Alert archive / North Carolina / Tornado Watches in 2010
Tornado Watch 39
The Storm Prediction Center issued this tornado watch at Mar 28, 2010, 10:58 PM EDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 28, 2010, 10:58 PM EDT (02:58 UTC)
- Expired
- Mar 29, 2010, 5:00 AM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 88 counties
Baldwin County, GA, Burke County, GA, Columbia County, GA, Glascock County, GA, Hancock County, GA, Jefferson County, GA, Johnson County, GA, Jones County, GA, Lincoln County, GA, McDuffie County, GA, Richmond County, GA, Twiggs County, GA, Warren County, GA, Washington County, GA, Wilkinson County, GA, Alamance County, NC, Anson County, NC, Bladen County, NC, Cabarrus County, NC, Caswell County, NC, Chatham County, NC, Cumberland County, NC, Davidson County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Granville County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Robeson 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, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Dillon County, SC, Edgefield County, SC, Fairfield County, SC, Florence County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, Marlboro County, SC, McCormick County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC, Union County, SC, York County, SC, Brunswick County, VA, Charlotte County, VA, City of Emporia, VA, Greensville County, VA, Halifax County, VA, Lunenburg County, VA, Mecklenburg County, VA
The radar
The Raleigh/Durham radar (KRAX), 131 km from the middle of the area, began a volume at 03:01 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- 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 |
|---|---|---|---|---|
| Mar 28, 11:13 PM EDT | Severe Thunderstorm Warning | FFC | Hancock, Warren | 47 min |
| Mar 28, 11:16 PM EDT | Tornado Warning | CAE | Lexington, Saluda | 44 min |
| Mar 28, 11:21 PM EDT | Severe Thunderstorm Warning | RAH | Alamance, Durham, Orange, Person | 54 min |
| Mar 28, 11:26 PM EDT | Tornado Warning | RAH | Alamance, Durham, Orange, Person | 49 min |
| Mar 28, 11:30 PM EDT | Severe Thunderstorm Warning | CAE | Lincoln | 45 min |
| Mar 28, 11:48 PM EDT | Tornado Warning | CAE | Fairfield, Lexington, Richland | 42 min |
| Mar 28, 11:56 PM EDT | Tornado Warning | RAH | Durham, Granville, Person | 34 min |
| Mar 29, 12:15 AM EDT | Severe Thunderstorm Warning | CAE | Fairfield, Lancaster | 45 min |
| Mar 29, 12:24 AM EDT | Flash Flood Warning | RAH | Guilford | 3 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Roanoke, VA (KRNK), launched 00:00Z, 3.0 hours before the alert went out and 217 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 443 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 182 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
336
WWUS20 KWNS 290258
SEL9
SPC WW 290258
GAZ000-NCZ000-SCZ000-VAZ000-290900-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 39
NWS STORM PREDICTION CENTER NORMAN OK
1100 PM EDT SUN MAR 28 2010
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EAST CENTRAL GEORGIA
CENTRAL NORTH CAROLINA
CENTRAL SOUTH CAROLINA
SOUTH CENTRAL VIRGINIA
EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1100 PM UNTIL
500 AM EDT.
TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 30 MILES NORTH NORTHEAST OF
ROCKY MOUNT NORTH CAROLINA TO 65 MILES WEST OF AUGUSTA GEORGIA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU9).
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 37...TORNADO WATCH NUMBER 38. WATCH NUMBER 37 38
WILL NOT BE IN EFFECT AFTER 1100 PM EDT.
DISCUSSION...BROKEN BANDS OF STRONG/SEVERE STORMS WILL PERSIST
OVERNIGHT ALONG THE STALLED WEDGE FRONT ACROSS THE PIEDMONT OF
NC/SC...AND ALONG A PRE-FRONTAL CONFLUENCE BAND FROM CENTRAL GA INTO
SC. INSTABILITY WILL REMAIN AT LEAST MARGINALLY SUFFICIENT FOR
SURFACE-BASED STORMS CAPABLE OF PRODUCING LARGE HAIL/DAMAGING
WINDS...WHILE STRONG LOW-LEVEL SHEAR WILL FAVOR THE POTENTIAL FOR A
COUPLE OF TORNADOES WITH THE STRONGER SUPERCELLS.
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
350. MEAN STORM MOTION VECTOR 24040.
...THOMPSONSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 10:13 PM EDT | Mesoscale Discussion | SPC | Baldwin, Bibb, Bleckley, Burke, Butts, Columbia and 23 more | 62 min |
| Mar 29, 12:25 AM EDT | Mesoscale Discussion | SPC | Burke, Columbia, Glascock, Jefferson, Jenkins, Lincoln and 4 more | 95 min |
| Mar 29, 1:54 AM EDT | Mesoscale Discussion | SPC | Camden, Chowan, Currituck, Gates, Hertford, Northampton and 2 more | 36 min |
| Mar 29, 3:01 AM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Carteret, Columbus, Craven, Duplin and 7 more | 29 min |
| Mar 29, 3:20 PM EDT | Mesoscale Discussion | SPC | Bladen, Columbus, Cumberland, Hoke, Robeson, Sampson and 1 more | 115 min |
Nearby
Tornado Watches in North Carolina, 2010Tornado Watches in South Carolina, 2010Tornado Watches in Georgia, 2010Every tornado watch in 2010
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.