Alert archive / North Carolina / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 59
The Storm Prediction Center issued this severe thunderstorm watch at Mar 1, 2017, 3:02 PM EST for 4 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 1, 2017, 3:02 PM EST (20:02 UTC)
- Expired
- Mar 1, 2017, 10:00 PM EST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 75 counties
Elbert County, GA, Franklin County, GA, Habersham County, GA, Hart County, GA, Rabun County, GA, Stephens County, GA, Alamance County, NC, Alexander County, NC, Anson County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Caswell County, NC, Catawba County, NC, Chatham County, NC, Cleveland County, NC, Davidson County, NC, Davie County, NC, Durham County, NC, Forsyth County, NC, Gaston County, NC, Graham County, NC, Guilford County, NC, Haywood County, NC, Henderson County, NC, Iredell County, NC, Jackson County, NC, Lee County, NC, Lincoln County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mecklenburg County, NC, Mitchell County, NC, Montgomery County, NC, Moore County, NC, Orange County, NC, Person County, NC, Polk County, NC, Randolph County, NC, Richmond County, NC, Rockingham County, NC, Rowan County, NC, Rutherford County, NC, Stanly County, NC, Stokes County, NC, Surry County, NC, Swain County, NC, Transylvania County, NC, Union County, NC, Wilkes County, NC, Yadkin County, NC, Yancey County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Fairfield County, SC, Greenville County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Newberry County, SC, Oconee County, SC, Pickens County, SC, Spartanburg County, SC, Union County, SC, York County, SC, City of Danville, VA, Halifax County, VA, Pittsylvania County, VA
The radar
The Greer radar (KGSP), 78 km from the middle of the area, began a volume at 20:03 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
- 20%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
22 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 1, 4:17 PM EST | Severe Thunderstorm Warning | GSP | Graham, Swain | 43 min |
| Mar 1, 4:34 PM EST | Severe Thunderstorm Warning | GSP | Burke, Caldwell, Catawba, McDowell | 41 min |
| Mar 1, 4:40 PM EST | Tornado Warning | GSP | Burke, Catawba | 35 min |
| Mar 1, 5:03 PM EST | Severe Thunderstorm Warning | GSP | Cleveland, Polk, Rutherford | 42 min |
| Mar 1, 5:07 PM EST | Tornado Warning | GSP | Alexander, Catawba, Iredell | 38 min |
| Mar 1, 5:09 PM EST | Severe Thunderstorm Warning | GSP | Franklin, Habersham, Stephens | 51 min |
| Mar 1, 5:40 PM EST | Severe Thunderstorm Warning | GSP | Davie, Iredell, Rowan | 35 min |
| Mar 1, 5:45 PM EST | Severe Thunderstorm Warning | GSP | Cleveland, Gaston, Lincoln | 45 min |
| Mar 1, 5:50 PM EST | Severe Thunderstorm Warning | GSP | Franklin, Hart, Stephens | 40 min |
| Mar 1, 5:59 PM EST | Severe Thunderstorm Warning | RAH | Davidson, Forsyth, Guilford, Randolph | 61 min |
| Mar 1, 6:19 PM EST | Severe Thunderstorm Warning | GSP | Cabarrus, Gaston, Iredell, Lincoln, Mecklenburg, Rowan | 56 min |
| Mar 1, 6:29 PM EST | Severe Thunderstorm Warning | GSP | Abbeville, Anderson, Greenville, Laurens, Pickens, Spartanburg | 46 min |
| Mar 1, 6:33 PM EST | Severe Thunderstorm Warning | GSP | Anderson, Greenville, Pickens, Spartanburg | 27 min |
| Mar 1, 6:47 PM EST | Severe Thunderstorm Warning | RAH | Alamance, Chatham, Guilford, Orange, Randolph | 43 min |
| Mar 1, 7:10 PM EST | Severe Thunderstorm Warning | GSP | Cherokee, Greenville, Laurens, Spartanburg, Union | 50 min |
| Mar 1, 7:11 PM EST | Severe Thunderstorm Warning | RAH | Davidson, Montgomery, Randolph, Stanly | 49 min |
| Mar 1, 7:11 PM EST | Severe Thunderstorm Warning | CAE | Fairfield, Newberry | 79 min |
| Mar 1, 7:12 PM EST | Severe Thunderstorm Warning | GSP | Cabarrus, Gaston, Mecklenburg, Union | 48 min |
| Mar 1, 7:45 PM EST | Severe Thunderstorm Warning | GSP | Cabarrus, Gaston, Mecklenburg, Union | 75 min |
| Mar 1, 7:57 PM EST | Severe Thunderstorm Warning | RAH | Montgomery, Moore, Randolph, Stanly | 48 min |
| Mar 1, 8:15 PM EST | Severe Thunderstorm Warning | CAE | Kershaw, Lancaster | 45 min |
| Mar 1, 8:17 PM EST | Severe Thunderstorm Warning | RAH | Chatham, Wake | 43 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, 8.0 hours before the alert went out and 189 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
- 27 J/kg
- Mixed-layer CIN
- -165 J/kg
- Mixed-layer LCL
- 878 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 312 m²/s²
- 0-3 km storm-relative helicity
- 375 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 1, 11:08 AM EST | Mesoscale Discussion | SPC | Bartow, Catoosa, Chattooga, Dade, Fannin, Floyd and 6 more | 2 hr |
| Mar 1, 12:48 PM EST | Tornado Watch | SPC | Bartow, Catoosa, Chattooga, Cherokee, Dade, Dawson and 13 more | 6 hr |
| Mar 1, 2:07 PM EST | Mesoscale Discussion | SPC | Rabun | 113 min |
| Mar 1, 3:11 PM EST | Mesoscale Discussion | SPC | Bartow, Catoosa, Chattooga, Cherokee, Dade, Fannin and 9 more | 2 hr |
| Mar 1, 3:43 PM EST | Mesoscale Discussion | SPC | Barrow, Butts, Carroll, Clarke, Clayton, Cobb and 28 more | 3 hr |
| Mar 1, 4:43 PM EST | Severe Thunderstorm Watch | SPC | Banks, Barrow, Carroll, Clarke, Clayton, Cobb and 22 more | 4 hr |
| Mar 1, 6:54 PM EST | Mesoscale Discussion | SPC | Banks, Barrow, Butts, Carroll, Clarke, Clayton and 31 more | 2 hr |
| Mar 1, 9:44 AM EST | Mesoscale Discussion | SPC | Alamance, Alleghany, Ashe, Caswell, Forsyth, Granville and 8 more | 91 min |
| Mar 1, 10:38 AM EST | Severe Thunderstorm Watch | SPC | Alleghany, Ashe, Caswell, Rockingham, Stokes, Surry and 3 more | 4 hr |
| Mar 1, 12:25 PM EST | Mesoscale Discussion | SPC | Alleghany, Rockingham, Stokes, Surry | 65 min |
| Mar 1, 12:50 PM EST | Mesoscale Discussion | SPC | Gates, Granville, Halifax, Hertford, Northampton, Vance and 1 more | 55 min |
| Mar 1, 6:21 PM EST | Mesoscale Discussion | SPC | Alamance, Anson, Beaufort, Bertie, Bladen, Cabarrus and 40 more | 114 min |
| Feb 28, 8:46 PM EST | Mesoscale Discussion | SPC | Crockett, Dyer, Gibson, Henry, Lake, Lauderdale and 3 more | 119 min |
| Feb 28, 9:29 PM EST | Tornado Watch | SPC | Carroll, Crockett, Dyer, Gibson, Haywood, Henry and 6 more | 12 hr |
| Mar 1, 3:09 AM EST | Mesoscale Discussion | SPC | Crockett, Dyer, Fayette, Gibson, Haywood, Henry and 6 more | 2 hr |
| Mar 1, 4:03 AM EST | Tornado Watch | SPC | Benton, Carroll, Chester, Crockett, Decatur, Dyer and 15 more | 5 hr |
| Mar 1, 5:19 AM EST | Mesoscale Discussion | SPC | Bedford, Benton, Cannon, Carroll, Cheatham, Chester and 57 more | 56 min |
| Mar 1, 5:57 AM EST | Tornado Watch | SPC | Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 32 more | 5 hr |
| Mar 1, 6:28 AM EST | Mesoscale Discussion | SPC | Anderson, Bedford, Benton, Bledsoe, Campbell, Cannon and 57 more | 2 hr |
| Mar 1, 7:47 AM EST | Severe Thunderstorm Watch | SPC | Anderson, Bledsoe, Blount, Campbell, Carter, Claiborne and 23 more | 5 hr |
| Mar 1, 8:28 AM EST | Mesoscale Discussion | SPC | Anderson, Bedford, Bledsoe, Campbell, Cannon, Claiborne and 37 more | 92 min |
| Mar 1, 1:13 PM EST | Severe Thunderstorm Watch | SPC | Accomack, Amelia, Caroline, Charles City, Chesterfield, Cumberland and 29 more | 4 hr |
| Mar 1, 2:50 PM EST | Mesoscale Discussion | SPC | Accomack, Charles City, Chesterfield, Gloucester, Henrico, James City and 16 more | 55 min |
Nearby
Severe Thunderstorm Watches in North Carolina, 2017Severe Thunderstorm Watches in South Carolina, 2017Severe Thunderstorm Watches in Georgia, 2017Every severe thunderstorm watch in 2017
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.