Alert archive / North Carolina / Flash Flood Warnings in 2003

Flash Flood Warning 76, NWS Raleigh, NC

August 10, 2003Montgomery County, Randolph County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Aug 10, 2003, 2:15 AM EDT for Montgomery County, Randolph 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 counties it named.

The facts

Issued
Aug 10, 2003, 2:15 AM EDT (06:15 UTC)
Expired
Aug 10, 2003, 5:00 AM EDT
In force
3 hr
Issued by
NWS Raleigh, NC
Area
Whole counties

Counties Montgomery County, NC, Randolph County, NC

The radar

The Raleigh/Durham radar (KRAX), 124 km from the middle of the area, began a volume at 06:16 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, 6.3 hours before the alert went out and 62 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 2003-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1581 joules per kilogram.LCLEL10008507005003002001001 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 2003-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.19395878Sfc1 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
1581 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
934 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KRAH 100621
FFWRAH
NCC123-151-100900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
215 AM EDT SUN AUG 10 2003

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS EXTENDED A

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

* UNTIL 500 AM EDT

* AT 215 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAIN OVER RANDOLPH AND MONTGOMERY
  COUNTIES.

* THUNDERSTORMS WERE STILL ONGOING ACROSS MONTGOMERY COUNTY FROM     
  BADIN LAKE EAST THROUGH TROY TO STAR AND BISCOE. THESE STORMS WERE 
  STILL DROPPING HEAVY RAIN IN AREAS THAT WERE REPORTING FLOODING. 
  LOCATIONS AFFECTED INCLUDE...
  TROY.
  STEEDS.
  STAR.
  SEAGROVE.
  ELDORADO.
  BISCOE.
  BADIN LAKE.
  ASHEBORO.

RADAR INDICATES THAT STORM TOTAL RAINFALL SINCE LATE SATURDAY 
EVENING OVER MONTGOMERY AND RANDOLPH COUNTIES RANGED FROM 3 TO 
LOCALLY 6 INCHES. THIS HAS PRODUCED FLASH FLOODING ESPECIALLY 
IN AN AREA EXTENDING FROM NC 24 NORTHEAST TO NC 109... JUST
WEST OF TROY... NORTHEAST TO ULAH AND ASHEBORO. ONGOING STORMS
OVER MONTGOMERY COUNTY TO NEAR SEAGROVE IN RANDOLPH COUNTY
WILL CREATE ADDITIONAL FLASH FLOODING. 

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE EXPERIENCING FLOODING OR LIVE IN A FLOOD PRONE AREA MOVE 
TO HIGHER GROUND IMMEDIATELY. DO NOT DRIVE INTO FLOODED ROADS. 

$$

PWB
1 follow-up statement
000 
WGUS72 KRAH 100649
FFSRAH
NCC123-151-100830-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
247 AM EDT SUN AUG 10 2003

...A FLASH FLOOD WARNING CONTINUES IN EFFECT FOR RANDOLPH AND 
MONTGOMERY COUNTIES THROUGH 500 AM...

AT 245 AM EDT DOPPLER RADAR INDICATED THAT THUNDERSTORMS CONTINUED
FROM JUST EAST OF BADIN LAKE EAST TO NEAR SEAGROVE AND COLERIDGE...
ACROSS NORTHERN MONTGOMERY AND INTO SOUTHEAST RANDOLPH COUNTIES. 
RAINFALL HAS ALREADY TOTALED FROM 3 TO AS MUCH AS 6 INCHES FROM NEAR 
TROY TO NEAR ASHEBORO. 

COUNTY OFFICIALS AND TRIAD SKYWARN SPOTTERS INDICATED AT 240 AM... 
THAT FLASH FLOODING HAD WASHED AWAY THE PISGAH COVERED BRIDGE IN 
SOUTHERN RANDOLPH COUNTY... JUST WEST OF SEAGROVE. MANY ROADS WERE 
FLOODED AND IMPASSABLE. THE HARDEST HIT LOCATIONS WERE IN SOUTH 
CENTRAL RANDOLPH COUNTY IN THE LITTLE RIVER BASIN. 

AREAS EXPERIENCING SEVERE FLOODING INCLUDED... HIGH PINES CHURCH 
ROAD... PANTHER MOUNTAIN TO LANIER ROAD... LANIER ROAD TO PISGAH 
ROAD... BERNIE ROAD TO HIGHWAY 134. THERE WERE SEVERAL BRIDGES UNDER 
WATER. 

THE LITTLE RIVER WILL LIKELY EXPERIENCE MAJOR FLOODING DUE THE 
EXPECTED RUNOFF FROM THIS BASIN. THE AREAS AFFECTED WILL BE ALONG
THE LITTLE RIVER FROM PISGAH COVERED BRIDGE ROAD... NEAR 220 BYPASS 
IN RANDOLPH COUNTY... DOWNSTREAM INTO MONTGOMERY COUNTY AROUND TROY. 

DO NOT ATTEMPT TO DRIVE THROUGH ANY WATER. FLASH FLOODING IS 
OCCURRING SO ACT QUICKLY TO MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD 
WATERS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO 
RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS.  
$$

PWB

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 8:16 PM EDTFlash Flood WarningRAHOrange119 min
Aug 9, 9:42 PM EDTFlash Flood WarningRAHDurham93 min
Aug 9, 9:56 PM EDTFlash Flood WarningRAHDavidson94 min
Aug 10, 12:17 AM EDTFlash Flood WarningRAHRandolph118 min
Aug 10, 12:35 AM EDTFlash Flood WarningRAHMontgomery100 min
Aug 10, 11:50 AM EDTFlash Flood WarningRAHWake115 min
Aug 10, 5:33 PM EDTFlash Flood WarningRAHMoore87 min
Aug 10, 5:43 PM EDTFlash Flood WarningRAHHarnett2 hr

Nearby

Flash Flood Warnings in North Carolina, 2003Every flash flood warning in 2003

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.