Alert archive / North Carolina / Tornado Watches in 2008
Tornado Watch 66
The Storm Prediction Center issued this tornado watch at Feb 18, 2008, 2:30 AM EST for 32 counties in North Carolina; 8 counties in South Carolina. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 18, 2008, 2:30 AM EST (07:30 UTC)
- Expired
- Feb 18, 2008, 9:59 AM EST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 40 counties
Beaufort County, NC, Bladen County, NC, Brunswick County, NC, Carteret County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Dare County, NC, Duplin County, NC, Edgecombe County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, Nash County, NC, New Hanover County, NC, Onslow County, NC, Pamlico County, NC, Pender County, NC, Pitt County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Tyrrell County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Darlington County, SC, Dillon County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC
The radar
The Wilmington radar (KLTX), 80 km from the middle of the area, began a volume at 07:29 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
- 5%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 2:45 AM EST | Tornado Warning | ILM | Robeson | 30 min |
| Feb 18, 2:58 AM EST | Severe Thunderstorm Warning | RAH | Wayne | 47 min |
| Feb 18, 3:11 AM EST | Tornado Warning | RAH | Wayne | 34 min |
| Feb 18, 3:26 AM EST | Tornado Warning | ILM | Bladen | 19 min |
| Feb 18, 3:35 AM EST | Severe Thunderstorm Warning | MHX | Lenoir | 25 min |
| Feb 18, 3:38 AM EST | Severe Thunderstorm Warning | RAH | Sampson | 37 min |
| Feb 18, 4:32 AM EST | Severe Thunderstorm Warning | MHX | Duplin | 43 min |
| Feb 18, 4:56 AM EST | Severe Thunderstorm Warning | MHX | Washington | 34 min |
| Feb 18, 4:58 AM EST | Severe Thunderstorm Warning | MHX | Jones | 47 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 00:00Z, 7.5 hours before the alert went out and 129 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
- 3 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 992 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 180729
SEL6
SPC WW 180729
NCZ000-SCZ000-CWZ000-181600-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 66
NWS STORM PREDICTION CENTER NORMAN OK
230 AM EST MON FEB 18 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EASTERN NORTH CAROLINA
NORTHEASTERN SOUTH CAROLINA
COASTAL WATERS
EFFECTIVE THIS MONDAY MORNING FROM 230 AM UNTIL 1100 AM EST.
TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTHEAST OF FLORENCE
SOUTH CAROLINA TO 65 MILES NORTH NORTHWEST OF CAPE HATTERAS NORTH
CAROLINA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).
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.
DISCUSSION...REMAINS OF SQLN THAT AFFECTED AL/GA SUNDAY AFTN ARE
MOVING E INTO THE SC/NC CSTL PLN ATTM INVOF FLO/FAY. THIS ACTIVITY
MAY INCREASE IN STRENGTH AND COVERAGE AS IT ENCOUNTERS LOW-LEVEL
MOISTURE AXIS ASSOCIATED WITH WELL-DEFINED SLY LLJ ORIENTED ROUGHLY
BETWEEN MYR AND HAT. GIVEN INTENSE LOW TO MID-LEVEL SPEED SHEAR AND
LIKELIHOOD FOR INCREASING LARGE SCALE ASCENT ASSOCIATED WITH
APPROACHING UPR TROUGH...THREAT WILL EXIST FOR SUSTAINED SUPERCELLS
WITH LOCALLY DAMAGING WIND AND TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.
MEAN STORM MOTION VECTOR 22050.
...CORFIDISPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 2:04 AM EST | Mesoscale Discussion | SPC | Beaufort, Bertie, Bladen, Brunswick, Carteret, Chowan and 22 more | 26 min |
| Feb 18, 3:45 AM EST | Mesoscale Discussion | SPC | Camden, Chowan, Currituck, Gates, Hertford, Northampton and 2 more | 30 min |
| Feb 18, 3:59 AM EST | Tornado Watch | SPC | Bertie, Camden, Chowan, Currituck, Gates, Hertford and 3 more | 6 hr |
| Feb 18, 6:18 AM EST | Mesoscale Discussion | SPC | Beaufort, Brunswick, Camden, Carteret, Chowan, Craven and 12 more | 57 min |
| Feb 17, 8:34 PM EST | Mesoscale Discussion | SPC | Aiken, Allendale, Barnwell, Edgefield, McCormick, Saluda | 56 min |
| Feb 17, 11:35 PM EST | Mesoscale Discussion | SPC | Aiken, Allendale, Bamberg, Barnwell, Calhoun, Clarendon and 7 more | 85 min |
Nearby
Tornado Watches in North Carolina, 2008Tornado Watches in South Carolina, 2008Every tornado watch in 2008
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.