Alert archive / North Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Raleigh, NC

August 21, 2011Sampson County, North Carolina

NWS Raleigh, NC issued this special weather statement at Aug 21, 2011, 11:40 PM EDT for Sampson County, North Carolina. It was in force for 50 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 21, 2011, 11:40 PM EDT (03:40 UTC)
Expired: Aug 22, 2011, 12:30 AM EDT
In force: 50 min
Issued by: NWS Raleigh, NC

County Sampson County, NC

The radar

The Wilmington radar (KLTX), 85 km from the middle of the area, began a volume at 03:40 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 00:00Z, 3.7 hours before the alert went out and 128 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: 2006 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 834 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.4

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 Aug 21, 10:49 PM EDT, 51 minutes earlier.

Area forecast discussion, Aug 21, 10:49 PM EDT, 51 minutes before

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Hazardous weather outlook, Aug 21, 9:41 PM EDT, 1 hour 59 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RALEIGH NC
941 PM EDT SUN AUG 21 2011

NCZ007>011-021>028-038>040-221100-
PERSON-GRANVILLE-VANCE-WARREN-HALIFAX-FORSYTH-GUILFORD-ALAMANCE-
ORANGE-DURHAM-FRANKLIN-NASH-EDGECOMBE-DAVIDSON-RANDOLPH-CHATHAM-
941 PM EDT SUN AUG 21 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...THROUGH TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

FOLLOW THE LATEST FORECASTS FROM THE NATIONAL HURRICANE CENTER
REGARDING TROPICAL STORM IRENE.

NCZ041>043-073>078-083>086-088-089-221100-
WAKE-JOHNSTON-WILSON-STANLY-MONTGOMERY-MOORE-LEE-HARNETT-WAYNE-ANSON-
RICHMOND-SCOTLAND-HOKE-CUMBERLAND-SAMPSON-
941 PM EDT SUN AUG 21 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...THROUGH TONIGHT.

NUMEROUS THUNDERSTORMS WILL MOVE EAST ACROSS THE AREA TONIGHT.
THE STRONGEST STORMS WILL PRODUCE GUSTY WINDS UP TO 45 MPH...
LOCALLY HEAVY RAIN AND RESULTANT FLOODING...AND FREQUENT
LIGHTNING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

FOLLOW THE LATEST FORECASTS FROM THE NATIONAL HURRICANE CENTER
REGARDING TROPICAL STORM IRENE.

In the hours before

Special weather statement, Aug 21, 9:30 PM EDT, 2 hours 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
930 PM EDT SUN AUG 21 2011

NCZ042-043-077-078-088-089-220230-
CUMBERLAND-HARNETT-JOHNSTON-SAMPSON-WAYNE-WILSON-
930 PM EDT SUN AUG 21 2011

...STRONG THUNDERSTORMS WILL MOVE ACROSS SAMPSON...HARNETT...WAYNE...
JOHNSTON...WILSON AND CUMBERLAND COUNTIES THROUGH 1030 PM EDT...

AT 928 PM EDT...DOPPLER RADAR INDICATED A LINE OF STRONG
THUNDERSTORMS OVER COATS CROSSROADS...OR ABOUT 9 MILES WEST OF
SMITHFIELD...MOVING SOUTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE LILLINGTON... CLAYTON... FOUR OAKS...
LUCAMA... FAYETTEVILLE... DUNN... BENSON... AND GOLDSBORO.

HAZARDS INCLUDE...
GUSTY WINDS OF 30 TO 40 MPH.

DEADLY CLOUD TO GROUND LIGHTNING.

HEAVY RAINFALL AND MINOR FLOODING.

THESE THUNDERSTORMS ARE PRODUCING AN EXCESSIVE AMOUNT OF LIGHTNING.
SEEK SHELTER INDOORS AND STAY AWAY FROM THE WINDOWS. MANY LIGHTNING
STRIKES WILL OCCUR WELL AHEAD OF THE HEAVY RAIN AND GUSTY WINDS. IF
YOU CANNOT SEEK SHELTER INDOORS TAKE COVER IN A VEHICLE.

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.

THIS STORM WILL PRODUCE HEAVY RAINFALL...WHICH WILL CAUSE MINOR
FLOODING OF LOW LYING AREAS INCLUDING DITCHES...CREEKS...ROADWAYS AND
AREAS OF POOR DRAINAGE. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS. MOTORISTS SHOULD ALSO REDUCE DRIVING SPEEDS TO AVOID
HYDROPLANING.

&&

LAT...LON 3489 7893 3496 7904 3504 7909 3520 7910
      3527 7922 3558 7890 3552 7871 3566 7853
      3581 7825 3573 7820 3575 7813 3558 7780
      3537 7780 3518 7783 3515 7790 3519 7801
      3518 7816 3497 7814 3485 7851 3483 7890
TIME...MOT...LOC 0128Z 299DEG 37KT 3546 7848

10

Local storm report, Aug 21, 9:48 PM EDT, 1 hour 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
948 PM EDT SUN AUG 21 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0821 PM     TSTM WND DMG     4 ESE ROLESVILLE        35.91N  78.40W
08/21/2011                   WAKE               NC   911 CALL CENTER

            ONE TREE BLOWN DOWN ON MITCHELL MILL ROAD

&&

EVENT NUMBER RAH1101250

DJF

Local storm report, Aug 21, 9:54 PM EDT, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
954 PM EDT SUN AUG 21 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0850 PM     FLASH FLOOD      4 SSW DORTCHES          35.96N  77.87W
08/21/2011                   NASH               NC   LAW ENFORCEMENT

            PARTS OF SOUTH HALIFAX ROAD BETWEEN KETCH POINT DRIVE
            AND MCINTYRE LANE CLOSED DUE TO HIGH WATER AND PREVIOUS
            HEAVY RAIN. DOT ENROUTE.

&&

EVENT NUMBER RAH1101251

DJF

Special weather statement, Aug 21, 10:28 PM EDT, 1 hour 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
1028 PM EDT SUN AUG 21 2011

NCZ083>085-220330-
ANSON-RICHMOND-SCOTLAND-
1028 PM EDT SUN AUG 21 2011

...A STRONG THUNDERSTORM WILL MOVE ACROSS SCOTLAND...RICHMOND AND
ANSON COUNTIES THROUGH 1130 PM EDT...

AT 1027 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
POLKTON...OR ABOUT 6 MILES WEST OF WADESBORO...MOVING EAST AT 30 MPH.

SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE... WADESBORO...
ROCKINGHAM... ELLERBE... LILESVILLE... AND MORVEN.

HAZARDS INCLUDE...
GUSTY WINDS TO 50 MPH.

DEADLY CLOUD TO GROUND LIGHTNING.

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.

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.

&&

LAT...LON 3480 7968 3482 8032 3516 8028 3515 8016
      3516 8017 3517 8009 3514 8007 3514 8002
      3516 7998 3516 7989 3518 7986 3516 7962
      3512 7957 3506 7957 3502 7943 3491 7935
      3482 7935 3477 7932 3463 7946
TIME...MOT...LOC 0227Z 290DEG 28KT 3497 8012

10

Local storm report, Aug 21, 10:46 PM EDT, 54 minutes before

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Special weather statement, Aug 21, 11:40 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 8:00 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Nash, Wilson	75 min
Aug 21, 8:04 PM EDT	Special Weather Statement	RAH	Anson	56 min
Aug 21, 8:08 PM EDT	Special Weather Statement	RAH	Durham	67 min
Aug 21, 8:12 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Nash, Wake	69 min
Aug 21, 8:13 PM EDT	Severe Thunderstorm Warning	RAH	Harnett, Lee	62 min
Aug 21, 8:17 PM EDT	Areal Flood Advisory	RAH	Durham, Franklin, Wake	110 min
Aug 21, 8:33 PM EDT	Severe Thunderstorm Warning	RAH	Anson, Montgomery, Richmond	42 min
Aug 21, 8:36 PM EDT	Flash Flood Warning	RAH	Durham, Edgecombe, Franklin, Johnston, Nash, Wake	4 hr
Aug 21, 8:43 PM EDT	Special Weather Statement	RAH	Wake	62 min
Aug 21, 9:13 PM EDT	Special Weather Statement	RAH	Anson, Hoke, Richmond, Scotland	62 min
Aug 21, 9:30 PM EDT	Special Weather Statement	RAH	Cumberland, Harnett, Johnston, Sampson, Wayne	60 min
Aug 21, 9:37 PM EDT	Areal Flood Advisory	RAH	Harnett	68 min
Aug 21, 9:39 PM EDT	Areal Flood Advisory	RAH	Scotland	3 hr
Aug 21, 10:04 PM EDT	Severe Thunderstorm Warning	RAH	Wayne	37 min
Aug 21, 10:28 PM EDT	Special Weather Statement	RAH	Anson, Richmond, Scotland	62 min
Aug 21, 10:28 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Sampson	62 min
Aug 22, 12:34 AM EDT	Areal Flood Advisory	RAH	Cumberland	3 hr

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.