Alert archive / North Carolina / Tornado Watches in 2013
Tornado Watch 25
The Storm Prediction Center issued this tornado watch at Jan 30, 2013, 8:21 PM EST for 41 counties in North Carolina; 8 counties in South Carolina; 33 counties in Virginia. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 30, 2013, 8:21 PM EST (01:21 UTC)
- Expired
- Jan 31, 2013, 2:00 AM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 65 kt
All 82 counties
Alamance County, NC, Anson County, NC, Bladen County, NC, Brunswick County, NC, Caswell County, NC, Chatham County, NC, Columbus County, NC, Cumberland County, NC, Davidson County, NC, Durham County, NC, Edgecombe County, NC, Forsyth 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, Montgomery County, NC, Moore County, NC, Nash County, NC, New Hanover County, NC, Northampton County, NC, Orange County, NC, Pender County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Rockingham County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Stokes County, NC, Vance County, NC, Wake County, NC, Warren 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, Amelia County, VA, Appomattox County, VA, Brunswick County, VA, Buckingham County, VA, Campbell County, VA, Charles City County, VA, Charlotte County, VA, Chesterfield County, VA, City of Colonial Heights, VA, City of Danville, VA, City of Emporia, VA, City of Franklin, VA, City of Hopewell, VA, City of Lynchburg, VA, City of Martinsville, VA, City of Petersburg, VA, City of Richmond, VA, Cumberland County, VA, Dinwiddie County, VA, Greensville County, VA, Halifax County, VA, Henrico County, VA, Henry County, VA, Lunenburg County, VA, Mecklenburg County, VA, New Kent County, VA, Nottoway County, VA, Pittsylvania County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Southampton County, VA, Sussex County, VA
The radar
The Raleigh/Durham radar (KRAX), 60 km from the middle of the area, began a volume at 01:22 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
- 30%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 95%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 30, 8:22 PM EST | Severe Thunderstorm Warning | RNK | Rockingham, Stokes | 53 min |
| Jan 30, 8:45 PM EST | Severe Thunderstorm Warning | RAH | Anson, Montgomery, Richmond, Stanly | 60 min |
| Jan 30, 8:48 PM EST | Severe Thunderstorm Warning | RAH | Guilford, Randolph | 57 min |
| Jan 30, 9:11 PM EST | Severe Thunderstorm Warning | RNK | Caswell, Rockingham | 64 min |
| Jan 30, 9:40 PM EST | Severe Thunderstorm Warning | RAH | Alamance, Chatham, Guilford, Orange, Randolph | 80 min |
| Jan 30, 9:45 PM EST | Severe Thunderstorm Warning | ILM | Darlington, Florence, Marlboro | 60 min |
| Jan 30, 9:46 PM EST | Severe Thunderstorm Warning | RAH | Anson, Montgomery, Moore, Richmond, Stanly | 59 min |
| Jan 30, 10:21 PM EST | Severe Thunderstorm Warning | RAH | Granville, Person | 54 min |
| Jan 30, 10:29 PM EST | Severe Thunderstorm Warning | ILM | Florence, Williamsburg | 61 min |
| Jan 30, 10:42 PM EST | Severe Thunderstorm Warning | ILM | Darlington, Dillon, Florence, Marion, Marlboro | 63 min |
| Jan 30, 11:06 PM EST | Severe Thunderstorm Warning | ILM | Bladen, Robeson | 54 min |
| Jan 30, 11:25 PM EST | Severe Thunderstorm Warning | ILM | Dillon, Florence, Georgetown, Horry, Marion, Williamsburg | 80 min |
| Jan 30, 11:57 PM EST | Severe Thunderstorm Warning | ILM | Bladen, Brunswick, Columbus, Robeson | 63 min |
| Jan 31, 12:39 AM EST | Severe Thunderstorm Warning | RAH | Johnston, Sampson, Wayne, Wilson | 51 min |
| Jan 31, 12:44 AM EST | Severe Thunderstorm Warning | ILM | Bladen, Brunswick, Columbus, New Hanover, Pender | 61 min |
| Jan 31, 12:50 AM EST | Severe Thunderstorm Warning | ILM | Bladen, Brunswick, Columbus, New Hanover, Pender | 55 min |
| Jan 31, 1:39 AM EST | Severe Thunderstorm Warning | ILM | Brunswick, New Hanover, Pender | 21 min |
| Jan 31, 1:47 AM EST | Severe Thunderstorm Warning | AKQ | Charles City, Gloucester, Isle of Wight, James City, Mathews, Southampton and 8 more | 43 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 00:00Z, 1.4 hours before the alert went out and 76 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
- -75 J/kg
- Mixed-layer LCL
- 1052 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 457 m²/s²
- 0-3 km storm-relative helicity
- 630 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
878
WWUS20 KWNS 310126
SEL5
SPC WW 310126
NCZ000-SCZ000-VAZ000-310700-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 25
NWS STORM PREDICTION CENTER NORMAN OK
820 PM EST WED JAN 30 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL AND EASTERN NORTH CAROLINA
EASTERN SOUTH CAROLINA
SOUTH CENTRAL AND SOUTHEASTERN VIRGINIA
EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 820 PM
UNTIL 200 AM EST.
TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH OF SOUTH HILL
VIRGINIA TO 50 MILES SOUTH SOUTHWEST OF FLORENCE SOUTH CAROLINA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU5).
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 SEVERE
THUNDERSTORM WATCH NUMBER 22. WATCH NUMBER 22 WILL NOT BE IN
EFFECT AFTER 820 PM EST. CONTINUE...WW 23...WW 24...
DISCUSSION...NNE/SSW PRE-FRONTAL SQLN THROUGH CNTRL NC EXPECTED TO
ACCELERATE ENE THROUGH EARLY THU AS TN VLY SHORTWAVE TROUGH EJECTS
NE TOWARD REGION. STRENGTHENING FRONTAL CIRCULATION DOWNSTREAM FROM
TROUGH MAY COMPENSATE FOR WEAK BUOYANCY TO MAINTAIN FORCED
CONVECTIVE BAND ACROSS THE NC/VA PIEDMONT AND INTO WRN PORTIONS OF
THE ADJACENT CSTL PLN. AREA VWP DATA SHOW VERY STRONG WIND PROFILES
ACROSS REGION...AND FURTHER STRENGTHENING MAY OCCUR /WITH 850 MB
FLOW UP TO 80 KTS/. THUS...POTENTIAL WILL EXIST FOR EMBEDDED LEWPS
POSING A RISK FOR SPORADIC DMGG WINDS AND ISOLD
TORNADOES...ESPECIALLY NEAR LEWP CRESTS AND/OR LINE BREAKS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
350. MEAN STORM MOTION VECTOR 22060.
...CORFIDISPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 30, 7:09 PM EST | Mesoscale Discussion | SPC | Alleghany, Caswell, Forsyth, Guilford, Rockingham, Stokes and 3 more | 66 min |
| Jan 30, 7:56 PM EST | Mesoscale Discussion | SPC | Alamance, Anson, Cabarrus, Chatham, Cumberland, Davidson and 28 more | 94 min |
| Jan 30, 10:42 PM EST | Mesoscale Discussion | SPC | Bertie, Bladen, Chatham, Chowan, Columbus, Cumberland and 29 more | 93 min |
| Jan 30, 11:59 PM EST | Tornado Watch | SPC | Beaufort, Bertie, Camden, Carteret, Chowan, Craven and 17 more | 5 hr |
| Jan 31, 12:52 AM EST | Mesoscale Discussion | SPC | Beaufort, Bertie, Bladen, Brunswick, Camden, Chowan and 29 more | 83 min |
| Jan 31, 3:40 AM EST | Mesoscale Discussion | SPC | Dare, Hyde | 65 min |
| Jan 30, 8:44 PM EST | Mesoscale Discussion | SPC | Beaufort, Berkeley, Charleston, Colleton, Dorchester, Jasper | 61 min |
| Jan 30, 8:56 PM EST | Tornado Watch | SPC | Beaufort, Berkeley, Charleston, Colleton, Dorchester, Hampton and 1 more | 3 hr |
| Jan 30, 9:38 PM EST | Mesoscale Discussion | SPC | Albemarle, Arlington, Buckingham, Caroline, Clarke, Culpeper and 27 more | 67 min |
Nearby
Tornado Watches in North Carolina, 2013Tornado Watches in Virginia, 2013Tornado Watches in South Carolina, 2013Every tornado watch in 2013
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.