Alert archive / North Carolina / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 39, NWS Greenville-Spartanburg, SC

April 5, 20114 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 5, 2011, 1:21 AM EDT for 4 counties in North Carolina. It was in force for 54 min. 11 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: Apr 5, 2011, 1:21 AM EDT (05:21 UTC)
Expired: Apr 5, 2011, 2:15 AM EDT
In force: 54 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Cleveland County, NC, Gaston County, NC, Lincoln County, NC, Mecklenburg County, NC

The radar

The Greer radar (KGSP), 117 km from the middle of the area, began a volume at 05:23 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
Apr 5, 1:21 AM EDT	TSTM WND DMG	Cherryville, NC	LARGE BRANCHES DOWN. NICKLE HAIL. EST 40-50 MPH WIND GUSTS.
Apr 5, 1:22 AM EDT	TSTM WND DMG	5 Nw Cherryville, NC	50 OR MORE TREES BLOWN DOWN NEAR HW-182 AND HW-274. THE TREES RANGE BETWEEN 18 INCHES AND 4 FEET IN DIAMETER.
Apr 5, 1:33 AM EDT	TSTM WND DMG	Kings Mountain, NC	CARPORT BLOWN 100 YARDS
Apr 5, 1:33 AM EDT	HAIL 1.25	Kings Mountain, NC
Apr 5, 1:40 AM EDT	HAIL 1	Gastonia, NC	EST 50 MPH WIND GUSTS
Apr 5, 1:43 AM EDT	TSTM WND DMG	Dallas, NC	LARGE TREES DOWN AND DAMAGED SHED ON OLE HILL ROAD.
Apr 5, 1:50 AM EDT	HAIL 1	1 Nne Mcadenville, NC
Apr 5, 2:00 AM EDT	TSTM WND GST 66	5 Wsw Charlotte, NC
Apr 5, 2:15 AM EDT	TSTM WND DMG	Charlotte, NC	LARGE OAK TREE DAMAGED HOUSE ON SOUTH PARK ROAD
Apr 5, 2:18 AM EDT	HAIL 1	2 Wnw Paw Creek, NC
Apr 5, 2:25 AM EDT	HAIL 1	2 Sse Croft, NC

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 4, 9:45 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 5.4 hours before the alert went out and 137 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: 2364 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 291 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.

927 
WUUS52 KGSP 050521
SVRGSP
NCC045-071-109-119-050615-
/O.NEW.KGSP.SV.W.0039.110405T0521Z-110405T0615Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
121 AM EDT TUE APR 5 2011

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CLEVELAND COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  GASTON COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  SOUTHERN LINCOLN COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  WESTERN MECKLENBURG COUNTY IN THE PIEDMONT OF NORTH CAROLINA...

* UNTIL 215 AM EDT

* AT 119 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 5
  MILES SOUTHEAST OF WACO...OR 9 MILES EAST OF SHELBY...MOVING EAST
  AT 75 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BESSEMER CITY AND CROUSE...
  DALLAS AND STANLEY...
  MOUNT HOLLY AND LUCIA...
  MOUNTAIN ISLAND LAKE AND PAW CREEK...
  CENTER CITY CHARLOTTE...
  CROFT AND HUNTERSVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING WIND SPEEDS OF 60 TO
75 MPH. THESE WINDS CAN TOPPLE TREES AND POWER LINES. SEEK SHELTER ON
THE LOWEST LEVEL OF YOUR HOME OR OFFICE BUILDING. AVOID ROOMS THAT
MAY BE DAMAGED BY FALLING TREES. IF DRIVING...PULL OVER IN A CLEAR
AREA AWAY FROM LARGE TREES AND POWER POLES.

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 3509 8079 3507 8091 3511 8094 3505 8103
      3506 8106 3512 8104 3515 8106 3517 8143
      3545 8146 3551 8096 3549 8095 3551 8092
      3550 8079
TIME...MOT...LOC 0521Z 264DEG 64KT 3531 8134

$$
MCAVOY

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 9:50 PM EDT	Severe Thunderstorm Warning	GSP	Graham, Swain	55 min
Apr 4, 9:55 PM EDT	Areal Flood Advisory	GSP	Graham	4 hr
Apr 4, 10:14 PM EDT	Severe Thunderstorm Warning	GSP	Jackson, Macon	61 min
Apr 4, 10:42 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, Haywood, Madison, Swain	63 min
Apr 4, 11:06 PM EDT	Severe Thunderstorm Warning	GSP	Henderson, Jackson, Macon, Transylvania	54 min
Apr 4, 11:25 PM EDT	Severe Thunderstorm Warning	GSP	Avery, Buncombe, Burke, Caldwell, McDowell, Madison and 2 more	65 min
Apr 4, 11:43 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, Burke, Caldwell, Henderson, McDowell, Polk and 1 more	62 min
Apr 4, 11:52 PM EDT	Tornado Warning	GSP	Buncombe, Henderson, McDowell, Rutherford	38 min
Apr 4, 11:59 PM EDT	Severe Thunderstorm Warning	GSP	Polk	46 min
Apr 5, 12:22 AM EDT	Severe Thunderstorm Warning	GSP	Alexander, Burke, Caldwell, Catawba	53 min
Apr 5, 12:28 AM EDT	Tornado Warning	GSP	Burke, Cleveland, Rutherford	32 min
Apr 5, 12:46 AM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Gaston, Polk, Rutherford	59 min
Apr 5, 1:12 AM EDT	Severe Thunderstorm Warning	GSP	Burke, Catawba, Cleveland, Iredell, Lincoln	63 min
Apr 5, 1:14 AM EDT	Severe Thunderstorm Warning	GSP	Alexander, Davie, Iredell	61 min
Apr 5, 1:29 AM EDT	Tornado Warning	GSP	Catawba, Lincoln	27 min
Apr 5, 1:44 AM EDT	Severe Thunderstorm Warning	GSP	Catawba, Davie, Iredell, Rowan	61 min
Apr 5, 1:53 AM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Mecklenburg, Union	67 min
Apr 5, 4:08 AM EDT	Frost Advisory	GSP	Alexander, Burke, Cabarrus, Caldwell, Catawba, Cleveland and 10 more	29 hr
Apr 5, 4:08 AM EDT	Freeze Warning	GSP	Avery, Buncombe, Burke, Caldwell, Graham, Haywood and 11 more	29 hr

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.