Alert archive / North Carolina / Tornado Watches in 2016

Tornado Watch 29

February 24, 201642 counties in North Carolina; Horry County, South Carolina

The Storm Prediction Center issued this tornado watch at Feb 24, 2016, 6:50 PM EST for 42 counties in North Carolina; Horry County, South Carolina. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Feb 24, 2016, 6:50 PM EST (23:50 UTC)
Expired
Feb 24, 2016, 11:00 PM EST
In force
4 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
65 kt
All 43 counties

Beaufort County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Camden County, NC, Carteret County, NC, Chowan County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Currituck County, NC, Dare County, NC, Duplin County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, Nash County, NC, New Hanover County, NC, Northampton County, NC, Onslow County, NC, Pamlico County, NC, Pasquotank County, NC, Pender County, NC, Perquimans County, NC, Pitt County, NC, Robeson County, NC, Sampson County, NC, Tyrrell County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Horry County, SC

The radar

The Morehead City radar (KMHX), 78 km from the middle of the area, began a volume at 23:49 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
70%
One or more EF2 to EF5 tornadoes
60%
Ten or more severe wind reports
60%
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
10%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Feb 24, 6:51 PM ESTSevere Thunderstorm WarningAKQNorthampton24 min
Feb 24, 7:09 PM ESTTornado WarningAKQBertie, Gates, Hertford, Northampton36 min
Feb 24, 7:29 PM ESTSevere Thunderstorm WarningAKQHertford, Northampton31 min
Feb 24, 7:40 PM ESTTornado WarningAKQBertie, Camden, Gates, Hertford, Northampton, Pasquotank35 min
Feb 24, 8:13 PM ESTTornado WarningAKQGates32 min
Feb 24, 8:45 PM ESTTornado WarningAKQGates, Hertford30 min
Feb 24, 9:58 PM ESTSevere Thunderstorm WarningMHXDare, Hyde62 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

Newport, NC (KMHX), launched 12:00Z, 11.8 hours before the alert went out and 78 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, Newport, NC at 12:00Z on 2016-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 502 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Newport, NC at 12:00Z on 2016-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 333 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
502 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
595 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
333 m²/s²
0-3 km storm-relative helicity
386 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

Open this sounding in Storm Lab

The text

As transmitted.

119 
WWUS20 KWNS 242345
SEL9  
SPC WW 242345
NCZ000-SCZ000-CWZ000-250400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 29
NWS STORM PREDICTION CENTER NORMAN OK
620 PM EST WED FEB 24 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  EASTERN NORTH CAROLINA
  FAR NORTHEAST SOUTH CAROLINA
  COASTAL WATERS

* EFFECTIVE THIS WEDNESDAY EVENING FROM 620 PM UNTIL 1100 PM EST.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES AND A COUPLE INTENSE TORNADOES LIKELY
  SCATTERED DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS
    TO 75 MPH POSSIBLE

SUMMARY...SCATTERED SUPERCELLS WITH THE THREAT FOR TORNADOES...ONE
OR TWO OF WHICH COULD BE STRONG...IN ADDITION TO DAMAGING WIND AND
SEVERE HAIL EXPECTED TO PERSIST THROUGH LATER TONIGHT EASTWARD TO
THE NORTH CAROLINA COASTAL WATERS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH NORTHEAST OF
ELIZABETH CITY NORTH CAROLINA TO 30 MILES SOUTH OF WILMINGTON
NORTH CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).

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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 26. WATCH NUMBER 26 WILL NOT BE IN EFFECT AFTER 620
PM EST. CONTINUE...WW 27...WW 28...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 22050.


...CORFIDI

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, 11:16 AM ESTTornado WatchSPCAlamance, Alexander, Anson, Bladen, Brunswick, Cabarrus and 52 more8 hr
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, 3:58 AM ESTTornado WatchSPCAllendale6 hr
Feb 24, 6:48 AM ESTMesoscale DiscussionSPCAllendale, Beaufort, Colleton, Hampton, Jasper87 min

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.