Alert archive / North Carolina / Flash Flood Warnings in 2016

Flash Flood Warning 14, NWS Raleigh, NC

July 16, 2016Wake County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Jul 16, 2016, 9:48 PM EDT for Wake County, North Carolina. It was in force for 3 hr. 7 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
Jul 16, 2016, 9:48 PM EDT (01:48 UTC)
Expired
Jul 17, 2016, 12:45 AM EDT
In force
3 hr
Issued by
NWS Raleigh, NC
Area
Storm-based polygon
Flood severity
None

County Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 37 km from the middle of the area, began a volume at 01:50 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

TimeReportWhereRemark
Jul 16, 10:01 PM EDTFLASH FLOOD1 E Cary, NCPEOPLE BEING RESCUED FROM A FLOODED HOME ON EAST PARK STREET.
Jul 16, 10:07 PM EDTFLASH FLOOD4 Ssw Raleigh, NCROAD CLOSED AT AVENT FERRY ROAD AND TRAILWOOD DRIVE.
Jul 16, 10:12 PM EDTFLASH FLOOD2 Ene Cary, NCWATER RESCUE OF ONE FEMALE AND THREE CHILDREN FROM A MINIVAN ON KING LAWRENCE ROAD BETWEEN BAKER ROAD AND MEDFIELD ROAD.
Jul 16, 10:12 PM EDTFLASH FLOOD3 Ene Cary, NCWATER RESCUE OF ONE FEMALE AND THREE CHILDREN FROM A MINIVAN ON KING LAWRENCE ROAD BETWEEN BAKER ROAD AND MEDFIELD ROAD.
Jul 16, 10:30 PM EDTFLASH FLOOD2 Nw Raleigh, NCMULTIPLE ROAD CLOSURES IN RALEIGH INCLUDING GLENWOOD FROM I-440 TO CREEDMOOR RD... CRABTREE VALLEY AVENUE AND BLUE RIDGE RD... AND MILLBROOK FROM SIX FORKS TO FALLS OF NEUSE.
Jul 16, 10:30 PM EDTFLASH FLOOD3 Nw Raleigh, NCMULTIPLE ROAD CLOSURES IN RALEIGH INCLUDING GLENWOOD FROM I-440 TO CREEDMOOR RD... CRABTREE VALLEY AVENUE AND BLUE RIDGE RD... AND MILLBROOK FROM SIX FORKS TO FALLS OF NEUSE.
Jul 16, 10:55 PM EDTFLASH FLOOD4 Ese Cary, NCWATER RESCUE AT I-440 WESTBOUND AND JONES FRANKLIN RD IN WEST RALEIGH.

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, 1.8 hours before the alert went out and 108 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, Greensboro/Hi Pt, NC at 00:00Z on 2016-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 258 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, Greensboro/Hi Pt, NC at 00:00Z on 2016-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.193958Sfc1 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
258 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
1119 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

459 
WGUS52 KRAH 170148
FFWRAH
NCC183-170445-
/O.NEW.KRAH.FF.W.0014.160717T0148Z-160717T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
948 PM EDT SAT JUL 16 2016

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL WAKE COUNTY IN CENTRAL NORTH CAROLINA...

* UNTIL 1245 AM EDT

* AT 946 PM EDT...THE TRAINING THUNDERSTORMS WERE PRODUCING VERY
  HEAVY RAIN FROM CARY TO RALEIGH... MOVING EAST AT 15 MPH. THIS IS
  A VERY DANGEROUS FLOODING SITUATION WITH WATER RESCUES ONGOING IN
  WEST RALEIGH AND CARY. ABSOLUTELY DO NOT DRIVE IN THE WARNING AREA.
  ADDITIONAL 2 INCHES OF RAIN IS POSSIBLE BEFORE THE RAIN ENDS AND
  UP TO 5 INCHES HAS BEEN REPORTED IN CARY. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  RALEIGH...CARY...WAKE FOREST...RDU INTERNATIONAL...APEX...
  MORRISVILLE...ROLESVILLE...FALLS LAKE STATE REC AREA...
  PURNELL AND FALLS LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...


LIFE THREATENING FLASH FLOODING IS OCCURRING ACROSS THE AREA. DO NOT
ATTEMPT TO TRAVEL UNLESS YOU MUST DO SO TO ESCAPE THE FLOODING OR
ARE UNDER AN EVACUATION ORDER. IF YOU ARE IN A LOW LYING
AREA...ALONG A CREEK OR STREAM...OR IN AN AREA EXPERIENCING
FLOODING...TAKE ACTION NOW TO PROTECT YOUR LIFE. MOVE TO HIGHER
GROUND IMMEDIATELY.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 3599 7846 3582 7844 3566 7897 3587 7891
      3587 7883 3592 7881 3592 7876 3597 7871
      3601 7870 3603 7872 3603 7875 3607 7875
      3608 7869

$$

PWB

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 8:38 PM EDTSevere Thunderstorm WarningRAHChatham, Durham, Wake52 min
Jul 16, 8:42 PM EDTSevere Thunderstorm WarningRAHCumberland, Harnett, Hoke, Moore, Scotland64 min
Jul 16, 9:02 PM EDTSpecial Weather StatementRAHFranklin43 min
Jul 16, 9:08 PM EDTAreal Flood AdvisoryRAHFranklin112 min
Jul 16, 9:19 PM EDTFlash Flood WarningRAHChatham, Durham, Orange2 hr
Jul 16, 9:56 PM EDTSevere Thunderstorm WarningRAHCumberland, Harnett, Johnston, Sampson, Wayne64 min
Jul 16, 10:14 PM EDTFlash Flood Warning EmergencyRAHDurham, Wake3 hr
Jul 16, 10:37 PM EDTSpecial Weather StatementRAHEdgecombe, Nash, Wilson23 min
Jul 16, 10:49 PM EDTAreal Flood AdvisoryRAHEdgecombe, Franklin, Johnston, Nash, Wayne, Wilson3 hr
Jul 16, 11:29 PM EDTSpecial Weather StatementRAHEdgecombe, Wilson76 min
Jul 16, 11:58 PM EDTAreal Flood WarningRAHEdgecombe, Nash, Wilson9 hr
Jul 17, 12:19 AM EDTAreal Flood WarningRAHChatham, Durham, Franklin, Harnett, Johnston, Orange and 1 more9 hr
Jul 17, 1:09 AM EDTSpecial Weather StatementRAHCumberland, Hoke, Sampson, Scotland81 min
Jul 17, 8:45 AM EDTAreal Flood WarningRAHEdgecombe9 hr
Jul 17, 9:12 AM EDTAreal Flood WarningRAHWake3 hr
Jul 17, 9:40 AM EDTRiver Flood WarningRAHJohnston26 hr
Jul 17, 4:19 PM EDTRiver Flood WarningRAHJohnston55 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.