EAST OF LINCOLNTON...MOVING
  EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HUNTERSVILLE AND DAVIDSON...
  CHARLOTTE MOTOR SPEEDWAY...
  KANNAPOLIS AND HARRISBURG...
  CONCORD...
  MOUNT PLEASANT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR STURDIER SHELTER.
OTHERWISE...GO TO AN INTERIOR ROOM ON THE LOWEST LEVEL OF YOUR HOME
OR PLACE OF BUSINESS. MAKE SURE THERE ARE AS MANY WALLS AND FLOORS
BETWEEN YOU AND THE OUTSIDE AS POSSIBLE.

TO REPORT TORNADOES...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 3528 8043 3537 8099 3539 8096 3540 8102
      3555 8098 3555 8096 3556 8095 3555 8074
      3551 8073 3550 8069 3550 8036 3549 8030
TIME...MOT...LOC 1659Z 277DEG 24KT 3545 8089

$$
LGL
2 follow-up statements
263 
WWUS52 KGSP 121722
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
122 PM EDT MON JUL 12 2010

NCC109-121729-
/O.CAN.KGSP.TO.W.0021.000000T0000Z-100712T1745Z/
LINCOLN NC-
122 PM EDT MON JUL 12 2010

...THE TORNADO WARNING FOR EASTERN LINCOLN COUNTY IS CANCELLED...


LAT...LON 3528 8043 3537 8098 3540 8095 3544 8096
      3546 8094 3554 8096 3556 8095 3555 8074
      3551 8073 3550 8069 3550 8036 3549 8030
TIME...MOT...LOC 1719Z 296DEG 11KT 3544 8088

$$

NCC025-097-119-121745-
/O.CON.KGSP.TO.W.0021.000000T0000Z-100712T1745Z/
CABARRUS NC-MECKLENBURG NC-IREDELL NC-
122 PM EDT MON JUL 12 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 PM EDT FOR
SOUTHEASTERN IREDELL...NORTHERN MECKLENBURG AND CABARRUS COUNTIES...

AT 112 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR CORNELIUS...OR 14 
MILES NORTHWEST OF UNC CHARLOTTE...MOVING EAST SOUTHEAST AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HUNTERSVILLE...CHARLOTTE MOTOR SPEEDWAY...MOUNT PLEASANT...
KANNAPOLIS...HARRISBURG AND CONCORD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT MONDAY
EVENING FOR PORTIONS OF CENTRAL NORTH CAROLINA.

&&

LAT...LON 3528 8043 3537 8098 3540 8095 3544 8096
      3546 8094 3554 8096 3556 8095 3555 8074
      3551 8073 3550 8069 3550 8036 3549 8030
TIME...MOT...LOC 1719Z 296DEG 11KT 3544 8088

$$
LGL
675 
WWUS52 KGSP 121748
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
148 PM EDT MON JUL 12 2010

NCC025-097-119-121756-
/O.EXP.KGSP.TO.W.0021.000000T0000Z-100712T1745Z/
CABARRUS NC-MECKLENBURG NC-IREDELL NC-
148 PM EDT MON JUL 12 2010

...THE TORNADO WARNING FOR SOUTHEASTERN IREDELL...NORTHERN
MECKLENBURG AND CABARRUS COUNTIES HAS EXPIRED...

A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR MUCH OF 
MECKLENBURG AND CABARRUS COUNTIES UNTIL 245 PM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT MONDAY
EVENING FOR PORTIONS OF CENTRAL NORTH CAROLINA.

LAT...LON 3528 8043 3537 8098 3540 8095 3544 8096
      3546 8094 3554 8096 3556 8095 3555 8074
      3551 8073 3550 8069 3550 8036 3549 8030
TIME...MOT...LOC 1722Z 296DEG 11KT 3544 8087

$$
LGL

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 12, 11:31 AM EDTSpecial Weather StatementGSPAlexander44 min
Jul 12, 11:44 AM EDTSpecial Weather StatementGSPCleveland46 min
Jul 12, 12:11 PM EDTSpecial Weather StatementGSPLincoln64 min
Jul 12, 1:38 PM EDTSevere Thunderstorm WarningGSPCabarrus, Mecklenburg, Union52 min
Jul 12, 1:46 PM EDTSevere Thunderstorm WarningGSPCabarrus, Mecklenburg59 min
Jul 12, 1:55 PM EDTAreal Flood AdvisoryGSPCabarrus, Gaston, Mecklenburg110 min
Jul 12, 2:30 PM EDTFlash Flood WarningGSPCabarrus, Mecklenburg3 hr
Jul 12, 4:49 PM EDTSpecial Weather StatementGSPUnion41 min
Jul 12, 5:20 PM EDTAreal Flood WarningGSPMecklenburg, Union115 min
Jul 12, 6:22 PM EDTSpecial Weather StatementGSPCleveland38 min

Nearby

Tornado Warnings in North Carolina, 2010Every tornado warning in 2010Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.