Alert archive / North Carolina / Flash Flood Warnings in 2012

Flash Flood Warning 2, NWS Raleigh, NC

April 21, 2012Anson County, Montgomery County, Richmond County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Apr 21, 2012, 8:13 PM EDT for Anson County, Montgomery County, Richmond County, North Carolina. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 21, 2012, 8:13 PM EDT (00:13 UTC)
Expired: Apr 21, 2012, 11:15 PM EDT
In force: 3 hr
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Flood severity: None

Counties Anson County, NC, Montgomery County, NC, Richmond County, NC

The radar

The Raleigh/Durham radar (KRAX), 145 km from the middle of the area, began a volume at 00:15 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 00:00Z, 0.2 hours before the alert went out and 99 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 259 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1280 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: -12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

651 
WGUS52 KRAH 220013
FFWRAH
NCC007-123-153-220315-
/O.NEW.KRAH.FF.W.0002.120422T0013Z-120422T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
813 PM EDT SAT APR 21 2012

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ANSON COUNTY IN CENTRAL NORTH CAROLINA
  MONTGOMERY COUNTY IN CENTRAL NORTH CAROLINA
  RICHMOND COUNTY IN CENTRAL NORTH CAROLINA

* UNTIL 1115 PM EDT

* AT 811 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS THAT WERE CONTINUOUSLY REDEVELOPING AND PRODUCING
  FLOODING OVER NORTHWESTERN RICHMOND...SOUTHERN MONTGOMERY AND   
NORTHEASTERN ANSON COUNTIES. DOPPLER RADAR ESTIMATED THAT 3 TO 4 
INCHES OF RAIN HAS FALLEN OVER SOUTHERN MONTGOMERY AND NORTHERN 
RICHMOND COUNTIES.

* LOCATIONS THREATENED WITH FLOODING INCLUDE BISCOE AND ANSONVILLE.

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.

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 3519 8013 3519 8011 3517 8011 3515 8007
      3517 8005 3521 8007 3524 8010 3528 8009
      3539 7973 3530 7971 3527 7971 3521 7966
      3508 7973 3498 8000 3499 8019

$$

ELLIS

2 follow-up statements

062 
WGUS72 KRAH 220144
FFSRAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
944 PM EDT SAT APR 21 2012

NCC007-123-153-220315-
/O.CON.KRAH.FF.W.0002.000000T0000Z-120422T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ANSON NC-MONTGOMERY NC-RICHMOND NC-
944 PM EDT SAT APR 21 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT FOR
NORTHWESTERN RICHMOND...SOUTHERN MONTGOMERY AND NORTHEASTERN ANSON
COUNTIES...

AT 943 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE THUNDERSTORMS THAT WERE REDEVELOPING OVER THE SAME AREA
PRODUCING FLOODING IN NORTHWESTERN RICHMOND...SOUTHERN MONTGOMERY AND
NORTHEASTERN ANSON COUNTIES. DOPPLER RADAR ESTIMATED THAT 3 TO 4 
INCHES OF RAIN HAS FALLEN OVER SOUTHERN MONTGOMERY AND NORTHERN 
RICHMOND COUNTIES.

LOCATIONS THREATENED BY FLOODING INCLUDE BUT ARE NOT LIMITED TO
BISCOE

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.

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.

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 3519 8013 3519 8011 3517 8011 3515 8007
      3517 8005 3521 8007 3524 8010 3528 8009
      3539 7973 3530 7971 3527 7971 3521 7966
      3508 7973 3498 8000 3499 8019

$$

ELLIS

933 
WGUS72 KRAH 220309
FFSRAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
1109 PM EDT SAT APR 21 2012

NCC007-123-153-220317-
/O.EXP.KRAH.FF.W.0002.000000T0000Z-120422T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ANSON NC-MONTGOMERY NC-RICHMOND NC-
1109 PM EDT SAT APR 21 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1115 PM EDT FOR
NORTHWESTERN RICHMOND...SOUTHERN MONTGOMERY AND NORTHEASTERN ANSON
COUNTIES...

HEAVY RAIN HAS ENDED ACROSS THE WARNED AREA AND NO FLOODING WAS 
REPORTED. THUS... THE FLASH FLOOD WARNING WILL BE ALLOW TO EXPIRE AT 
1115 PM.

LAT...LON 3519 8013 3519 8011 3517 8011 3515 8007
      3517 8005 3521 8007 3524 8010 3528 8009
      3539 7973 3530 7971 3527 7971 3521 7966
      3508 7973 3498 8000 3499 8019

$$

77

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 21, 8:03 PM EDT	Areal Flood Advisory	RAH	Montgomery, Richmond	3 hr
Apr 21, 8:37 PM EDT	Special Weather Statement	RAH	Anson	83 min
Apr 21, 8:41 PM EDT	Special Weather Statement	RAH	Anson	79 min
Apr 21, 9:12 PM EDT	Special Weather Statement	RAH	Alamance	63 min
Apr 21, 9:18 PM EDT	Special Weather Statement	RAH	Orange	42 min
Apr 21, 10:31 PM EDT	Areal Flood Advisory	RAH	Durham, Granville, Orange, Vance, Warren	3 hr
Apr 22, 4:48 AM EDT	Special Weather Statement	RAH	Anson, Harnett, Hoke, Lee, Montgomery, Moore and 2 more	117 min
Apr 22, 6:32 AM EDT	Areal Flood Advisory	RAH	Edgecombe, Harnett, Johnston, Nash, Wake, Wilson	3 hr

Nearby

Flash Flood Warnings in North Carolina, 2012 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.