Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Raleigh, NC

October 7, 201214 counties in North Carolina

NWS Raleigh, NC issued this special weather statement at Oct 7, 2012, 7:34 AM EDT for 14 counties in North Carolina. It was in force for 56 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: Oct 7, 2012, 7:34 AM EDT (11:34 UTC)
Expired: Oct 7, 2012, 8:30 AM EDT
In force: 56 min
Issued by: NWS Raleigh, NC

Counties Alamance County, NC, Anson County, NC, Chatham County, NC, Davidson County, NC, Forsyth County, NC, Guilford County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Stanly County, NC

The radar

The Raleigh/Durham radar (KRAX), 107 km from the middle of the area, began a volume at 11:34 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, 11.6 hours before the alert went out and 55 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: 12 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 1092 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 217 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Raleigh, NC wrote its last area forecast discussion before this special weather statement went out at Oct 7, 3:00 AM EDT, 4 hours 34 minutes earlier.

Area forecast discussion, Oct 7, 3:00 AM EDT, 4 hours 34 minutes before

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Hazardous weather outlook, Oct 7, 3:44 AM EDT, 3 hours 50 minutes before

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In the hours before

Special weather statement, Oct 7, 7:34 AM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
734 AM EDT SUN OCT 7 2012

NCZ007-021>024-038>040-073>076-083-084-071230-
ALAMANCE-ANSON-CHATHAM-DAVIDSON-FORSYTH-GUILFORD-LEE-MONTGOMERY-
MOORE-ORANGE-PERSON-RANDOLPH-RICHMOND-STANLY-
734 AM EDT SUN OCT 7 2012

...SHOWERS AND STRONG THUNDERSTORMS WILL MOVE ACROSS THE WESTERN
PIEDMONT THROUGH 830 AM...

AT 728 AM EDT...DOPPLER RADAR INDICATED A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM SUMMERFIELD TO 39 MILES
WEST OF MONROE...MOVING EAST AT 40 MPH.

LOCATIONS IN THE PATH OF THESE STORMS INCLUDE... HIGH POINT...
GREENSBORO... BURLINGTON... UNION RIDGE... ASHEBORO... ALBEMARLE...
TROY... BADIN LAKE... ANSONVILLE... WADESBORO... SILER CITY.

HAZARDS INCLUDE...
GUSTY WINDS OF 30 TO 40 MPH.
HEAVY RAINFALL AND MINOR FLOODING.

WINDS GUSTS UP TO 25 TO 30 MPH HAVE BEEN REPORTED WITH THIS LINE OF
STORMS. PEOPLE IN THE PATH OF THESE SHOWERS AND STORMS CAN EXPECT
STRONG GUSTY NORTH WINDS... MODERATE TO HEAVY RAINFALL LASTING 45
MINUTES TO ONE HOUR AT ANY GIVEN LOCATION... AND OCCASIONAL
LIGHTNING. THESE STORMS WILL MOVE INTO THE TRIANGLE AREA AFTER 830
AM.

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.

&&

LAT...LON 3552 8019 3579 8048 3589 8037 3609 8052
      3626 8046 3625 7916 3654 7914 3655 7880
      3587 7902 3586 7891 3562 7899 3558 7892
      3527 7922 3518 7910 3521 7925 3506 7953
      3480 7969 3481 8032 3519 8029 3520 8051
TIME...MOT...LOC 1128Z 271DEG 34KT 3624 7984 3481 8114

HARTFIELD

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 7, 7:58 AM EDT	Special Weather Statement	RAH	Anson, Montgomery, Richmond, Stanly	47 min
Oct 7, 9:36 AM EDT	Special Weather Statement	RAH	Franklin, Nash, Vance, Wake, Warren, Wilson	54 min
Oct 7, 10:06 AM EDT	Special Weather Statement	RAH	Franklin, Nash, Vance, Wake, Warren, Wilson	44 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.