Alert archive / North Carolina / Flash Flood Warnings in 2012
Flash Flood Warning 22, NWS Raleigh, NC
NWS Raleigh, NC issued this flash flood warning at Jul 28, 2012, 9:30 PM EDT for 4 counties in North Carolina. It was in force for 3 hr. 1 report 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
- Jul 28, 2012, 9:30 PM EDT (01:30 UTC)
- Expired
- Jul 29, 2012, 12:30 AM EDT
- In force
- 3 hr
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Chatham County, NC, Durham County, NC, Orange County, NC, Wake County, NC
The radar
The Raleigh/Durham radar (KRAX), 36 km from the middle of the area, began a volume at 01:34 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 |
|---|---|---|---|
| Jul 28, 9:52 PM EDT | FLASH FLOOD | 5 Sse Chapel Hill, NC | CREEK FLOODED OLD FEARRINGTON ROAD... ROAD CLOSED |
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, 1.5 hours before the alert went out and 101 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
- 846 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1942 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
209
WGUS52 KRAH 290130
FFWRAH
NCC037-063-135-183-290430-
/O.NEW.KRAH.FF.W.0022.120729T0130Z-120729T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
930 PM EDT SAT JUL 28 2012
THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN CHATHAM COUNTY IN CENTRAL NORTH CAROLINA
DURHAM COUNTY IN CENTRAL NORTH CAROLINA
ORANGE COUNTY IN CENTRAL NORTH CAROLINA
WAKE COUNTY IN CENTRAL NORTH CAROLINA
* UNTIL 1230 AM EDT
* AT 929 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAIN OVER RALEIGH... CHAPEL HILL...
AND DURHAM... MOVING EAST AT 25 MPH. THESE STORMS WERE PRODUCING
RAINFALL RATES IN EXCESS OF 3 INCHES PER HOUR. RAPID RUNOFF WILL
CAUSE FLASH FLOODING IN URBAN AREAS.
* LOCATIONS THREATENED WITH FLOODING INCLUDE HILLSBOROUGH...CHAPEL
HILL...CARRBORO...DURHAM...WAKE FOREST...RDU INTERNATIONAL...
RALEIGH...GARNER...FUQUAY-VARINA AND CARY.
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 3615 7880 3609 7881 3607 7879 3607 7868
3606 7864 3596 7847 3581 7828 3571 7847
3553 7869 3554 7878 3558 7891 3555 7894
3555 7897 3567 7914 3597 7927 3618 7926
$$
BADGETT1 follow-up statement
659
WGUS72 KRAH 290425
FFSRAH
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
1225 AM EDT SUN JUL 29 2012
NCC037-063-135-183-290431-
/O.EXP.KRAH.FF.W.0022.000000T0000Z-120729T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHATHAM NC-DURHAM NC-ORANGE NC-WAKE NC-
1225 AM EDT SUN JUL 29 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 1230 AM EDT FOR WAKE...
ORANGE...DURHAM AND NORTHEASTERN CHATHAM COUNTIES...
THE THUNDERSTORMS THAT PRODUCED HEAVY RAIN AND FLOODING HAVE MOVED
OUT OF THE WARNED AREA...AND THE FLOODING THREAT HAS ENDED.
LAW ENFORCEMENT IN CHATHAM COUNTY REPORTED FLOODING ON FARRINGTON
POINT ROAD NEAR OLD FARRINGTON POINT ROAD. MOTORISTS IN THE AREA
SHOULD CONTINUE TO USE CAUTION AS THE HIGH WATER RECEDES.
LAT...LON 3615 7880 3609 7881 3607 7879 3607 7868
3606 7864 3596 7847 3581 7828 3571 7847
3553 7869 3554 7878 3558 7891 3555 7894
3555 7897 3567 7914 3597 7927 3618 7926
$$
22The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 8:15 PM EDT | Severe Thunderstorm Warning | RAH | Franklin, Granville, Halifax, Vance, Warren | 60 min |
| Jul 28, 8:20 PM EDT | Severe Thunderstorm Warning | RAH | Montgomery, Randolph | 55 min |
| Jul 28, 8:38 PM EDT | Severe Thunderstorm Warning | RAH | Anson, Richmond | 50 min |
| Jul 28, 8:43 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Wake | 62 min |
| Jul 28, 9:11 PM EDT | Severe Thunderstorm Warning | RAH | Cumberland, Harnett, Hoke, Lee, Moore | 64 min |
| Jul 28, 9:17 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Durham, Wake | 58 min |
| Jul 28, 9:23 PM EDT | Severe Thunderstorm Warning | RAH | Edgecombe, Franklin, Halifax, Nash, Vance, Wake and 1 more | 52 min |
| Jul 28, 9:47 PM EDT | Severe Thunderstorm Warning | RAH | Johnston | 58 min |
| Jul 28, 10:29 PM EDT | Special Weather Statement | RAH | Edgecombe, Wayne, Wilson | 61 min |
Nearby
Flash Flood Warnings in North Carolina, 2012Every flash flood warning in 2012
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.