Alert archive / North Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 3, NWS Raleigh, NC

February 23, 2012Johnston County, Nash County, Wake County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Feb 23, 2012, 1:22 AM EST for Johnston County, Nash County, Wake County, North Carolina. It was in force for 38 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
Feb 23, 2012, 1:22 AM EST (06:22 UTC)
Expired
Feb 23, 2012, 2:00 AM EST
In force
38 min
Issued by
NWS Raleigh, NC
Area
Storm-based polygon

Counties Johnston County, NC, Nash County, NC, Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 28 km from the middle of the area, began a volume at 06:24 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
Feb 23, 1:35 AM ESTTSTM WND DMG3 Nnw Middlesex, NCONE TREE DOWN BLOCKING ONE LANE FO TRAFFIC ON DABNAM ROAD NEAR NC 97.

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, 6.4 hours before the alert went out and 157 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 2012-02-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 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 2012-02-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 240 square meters per square second.1939587897117136156175Sfc1 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
8 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
1522 m above ground
0-6 km bulk shear
72 kt
0-1 km storm-relative helicity
240 m²/s²
0-3 km storm-relative helicity
371 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

712 
WUUS52 KRAH 230622
SVRRAH
NCC101-127-183-230700-
/O.NEW.KRAH.SV.W.0003.120223T0622Z-120223T0700Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
122 AM EST THU FEB 23 2012

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN WAKE COUNTY IN CENTRAL NORTH CAROLINA
  SOUTHERN NASH COUNTY IN CENTRAL NORTH CAROLINA
  NORTHERN JOHNSTON COUNTY IN CENTRAL NORTH CAROLINA

* UNTIL 200 AM EST

* AT 119 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS OVER WENDELL...OR 7 MILES NORTHWEST OF
  LINWOOD...MOVING EAST AT 55 MPH. WINDS IN EXCESS OF 58 MPH ARE
  LIKELY WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  MIDDLESEX...
  BAILEY...
  SHARPSBURG...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STRAIGHT LINE WINDS CAN BLOW DOWN TREES...POWER LINES...AND DAMAGE
MOBILE HOMES AND OTHER BUILDINGS. SEEK SHELTER IN A STURDY STRUCTURE
UNTIL THE STORM HAS PASSED. STAY AWAY FROM WINDOWS AS FLYING DEBRIS
GENERATED BY DAMAGING WINDS CAN BE DEADLY.

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 3584 7785 3584 7790 3573 7819 3561 7813
      3559 7807 3548 7812 3545 7819 3551 7869
      3554 7879 3590 7849 3593 7835 3591 7835
      3587 7828 3582 7826 3598 7815 3600 7778
TIME...MOT...LOC 0622Z 265DEG 46KT 3582 7835

$$

BADGETT
2 follow-up statements
574 
WWUS52 KRAH 230647
SVSRAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
147 AM EST THU FEB 23 2012

NCC183-230656-
/O.CAN.KRAH.SV.W.0003.000000T0000Z-120223T0700Z/
WAKE NC-
147 AM EST THU FEB 23 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WAKE 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 3584 7785 3584 7790 3573 7819 3561 7813
      3559 7807 3548 7812 3545 7819 3548 7848
      3551 7847 3557 7838 3566 7820 3577 7819
      3577 7823 3598 7795 3600 7778
TIME...MOT...LOC 0646Z 265DEG 46KT 3585 7797

$$

NCC101-127-230700-
/O.CON.KRAH.SV.W.0003.000000T0000Z-120223T0700Z/
NASH NC-JOHNSTON NC-
147 AM EST THU FEB 23 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM EST
FOR NORTHEASTERN JOHNSTON AND SOUTHERN NASH COUNTIES...

AT 145 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED 8 MILES
NORTHEAST OF BAILEY...OR 9 MILES SOUTH OF NASHVILLE...MOVING EAST AT
55 MPH.

SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED. STAY 
AWAY FROM WINDOWS AS FLYING DEBRIS GENERATED BY DAMAGING WINDS CAN 
BE DEADLY.

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 3584 7785 3584 7790 3573 7819 3561 7813
      3559 7807 3548 7812 3545 7819 3548 7848
      3551 7847 3557 7838 3566 7820 3577 7819
      3577 7823 3598 7795 3600 7778
TIME...MOT...LOC 0646Z 265DEG 46KT 3585 7797

$$

BADGETT
752 
WWUS52 KRAH 230656
SVSRAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
156 AM EST THU FEB 23 2012

NCC101-127-230706-
/O.EXP.KRAH.SV.W.0003.000000T0000Z-120223T0700Z/
NASH NC-JOHNSTON NC-
156 AM EST THU FEB 23 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JOHNSTON AND
SOUTHERN NASH COUNTIES EXPIRES AT 200 AM EST...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA AND 
THE WARNING WILL BE ALLOWED TO EXPIRE. 

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.

THIS INCLUDES INTERSTATE 95 BETWEEN EXITS 93 AND 138.

LAT...LON 3584 7785 3584 7790 3573 7819 3561 7813
      3559 7807 3548 7812 3545 7819 3548 7848
      3551 7847 3557 7838 3566 7820 3577 7819
      3577 7823 3598 7795 3600 7778
TIME...MOT...LOC 0656Z 265DEG 46KT 3585 7781

$$

BADGETT

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 22, 11:13 PM ESTSpecial Weather StatementRAHForsyth, Guilford47 min
Feb 22, 11:42 PM ESTSevere Thunderstorm WarningRAHAlamance, Davidson, Guilford, Randolph48 min
Feb 23, 12:09 AM ESTSevere Thunderstorm WarningRAHChatham, Durham, Granville, Orange, Person, Vance36 min
Feb 23, 12:14 AM ESTSpecial Weather StatementRAHAnson, Montgomery, Moore, Richmond, Stanly61 min
Feb 23, 12:52 AM ESTSpecial Weather StatementRAHChatham, Franklin, Lee, Wake53 min
Feb 23, 1:42 AM ESTSevere Thunderstorm WarningRAHEdgecombe, Wilson48 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2012Every severe thunderstorm warning 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.