Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Raleigh, NC

August 6, 2012Montgomery County, North Carolina

NWS Raleigh, NC issued this special weather statement at Aug 6, 2012, 6:39 PM EDT for Montgomery County, North Carolina. It was in force for 36 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
Aug 6, 2012, 6:39 PM EDT (22:39 UTC)
Expired
Aug 6, 2012, 7:15 PM EDT
In force
36 min
Issued by
NWS Raleigh, NC

County Montgomery County, NC

The radar

The Raleigh/Durham radar (KRAX), 141 km from the middle of the area, began a volume at 22:41 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.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.7 hours before the alert went out and 65 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 12:00Z on 2012-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 854 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 12:00Z on 2012-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
854 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
718 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
3 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.

846 
WWUS82 KRAH 062239
SPSRAH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
639 PM EDT MON AUG 6 2012

NCZ038-039-073-074-062315-
DAVIDSON-MONTGOMERY-RANDOLPH-STANLY-
639 PM EDT MON AUG 6 2012

...STRONG THUNDERSTORMS WILL MOVE ACROSS STANLY...RANDOLPH...
MONTGOMERY AND DAVIDSON COUNTIES THROUGH 715 PM EDT...

AT 637 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS OVER
ELDORADO...OR ABOUT 11 MILES NORTHEAST OF ALBEMARLE...MOVING
NORTHEAST AT 10 MPH.

LOCATIONS IN THE PATH OF THESE STORMS INCLUDE NEW HOPE AND BADIN 
LAKE.

HAZARDS INCLUDE...
GUSTY WINDS UP TO 40 MPH.
DEADLY CLOUD TO GROUND LIGHTNING.
HEAVY RAINFALL AND MINOR FLOODING.

WIND GUSTS UP TO 40 MPH ARE CAPABLE OF KNOCKING DOWN SMALL TREE 
LIMBS AND BLOWING AROUND TRASH CANS...POTTED PLANTS...LAWN FURNITURE 
AND OTHER LIGHT OUTDOOR OBJECTS. LOCALLY HEAVY RAINFALL WILL RESULT 
IN MINOR FLOODING AND PONDING OF WATER ON AREA ROADWAYS. MOTORISTS 
ARE URGED TO SLOW DOWN AND USE EXTRA CAUTION TO AVOID HYDROPLANING.

&&

LAT...LON 3551 8029 3551 8020 3555 8020 3570 7986
      3552 7975 3551 7975 3551 7977 3546 7976
      3531 8022 3549 8031
TIME...MOT...LOC 2237Z 243DEG 9KT 3548 8005

$$

VINCENT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 4:21 PM EDTSevere Thunderstorm WarningRAHHalifax, Warren39 min
Aug 6, 5:22 PM EDTSpecial Weather StatementRAHChatham38 min
Aug 6, 5:41 PM EDTSpecial Weather StatementRAHRichmond34 min
Aug 6, 5:54 PM EDTSpecial Weather StatementRAHFranklin66 min
Aug 6, 5:55 PM EDTSevere Thunderstorm WarningRAHMontgomery, Moore, Richmond, Scotland29 min
Aug 6, 6:24 PM EDTSpecial Weather StatementRAHRandolph51 min
Aug 6, 6:26 PM EDTAreal Flood AdvisoryRAHDavidson, Montgomery, Randolph, Stanly3 hr
Aug 6, 6:29 PM EDTSpecial Weather StatementRAHWayne61 min
Aug 6, 7:11 PM EDTFlash Flood WarningRAHMontgomery, Randolph, Stanly3 hr
Aug 6, 7:32 PM EDTSpecial Weather StatementRAHChatham58 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.