Alert archive / North Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Raleigh, NC

March 23, 20117 counties in North Carolina

NWS Raleigh, NC issued this special weather statement at Mar 23, 2011, 5:59 PM EDT for 7 counties in North Carolina. It was in force for 61 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: Mar 23, 2011, 5:59 PM EDT (21:59 UTC)
Expired: Mar 23, 2011, 7:00 PM EDT
In force: 61 min
Issued by: NWS Raleigh, NC

Counties Alamance County, NC, Davidson County, NC, Forsyth County, NC, Guilford County, NC, Orange County, NC, Person County, NC, Randolph County, NC

The radar

The Roanoke radar (KFCX), 119 km from the middle of the area, began a volume at 21:59 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, 10.0 hours before the alert went out and 13 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1642 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 119 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.

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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 Mar 23, 3:19 PM EDT, 2 hours 40 minutes earlier.

Area forecast discussion, Mar 23, 3:19 PM EDT, 2 hours 40 minutes before

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Hazardous weather outlook, Mar 23, 4:33 AM EDT, 13 hours 26 minutes before

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In the hours before

Special weather statement, Mar 23, 2:36 PM EDT, 3 hours 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
236 PM EDT WED MAR 23 2011

NCZ007>011-021>028-038>043-073>078-083>086-088-089-240000-
PERSON-GRANVILLE-VANCE-WARREN-HALIFAX-FORSYTH-GUILFORD-ALAMANCE-
ORANGE-DURHAM-FRANKLIN-NASH-EDGECOMBE-DAVIDSON-RANDOLPH-CHATHAM-
WAKE-JOHNSTON-WILSON-STANLY-MONTGOMERY-MOORE-LEE-HARNETT-WAYNE-
ANSON-RICHMOND-SCOTLAND-HOKE-CUMBERLAND-SAMPSON-
INCLUDING THE CITIES OF...ROXBORO...OXFORD...HENDERSON...
WARRENTON...ROANOKE RAPIDS...WINSTON-SALEM...GREENSBORO...
HIGH POINT...BURLINGTON...CHAPEL HILL...DURHAM...LOUISBURG...
NASHVILLE...ROCKY MOUNT...LEXINGTON...ASHEBORO...PITTSBORO...
RALEIGH...SMITHFIELD...WILSON...ALBEMARLE...TROY...
SOUTHERN PINES...SANFORD...LILLINGTON...GOLDSBORO...WADESBORO...
ROCKINGHAM...LAURINBURG...RAEFORD...FAYETTEVILLE...CLINTON
236 PM EDT WED MAR 23 2011

...INCREASED FIRE DANGER FOR THURSDAY...

A COLD FRONT WILL MOVE SOUTHEAST THROUGH THE AREA EARLY
THURSDAY. BEHIND THIS FRONT... SUSTAINED WINDS FROM THE NORTHWEST
AT 15 TO 20 MPH WILL GUST UP TO 25 TO 30 MPH. AS DRY AIR MOVES
IN... RELATIVE HUMIDITY VALUES WILL DROP TO 24 TO 30 PERCENT
ACROSS THE AREA IN THE AFTERNOON. THESE BLUSTERY WINDS AND DRY
AIR COMBINED WITH DRY FUELS AND TREE LITTER WILL RESULT IN AN
INCREASED FIRE DANGER ON THURSDAY.

RESIDENTS ARE ENCOURAGED TO POSTPONE ANY BURNING THROUGH
THURSDAY... AND TO PROPERLY EXTINGUISH ALL SMOKING MATERIALS.
MANY DESTRUCTIVE WILDFIRES ARE STARTED EACH YEAR DUE TO
IMPROPERLY DISCARDED SMOKING MATERIALS.

A RED FLAG WARNING FOR THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH
REMAINS IN EFFECT TODAY UNTIL 8 PM THIS EVENING.

GIH

Special weather statement, Mar 23, 5:59 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
559 PM EDT WED MAR 23 2011

NCZ007-021>024-038-039-232300-
ALAMANCE-DAVIDSON-FORSYTH-GUILFORD-ORANGE-PERSON-RANDOLPH-
559 PM EDT WED MAR 23 2011

...STRONG THUNDERSTORMS WILL MOVE ACROSS PERSON...FORSYTH...
GUILFORD...ALAMANCE...ORANGE...DAVIDSON AND RANDOLPH COUNTIES THROUGH
700 PM EDT...

AT 552 PM EDT...DOPPLER RADAR INDICATED A LINE OF STRONG
THUNDERSTORMS MOVING SOUTHEAST AT 55 MPH. THESE STORMS WILL BE
MOVING INTO THE TRIAD AND NORTHERN PIEDMONT OF NORTH CAROLINA WITHIN
THE NEXT 30 MINUTES. THESE STORMS HAVE A HISTORY OF PRODUCING HAIL
AND STRONG WINDS.

LOCATIONS IN THE PATH OF THESE STORMS INCLUDE...RURAL
HALL...WINSTON-SALEM...ASHEBORO...GREENSBORO...BURLINGTON...AND
ROXBORO.

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 3655 7880 3623 7881 3623 7895 3605 7898
      3584 7945 3584 7954 3579 7955 3551 8013
      3571 8033 3574 8046 3583 8049 3584 8040
      3590 8037 3596 8038 3607 8052 3612 8045
      3626 8045 3624 7916 3655 7914
TIME...MOT...LOC 2152Z 293DEG 50KT 3668 7925 3615 8118

KMC

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 23, 4:04 AM EDT	Red Flag Warning	RAH	Alamance, Anson, Chatham, Cumberland, Davidson, Durham and 25 more	16 hr
Mar 23, 6:51 PM EDT	Severe Thunderstorm Warning	RAH	Alamance, Durham, Guilford, Orange, Person	39 min
Mar 23, 7:08 PM EDT	Special Weather Statement	RAH	Forsyth, Guilford	52 min
Mar 23, 7:19 PM EDT	Special Weather Statement	RAH	Franklin, Granville, Vance, Warren	56 min
Mar 23, 7:31 PM EDT	Severe Thunderstorm Warning	RAH	Durham, Franklin, Granville, Orange, Vance, Wake	59 min
Mar 23, 7:54 PM EDT	Special Weather Statement	RAH	Davidson, Forsyth, Guilford	51 min

Nearby

Special Weather Statements in North Carolina, 2011 Every special weather statement in 2011

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.