Alert archive / North Carolina / Tornado Watches in 2016

Tornado Watch 26

February 24, 201658 counties in North Carolina; 27 counties in South Carolina

The Storm Prediction Center issued this tornado watch at Feb 24, 2016, 11:16 AM EST for 58 counties in North Carolina; 27 counties in South Carolina. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Feb 24, 2016, 11:16 AM EST (16:16 UTC)
Expired
Feb 24, 2016, 7:00 PM EST
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 85 counties

Alamance County, NC, Alexander County, NC, Anson County, NC, Bladen County, NC, Brunswick County, NC, Cabarrus County, NC, Caswell County, NC, Catawba County, NC, Chatham County, NC, Cleveland County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Davidson County, NC, Davie County, NC, Duplin County, NC, Durham County, NC, Edgecombe County, NC, Forsyth County, NC, Franklin County, NC, Gaston County, NC, Granville County, NC, Greene County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Iredell County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Lincoln County, NC, Martin County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, New Hanover County, NC, Onslow County, NC, Orange County, NC, Pender County, NC, Person County, NC, Pitt County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Rockingham County, NC, Rowan County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Union County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC, Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Dillon County, SC, Edgefield County, SC, Fairfield County, SC, Florence County, SC, Horry County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, Marlboro County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC, Union County, SC, York County, SC

The radar

The Raleigh/Durham radar (KRAX), 149 km from the middle of the area, began a volume at 16:18 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
80%
One or more EF2 to EF5 tornadoes
60%
Ten or more severe wind reports
60%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

62 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Feb 24, 11:33 AM ESTTornado WarningGSPAlexander, Catawba, Iredell, Lincoln44 min
Feb 24, 11:51 AM ESTSevere Thunderstorm WarningGSPCatawba, Davie, Gaston, Iredell, Lincoln, Mecklenburg and 1 more54 min
Feb 24, 11:58 AM ESTSevere Thunderstorm WarningILMBladen, Columbus47 min
Feb 24, 12:03 PM ESTTornado WarningILMBladen, Columbus42 min
Feb 24, 12:13 PM ESTSevere Thunderstorm WarningGSPCabarrus, Davie, Gaston, Iredell, Mecklenburg, Rowan and 1 more62 min
Feb 24, 12:17 PM ESTSevere Thunderstorm WarningCAELancaster43 min
Feb 24, 12:36 PM ESTTornado WarningRAHSampson24 min
Feb 24, 12:39 PM ESTTornado WarningMHXDuplin36 min
Feb 24, 12:44 PM ESTSevere Thunderstorm WarningGSPDavie, Iredell, Rowan31 min
Feb 24, 12:45 PM ESTSevere Thunderstorm WarningRAHSampson9 min
Feb 24, 1:03 PM ESTTornado WarningRAHWayne27 min
Feb 24, 1:04 PM ESTSevere Thunderstorm WarningRAHDavidson, Forsyth, Guilford, Randolph56 min
Feb 24, 1:06 PM ESTTornado WarningMHXDuplin, Lenoir39 min
Feb 24, 1:08 PM ESTSevere Thunderstorm WarningCAELancaster37 min
Feb 24, 1:14 PM ESTSevere Thunderstorm WarningGSPCabarrus, Davie, Mecklenburg, Rowan, Union46 min
Feb 24, 1:20 PM ESTSevere Thunderstorm WarningMHXGreene, Lenoir, Pitt40 min
Feb 24, 1:21 PM ESTSevere Thunderstorm WarningRNKRockingham, Stokes39 min
Feb 24, 1:30 PM ESTTornado WarningMHXGreene, Lenoir, Pitt30 min
Feb 24, 1:32 PM ESTSevere Thunderstorm WarningRAHEdgecombe, Wilson43 min
Feb 24, 1:37 PM ESTSevere Thunderstorm WarningRNKRockingham53 min
Feb 24, 1:43 PM ESTSevere Thunderstorm WarningRAHAnson, Montgomery, Richmond, Stanly47 min
Feb 24, 1:53 PM ESTTornado WarningMHXMartin, Pitt26 min
Feb 24, 1:55 PM ESTSevere Thunderstorm WarningRNKCaswell, Rockingham65 min
Feb 24, 1:59 PM ESTSevere Thunderstorm WarningRAHDavidson, Forsyth, Guilford, Randolph46 min
Feb 24, 2:25 PM ESTSevere Thunderstorm WarningRAHAnson, Montgomery, Richmond, Stanly65 min
Feb 24, 2:26 PM ESTSevere Thunderstorm WarningRNKCaswell, Rockingham64 min
Feb 24, 2:44 PM ESTSevere Thunderstorm WarningRAHAlamance, Chatham, Guilford, Randolph61 min
Feb 24, 2:54 PM ESTTornado WarningRNKCaswell36 min
Feb 24, 3:00 PM ESTSevere Thunderstorm WarningRAHMoore60 min
Feb 24, 3:03 PM ESTTornado WarningCAEChesterfield42 min
Feb 24, 3:09 PM ESTTornado WarningRAHChatham, Lee, Moore, Randolph33 min
Feb 24, 3:11 PM ESTTornado WarningRAHChatham, Lee, Randolph34 min
Feb 24, 3:21 PM ESTSevere Thunderstorm WarningRNKCaswell, Rockingham54 min
Feb 24, 3:30 PM ESTSevere Thunderstorm WarningRAHAnson, Richmond45 min
Feb 24, 3:35 PM ESTTornado WarningRAHAlamance, Chatham, Durham, Orange40 min
Feb 24, 3:43 PM ESTSevere Thunderstorm WarningRAHChatham, Durham, Granville, Orange, Person62 min
Feb 24, 3:47 PM ESTTornado WarningRAHHoke, Moore, Richmond, Scotland43 min
Feb 24, 3:53 PM ESTTornado WarningRAHChatham, Lee, Moore37 min
Feb 24, 3:56 PM ESTSevere Thunderstorm WarningCAEChesterfield19 min
Feb 24, 3:59 PM ESTTornado WarningRAHGranville, Person19 min
Feb 24, 4:04 PM ESTTornado WarningRAHDurham, Granville, Person, Vance56 min
Feb 24, 4:05 PM ESTSevere Thunderstorm WarningILMRobeson40 min
Feb 24, 4:13 PM ESTTornado WarningRAHChatham, Durham, Orange47 min
Feb 24, 4:20 PM ESTTornado WarningRAHChatham, Harnett, Lee, Wake40 min
Feb 24, 4:36 PM ESTSevere Thunderstorm WarningRAHDurham, Franklin, Granville, Harnett, Vance, Wake and 1 more69 min
Feb 24, 4:40 PM ESTSevere Thunderstorm WarningILMRobeson65 min
Feb 24, 4:42 PM ESTTornado WarningILMRobeson48 min
Feb 24, 5:01 PM ESTSevere Thunderstorm WarningMHXBeaufort, Craven, Hyde, Martin, Pamlico, Washington30 min
Feb 24, 5:03 PM ESTTornado WarningRAHFranklin, Granville, Vance, Warren26 min
Feb 24, 5:04 PM ESTTornado WarningRAHCumberland, Harnett, Hoke, Sampson26 min
Feb 24, 5:21 PM ESTTornado Warning EmergencyRAHCumberland, Harnett, Sampson39 min
Feb 24, 5:21 PM ESTTornado WarningRAHVance, Warren24 min
Feb 24, 5:22 PM ESTTornado WarningRAHFranklin, Vance, Wake23 min
Feb 24, 5:31 PM ESTSevere Thunderstorm WarningRAHDurham, Wake44 min
Feb 24, 5:41 PM ESTTornado WarningRAHFranklin, Vance, Wake, Warren49 min
Feb 24, 5:44 PM ESTTornado WarningILMBladen, Robeson46 min
Feb 24, 5:52 PM ESTTornado WarningRAHJohnston, Wayne38 min
Feb 24, 5:58 PM ESTTornado WarningRAHCumberland, Sampson32 min
Feb 24, 6:13 PM ESTSevere Thunderstorm WarningRAHDurham, Franklin, Granville, Vance, Wake, Warren62 min
Feb 24, 6:25 PM ESTSevere Thunderstorm WarningRAHEdgecombe, Wayne, Wilson50 min
Feb 24, 6:29 PM ESTTornado WarningRAHJohnston, Sampson, Wayne, Wilson21 min
Feb 24, 6:37 PM ESTSevere Thunderstorm WarningRAHSampson23 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, 4.3 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 2016-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2016-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 703 square meters per square second.19395878Sfc1 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
4 J/kg
Mixed-layer CIN
-286 J/kg
Mixed-layer LCL
406 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
703 m²/s²
0-3 km storm-relative helicity
750 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

The text

As transmitted.

207 
WWUS20 KWNS 241615
SEL6  
SPC WW 241615
NCZ000-SCZ000-250000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 26
NWS STORM PREDICTION CENTER NORMAN OK
1115 AM EST WED FEB 24 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  MOST OF NORTH CAROLINA
  CENTRAL AND NORTHERN SOUTH CAROLINA

* EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1115 AM UNTIL
  700 PM EST.

* PRIMARY THREATS INCLUDE...
  SEVERAL TORNADOES AND A COUPLE INTENSE TORNADOES LIKELY
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY
  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

SUMMARY...TWO AREAS OF SEVERE STORMS SHOULD EVOLVE NORTHEASTWARD
THROUGH THIS AFTERNOON. PRIMARY AREA OF STORMS WITHIN A QUASI-LINEAR
BAND SHOULD SPREAD ACROSS THE PIEDMONT WITH TORNADOES AND DAMAGING
WINDS AS THE MAIN HAZARDS. A SECONDARY AREA OF SPORADIC TORNADO/WIND
POTENTIAL MAY PERSIST ACROSS PARTS OF THE COASTAL PLAIN IN SOUTHERN
NORTH CAROLINA.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 125 STATUTE
MILES EITHER SIDE OF A LINE FROM 5 MILES WEST OF GREENSBORO NORTH
CAROLINA TO 40 MILES EAST OF FLORENCE SOUTH CAROLINA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU6).

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.

&&

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 21040.


...GRAMS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 24, 8:14 AM ESTMesoscale DiscussionSPCAvery, Buncombe, Cherokee, Clay, Graham, Haywood and 10 more2 hr
Feb 24, 10:46 AM ESTMesoscale DiscussionSPCAlamance, Alexander, Anson, Burke, Cabarrus, Caldwell and 36 more119 min
Feb 24, 11:16 AM ESTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 28 more89 min
Feb 24, 1:18 PM ESTMesoscale DiscussionSPCAlamance, Caswell, Durham, Franklin, Granville, Guilford and 9 more117 min
Feb 24, 1:46 PM ESTTornado WatchSPCBeaufort, Bertie, Camden, Carteret, Chowan, Currituck and 10 more9 hr
Feb 24, 2:55 PM ESTMesoscale DiscussionSPCAlamance, Anson, Bladen, Brunswick, Caswell, Chatham and 28 more95 min
Feb 24, 4:46 PM ESTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Camden, Chatham, Chowan and 35 more89 min
Feb 24, 6:40 PM ESTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Camden, Carteret, Chowan and 32 more2 hr
Feb 24, 6:50 PM ESTTornado WatchSPCBeaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 36 more4 hr
Feb 24, 3:58 AM ESTTornado WatchSPCAllendale6 hr
Feb 24, 6:48 AM ESTMesoscale DiscussionSPCAllendale, Beaufort, Colleton, Hampton, Jasper87 min
Feb 24, 3:06 PM ESTMesoscale DiscussionSPCArlington, Culpeper, Fairfax, Fauquier, King George, Loudoun and 10 more54 min
Feb 24, 3:20 PM ESTTornado WatchSPCArlington, Culpeper, Fairfax, Fauquier, King George, Loudoun and 10 more8 hr

Nearby

Tornado Watches in North Carolina, 2016Tornado Watches in South Carolina, 2016Every tornado watch in 2016

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.