Alert archive / North Carolina / Flash Flood Warnings in 2011
Flash Flood Warning 47, NWS Raleigh, NC
NWS Raleigh, NC issued this flash flood warning at Sep 6, 2011, 10:11 PM EDT for 5 counties in North Carolina. It was in force for 4 hr. 5 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
- Sep 6, 2011, 10:11 PM EDT (02:11 UTC)
- Expired
- Sep 7, 2011, 1:45 AM EDT
- In force
- 4 hr
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Chatham County, NC, Durham County, NC, Harnett County, NC, Lee County, NC, Wake County, NC
The radar
The Raleigh/Durham radar (KRAX), 41 km from the middle of the area, began a volume at 02:12 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 6, 10:40 PM EDT | FLASH FLOOD | 2 N Durham, NC | POLICE REPORT THE INTERSECTION OF BERKELY STREET AND ENGLEWOOD AVE IN DURHAM IS IMPASSABLE BECAUSE OF FLOODING. PD ON SCENE BLOCKING INTERSECTION. |
| Sep 6, 11:30 PM EDT | FLASH FLOOD | 3 Nnw Durham, NC | INDIAN TRAIL ROAD CLOSED BECAUSE OF RISING WATER. |
| Sep 6, 11:30 PM EDT | FLASH FLOOD | 3 Nw Durham, NC | INTERSECTION OF MORRENE ROAD AND TREMONT DRIVE WAS FLOODED. |
| Sep 6, 11:30 PM EDT | FLASH FLOOD | 3 Nw Parkwood, NC | ROLLINGWOOD DRIVE CLOSED AT THE 4800 BLOCK BECUASE OF FLOODING. |
| Sep 6, 11:50 PM EDT | FLASH FLOOD | 2 Ne Durham, NC | HIGH WATER HAS CLOSED THE INTERSECTION OF NORTH ALSTON AVE AND JUNIPER ST. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 2.2 hours before the alert went out and 94 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 487 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 253 m²/s²
- 0-3 km storm-relative helicity
- 256 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
432
WGUS52 KRAH 070211
FFWRAH
NCC037-063-085-105-183-070615-
/O.NEW.KRAH.FF.W.0047.110907T0211Z-110907T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
1011 PM EDT TUE SEP 6 2011
THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CHATHAM COUNTY IN CENTRAL NORTH CAROLINA
DURHAM COUNTY IN CENTRAL NORTH CAROLINA
LEE COUNTY IN CENTRAL NORTH CAROLINA
WAKE COUNTY IN CENTRAL NORTH CAROLINA
HARNETT COUNTY IN CENTRAL NORTH CAROLINA
* UNTIL 215 AM EDT
* AT 1002 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAIN PRODUCING FLOODING OVER WESTERN
HARNETT...WESTERN WAKE...SOUTHEASTERN LEE...DURHAM AND EASTERN
CHATHAM COUNTIES. DOPPLER RADAR ESTIMATED THAT TWO TO FOUR INCHES
OF RAIN HAS FALLEN FROM NEAR PINEVIEW...TO SEMINOLE...TO NEW
HILL...TO DURHAM.
* LOCATIONS THREATENED WITH FLOODING INCLUDE ROUGEMONT...RDU
INTERNATIONAL AIRPORT...DURHAM AND CARY.
AN ADDITIONAL ONE TO TWO INCHES OF RAINFALL CAN BE EXPECTED...WHICH
WILL RESULT IN ADDITIONAL FLOODING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. 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.
&&
LAT...LON 3624 7880 3607 7879 3607 7868 3604 7861
3521 7900 3519 7909 3526 7921 3555 7904
3562 7906 3624 7895
$$
MWS2 follow-up statements
970
WGUS72 KRAH 070346
FFSRAH
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
1146 PM EDT TUE SEP 6 2011
NCC037-063-085-105-183-070615-
/O.CON.KRAH.FF.W.0047.000000T0000Z-110907T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHATHAM NC-DURHAM NC-LEE NC-WAKE NC-HARNETT NC-
1146 PM EDT TUE SEP 6 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 AM EDT FOR
WESTERN HARNETT...WESTERN WAKE...SOUTHEASTERN LEE...DURHAM AND
EASTERN CHATHAM COUNTIES...
AT 1140 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A BAND OF SHOWERS AND THUNDERSTORMS THAT WERE TRAINING
REPEATEDLY OVER THE SAME AREA AND RESULTANTLY PRODUCING FLOODING IN
WESTERN HARNETT...WESTERN WAKE...SOUTHEASTERN LEE...DURHAM AND
EASTERN CHATHAM COUNTIES. DOPPLER RADAR ESTIMATED THAT TWO TO FIVE
INCHES OF RAIN HAS FALLEN OVER IN THE PAST FEW HOURS FROM PINEVIEW
AND SEMINOLE...TO NEW HILL...TO DURHAM AND GORMAN.
MOST OF THE FLOODING HAS BEEN REPORTED IN AND AROUND THE CITY OF
DURHAM...WHICH HAS RESULTED IN IMPASSABLE ROADS AND CLOSURES THAT
INCLUDE THE FOLLOWING...THE INTERSECTION BERKLEY STREET AND
ENGLEWOOD AVENUE...THE INTERSECTION OF TREMONT DRIVE AND MORRENE
ROAD...THE 2500 BLOCK OF INDIAN TRAIL...AND THE 4800 BLOCK OF
ROLLINGWOOD DRIVE. OTHER...MINOR FLOODING HAS BEEN REPORTED IN LEE
COUNTY...ON HORNER BOULEVARD NEAR LEE AVENUE...ON SEVENTH STREET
NEAR BARNES STREET...AND IN HARNETT COUNTY AT THE 1100 BLOCK OF NC
HIGHWAY 27 WEST.
LOCATIONS THREATENED BY FLOODING INCLUDE BUT ARE NOT LIMITED TO
ROUGEMONT...RDU INTERNATIONAL AIRPORT...DURHAM AND CARY.
ANOTHER ONE TO TWO INCHES OF RAIN WILL BE POSSIBLE IN THESE AREAS
UNTIL THE BAND OF SHOWERS AND STORMS ENDS FROM SOUTH TO NORTH DURING
THE NEXT COUPLE OF HOURS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
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.
&&
LAT...LON 3624 7880 3607 7879 3607 7868 3604 7861
3521 7900 3519 7909 3526 7921 3555 7904
3562 7906 3624 7895
$$
MWS781
WGUS72 KRAH 070545
FFSRAH
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
145 AM EDT WED SEP 7 2011
NCC037-063-085-105-183-070554-
/O.CAN.KRAH.FF.W.0047.000000T0000Z-110907T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHATHAM NC-DURHAM NC-LEE NC-WAKE NC-HARNETT NC-
145 AM EDT WED SEP 7 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR WESTERN HARNETT...
WESTERN WAKE...SOUTHEASTERN LEE...DURHAM AND EASTERN CHATHAM
COUNTIES...
HEAVY RAINFALL HAS ENDED ACROSS THE AREA THIS EVENING AND NO ONGOING
FLOODING WAS REPORTED BY LOCAL LAW ENFORCEMENT.
LAT...LON 3624 7880 3607 7879 3607 7868 3604 7861
3521 7900 3519 7909 3526 7921 3555 7904
3562 7906 3624 7895
$$
77The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 8:26 PM EDT | Special Weather Statement | RAH | Cumberland, Harnett, Hoke, Lee | 64 min |
| Sep 6, 9:22 PM EDT | Areal Flood Advisory | RAH | Chatham, Cumberland, Harnett, Hoke, Lee, Moore and 1 more | 4 hr |
| Sep 6, 9:44 PM EDT | Special Weather Statement | RAH | Wake | 46 min |
| Sep 6, 9:58 PM EDT | Special Weather Statement | RAH | Harnett, Lee | 62 min |
| Sep 6, 10:22 PM EDT | Special Weather Statement | RAH | Durham | 53 min |
| Sep 7, 12:29 AM EDT | Areal Flood Advisory | RAH | Granville, Person | 108 min |
| Sep 7, 2:05 AM EDT | Special Weather Statement | RAH | Sampson | 55 min |
| Sep 7, 2:26 AM EDT | Areal Flood Advisory | RAH | Johnston, Sampson, Wayne | 3 hr |
| Sep 7, 3:47 AM EDT | Special Weather Statement | RAH | Nash, Wilson | 43 min |
| Sep 7, 3:52 AM EDT | Areal Flood Advisory | RAH | Johnston, Nash, Wilson | 3 hr |
| Sep 7, 4:28 AM EDT | Special Weather Statement | RAH | Warren | 47 min |
| Sep 7, 8:41 AM EDT | Special Weather Statement | RAH | Edgecombe, Halifax, Nash | 64 min |
| Sep 7, 5:58 PM EDT | Special Weather Statement | RAH | Warren | 62 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.