Alert archive / North Carolina / Flash Flood Warnings in 2016

Flash Flood Warning 23, NWS Raleigh, NC

August 7, 2016Harnett County, Johnston County, Wayne County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Aug 7, 2016, 2:48 PM EDT for Harnett County, Johnston County, Wayne 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
Aug 7, 2016, 2:48 PM EDT (18:48 UTC)
Expired
Aug 7, 2016, 5:45 PM EDT
In force
3 hr
Issued by
NWS Raleigh, NC
Area
Storm-based polygon
Flood severity
None

Counties Harnett County, NC, Johnston County, NC, Wayne County, NC

The radar

The Raleigh/Durham radar (KRAX), 36 km from the middle of the area, began a volume at 18:51 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

Newport, NC (KMHX), launched 12:00Z, 6.8 hours before the alert went out and 142 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-pSkew-T log-p diagram, Newport, NC at 12:00Z on 2016-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1811 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Newport, NC at 12:00Z on 2016-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1811 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
717 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

411 
WGUS52 KRAH 071848
FFWRAH
NCC085-101-191-072145-
/O.NEW.KRAH.FF.W.0023.160807T1848Z-160807T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
248 PM EDT SUN AUG 7 2016

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL HARNETT COUNTY IN CENTRAL NORTH CAROLINA...
  WAYNE COUNTY IN CENTRAL NORTH CAROLINA...
  JOHNSTON COUNTY IN CENTRAL NORTH CAROLINA...

* UNTIL 545 PM EDT
  
* AT 247 PM EDT...DOPPLER RADAR INDICATED A SLOW MOVING THUNDERSTORM
  PRODUCING FLOODING ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN
  HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE OVER
THE NEXT COUPLE OF HOURS IN THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

EXCESSIVE RUNOFF FROM THE HEAVY RAIN WILL CAUSE FLASH FLOODING OF
CREEKS AND STREAMS...ROADS...LOW LYING AND POOR DRAINAGE AREAS. DO
NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. MANY
ROADS AND INTERSECTIONS IN THE AREA WILL QUICKLY FLOOD. WHEN
ENCOUNTERING FLOODED ROADS...TURN AROUND...DONT DROWN.

&&

LAT...LON 3534 7782 3518 7783 3515 7790 3519 7802
      3519 7816 3529 7830 3526 7848 3532 7854
      3528 7859 3541 7908 3558 7891 3552 7871
      3571 7847 3573 7840 3568 7816 3561 7813
      3559 7808 3559 7782 3543 7783 3538 7780

$$

23
2 follow-up statements
426 
WGUS72 KRAH 071953
FFSRAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
353 PM EDT SUN AUG 7 2016

NCC085-101-191-072145-
/O.CON.KRAH.FF.W.0023.000000T0000Z-160807T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HARNETT NC-WAYNE NC-JOHNSTON NC-
353 PM EDT SUN AUG 7 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM EDT FOR
EAST CENTRAL HARNETT...WAYNE AND SOUTHERN JOHNSTON COUNTIES...

AT 352 PM EDT...DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS
PRODUCING FLOODING OVER THE WARNED AREA. UP TO TWO INCHES OF RAIN
HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

ADDITIONAL RAINFALL AMOUNTS UP TO AN INCH ARE POSSIBLE IN THE WARNED
AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THE HEAVY RAIN WILL CAUSE FLASH FLOODING OF
CREEKS AND STREAMS...ROADS...LOW LYING AND POOR DRAINAGE AREAS. DO
NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. MANY
ROADS AND INTERSECTIONS IN THE AREA WILL QUICKLY FLOOD. WHEN
ENCOUNTERING FLOODED ROADS...TURN AROUND...DONT DROWN.

&&

LAT...LON 3534 7782 3518 7783 3515 7790 3519 7802
      3519 7816 3529 7830 3526 7848 3532 7854
      3528 7859 3537 7894 3544 7886 3546 7862
      3548 7841 3555 7830 3561 7819 3561 7813
      3559 7808 3559 7782 3543 7783 3538 7780

$$

23
955 
WGUS72 KRAH 072024
FFSRAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
424 PM EDT SUN AUG 7 2016

NCC085-101-191-072034-
/O.CAN.KRAH.FF.W.0023.000000T0000Z-160807T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HARNETT NC-WAYNE NC-JOHNSTON NC-
424 PM EDT SUN AUG 7 2016

...THE FLASH FLOOD WARNING FOR EAST CENTRAL HARNETT...WAYNE AND
SOUTHERN JOHNSTON COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3534 7782 3518 7783 3515 7790 3519 7802
      3519 7816 3529 7830 3526 7848 3532 7854
      3528 7859 3537 7894 3544 7886 3546 7862
      3548 7841 3555 7830 3561 7819 3561 7813
      3559 7808 3559 7782 3543 7783 3538 7780

$$

23

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 12:45 AM EDTSpecial Weather StatementRAHAlamance, Guilford, Person75 min
Aug 7, 1:53 AM EDTSpecial Weather StatementRAHGuilford67 min
Aug 7, 2:29 AM EDTAreal Flood AdvisoryRAHGuilford2 hr
Aug 7, 12:15 PM EDTSpecial Weather StatementRAHStanly45 min
Aug 7, 12:33 PM EDTSpecial Weather StatementRAHStanly42 min
Aug 7, 12:53 PM EDTAreal Flood AdvisoryRAHStanly3 hr
Aug 7, 1:08 PM EDTFlash Flood WarningRAHStanly3 hr
Aug 7, 1:12 PM EDTAreal Flood AdvisoryRAHChatham, Durham, Orange, Wake3 hr
Aug 7, 1:26 PM EDTFlash Flood WarningRAHChatham, Durham, Wake3 hr
Aug 7, 1:53 PM EDTAreal Flood AdvisoryRAHJohnston, Wayne3 hr
Aug 7, 4:09 PM EDTAreal Flood AdvisoryRAHMoore2 hr
Aug 7, 4:49 PM EDTSpecial Weather StatementRAHCumberland, Hoke, Sampson41 min
Aug 7, 5:04 PM EDTSpecial Weather StatementRAHChatham41 min
Aug 7, 5:05 PM EDTAreal Flood AdvisoryRAHCumberland, Hoke, Sampson115 min
Aug 7, 5:11 PM EDTSpecial Weather StatementRAHAnson, Richmond, Scotland79 min
Aug 7, 5:18 PM EDTFlash Flood WarningRAHCumberland117 min
Aug 7, 5:33 PM EDTFlash Flood WarningRAHHoke3 hr

Nearby

Flash Flood Warnings in North Carolina, 2016Every flash flood warning in 2016

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.