Alert archive / North Carolina / Flash Flood Warnings in 1998

Flash Flood Warning 13, NWS Raleigh, NC

March 19, 1998Orange County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Mar 19, 1998, 4:06 AM EST for Orange 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
Mar 19, 1998, 4:06 AM EST (09:06 UTC)
Expired
Mar 19, 1998, 7:00 AM EST
In force
3 hr
Issued by
NWS Raleigh, NC
Area
Whole counties

County Orange County, NC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 9.1 hours before the alert went out and 70 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 1998-03-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1998-03-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
540 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
270 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 190906
FFWRDU
NCC063-135-183-191200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
406 AM EST THU MAR 19 1998


THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* FLASH FLOOD WARNING FOR
  DURHAM COUNTY
  ORANGE COUNTY
  WAKE COUNTY

* UNTIL 700 AM EST

* THIS INCLUDES THE CITIES OF RALEIGH...DURHAM...CHAPEL HILL... AND
HILLSBOROUGH.

* A LARGE AREA OF MODERATE TO HEAVY RAIN IS MOVING INTO THE AREA
FROM THE SOUTH.  RAINFALL RATES OF FOUR-TENTHS TO SEVEN-TENTHS OF
AN INCH PER HOUR ARE INDICATED BY WEATHER RADAR.  WITH RAINFALL
PERSISTING AT THIS RATE UNTIL DAYBREAK AND COMING ATOP SATURATED
GROUNDS FROM YESTERDAY'S RAIN...FLASH FLOODING IS LIKELY.


PEOPLE IN FLOOD PRONE AREAS OF ORANGE...DURHAM...AND WAKE COUNTIES
SHOULD MONITOR FLOOD CONDITIONS...AND BE PREPARED TO MOVE TO HIGHER
GROUND...SHOULD FLOODWATERS THREATEN.

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

VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR THE LATEST
UPDATES CONCERNING THIS DEVELOPING WEATHER SITUATION.

RFG

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 19, 2:00 AM ESTFlash Flood WarningRAHMontgomery3 hr
Mar 19, 3:02 AM ESTFlash Flood WarningRAHChatham, Moore, Randolph3 hr
Mar 19, 4:06 AM ESTFlash Flood WarningRAHDurham, Wake3 hr
Mar 19, 6:46 AM ESTFlash Flood WarningRAHWake3 hr
Mar 19, 7:06 AM ESTFlash Flood WarningRAHDurham, Orange3 hr
Mar 19, 7:06 AM ESTFlash Flood WarningRAHGranville, Vance3 hr
Mar 19, 8:08 AM ESTFlash Flood WarningRAHWarren2 hr
Mar 19, 10:37 AM ESTFlash Flood WarningRAHWake3 hr
Mar 19, 5:31 PM ESTFlash Flood WarningRAHMoore6 hr

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.