Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Raleigh, NC

July 27, 2012Wayne County, North Carolina

NWS Raleigh, NC issued this special weather statement at Jul 27, 2012, 7:21 PM EDT for Wayne County, North Carolina. It was in force for 54 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
Jul 27, 2012, 7:21 PM EDT (23:21 UTC)
Expired
Jul 27, 2012, 8:15 PM EDT
In force
54 min
Issued by
NWS Raleigh, NC

County Wayne County, NC

The radar

The Raleigh/Durham radar (KRAX), 60 km from the middle of the area, began a volume at 23:23 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

Newport, NC (KMHX), launched 12:00Z, 11.4 hours before the alert went out and 117 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, Newport, NC at 12:00Z on 2012-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2927 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, Newport, NC at 12:00Z on 2012-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.193958Sfc1 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
2927 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
1165 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

551 
WWUS82 KRAH 272321
SPSRAH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
721 PM EDT FRI JUL 27 2012

NCZ042-078-089-280015-
JOHNSTON-SAMPSON-WAYNE-
721 PM EDT FRI JUL 27 2012

...STRONG THUNDERSTORMS WILL MOVE ACROSS SAMPSON...WAYNE AND JOHNSTON
COUNTIES THROUGH 815 PM EDT...

AT 721 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS OVER
GRANTHAM...OR ABOUT 9 MILES NORTHWEST OF MOUNT OLIVE...MOVING EAST AT
30 MPH.

LOCATIONS IN THE PATH OF THESE STORMS INCLUDE BROGDEN...AND...
MAR-MAC...ELROY...AND...GOLDSBORO...WALNUT CREEK.

HAZARDS INCLUDE...
PEA SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.

DEADLY CLOUD TO GROUND LIGHTNING.

HEAVY RAINFALL AND MINOR FLOODING.

DON'T WAIT UNTIL YOU SEE THE FIRST LIGHTNING FLASH BEFORE HEADING TO
SAFETY. MOVE INDOORS AT THE FIRST SIGN OF THREATENING SKIES OR THE
FIRST SOUND OF THUNDER. MAKE SURE THAT LIGHTNING IS WELL AWAY FROM
YOUR LOCATION BEFORE RESUMING OUTDOOR ACTIVITY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
FRIDAY EVENING FOR CENTRAL NORTH CAROLINA.

&&

LAT...LON 3531 7782 3516 7825 3533 7834 3553 7783
      3542 7782 3541 7781
TIME...MOT...LOC 2321Z 257DEG 27KT 3526 7819

$$

SEC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 1:43 PM EDTSpecial Weather StatementRAHRandolph62 min
Jul 27, 2:27 PM EDTSevere Thunderstorm WarningRAHAlamance, Chatham, Orange, Randolph29 min
Jul 27, 2:35 PM EDTSpecial Weather StatementRAHHalifax25 min
Jul 27, 2:44 PM EDTSevere Thunderstorm WarningRAHHalifax46 min
Jul 27, 3:31 PM EDTSpecial Weather StatementRAHHalifax29 min
Jul 27, 3:54 PM EDTSpecial Weather StatementRAHForsyth51 min
Jul 27, 4:13 PM EDTSevere Thunderstorm WarningRAHForsyth47 min
Jul 27, 4:30 PM EDTSevere Thunderstorm WarningRAHGuilford60 min
Jul 27, 5:05 PM EDTSevere Thunderstorm WarningRAHPerson55 min
Jul 27, 5:32 PM EDTSevere Thunderstorm WarningRAHAlamance58 min
Jul 27, 6:19 PM EDTSevere Thunderstorm WarningRAHAlamance, Durham, Granville, Orange, Person56 min
Jul 27, 6:24 PM EDTSevere Thunderstorm WarningRAHAlamance, Chatham, Orange, Randolph66 min
Jul 27, 6:36 PM EDTSevere Thunderstorm WarningRAHFranklin, Nash, Vance, Warren54 min
Jul 27, 7:04 PM EDTSevere Thunderstorm WarningRAHMontgomery, Randolph, Stanly56 min
Jul 27, 7:05 PM EDTSevere Thunderstorm WarningRAHChatham, Durham, Franklin, Granville, Wake55 min
Jul 27, 7:35 PM EDTSevere Thunderstorm WarningRAHAlamance, Chatham, Lee, Moore, Orange, Randolph40 min
Jul 27, 7:43 PM EDTSpecial Weather StatementRAHEdgecombe, Franklin, Halifax, Nash, Wilson62 min

Nearby

Special Weather Statements in North Carolina, 2012Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.