Alert archive / North Carolina / Tornado Watches in 2010
Tornado Watch 735
The Storm Prediction Center issued this tornado watch at Oct 27, 2010, 2:06 PM EDT for 6 counties in Georgia; 27 counties in North Carolina; 16 counties in South Carolina. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 27, 2010, 2:06 PM EDT (18:06 UTC)
- Expired
- Oct 27, 2010, 8:34 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 49 counties
Columbia County, GA, Elbert County, GA, Franklin County, GA, Hart County, GA, Lincoln County, GA, McDuffie County, GA, Alamance County, NC, Anson County, NC, Cabarrus County, NC, Catawba County, NC, Chatham County, NC, Cleveland County, NC, Davidson County, NC, Davie County, NC, Durham County, NC, Forsyth County, NC, Franklin County, NC, Gaston County, NC, Granville County, NC, Guilford County, NC, Halifax County, NC, Iredell County, NC, Lincoln County, NC, Mecklenburg County, NC, Montgomery County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Rowan County, NC, Stanly County, NC, Union County, NC, Vance County, NC, Warren County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Edgefield County, SC, Fairfield County, SC, Greenville County, SC, Greenwood County, SC, Lancaster County, SC, Laurens County, SC, McCormick County, SC, Newberry County, SC, Saluda County, SC, Spartanburg County, SC, Union County, SC, York County, SC
The radar
The Greer radar (KGSP), 116 km from the middle of the area, began a volume at 18:09 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 27, 2:27 PM EDT | Tornado Warning | RAH | Guilford | 63 min |
| Oct 27, 2:28 PM EDT | Tornado Warning | GSP | Catawba, Iredell | 32 min |
| Oct 27, 2:34 PM EDT | Flash Flood Warning | RAH | Forsyth | 4 hr |
| Oct 27, 2:44 PM EDT | Severe Thunderstorm Warning | RAH | Forsyth | 16 min |
| Oct 27, 2:59 PM EDT | Tornado Warning | GSP | Davie, Iredell, Rowan | 46 min |
| Oct 27, 3:52 PM EDT | Tornado Warning | RAH | Person | 44 min |
| Oct 27, 4:20 PM EDT | Tornado Warning | RAH | Granville | 34 min |
| Oct 27, 4:46 PM EDT | Severe Thunderstorm Warning | RAH | Vance | 27 min |
| Oct 27, 4:48 PM EDT | Tornado Warning | GSP | Catawba, Cleveland, Gaston, Lincoln | 57 min |
| Oct 27, 4:52 PM EDT | Severe Thunderstorm Warning | RAH | Alamance, Guilford | 53 min |
| Oct 27, 5:15 PM EDT | Severe Thunderstorm Warning | RAH | Warren | 36 min |
| Oct 27, 5:29 PM EDT | Severe Thunderstorm Warning | RAH | Durham, Orange, Person | 42 min |
| Oct 27, 5:32 PM EDT | Severe Thunderstorm Warning | GSP | Anderson, Oconee, Pickens | 58 min |
| Oct 27, 5:33 PM EDT | Tornado Warning | RAH | Durham, Orange, Person | 42 min |
| Oct 27, 5:54 PM EDT | Severe Thunderstorm Warning | GSP | Hart | 66 min |
| Oct 27, 6:00 PM EDT | Tornado Warning | RAH | Granville, Person, Vance | 60 min |
| Oct 27, 6:24 PM EDT | Tornado Warning | GSP | Cleveland, Gaston, Lincoln, Rutherford | 66 min |
| Oct 27, 6:26 PM EDT | Tornado Warning | GSP | Catawba, Cleveland, Gaston, Lincoln | 64 min |
| Oct 27, 6:54 PM EDT | Tornado Warning | RAH | Vance, Warren | 32 min |
| Oct 27, 8:19 PM EDT | Severe Thunderstorm Warning | CAE | Edgefield, Newberry, Saluda | 56 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.1 hours before the alert went out and 138 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.
- Mixed-layer CAPE
- 237 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 315 m²/s²
- 0-3 km storm-relative helicity
- 322 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 10.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 26, 9:03 PM EDT | Tornado Watch | SPC | Banks, Barrow, Bartow, Carroll, Catoosa, Chattooga and 26 more | 8 hr |
| Oct 26, 11:05 PM EDT | Mesoscale Discussion | SPC | Franklin, Habersham, Rabun, Stephens | 55 min |
| Oct 26, 11:51 PM EDT | Mesoscale Discussion | SPC | Banks, Barrow, Bartow, Carroll, Chattooga, Cherokee and 30 more | 54 min |
| Oct 27, 12:24 AM EDT | Mesoscale Discussion | SPC | Franklin, Habersham, Rabun, Stephens | 66 min |
| Oct 27, 2:44 AM EDT | Tornado Watch | SPC | Franklin, Habersham, Hart, Rabun, Stephens | 7 hr |
| Oct 27, 5:28 AM EDT | Mesoscale Discussion | SPC | Franklin, Habersham, Hart, Rabun, Stephens, Towns and 2 more | 2 hr |
| Oct 27, 6:29 AM EDT | Mesoscale Discussion | SPC | Banks, Barrow, Bartow, Carroll, Chattooga, Cherokee and 26 more | 61 min |
| Oct 27, 6:48 AM EDT | Tornado Watch | SPC | Banks, Barrow, Bartow, Carroll, Chattooga, Cherokee and 34 more | 6 hr |
| Oct 27, 8:54 AM EDT | Mesoscale Discussion | SPC | Banks, Barrow, Bartow, Carroll, Chattooga, Cherokee and 33 more | 96 min |
| Oct 27, 10:40 AM EDT | Mesoscale Discussion | SPC | Banks, Barrow, Butts, Carroll, Clarke, Clayton and 33 more | 95 min |
| Oct 27, 12:49 PM EDT | Tornado Watch | SPC | Banks, Barrow, Butts, Carroll, Clarke, Clayton and 36 more | 7 hr |
| Oct 27, 3:41 PM EDT | Mesoscale Discussion | SPC | Baldwin, Banks, Barrow, Bartow, Butts, Carroll and 48 more | 64 min |
| Oct 27, 4:03 PM EDT | Mesoscale Discussion | SPC | Lincoln | 87 min |
| Oct 27, 7:40 PM EDT | Mesoscale Discussion | SPC | Crawford, Harris, Lamar, Meriwether, Muscogee, Pike and 4 more | 65 min |
| Oct 27, 7:53 PM EDT | Mesoscale Discussion | SPC | Columbia, Lincoln | 67 min |
| Oct 27, 11:54 AM EDT | Mesoscale Discussion | SPC | Granville, Person | 66 min |
| Oct 27, 12:13 PM EDT | Tornado Watch | SPC | Caswell, Northampton, Rockingham | 8 hr |
| Oct 27, 1:46 PM EDT | Mesoscale Discussion | SPC | Alamance, Anson, Cabarrus, Chatham, Davidson, Durham and 15 more | 89 min |
| Oct 27, 7:46 PM EDT | Tornado Watch | SPC | Caswell, Northampton, Rockingham | 8 hr |
| Oct 27, 3:21 PM EDT | Mesoscale Discussion | SPC | Accomack, Amelia, Brunswick, Buckingham, Caroline, Charles City and 40 more | 54 min |
| Oct 27, 4:48 PM EDT | Mesoscale Discussion | SPC | Amelia, Brunswick, Caroline, Charles City, Chesterfield, Dinwiddie and 24 more | 57 min |
| Oct 27, 7:16 PM EDT | Mesoscale Discussion | SPC | Accomack, Amelia, Appomattox, Brunswick, Buckingham, Caroline and 57 more | 59 min |
Nearby
Tornado Watches in North Carolina, 2010Tornado Watches in South Carolina, 2010Tornado Watches in Georgia, 2010Every tornado watch 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.