Alert archive / North Carolina / Flash Flood Warnings in 2011

Flash Flood Warning 45, NWS Raleigh, NC

August 29, 2011Edgecombe County, Nash County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Aug 29, 2011, 7:30 PM EDT for Edgecombe County, Nash County, North Carolina. It was in force for 3 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 29, 2011, 7:30 PM EDT (23:30 UTC)
Expired
Aug 29, 2011, 10:03 PM EDT
In force
3 hr
Issued by
NWS Raleigh, NC
Area
Storm-based polygon
Flood severity
None

Counties Edgecombe County, NC, Nash County, NC

The radar

The Raleigh/Durham radar (KRAX), 79 km from the middle of the area, began a volume at 23:31 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.

What was reported inside it

TimeReportWhereRemark
Aug 29, 8:25 PM EDTFLASH FLOOD10 S Tarboro, NCSEVERAL ROADS STILL CLOSED IN THE SOUTHERN PART OF EDGECOMBE COUNTY.
Aug 29, 9:45 PM EDTFLASH FLOOD10 S Tarboro, NCFLOODING ABATED. ROADS WERE REPORTED TO NOW BE OPEN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Newport, NC (KMHX), launched 12:00Z, 11.5 hours before the alert went out and 138 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, Newport, NC at 12:00Z on 2011-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1590 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, Newport, NC at 12:00Z on 2011-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.193958Sfc1 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
1590 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
913 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
29 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

873 
WGUS52 KRAH 292330
FFWRAH
NCC065-127-300230-
/O.NEW.KRAH.FF.W.0045.110829T2330Z-110830T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
730 PM EDT MON AUG 29 2011

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EDGECOMBE COUNTY IN CENTRAL NORTH CAROLINA
  NASH COUNTY IN CENTRAL NORTH CAROLINA

* UNTIL 1030 PM EDT

* AT 726 PM EDT...LOCAL LAW ENFORCEMENT REPORTED THUNDERSTORMS 
WITH   VERY HEAVY RAIN PRODUCING FLOODING OVER SECTIONS OF EDGECOMBE 
COUNTY ESPECIALLY IN THE VICINITY OF ROCKY MOUNT AND NEAR PINETOPS 
AND MACCLESFIELD. DOPPLER RADAR ESTIMATED AROUND 2 INCHES OF RAIN 
HAS FALLEN OVER THIS AREA. EDGECOMBE COUNTY SHERIFF OFFICE ARE IN 
THE PROCESS OF CLOSING SEVERAL ROADS IN SOUTHERN EDGECOMBE 
COUNTY.


* LOCATIONS THREATENED WITH FLOODING INCLUDE TARBORO...ROCKY MOUNT
  AND DORTCHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROAD.
AS LITTLE AS 6 INCHES OF WATER CAN CAUSE YOU TO LOSE CONTROL OF YOUR
VEHICLE. TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES
INCLUDING SPORT UTILITY VEHICLES AND PICKUP TRUCKS. TURN AROUND...
DONT DROWN.

FLASH FLOODING IS EXTREMELY DANGEROUS. NUMEROUS ROADS AND LOW LYING
AREAS WILL QUICKLY FLOOD. FLOOD WATERS WILL ALSO THREATEN SOME HOMES
AND BUSINESSES. IF YOU ARE EXPERIENCING FLOODING OR LIVE IN A FLOOD
PRONE AREA MOVE TO HIGHER GROUND.

PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE BY CALLING...
1...8 7 7...6 3 3...6 7 7 2 OR NOTIFY YOUR LOCAL LAW ENFORCEMENT
AGENCY.

&&

LAT...LON 3582 7737 3583 7741 3568 7766 3573 7772
      3583 7776 3587 7783 3584 7785 3585 7789
      3589 7795 3606 7785 3600 7740 3588 7734

$$

WSS
2 follow-up statements
579 
WGUS72 KRAH 300047
FFSRAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
847 PM EDT MON AUG 29 2011

NCC065-127-300230-
/O.CON.KRAH.FF.W.0045.000000T0000Z-110830T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
EDGECOMBE NC-NASH NC-
847 PM EDT MON AUG 29 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT FOR EAST
CENTRAL NASH AND EDGECOMBE COUNTIES...

AT 842 PM EDT...LOCAL LAW ENFORCEMENT REPORTED SEVERAL ROADS OVER 
SOUTHERN EDGECOMBE COUNTY REMAINED CLOSED DUE TO HIGH WATER. 
SCATTERED SHOWERS WITH ADDITIONAL HEAVY RAIN WILL CROSS EASTERN NASH 
AND EDGECOMBE COUNTIES THROUGH 10 PM. AN ADDITIONAL HALF INCH OF 
RAIN MAY FALL PRIOR TO 10 PM. 

LOCATIONS THREATENED BY FLOODING INCLUDE BUT ARE NOT LIMITED TO
TARBORO...ROCKY MOUNT AND DORTCHES

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE BY CALLING...
1...8 7 7...6 3 3...6 7 7 2 OR NOTIFY YOUR LOCAL LAW ENFORCEMENT
AGENCY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
MONDAY EVENING FOR CENTRAL NORTH CAROLINA.

&&

LAT...LON 3582 7737 3583 7741 3568 7766 3573 7772
      3583 7776 3587 7783 3584 7785 3585 7789
      3589 7795 3606 7785 3600 7740 3588 7734

$$

WSS
756 
WGUS72 KRAH 300203
FFSRAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
1003 PM EDT MON AUG 29 2011

NCC065-127-300210-
/O.CAN.KRAH.FF.W.0045.000000T0000Z-110830T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
EDGECOMBE NC-NASH NC-
1003 PM EDT MON AUG 29 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EAST CENTRAL NASH
AND EDGECOMBE COUNTIES...

AT 10 PM EDT...COUNTY OFFICIALS IN EDGECOMBE COUNTY REPORTED THAT 
THE HIGH WATER OVER THE SOUTHERN PART OF THE COUNTY HAS RECEDED AND 
ROADS THAT WERE CLOSED EARLIER HAVE BEEN REOPENED TO TRAFFIC. THUS 
THE FLASH FLOOD WARNING HAS BEEN CANCELED.

AREAS OF LIGHT TO MODERATE RAINFALL WILL CONTINUE OVER THE NORTHERN 
COASTAL PLAIN INTO THE OVERNIGHT HOURS BEFORE DISSIPATING. 
HOWEVER...THIS ADDITIONAL RAINFALL SHOULD NOT LEAD TO ADDITIONAL 
FLOODING.

LAT...LON 3582 7737 3583 7741 3568 7766 3573 7772
      3583 7776 3587 7783 3584 7785 3585 7789
      3589 7795 3606 7785 3600 7740 3588 7734

$$

WSS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 3:52 PM EDTSpecial Weather StatementRAHAlamance, Chatham, Durham, Franklin, Granville, Orange and 3 more53 min
Aug 29, 4:13 PM EDTSevere Thunderstorm WarningRAHDurham, Franklin, Granville, Wake62 min
Aug 29, 4:35 PM EDTSpecial Weather StatementRAHRichmond55 min
Aug 29, 4:42 PM EDTSevere Thunderstorm WarningRAHDurham, Granville, Person63 min
Aug 29, 4:44 PM EDTSpecial Weather StatementRAHAlamance, Orange61 min
Aug 29, 4:48 PM EDTSevere Thunderstorm WarningRAHMontgomery, Richmond57 min
Aug 29, 4:55 PM EDTSevere Thunderstorm WarningRAHAlamance, Guilford50 min
Aug 29, 5:05 PM EDTSevere Thunderstorm WarningRAHFranklin, Nash55 min
Aug 29, 5:14 PM EDTSevere Thunderstorm WarningRAHFranklin, Johnston, Wake24 min
Aug 29, 5:21 PM EDTSevere Thunderstorm WarningRAHAlamance, Orange39 min
Aug 29, 5:37 PM EDTSpecial Weather StatementRAHMontgomery, Moore53 min
Aug 29, 6:01 PM EDTSevere Thunderstorm WarningRAHEdgecombe, Halifax, Nash44 min
Aug 29, 6:06 PM EDTSevere Thunderstorm WarningRAHChatham39 min
Aug 29, 6:08 PM EDTSpecial Weather StatementRAHGranville, Vance67 min
Aug 29, 6:13 PM EDTTornado WarningRAHEdgecombe, Nash, Wilson47 min
Aug 29, 6:19 PM EDTSpecial Weather StatementRAHAnson, Montgomery, Richmond, Stanly56 min
Aug 29, 6:30 PM EDTSpecial Weather StatementRAHWake60 min
Aug 29, 6:41 PM EDTTornado WarningRAHEdgecombe34 min
Aug 29, 6:45 PM EDTSevere Thunderstorm WarningRAHChatham, Harnett, Wake45 min
Aug 29, 6:47 PM EDTSpecial Weather StatementRAHFranklin, Nash58 min
Aug 29, 6:53 PM EDTSpecial Weather StatementRAHLee, Moore52 min
Aug 29, 7:04 PM EDTSevere Thunderstorm WarningRAHFranklin, Wake41 min
Aug 29, 7:15 PM EDTAreal Flood AdvisoryRAHAnson63 min
Aug 29, 7:22 PM EDTAreal Flood AdvisoryRAHWake2 hr
Aug 29, 7:25 PM EDTSpecial Weather StatementRAHAnson, Montgomery, Richmond, Stanly50 min
Aug 29, 7:29 PM EDTSpecial Weather StatementRAHHarnett61 min
Aug 29, 7:41 PM EDTAreal Flood AdvisoryRAHFranklin, Nash2 hr

Nearby

Flash Flood Warnings in North Carolina, 2011Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.