Alert archive / North Carolina / Tornado Watches in 2014
Tornado Watch 448
The Storm Prediction Center issued this tornado watch at Jul 27, 2014, 6:32 PM EDT for 33 counties in North Carolina. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 27, 2014, 6:32 PM EDT (22:32 UTC)
- Expired
- Jul 28, 2014, 1:00 AM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 33 counties
Alexander County, NC, Alleghany County, NC, Ashe County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Davie County, NC, Gaston County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Iredell County, NC, Jackson County, NC, Lincoln County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mecklenburg County, NC, Mitchell County, NC, Polk County, NC, Rowan County, NC, Rutherford County, NC, Surry County, NC, Swain County, NC, Transylvania County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Yancey County, NC
The radar
The Greer radar (KGSP), 100 km from the middle of the area, began a volume at 22:33 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
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 6:45 PM EDT | Tornado Warning | GSP | Avery | 29 min |
| Jul 27, 7:19 PM EDT | Severe Thunderstorm Warning | RNK | Ashe, Watauga | 56 min |
| Jul 27, 7:49 PM EDT | Severe Thunderstorm Warning | GSP | Alexander, Caldwell, Catawba, Iredell | 56 min |
| Jul 27, 8:03 PM EDT | Severe Thunderstorm Warning | GSP | Haywood, Madison, Swain | 57 min |
| Jul 27, 8:27 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Haywood, Jackson, Madison, Swain | 63 min |
| Jul 27, 8:49 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Henderson, McDowell, Polk, Rutherford, Transylvania | 56 min |
| Jul 27, 9:01 PM EDT | Severe Thunderstorm Warning | GSP | Graham, Haywood, Jackson, Swain | 59 min |
| Jul 27, 9:25 PM EDT | Severe Thunderstorm Warning | GSP | Cleveland, Polk, Rutherford | 65 min |
| Jul 27, 9:28 PM EDT | Severe Thunderstorm Warning | GSP | Haywood, Henderson, Jackson, Transylvania | 62 min |
| Jul 27, 9:54 PM EDT | Severe Thunderstorm Warning | GSP | Haywood, Jackson, Transylvania | 66 min |
| Jul 27, 9:58 PM EDT | Severe Thunderstorm Warning | GSP | Haywood, Jackson, Swain | 62 min |
| Jul 27, 10:48 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Haywood, Henderson, Transylvania | 27 min |
| Jul 27, 11:48 PM EDT | Severe Thunderstorm Warning | GSP | Haywood, Madison, Yancey | 57 min |
| Jul 28, 12:20 AM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Haywood, McDowell, Madison, Yancey | 55 min |
| Jul 28, 12:40 AM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Haywood, Jackson, Madison, Swain | 65 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, 10.5 hours before the alert went out and 200 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
- 116 J/kg
- Mixed-layer CIN
- -224 J/kg
- Mixed-layer LCL
- 1295 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -70 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
441 WWUS20 KWNS 272235 SEL8 SPC WW 272235 NCZ000-VAZ000-280500- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 448 NWS STORM PREDICTION CENTER NORMAN OK 635 PM EDT SUN JUL 27 2014 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF WESTERN NORTH CAROLINA SMALL PART OF SOUTHWESTERN VIRGINIA * EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 635 PM UNTIL 100 AM EDT. * PRIMARY THREATS INCLUDE... A FEW TORNADOES POSSIBLE ISOLATED VERY LARGE HAIL EVENTS TO 3 INCHES IN DIAMETER POSSIBLE ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES SOUTH SOUTHEAST OF ASHEVILLE NORTH CAROLINA TO 65 MILES NORTH NORTHEAST OF HICKORY NORTH CAROLINA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. && OTHER WATCH INFORMATION...CONTINUE...WW 445...WW 446...WW 447... DISCUSSION...POTENTIAL EXISTS FOR SUPERCELLS IN WW 445 TO SURVIVE PASSAGE THROUGH NARROW CORRIDOR OF RELATIVELY LOW-THETAE AIR MASS OVER HIGHEST APPALACHIANS AND MOVE INTO FAVORABLY MOIST/UNSTABLE ENVIRONMENT OF WRN PIEDMONT REGION...WHERE 50 KT EFFECTIVE-SHEAR MAGNITUDES AND 200-300 J/KG EFFECTIVE SRH WILL JUXTAPOSE WITH UPPER-60S/LOWER-70S F SFC DEW POINTS. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 30030. ...EDWARDS
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 10:08 AM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Bladen, Camden, Chowan, Craven and 28 more | 67 min |
| Jul 27, 4:49 PM EDT | Mesoscale Discussion | SPC | Alexander, Alleghany, Ashe, Avery, Burke, Caldwell and 13 more | 116 min |
| Jul 27, 1:00 PM EDT | Tornado Watch | SPC | Anderson, Blount, Campbell, Carter, Claiborne, Clay and 25 more | 11 hr |
| Jul 27, 3:14 PM EDT | Mesoscale Discussion | SPC | Anderson, Campbell, Carter, Claiborne, Clay, Fentress and 22 more | 2 hr |
| Jul 27, 7:28 PM EDT | Mesoscale Discussion | SPC | Anderson, Campbell, Claiborne, Clay, Cocke, Fentress and 16 more | 92 min |
Nearby
Tornado Watches in North Carolina, 2014Every tornado watch in 2014
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.