Alert archive / North Carolina / Tornado Warnings in 2014

Tornado Warning 27, NWS Raleigh, NC

April 30, 2014Durham County, Granville County, Wake County, North Carolina

NWS Raleigh, NC issued this tornado warning at Apr 30, 2014, 5:24 AM EDT for Durham County, Granville County, Wake County, North Carolina. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 30, 2014, 5:24 AM EDT (09:24 UTC)
Expired
Apr 30, 2014, 6:15 AM EDT
In force
51 min
Issued by
NWS Raleigh, NC
Area
Storm-based polygon

Counties Durham County, NC, Granville County, NC, Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 59 km from the middle of the area, began a volume at 09:25 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.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 9.4 hours before the alert went out and 112 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 2014-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 2014-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 369 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
452 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
369 m²/s²
0-3 km storm-relative helicity
416 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.

173 
WFUS52 KRAH 300924
TORRAH
NCC063-077-183-301015-
/O.NEW.KRAH.TO.W.0027.140430T0924Z-140430T1015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
524 AM EDT WED APR 30 2014

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN GRANVILLE COUNTY IN CENTRAL NORTH CAROLINA...
  NORTH CENTRAL WAKE COUNTY IN CENTRAL NORTH CAROLINA...
  CENTRAL DURHAM COUNTY IN CENTRAL NORTH CAROLINA...

* UNTIL 615 AM EDT
    
* AT 524 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  NEAR DURHAM...AND MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DURHAM...CREEDMOOR...BUTNER...STEM...BEREA...LAKE BUTNER...
  GORMAN...FALLS LAKE STATE REC AREA...LAKE MICHIE...ROLLINGVIEW
  MARINA AND FALLS LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3627 7851 3618 7851 3617 7850 3615 7851
      3592 7876 3598 7893 3622 7882 3624 7880
      3636 7879
TIME...MOT...LOC 0924Z 208DEG 32KT 3601 7884 
$$

77
2 follow-up statements
980 
WWUS52 KRAH 300944
SVSRAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
544 AM EDT WED APR 30 2014

NCC063-183-300951-
/O.CAN.KRAH.TO.W.0027.000000T0000Z-140430T1015Z/
WAKE NC-DURHAM NC-
544 AM EDT WED APR 30 2014

...THE TORNADO WARNING FOR NORTH CENTRAL WAKE AND CENTRAL DURHAM
COUNTIES IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING MOVED OUT OF 
DURHAM AND WAKE COUNTIES. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3627 7851 3618 7851 3617 7850 3614 7852
      3611 7855 3608 7869 3607 7879 3609 7881
      3635 7876
TIME...MOT...LOC 0941Z 214DEG 24KT 3610 7875 

$$

NCC077-301015-
/O.CON.KRAH.TO.W.0027.000000T0000Z-140430T1015Z/
GRANVILLE NC-
544 AM EDT WED APR 30 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 AM EDT FOR SOUTHERN
GRANVILLE COUNTY...
     
AT 541 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED OVER
BUTNER...OR NEAR CREEDMOOR...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE... 
CREEDMOOR...BUTNER...STEM...BEREA...LAKE BUTNER... FALLS LAKE AND 
LOCATIONS ALONG I-85 BETWEEN MILE MARKERS 184 AND 202. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3627 7851 3618 7851 3617 7850 3614 7852
      3611 7855 3608 7869 3607 7879 3609 7881
      3635 7876
TIME...MOT...LOC 0941Z 214DEG 24KT 3610 7875 

$$

77
169 
WWUS52 KRAH 300953
SVSRAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
553 AM EDT WED APR 30 2014

NCC077-301015-
/O.CON.KRAH.TO.W.0027.000000T0000Z-140430T1015Z/
GRANVILLE NC-
553 AM EDT WED APR 30 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 AM EDT FOR CENTRAL
GRANVILLE COUNTY...
     
AT 551 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
CREEDMOOR...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE... CREEDMOOR...BUTNER...STEM... LAKE 
BUTNER... AND LOCATIONS ALONG I-85 BETWEEN MILE MARKERS 191 AND 202. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3627 7851 3612 7868 3613 7878 3633 7872
TIME...MOT...LOC 0951Z 207DEG 28KT 3617 7870 

$$

77

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 8:16 PM EDTSevere Thunderstorm WarningRAHWayne44 min
Apr 29, 8:39 PM EDTSpecial Weather StatementRAHCumberland36 min
Apr 29, 8:51 PM EDTSpecial Weather StatementRAHWayne39 min
Apr 29, 10:07 PM EDTAreal Flood AdvisoryRAHWilson3 hr
Apr 29, 10:38 PM EDTSpecial Weather StatementRAHFranklin67 min
Apr 29, 11:29 PM EDTSpecial Weather StatementRAHHalifax61 min
Apr 30, 12:12 AM EDTSpecial Weather StatementRAHWarren33 min
Apr 30, 12:22 AM EDTSevere Thunderstorm WarningRAHHalifax38 min
Apr 30, 4:12 AM EDTSpecial Weather StatementRAHDavidson, Forsyth48 min
Apr 30, 4:49 AM EDTSpecial Weather StatementRAHDurham41 min
Apr 30, 4:51 AM EDTTornado WarningRAHChatham, Durham, Orange39 min
Apr 30, 6:08 AM EDTTornado WarningRAHGranville, Vance52 min
Apr 30, 6:40 AM EDTSpecial Weather StatementRAHPerson20 min
Apr 30, 11:59 AM EDTSpecial Weather StatementRAHWake31 min
Apr 30, 12:12 PM EDTSpecial Weather StatementRAHCumberland, Harnett, Hoke, Lee, Wake63 min
Apr 30, 1:18 PM EDTSpecial Weather StatementRAHEdgecombe, Franklin, Granville, Halifax, Nash, Vance and 3 more87 min
Apr 30, 1:21 PM EDTSpecial Weather StatementRAHCumberland, Harnett, Hoke54 min
Apr 30, 1:28 PM EDTAreal Flood AdvisoryRAHHarnett, Wake3 hr
Apr 30, 2:18 PM EDTSpecial Weather StatementRAHSampson, Wayne57 min
Apr 30, 2:43 PM EDTAreal Flood AdvisoryRAHFranklin, Halifax, Nash2 hr
Apr 30, 3:24 PM EDTFlash Flood WarningRAHHalifax2 hr

Nearby

Tornado Warnings in North Carolina, 2014Every tornado warning in 2014Tornadoes in 2014

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.