Alert archive / North Carolina / Flash Flood Warnings in 2011
Flash Flood Warning 31, NWS Raleigh, NC
NWS Raleigh, NC issued this flash flood warning at Aug 12, 2011, 12:38 PM EDT for Johnston County, Wayne County, North Carolina. It was in force for 85 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 12, 2011, 12:38 PM EDT (16:38 UTC)
- Expired
- Aug 12, 2011, 2:03 PM EDT
- In force
- 85 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Johnston County, NC, Wayne County, NC
The radar
The Raleigh/Durham radar (KRAX), 49 km from the middle of the area, began a volume at 16:42 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 12:00Z, 4.6 hours before the alert went out and 135 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.
- Mixed-layer CAPE
- 795 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 1042 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
162
WGUS52 KRAH 121638
FFWRAH
NCC101-191-121900-
/O.NEW.KRAH.FF.W.0031.110812T1638Z-110812T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
1238 PM EDT FRI AUG 12 2011
THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A
* FLASH FLOOD WARNING FOR...
JOHNSTON COUNTY IN CENTRAL NORTH CAROLINA
WAYNE COUNTY IN CENTRAL NORTH CAROLINA
* UNTIL 300 PM EDT
* AT 1233 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN LIKELY PRODUCING
FLOODING OVER PARTS OF SOUTHWEST WAYNE AND SOUTHEAST JOHNSTON
COUNTIES. DOPPLER RADAR ESTIMATED THAT OVER SIX INCHES OF RAIN
LIKELY HAD FALLEN FROM THUNDERSTORMS IN A SMALL AREA ALONG THE
WAYNE AND JOHNSTON COUNTY BORDER...JUST NORTH OF HIGHWAY 13.
* LOCATIONS THREATENED WITH FLOODING INCLUDE MOUNT OLIVE.
AN ADDITIONAL ONE TO TWO INCHES OF RAIN IS POSSIBLE IN SOME AREAS.
THIS WILL RESULT IN A CONTINUED FLOODING THREAT.
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.
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 3518 7806 3525 7827 3529 7831 3527 7835
3526 7843 3540 7844 3538 7798
$$
DJF2 follow-up statements
617
WGUS72 KRAH 121714
FFSRAH
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
114 PM EDT FRI AUG 12 2011
NCC101-191-121900-
/O.CON.KRAH.FF.W.0031.000000T0000Z-110812T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JOHNSTON NC-WAYNE NC-
114 PM EDT FRI AUG 12 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 PM EDT FOR
SOUTHWESTERN WAYNE AND SOUTHEASTERN JOHNSTON COUNTIES...
AT 107 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE ISOLATED THUNDERSTORMS WITH VERY HEAVY RAIN OVER PARTS OF
SOUTHWEST WAYNE AND SOUTHEAST JOHNSTON COUNTIES. DOPPLER RADAR
ESTIMATED THAT NEARLY SEVEN INCHES OF RAIN LIKELY HAD FALLEN IN A
SMALL AREA ALONG THE WAYNE AND JOHNSTON COUNTY BORDER...NORTH OF
HIGHWAY 13. THIS AREA WAS ALSO ABOUT FIVE MILES WEST OF MAR-MAC.
ISOLATED THUNDERSTORMS COULD PRODUCE AN ADDITIONAL INCH OF RAIN...
MAINTAINING THE CONCERN FOR FLOODING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE BY CALLING...
1...8 7 7...6 3 3...6 7 7 2 OR NOTIFY YOUR LOCAL LAW ENFORCEMENT
AGENCY.
&&
LAT...LON 3518 7806 3525 7827 3529 7831 3527 7835
3526 7843 3540 7844 3538 7798
$$
DJF076
WGUS72 KRAH 121803
FFSRAH
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
203 PM EDT FRI AUG 12 2011
NCC101-191-121810-
/O.CAN.KRAH.FF.W.0031.000000T0000Z-110812T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JOHNSTON NC-WAYNE NC-
203 PM EDT FRI AUG 12 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHWESTERN WAYNE
AND SOUTHEASTERN JOHNSTON COUNTIES...
AT 200 PM EDT...SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN HAD
DIMINISHED OVER SOUTHWEST WAYNE AND SOUTHEAST JOHNSTON COUNTIES. LAW
ENFORCEMENT FROM BOTH WAYNE AND JOHNSTON COUNTIES REPORTED NO
PROBLEMS FROM STANDING WATER. EARLIER...WITH THUNDERSTORMS...THERE
WAS PONDING OF WATER ON ROADS IN MOUNT OLIVE...BUT NO FLASH FLOOD
THREAT. AS A RESULT...THE FLASH FLOOD WARNING HAS BEEN CANCELLED.
STILL...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED THAT AROUND
SEVEN INCHES OF RAIN LIKELY FELL IN A SMALL AREA NEAR THE WAYNE AND
JOHNSTON COUNTY BORDER...NORTH OF HIGHWAY 13 AND WEST OF MAR-MAC.
WHEN TRAVELLING THIS AFTERNOON IN THE AREA...USE CAUTION. BE SURE TO
AVOID ANY AREA WHERE WATER COVERS A ROADWAY. SMALL STREAMS AND
CREEKS MAY BE SWOLLEN...AND ALSO BE SURE TO STAY AWAY FROM ANY WATER
RUNNING HIGH AND FLOWING FAST.
STAY TUNED TO THIS STATION FOR THE LATEST WEATHER INFORMATION.
LAT...LON 3518 7806 3525 7827 3529 7831 3527 7835
3526 7843 3540 7844 3538 7798
$$
DJFThe office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 9:23 AM EDT | Special Weather Statement | RAH | Nash | 67 min |
| Aug 12, 10:08 AM EDT | Special Weather Statement | RAH | Franklin, Nash | 52 min |
| Aug 12, 10:43 AM EDT | Severe Thunderstorm Warning | RAH | Franklin | 47 min |
| Aug 12, 10:57 AM EDT | Areal Flood Advisory | RAH | Franklin, Nash, Wake | 93 min |
| Aug 12, 11:09 AM EDT | Special Weather Statement | RAH | Wayne | 36 min |
| Aug 12, 11:22 AM EDT | Severe Thunderstorm Warning | RAH | Johnston, Wayne | 53 min |
| Aug 12, 11:40 AM EDT | Special Weather Statement | RAH | Wilson | 50 min |
| Aug 12, 11:52 AM EDT | Special Weather Statement | RAH | Franklin | 53 min |
| Aug 12, 11:53 AM EDT | Areal Flood Advisory | RAH | Johnston, Wayne | 2 hr |
| Aug 12, 12:21 PM EDT | Special Weather Statement | RAH | Wilson | 39 min |
| Aug 12, 12:31 PM EDT | Severe Thunderstorm Warning | RAH | Wilson | 44 min |
| Aug 12, 12:53 PM EDT | Special Weather Statement | RAH | Wayne | 22 min |
| Aug 12, 12:58 PM EDT | Severe Thunderstorm Warning | RAH | Wayne | 31 min |
| Aug 12, 1:39 PM EDT | Special Weather Statement | RAH | Harnett | 66 min |
| Aug 12, 3:10 PM EDT | Special Weather Statement | RAH | Chatham | 50 min |
| Aug 12, 3:31 PM EDT | Special Weather Statement | RAH | Chatham, Lee, Moore | 59 min |
| Aug 12, 3:49 PM EDT | Areal Flood Advisory | RAH | Anson, Stanly | 110 min |
| Aug 12, 4:02 PM EDT | Flash Flood Warning | RAH | Anson, Stanly | 87 min |
| Aug 12, 4:31 PM EDT | Special Weather Statement | RAH | Stanly | 59 min |
| Aug 12, 4:36 PM EDT | Special Weather Statement | RAH | Orange | 39 min |
| Aug 12, 4:44 PM EDT | Special Weather Statement | RAH | Randolph | 61 min |
| Aug 12, 4:57 PM EDT | Special Weather Statement | RAH | Scotland | 63 min |
| Aug 12, 4:58 PM EDT | Areal Flood Advisory | RAH | Alamance, Chatham, Orange, Randolph | 108 min |
| Aug 12, 5:06 PM EDT | Areal Flood Advisory | RAH | Scotland | 2 hr |
| Aug 12, 5:19 PM EDT | Special Weather Statement | RAH | Orange | 56 min |
| Aug 12, 5:23 PM EDT | Special Weather Statement | RAH | Alamance | 52 min |
| Aug 12, 5:36 PM EDT | Flash Flood Warning | RAH | Richmond, Scotland | 85 min |
| Aug 12, 5:45 PM EDT | Special Weather Statement | RAH | Alamance | 60 min |
| Aug 12, 5:55 PM EDT | Areal Flood Advisory | RAH | Guilford | 24 min |
| Aug 12, 6:16 PM EDT | Flash Flood Warning | RAH | Guilford | 71 min |
| Aug 12, 6:31 PM EDT | Special Weather Statement | RAH | Person | 59 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.