Alert archive / North Carolina / Flash Flood Warnings in 2012
Flash Flood Warning 1, NWS Raleigh, NC
NWS Raleigh, NC issued this flash flood warning at Mar 20, 2012, 7:39 PM EDT for Davidson County, Forsyth County, Guilford 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
- Mar 20, 2012, 7:39 PM EDT (23:39 UTC)
- Expired
- Mar 20, 2012, 10:27 PM EDT
- In force
- 3 hr
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Davidson County, NC, Forsyth County, NC, Guilford County, NC
The radar
The Roanoke radar (KFCX), 112 km from the middle of the area, began a volume at 23:41 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 |
|---|---|---|---|
| Mar 20, 9:45 PM EDT | FLASH FLOOD | 3 Nne Midway, NC | FLASH FLOODING CLOSED THE ROAD AT BRIDGETON ROAD NEAR PETERS CREEK PARKWAY |
| Mar 20, 9:45 PM EDT | FLASH FLOOD | 5 Sw Sedge Garden, NC | ROAD CLOSED AT 4200 BLOCK OF FOX MEADOW LANE |
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 12:00Z, 11.7 hours before the alert went out and 24 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
- 746 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 926 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
021
WGUS52 KRAH 202339
FFWRAH
NCC057-067-081-210230-
/O.NEW.KRAH.FF.W.0001.120320T2339Z-120321T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
739 PM EDT TUE MAR 20 2012
THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTH DAVIDSON COUNTY IN CENTRAL NORTH CAROLINA
SOUTHEAST FORSYTH COUNTY IN CENTRAL NORTH CAROLINA
GUILFORD COUNTY IN CENTRAL NORTH CAROLINA
* UNTIL 1030 PM EDT
* AT 735 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS PRODUCING RAINFALL RATES IN EXCESS OF 2
INCHES PER HOUR FROM MIDWAY TO SEDGE GARDEN... KERNERSVILLE...
SUMMERFIELD AND MONTICELLO... MOVING LITTLE.
SPOTTERS AT MIDWAY IN NORTHERN DAVIDSON COUNTY REPORTED OVER AN INCH
OF RAIN IN 30 MINUTES WITH MINOR FLOODING ALREADY OCCURRING. ANY
ADDITIONAL HEAVY RAIN WILL PRODUCE FLASH FLOODING.
* LOCATIONS THREATENED WITH FLOODING INCLUDE SOUTHERN
WINSTON-SALEM... MIDWAY... KERNERSVILLE... NORTH HIGH POINT...
GREENSBORO... SUMMERFIELD... PTI AIRPORT... SEDGE GARDEN...
MONTICELLO.
AN ADDITIONAL 1 TO 2 INCHES OF RAIN ARE LIKELY... FLASH FLOODING IN
URBAN AREAS IS LIKELY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROAD.
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 3627 8002 3625 7953 3598 7954 3598 7972
3585 8040 3589 8042 3589 8037 3593 8037
3596 8038 3599 8043 3601 8042 3602 8043
$$
BADGETT3 follow-up statements
924
WGUS72 KRAH 210022
FFSRAH
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
822 PM EDT TUE MAR 20 2012
NCC057-067-081-210230-
/O.CON.KRAH.FF.W.0001.000000T0000Z-120321T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DAVIDSON NC-FORSYTH NC-GUILFORD NC-
822 PM EDT TUE MAR 20 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT FOR
GUILFORD... SOUTHEASTERN FORSYTH... AND NORTHERN DAVIDSON COUNTIES...
AT 821 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE SLOW MOVING THUNDERSTORMS PRODUCING FLOODING OVER
FORSYTH... NORTHERN DAVIDSON... AND GUILFORD COUNTIES. THE
THUNDERSTORMS WITH THE HEAVIEST RAIN WERE LOCATED FROM WALKERTOWN TO
GREENSBORO TO GIBSONVILLE... MOVING LITTLE. DOPPLER RADAR ESTIMATED
THAT RAINFALL RATES WERE STILL IN THE 1.5 TO 2 INCHES PER HOUR
RANGE. SPOTTERS HAVE REPORTED IN EXCESS OF 2 INCHES IN 45 MINUTES AT
MIDWAY. WINSTON-SALEM POLICE REPORT ACCIDENTS TO TO HYDROPLANING.
AN ADDITIONAL 1 TO 2 INCHES OF RAIN CAN STILL FALL THROUGH 900 PM
ESPECIALLY FROM GREENSBORO TO GIBSONVILLE. INTERSTATE 40 AND 85 ARE
SUSCEPTIBLE TO FLOODING AND ACCIDENTS.
LOCATIONS THREATENED BY FLOODING INCLUDE BUT ARE NOT LIMITED TO
WINSTON-SALEM...KERNERSVILLE AND GREENSBORO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES INCLUDING
SPORT UTILITY VEHICLES AND PICKUP TRUCKS. TURN AROUND...DONT DROWN.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 3627 8002 3625 7953 3598 7954 3598 7972
3585 8040 3589 8042 3589 8037 3593 8037
3596 8038 3599 8043 3601 8042 3602 8043
$$
BADGETT017
WGUS72 KRAH 210111
FFSRAH
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
911 PM EDT TUE MAR 20 2012
NCC057-067-081-210230-
/O.CON.KRAH.FF.W.0001.000000T0000Z-120321T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DAVIDSON NC-FORSYTH NC-GUILFORD NC-
911 PM EDT TUE MAR 20 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT FOR
GUILFORD...SOUTHEASTERN FORSYTH AND NORTHERN DAVIDSON COUNTIES...
AT 909 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
STORMS WERE WEAKENING AND SHIFTING SOUTH OF THE REGION.
ADDITIONAL MOSTLY LIGHT RAIN IS EXPECTED THROUGH 1030 PM. RESIDUAL
FLOODING MAY CONTINUE THROUGH THAT TIME.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROAD.
TURN AROUND...DONT DROWN.
TO REPORT ANY FLOODING OR ROAD CLOSURES... CALL 8 0 0 4 4 4 7 9 2 8.
&&
LAT...LON 3627 8002 3625 7953 3598 7954 3598 7972
3585 8040 3589 8042 3589 8037 3593 8037
3596 8038 3599 8043 3601 8042 3602 8043
$$
BADGETT361
WGUS72 KRAH 210227
FFSRAH
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
1027 PM EDT TUE MAR 20 2012
NCC057-067-081-210234-
/O.CAN.KRAH.FF.W.0001.000000T0000Z-120321T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DAVIDSON NC-FORSYTH NC-GUILFORD NC-
1027 PM EDT TUE MAR 20 2012
...THE FLASH FLOOD WARNING HAS EXPIRED FOR GUILFORD...SOUTHEASTERN
FORSYTH AND NORTHERN DAVIDSON COUNTIES...
AT 1024 PM EDT... RADAR INDICATED THE FLOODING THREAT FROM HEAVY
RAIN HAD ENDED. A COUPLE OF AREAS STILL REPORTED FLOODING INCLUDING
BRIDGETON ROAD AT PETERS CREEK PARKWAY AND THE 4200 BLOCK OF MEADOW
LANE. PLEASE REFRAIN FROM DRIVING INTO THESE AREAS OR AREAS WHERE
THERE IS WATER OF UNKNOWN DEPTH COVERING ANY ROAD OR STREET.
TURN AROUND DONT DROWN.
LAT...LON 3627 8002 3625 7953 3598 7954 3598 7972
3585 8040 3589 8042 3589 8037 3593 8037
3596 8038 3599 8043 3601 8042 3602 8043
$$
BADGETTThe office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 2:33 AM EDT | Special Weather Statement | RAH | Granville, Vance | 57 min |
| Mar 20, 3:04 AM EDT | Special Weather Statement | RAH | Vance | 56 min |
| Mar 20, 4:57 AM EDT | Special Weather Statement | RAH | Durham | 63 min |
| Mar 20, 5:44 AM EDT | Special Weather Statement | RAH | Wake | 61 min |
| Mar 20, 5:59 AM EDT | Special Weather Statement | RAH | Wake | 61 min |
| Mar 20, 6:43 AM EDT | Special Weather Statement | RAH | Harnett, Lee | 62 min |
| Mar 20, 7:08 AM EDT | Special Weather Statement | RAH | Cumberland, Harnett, Hoke, Lee, Moore | 52 min |
| Mar 20, 9:26 AM EDT | Special Weather Statement | RAH | Granville | 64 min |
| Mar 20, 9:50 AM EDT | Special Weather Statement | RAH | Richmond | 55 min |
| Mar 20, 10:36 AM EDT | Special Weather Statement | RAH | Richmond | 54 min |
| Mar 20, 10:41 AM EDT | Special Weather Statement | RAH | Wake | 64 min |
| Mar 20, 4:04 PM EDT | Special Weather Statement | RAH | Franklin | 41 min |
| Mar 20, 4:51 PM EDT | Severe Thunderstorm Warning | RAH | Franklin, Nash | 39 min |
| Mar 20, 5:03 PM EDT | Special Weather Statement | RAH | Randolph | 57 min |
| Mar 20, 5:32 PM EDT | Special Weather Statement | RAH | Franklin | 58 min |
| Mar 20, 5:58 PM EDT | Severe Thunderstorm Warning | RAH | Franklin, Wake | 28 min |
| Mar 20, 6:36 PM EDT | Special Weather Statement | RAH | Davidson, Forsyth | 54 min |
| Mar 20, 7:04 PM EDT | Special Weather Statement | RAH | Davidson, Forsyth | 26 min |
| Mar 20, 7:13 PM EDT | Areal Flood Advisory | RAH | Davidson, Forsyth, Guilford | 3 hr |
| Mar 20, 7:16 PM EDT | Severe Thunderstorm Warning | RAH | Davidson, Forsyth, Guilford | 44 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.