Alert archive / North Carolina / Flash Flood Warnings in 1996

Flash Flood Warning 37, NWS Raleigh, NC

September 11, 1996Wake County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Sep 11, 1996, 7:31 PM EDT for Wake County, North Carolina. It was in force for 119 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 11, 1996, 7:31 PM EDT (23:31 UTC)
Expired
Sep 11, 1996, 9:30 PM EDT
In force
119 min
Issued by
NWS Raleigh, NC
Area
Whole counties

County Wake County, NC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.5 hours before the alert went out and 117 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 12:00Z on 1996-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 236 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 1996-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 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
236 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
580 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
43 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.

000 
TTAA00 KRDU 112333
FFWRDU
NCC183-120130-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC
731 PM EDT WED SEP 11 1996
 
THE NATIONAL WEATHER SERVICE IN RALEIGH/DURHAM HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  930 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL NORTH CAROLINA
 
   ...NORTHERN WAKE COUNTY
 
AT 725 PM NATIONAL WEATHER SERVICE RADAR SHOWED A CLUSTER OF VERY SLOW
MOVING THUNDERSTORMS OVER THE CITY OF RALEIGH AND NORTHERN WAKE COUNTY.
 
THE STORMS WERE CAUSING VERY HEAVY RAIN RESULTING IN THE FLODDING OF
SOME CITY STREETS IN RALEIGH AND POSSIBLY FLOODING ALONG SMALL STREAMS
IN NORTHERN WAKE COUNTY.
 
THE STORMS WERE MOVING VERY SLOWING TO THE NORTHEAST AND WILL CONTINUE
TO DUMP HEAVY RAIN OVER RALEIGH AND NORTHERN WAKE COUNTY THROUGH 830
PM.
 
INTERESTS ALONG CRABTREE CREEK SHOULD MONITOR WATER LEVELS CAREFULLY.
THE GAUGE AT WAKE FOREST ROAD SHOWED CRABTREE AT 10.2 8FT AND
RISING...FLOOD STAGE IS 13 FT...AFLASH FLOOD WARNING MAY BE NEEDED
FOR CRABTREE CREEK.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Sep 11, 7:17 PM EDT, 14 minutes before
NCZ026-041-120100-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
708 PM EDT WED SEP 11 1996

AT 710 PM NATIONAL WEATHER SERIVE RADAR INDICATED A CLUSTER OF SLOW
MOVING THUNDERSTORMS OVER THE CITY OF RALEIGH. HEAVY RAIN FROM THESE
STORMS WAS CAUSING WATER TO POND ON CITY STRRETS.

THE CITY OF RALEIGH REPORTS WATER CURB DEEP ON MILLBROOK AND TOWN AND
COUNTRY ROADS CLOSING 2 OF THE 4 LANES OF TRAFFIC.

OTHER ROADS MAY EXPERIENCE PON,DING AND FLOODING THROUGH 8 PM AS THE
STORMS SLOWLY MOVE TOWARDS THE NORTHEAST.

A FLASH FLOOD WATCH CONTINUES IN EFFECT FOR THE RALEIGH AREA TONIGHT.

REPORT FLOODING TO LAE ENFORCEMENT FO RELAY TO THE NATIONAL WEATHER
SERVICE.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 10, 8:04 PM EDTFlash Flood WarningRAHNash, Wake4 hr

Nearby

Flash Flood Warnings in North Carolina, 1996Every flash flood warning in 1996

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.