Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Raleigh, NC

August 1, 2012Granville County, North Carolina

NWS Raleigh, NC issued this special weather statement at Aug 1, 2012, 9:40 PM EDT for Granville County, North Carolina. It was in force for 65 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 1, 2012, 9:40 PM EDT (01:40 UTC)
Expired: Aug 1, 2012, 10:45 PM EDT
In force: 65 min
Issued by: NWS Raleigh, NC

County Granville County, NC

The radar

The Raleigh/Durham radar (KRAX), 91 km from the middle of the area, began a volume at 01:41 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

Roanoke, VA (KRNK), launched 00:00Z, 1.7 hours before the alert went out and 119 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1079 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 1361 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

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

446 
WWUS82 KRAH 020140
SPSRAH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
940 PM EDT WED AUG 1 2012

NCZ007>009-020245-
GRANVILLE-PERSON-VANCE-
940 PM EDT WED AUG 1 2012

...STRONG THUNDERSTORMS WILL MOVE ACROSS NORTHERN VANCE...NORTHEAST 
PERSON AND NORTHERN GRANVILLE COUNTIES THROUGH 1045 PM EDT...

AT 939 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS 15 MILES
NORTHWEST OF KERR LAKE...OR ABOUT 11 MILES NORTH OF VIRGILINA...
MOVING SOUTHEAST AT 20 MPH.

LOCATIONS IN THE PATH OF THESE STORMS INCLUDE KERR LAKE...STOVALL... 
OAK HILL AND BETHEL HILL.

HAZARDS INCLUDE...
HALF INCH DIAMETER SIZE HAIL.
GUSTY WINDS OF 40 TO 50 MPH.
DEADLY CLOUD TO GROUND LIGHTNING.
HEAVY RAINFALL AND MINOR FLOODING.

SEEK SHELTER IN A NEARBY BUILDING OR VEHICLE. STRONG WINDS ARE
CAPABLE OF KNOCKING DOWN SMALL TREES AND BLOWING AROUND TRASH CANS...
POTTED PLANTS...LAWN FURNITURE AND OTHER LIGHT OUTDOOR OBJECTS.

&&

LAT...LON 3652 7831 3647 7831 3630 7884 3655 7891
      3655 7835
TIME...MOT...LOC 0139Z 325DEG 18KT 3670 7877

$$

77

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 10:44 PM EDT	Special Weather Statement	RAH	Granville, Person	61 min
Aug 2, 2:46 AM EDT	Special Weather Statement	RAH	Forsyth	59 min
Aug 2, 3:36 AM EDT	Special Weather Statement	RAH	Randolph	54 min
Aug 2, 4:32 AM EDT	Special Weather Statement	RAH	Randolph	58 min
Aug 2, 4:51 AM EDT	Special Weather Statement	RAH	Wake	54 min
Aug 2, 8:59 AM EDT	Special Weather Statement	RAH	Cumberland, Harnett, Hoke, Lee, Moore	61 min
Aug 2, 12:17 PM EDT	Special Weather Statement	RAH	Sampson, Wayne	58 min
Aug 2, 12:33 PM EDT	Special Weather Statement	RAH	Hoke	57 min
Aug 2, 12:36 PM EDT	Severe Thunderstorm Warning	RAH	Hoke, Moore, Richmond, Scotland	28 min
Aug 2, 1:34 PM EDT	Severe Thunderstorm Warning	RAH	Johnston, Wayne, Wilson	56 min
Aug 2, 2:08 PM EDT	Areal Flood Advisory	RAH	Johnston, Nash, Wayne, Wilson	112 min
Aug 2, 2:12 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland	48 min
Aug 2, 2:17 PM EDT	Severe Thunderstorm Warning	RAH	Nash	58 min
Aug 2, 2:19 PM EDT	Special Weather Statement	RAH	Halifax	56 min
Aug 2, 2:42 PM EDT	Areal Flood Advisory	RAH	Cumberland	108 min
Aug 2, 2:46 PM EDT	Special Weather Statement	RAH	Johnston	44 min
Aug 2, 3:12 PM EDT	Flash Flood Warning	RAH	Cumberland	2 hr
Aug 2, 3:19 PM EDT	Special Weather Statement	RAH	Cumberland	56 min
Aug 2, 3:21 PM EDT	Severe Thunderstorm Warning	RAH	Franklin	22 min
Aug 2, 3:30 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland	45 min
Aug 2, 3:32 PM EDT	Special Weather Statement	RAH	Halifax	43 min
Aug 2, 4:01 PM EDT	Special Weather Statement	RAH	Moore	59 min
Aug 2, 4:20 PM EDT	Severe Thunderstorm Warning	RAH	Moore	40 min
Aug 2, 4:24 PM EDT	Severe Thunderstorm Warning	RAH	Hoke, Moore, Richmond, Scotland	51 min
Aug 2, 4:26 PM EDT	Special Weather Statement	RAH	Chatham	64 min
Aug 2, 4:50 PM EDT	Areal Flood Advisory	RAH	Moore	68 min
Aug 2, 5:01 PM EDT	Areal Flood Advisory	RAH	Richmond, Scotland	88 min
Aug 2, 5:17 PM EDT	Special Weather Statement	RAH	Lee	58 min
Aug 2, 5:21 PM EDT	Flash Flood Warning	RAH	Richmond	67 min
Aug 2, 5:33 PM EDT	Severe Thunderstorm Warning	RAH	Sampson	40 min
Aug 2, 5:49 PM EDT	Special Weather Statement	RAH	Scotland	56 min
Aug 2, 5:59 PM EDT	Severe Thunderstorm Warning	RAH	Richmond, Scotland	46 min
Aug 2, 6:56 PM EDT	Special Weather Statement	RAH	Anson	64 min
Aug 2, 7:15 PM EDT	Areal Flood Advisory	RAH	Anson	3 hr
Aug 2, 7:59 PM EDT	Special Weather Statement	RAH	Anson	61 min

Nearby

Special Weather Statements in North Carolina, 2012 Every 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.