Alert archive / North Carolina / Flash Flood Warnings in 2011
Flash Flood Warning 9, NWS Raleigh, NC
NWS Raleigh, NC issued this flash flood warning at Jun 10, 2011, 5:27 PM EDT for Forsyth County, North Carolina. It was in force for 36 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
- Jun 10, 2011, 5:27 PM EDT (21:27 UTC)
- Expired
- Jun 10, 2011, 6:03 PM EDT
- In force
- 36 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Flood severity
- None
County Forsyth County, NC
The radar
The Roanoke radar (KFCX), 105 km from the middle of the area, began a volume at 21:28 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, 9.5 hours before the alert went out and 34 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
- 332 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 1122 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -55 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted, in the capitals the NWS used until 2016.
539
WGUS52 KRAH 102127
FFWRAH
NCC067-102330-
/O.NEW.KRAH.FF.W.0009.110610T2127Z-110610T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
527 PM EDT FRI JUN 10 2011
THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A
* FLASH FLOOD WARNING FOR...
FORSYTH COUNTY IN CENTRAL NORTH CAROLINA
* UNTIL 730 PM EDT
* AT 521 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAIN PRODUCING FLOODING OVER WINSTON
SALEM NEAR ARDMORE. DOPPLER RADAR ESTIMATED THAT AROUND TWO AND A
HALF INCHES OF RAIN HAS FALLEN OVER SOUTHERN PORTIONS OF WINSTON
SALEM ALONG INTERSTATE 40 AND SILAS CREEK PARKWAY.
* LOCATIONS THREATENED WITH FLOODING INCLUDE WINSTON-SALEM.
AN ADDITIONAL ONE TO TWO INCHES OF RAINFALL ARE STILL POSSIBLE
RESULTING IN ADDITIONAL FLOODING.
FLASH FLOODING IS POSSIBLE IN THE FOLLOWING STREAMS AND
DRAINAGES...MUDDY CREEK...BRUSHY FORK...SALEM CREEK...AND SILAS
CREEK.
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.
NEVER ALLOW CHILDREN TO PLAY NEAR STORM DRAINS OR NEAR FLOODED CREEKS
AND STREAMS. EXCESSIVE RUNOFF WILL CREATE RAPIDLY FLOWING WATER THAT
CAN EASILY SWEEP A CHILD DOWNSTREAM.
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 3619 8037 3614 8019 3602 8018 3602 8021
3600 8021 3599 8038
$$
JO2 follow-up statements
288
WGUS72 KRAH 102148
FFSRAH
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
548 PM EDT FRI JUN 10 2011
NCC067-102330-
/O.CON.KRAH.FF.W.0009.000000T0000Z-110610T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FORSYTH NC-
548 PM EDT FRI JUN 10 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR
CENTRAL FORSYTH COUNTY INCLUDING WINSTON SALEM...
AT 541 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
HEAVY RAIN OVER PORTIONS OF WINSTON SALEM WAS DECREASING IN
INTENSITY. RADAR ESTIMATES THAT UP TO 3 INCHES OF RAIN HAS FALLEN
OVER OVER SOUTHERN PORTIONS OF WINSTON SALEM ALONG INTERSTATE
40...SILAS CREEK PARKWAY AND PETERS CREEK PARKWAY.
THOUGH THE HEAVY RAINFALL IS ENDING...RUNOFF FROM THE EARLIER STORM
WILL CONTINUE TO THREATEN URBAN AREAS WITH FLOODING THROUGH 615 PM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROAD.
AS LITTLE AS 6 INCHES OF WATER CAN CAUSE YOU TO LOSE CONTROL OF YOUR
VEHICLE. TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES
INCLUDING SPORT UTILITY VEHICLES AND PICKUP TRUCKS. TURN AROUND...
DONT DROWN.
PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE BY CALLING...
1...8 7 7...6 3 3...6 7 7 2 OR NOTIFY YOUR LOCAL LAW ENFORCEMENT
AGENCY.
&&
LAT...LON 3619 8037 3614 8019 3602 8018 3602 8021
3600 8021 3599 8038
$$
JO389
WGUS72 KRAH 102203
FFSRAH
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
603 PM EDT FRI JUN 10 2011
NCC067-102210-
/O.CAN.KRAH.FF.W.0009.000000T0000Z-110610T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FORSYTH NC-
603 PM EDT FRI JUN 10 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL FORSYTH
COUNTY AND WINSTON SALEM...
AT 556 PM EDT...THE THUNDERSTORM WHICH PRODUCED HEAVY RAIN OVER
SOUTHERN PORTIONS OF WINSTON SALEM HAS DISSIPATED. DOPPLER RADAR
ESTIMATED THAT UP TO 3 INCHES OF RAIN HAS FALLEN OVER SOUTHERN
PORTIONS OF WINSTON SALEM ALONG INTERSTATE 40 AND SILAS CREEK
PARKWAY.
THOUGH THE FLOOD WARNING HAS BEEN CANCELED SOME MINOR FLOODING AND
PONDING OF WATER ON THE ROADS ARE STILL POSSIBLE DUE TO RUNOFF FROM
THE EARLIER STORM.
LAT...LON 3619 8037 3614 8019 3602 8018 3602 8021
3600 8021 3599 8038
$$
JOThe office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 10:51 PM EDT | Special Weather Statement | RAH | Stanly | 54 min |
| Jun 10, 7:47 AM EDT | Special Weather Statement | RAH | Wayne | 58 min |
| Jun 10, 8:43 AM EDT | Special Weather Statement | RAH | Wayne | 47 min |
| Jun 10, 4:37 PM EDT | Special Weather Statement | RAH | Lee, Moore | 53 min |
| Jun 10, 4:38 PM EDT | Special Weather Statement | RAH | Halifax | 37 min |
| Jun 10, 4:47 PM EDT | Severe Thunderstorm Warning | RAH | Harnett, Lee, Moore | 43 min |
| Jun 10, 4:49 PM EDT | Special Weather Statement | RAH | Halifax | 56 min |
| Jun 10, 5:04 PM EDT | Severe Thunderstorm Warning | RAH | Halifax | 41 min |
| Jun 10, 5:08 PM EDT | Special Weather Statement | RAH | Forsyth | 52 min |
| Jun 10, 5:10 PM EDT | Areal Flood Advisory | RAH | Forsyth | 71 min |
| Jun 10, 5:17 PM EDT | Areal Flood Advisory | RAH | Halifax | 3 hr |
| Jun 10, 5:18 PM EDT | Areal Flood Advisory | RAH | Lee, Moore | 75 min |
| Jun 10, 5:45 PM EDT | Special Weather Statement | RAH | Harnett, Moore | 60 min |
| Jun 10, 5:52 PM EDT | Severe Thunderstorm Warning | RAH | Franklin, Halifax, Nash, Warren | 53 min |
| Jun 10, 5:58 PM EDT | Special Weather Statement | RAH | Anson, Stanly | 62 min |
| Jun 10, 6:02 PM EDT | Special Weather Statement | RAH | Edgecombe | 58 min |
| Jun 10, 6:04 PM EDT | Special Weather Statement | RAH | Chatham | 56 min |
| Jun 10, 6:18 PM EDT | Special Weather Statement | RAH | Montgomery | 57 min |
| Jun 10, 6:25 PM EDT | Severe Thunderstorm Warning | RAH | Hoke, Moore, Richmond, Scotland | 65 min |
| Jun 10, 6:35 PM EDT | Special Weather Statement | RAH | Halifax | 55 min |
| Jun 10, 6:47 PM EDT | Special Weather Statement | RAH | Wake | 43 min |
| Jun 10, 6:56 PM EDT | Special Weather Statement | RAH | Chatham | 64 min |
| Jun 10, 7:09 PM EDT | Severe Thunderstorm Warning | RAH | Franklin, Nash | 51 min |
| Jun 10, 7:14 PM EDT | Areal Flood Advisory | RAH | Moore | 85 min |
| Jun 10, 7:27 PM EDT | Areal Flood Advisory | RAH | Edgecombe, Franklin, Halifax, Nash, Warren | 105 min |
| Jun 10, 7:36 PM EDT | Special Weather Statement | RAH | Franklin | 39 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.