Alert archive / North Carolina / Flash Flood Warnings in 1998

Flash Flood Warning 23, NWS Raleigh, NC

April 9, 1998Moore County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Apr 9, 1998, 5:40 AM EDT for Moore County, North Carolina. It was in force for 4 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
Apr 9, 1998, 5:40 AM EDT (09:40 UTC)
Expired
Apr 9, 1998, 9:40 AM EDT
In force
4 hr
Issued by
NWS Raleigh, NC
Area
Whole counties

County Moore County, NC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 9.7 hours before the alert went out and 94 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 1998-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 239 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 00:00Z on 1998-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.1939587897Sfc1 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
239 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1344 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
42 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 090942
FFWRDU
NCC125-091340-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
540 AM EDT THU APR 9 1998

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MOORE COUNTY

* UNTIL 940 AM EDT

* BASIS FOR WARNING:
  NATIONAL WEATHER SERVICE RADAR ESTIMATES THAT UP TO TWO INCHES OF
  RAIN HAS FALLEN IN MOORE COUNTY... PRODUCING FLOODING OF ROADS IN
  NORTHERN SECTIONS OF THE COUNTY.

* SOME AREAS AND STREAMS AFFECTED:
  ROBBINS... DEEP RIVER... LITTLE RIVER

IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. DO NOT DRIVE YOUR
VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.

JBM/GIH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 5:09 AM EDTFlash Flood WarningRAHMontgomery, Stanly4 hr
Apr 9, 1:58 PM EDTSevere Thunderstorm WarningRAHGranville32 min
Apr 9, 2:13 PM EDTSevere Thunderstorm WarningRAHVance32 min
Apr 9, 2:40 PM EDTSevere Thunderstorm WarningRAHHalifax35 min

Nearby

Flash Flood Warnings in North Carolina, 1998Every flash flood warning in 1998

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.