Alert archive / North Carolina / Flash Flood Warnings in 1996

Flash Flood Warning 30, NWS Raleigh, NC

September 10, 1996Chatham County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Sep 10, 1996, 4:51 PM EDT for Chatham 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
Sep 10, 1996, 4:51 PM EDT (20:51 UTC)
Expired
Sep 10, 1996, 8:00 PM EDT
In force
3 hr
Issued by
NWS Raleigh, NC
Area
Whole counties

County Chatham County, NC

The radar

The Raleigh/Durham radar (KRAX), 69 km from the middle of the area, began a volume at 20:52 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 12:00Z, 8.9 hours before the alert went out and 72 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 1996-09-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 681 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 1996-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
681 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
909 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
35 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 102054
FFWRDU
NCC037-110000-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC
451 PM EDT TUE SEP 10 1996
 
THE NATIONAL WEATHER SERVICE IN RALEIGH/DURHAM HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  800 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL NORTH CAROLINA
 
   ...CHATHAM COUNTY
 
DOPPPLER WEATHER RADAR ESTIMATES THAT 2 TO 3 INCHES OF RAIN HAVE FALLEN
IN THE SOUTHERN AND EASTERN PORTIONS OF THE COUNTY WITHIN THE PAST HOUR
OR SO. HEAVY RAINFALL WILL LIKELY CONTINUE FOR THE NEXT HOUR OR TWO.
 
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  STAY ALERT IF YOU ARE IN FLOOD-PRONE AREAS NEAR STREAMS
AND CREEKS.  WATCH FOR RAPIDLY RISING WATER.  BE PREPARED TO ACT
QUICKLY AND MOVE TO HIGHER GROUND IF FLASH FLOODING IS OBSERVED.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 10, 4:05 PM EDTFlash Flood WarningRAHFranklin, Halifax, Warren115 min
Sep 10, 4:05 PM EDTFlash Flood WarningRAHWake115 min
Sep 10, 4:45 PM EDTSevere Thunderstorm WarningRAHNash30 min
Sep 10, 5:03 PM EDTFlash Flood WarningRAHAnson, Stanly117 min
Sep 10, 5:41 PM EDTFlash Flood WarningRAHLee, Moore2 hr
Sep 10, 6:03 PM EDTFlash Flood WarningRAHFranklin, Halifax, Nash, Wake117 min
Sep 10, 6:48 PM EDTFlash Flood WarningRAHWake12 hr
Sep 10, 7:30 PM EDTFlash Flood WarningRAHForsyth2 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; radar from the NEXRAD Level II archive.