Alert archive / North Carolina / Tornado Warnings in 2012

Tornado Warning 11, NWS Raleigh, NC

September 2, 2012Durham County, Orange County, Person County, North Carolina

NWS Raleigh, NC issued this tornado warning at Sep 2, 2012, 8:42 PM EDT for Durham County, Orange County, Person County, North Carolina. It was in force for 33 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Sep 2, 2012, 8:42 PM EDT (00:42 UTC)
Expired
Sep 2, 2012, 9:15 PM EDT
In force
33 min
Issued by
NWS Raleigh, NC
Area
Storm-based polygon

Counties Durham County, NC, Orange County, NC, Person County, NC

The radar

The Raleigh/Durham radar (KRAX), 82 km from the middle of the area, began a volume at 00:41 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 was reported inside it

TimeReportWhereRemark
Sep 2, 9:15 PM EDTTSTM WND DMG2 Se Rougemont, NCDOWNED TREE BLOCKING ONE LANE AT THE INTERSECTION OF QUAIL ROOST FARM ROAD AND N. ROXBORO ROAD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.7 hours before the alert went out and 80 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 00:00Z on 2012-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 408 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, Greensboro/Hi Pt, NC at 00:00Z on 2012-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.1939Sfc1 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
408 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
678 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

428 
WFUS52 KRAH 030042
TORRAH
NCC063-135-145-030115-
/O.NEW.KRAH.TO.W.0011.120903T0042Z-120903T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
842 PM EDT SUN SEP 2 2012

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL DURHAM COUNTY IN CENTRAL NORTH CAROLINA
  NORTHERN ORANGE COUNTY IN CENTRAL NORTH CAROLINA
  SOUTHERN PERSON COUNTY IN CENTRAL NORTH CAROLINA

* UNTIL 915 PM EDT

* AT 840 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO OVER CARR...OR 7 MILES SOUTH OF PROSPECT HILL...MOVING
  NORTHEAST AT 35 MPH. DAMAGING STRAIGHT LINE WINDS IN EXCESS OF 58
  MPH ARE ALSO LIKELY WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  SCHLEY...
  ROUGEMONT...
  SURL...
  MORIAH...

THIS INCLUDES INTERSTATE 40 BETWEEN EXITS 157 AND 160.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER. IF NO SHELTER IS
AVAILABLE LIE DOWN IN A LOW LYING AREA. PROTECT YOURSELF FROM FLYING
DEBRIS.

PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE BY
CALLING...1...8 7 7...6 3 3...6 7 7 2 OR NOTIFY YOUR LOCAL LAW
ENFORCEMENT AGENCY.

&&

LAT...LON 3636 7880 3619 7880 3604 7926 3621 7926
      3625 7919 3625 7916 3627 7916 3640 7891
TIME...MOT...LOC 0042Z 246DEG 30KT 3617 7917

$$

MWS
4 follow-up statements
932 
WWUS52 KRAH 030057 RRA
SVSRAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
857 PM EDT SUN SEP 2 2012

NCC063-135-145-030115-
/O.CON.KRAH.TO.W.0011.000000T0000Z-120903T0115Z/
DURHAM NC-ORANGE NC-PERSON NC-
857 PM EDT SUN SEP 2 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR SOUTHERN
PERSON...NORTHEASTERN ORANGE AND NORTH CENTRAL DURHAM COUNTIES...

AT 855 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR SCHLEY...OR 10
MILES EAST OF PROSPECT HILL...MOVING EAST AT 35 MPH.

HAZARDS IN THE WARNING INCLUDE...
A TORNADO.
OTHER DAMAGING WINDS IN EXCESS OF 58 MPH.

LOCATIONS IN THE PATH OF THE STORM INCLUDE... ROUGEMONT...BAHAMA...
SURL AND MORIAH.

NIGHTTIME TORNADOES ARE EXTREMELY DANGEROUS AS THEY ARE DIFFICULT TO
SEE. TAKE COVER NOW. DO NOT SEEK VISUAL CONFIRMATION.

WHEN IT IS SAFE TO DO SO...PLEASE CALL IN YOUR REPORTS OF PENNY OR
LARGER SIZED HAIL...AS WELL AS WIND DAMAGE...INCLUDING TREES OR LARGE
LIMBS DOWNED BY CALLING THE NATIONAL WEATHER SERVICE TOLL FREE AT...
1...8 7 7...6 3 3...6 7 7 2.

LAT...LON 3636 7880 3619 7880 3610 7906 3616 7912
      3625 7916 3627 7916 3640 7891
TIME...MOT...LOC 0057Z 249DEG 30KT 3621 7901

$$

MWS
310 
WWUS52 KRAH 030103
SVSRAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
903 PM EDT SUN SEP 2 2012

NCC063-135-145-030115-
/O.CON.KRAH.TO.W.0011.000000T0000Z-120903T0115Z/
DURHAM NC-ORANGE NC-PERSON NC-
903 PM EDT SUN SEP 2 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR SOUTHERN
PERSON...NORTHEASTERN ORANGE AND NORTH CENTRAL DURHAM COUNTIES...

AT 901 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 4 MILES WEST OF 
ROUGEMONT...OR 12 MILES NORTHEAST OF HILLSBOROUGH...MOVING EAST AT 
35 MPH.

HAZARDS IN THE WARNING INCLUDE...
A TORNADO.
OTHER DAMAGING WINDS IN EXCESS OF 58 MPH.

LOCATIONS IN THE PATH OF THE STORM INCLUDE... BAHAMA...SURL AND
MORIAH.

WHEN IT IS SAFE TO DO SO...PLEASE CALL IN YOUR REPORTS OF FUNNEL 
CLOUDS...TORNADOES.. OR WIND DAMAGE INCLUDING TREES OR LARGE LIMBS 
DOWNED...BY CALLING THE NATIONAL WEATHER SERVICE TOLL FREE 
AT...1...8 7 7...6 3 3...6 7 7 2.

LAT...LON 3613 7898 3617 7905 3625 7916 3627 7915
      3640 7891 3636 7880 3619 7880
TIME...MOT...LOC 0102Z 249DEG 30KT 3622 7896

$$

MWS
950 
WWUS52 KRAH 030109
SVSRAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
909 PM EDT SUN SEP 2 2012

NCC135-030118-
/O.CAN.KRAH.TO.W.0011.000000T0000Z-120903T0115Z/
ORANGE NC-
909 PM EDT SUN SEP 2 2012

...THE TORNADO WARNING FOR NORTHEASTERN ORANGE COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA AND 
THE WARNING IS NO LONGER IN EFFECT. 

IF YOU OBSERVED SEVERE WEATHER INCLUDING DAMAGING WINDS OR LARGE
HAIL...PLEASE CONTACT THE NATIONAL WEATHER SERVICE BY CALLING TOLL
FREE 1...8 7 7...6 3 3...6 7 7 2...OR NOTIFY YOUR NEAREST LAW
ENFORCEMENT AGENCY AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL
WEATHER SERVICE FORECAST OFFICE IN RALEIGH.

LAT...LON 3636 7880 3619 7880 3614 7896 3614 7897
      3624 7895 3624 7908 3640 7891
TIME...MOT...LOC 0108Z 249DEG 30KT 3624 7890

$$

NCC063-145-030115-
/O.CON.KRAH.TO.W.0011.000000T0000Z-120903T0115Z/
DURHAM NC-PERSON NC-
909 PM EDT SUN SEP 2 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR
SOUTHEASTERN PERSON AND NORTH CENTRAL DURHAM COUNTIES...

AT 906 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR ROUGEMONT...OR 12
MILES SOUTH OF ROXBORO...MOVING EAST AT 35 MPH.

HAZARDS IN THE WARNING INCLUDE...
A TORNADO.
OTHER DAMAGING WINDS IN EXCESS OF 58 MPH.

LOCATIONS IN THE PATH OF THE STORM INCLUDE... SURL AND MORIAH.

WHEN IT IS SAFE TO DO SO...PLEASE CALL IN YOUR REPORTS OF FUNNEL 
CLOUDS...TORNADOES...OR WIND DAMAGE INCLUDING TREES OR LARGE LIMBS 
DOWNED BY CALLING THE NATIONAL WEATHER SERVICE TOLL FREE AT...1...8 
7 7...6 3 3...6 7 7 2.

LAT...LON 3636 7880 3619 7880 3614 7896 3614 7897
      3624 7895 3624 7908 3640 7891
TIME...MOT...LOC 0108Z 249DEG 30KT 3624 7890

$$

MWS
142 
WWUS52 KRAH 030112
SVSRAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
912 PM EDT SUN SEP 2 2012

NCC063-145-030121-
/O.EXP.KRAH.TO.W.0011.000000T0000Z-120903T0115Z/
DURHAM NC-PERSON NC-
912 PM EDT SUN SEP 2 2012

...THE TORNADO WARNING FOR SOUTHEASTERN PERSON AND NORTH CENTRAL
DURHAM COUNTIES EXPIRES AT 915 PM EDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND THE WARNING 
WILL BE ALLOWED TO EXPIRE. 

IF YOU OBSERVED SEVERE WEATHER INCLUDING FUNNEL CLOUDS... 
TORNADOES...OR WIND DAMAGE SUCH AS TREES OR LARGE LIMBS DOWNED...BY 
CALLING THE NATIONAL WEATHER SERVICE TOLL FREE AT...1...8 7 7...6 3 
3...6 7 7 2...OR NOTIFY YOUR NEAREST LAW ENFORCEMENT AGENCY AND ASK 
THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST 
OFFICE IN RALEIGH.

LAT...LON 3636 7880 3619 7880 3614 7896 3614 7897
      3624 7895 3624 7908 3640 7891
TIME...MOT...LOC 0111Z 249DEG 30KT 3625 7887

$$

MWS

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 2, 8:20 PM EDTSpecial Weather StatementRAHAlamance, Orange85 min
Sep 2, 8:28 PM EDTSevere Thunderstorm WarningRAHAlamance, Durham, Orange, Person53 min
Sep 2, 9:20 PM EDTSpecial Weather StatementRAHGranville, Vance55 min
Sep 2, 9:43 PM EDTSpecial Weather StatementRAHChatham, Durham, Lee, Moore, Orange62 min
Sep 2, 10:26 PM EDTSpecial Weather StatementRAHLee, Wake94 min
Sep 2, 11:09 PM EDTSpecial Weather StatementRAHFranklin, Granville, Nash, Wake51 min
Sep 2, 11:42 PM EDTAreal Flood AdvisoryRAHWake108 min
Sep 3, 2:35 AM EDTAreal Flood AdvisoryRAHMontgomery, Richmond99 min
Sep 3, 1:00 PM EDTSpecial Weather StatementRAHDavidson, Forsyth, Guilford, Randolph90 min
Sep 3, 1:01 PM EDTFlash Flood WarningRAHForsyth3 hr
Sep 3, 1:06 PM EDTSpecial Weather StatementRAHAnson, Montgomery, Stanly84 min
Sep 3, 1:09 PM EDTAreal Flood AdvisoryRAHStanly3 hr
Sep 3, 1:18 PM EDTFlash Flood WarningRAHStanly3 hr
Sep 3, 1:21 PM EDTSevere Thunderstorm WarningRAHForsyth, Guilford39 min
Sep 3, 1:27 PM EDTSevere Thunderstorm WarningRAHMontgomery, Randolph, Stanly48 min
Sep 3, 2:23 PM EDTAreal Flood AdvisoryRAHGuilford3 hr
Sep 3, 2:35 PM EDTSpecial Weather StatementRAHAnson, Montgomery, Moore, Richmond, Stanly85 min
Sep 3, 2:38 PM EDTSpecial Weather StatementRAHDavidson, Forsyth, Guilford, Randolph97 min
Sep 3, 2:53 PM EDTFlash Flood WarningRAHGuilford3 hr
Sep 3, 3:34 PM EDTAreal Flood AdvisoryRAHRandolph2 hr
Sep 3, 3:59 PM EDTSpecial Weather StatementRAHHoke, Lee, Moore, Richmond, Scotland91 min
Sep 3, 4:03 PM EDTSpecial Weather StatementRAHAlamance, Chatham, Orange87 min
Sep 3, 4:14 PM EDTFlash Flood WarningRAHStanly2 hr
Sep 3, 4:17 PM EDTSevere Thunderstorm WarningRAHAlamance, Orange58 min
Sep 3, 4:52 PM EDTAreal Flood AdvisoryRAHAlamance, Orange2 hr
Sep 3, 4:57 PM EDTSevere Thunderstorm WarningRAHRichmond, Scotland48 min
Sep 3, 5:40 PM EDTAreal Flood AdvisoryRAHDurham, Orange3 hr
Sep 3, 5:41 PM EDTSpecial Weather StatementRAHWake64 min
Sep 3, 5:49 PM EDTSpecial Weather StatementRAHWilson56 min
Sep 3, 6:21 PM EDTSpecial Weather StatementRAHDurham54 min
Sep 3, 7:41 PM EDTSpecial Weather StatementRAHWake64 min

Nearby

Tornado Warnings in North Carolina, 2012Every tornado warning in 2012Tornadoes in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.