Alert archive / California / Flash Flood Warnings in 2000

Flash Flood Warning 10, NWS San Diego, CA

March 3, 2000Orange County, California

NWS San Diego, CA issued this flash flood warning at Mar 3, 2000, 8:24 PM PST for Orange County, California. It was in force for 96 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Mar 3, 2000, 8:24 PM PST (04:24 UTC)
Expired
Mar 3, 2000, 10:00 PM PST
In force
96 min
Issued by
NWS San Diego, CA
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Orange County, CA

The radar

The Santa Ana Mts radar (KSOX), 14 km from the middle of the area, began a volume at 04:24 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

San Diego, CA (KNKX), launched 00:00Z, 4.4 hours before the alert went out and 108 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, San Diego, CA at 00:00Z on 2000-03-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 44 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, San Diego, CA at 00:00Z on 2000-03-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 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
44 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
713 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
175 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 
WGUS56 KSGX 040435 COR
FFWSAN
CAC059-040600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTED
NATIONAL WEATHER SERVICE SAN DIEGO CA
824 PM PST FRI MAR 3 2000

...CORRECTED THIRD PARAGRAPH...

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A

* FLASH FLOOD WARNING FOR EASTERN ORANGE COUNTY...
  
  THIS INCLUDES THE CITIES OF...ANAHEIM...BREA...EL TORO...          
  FULLERTON...ORANGE...PLACENTIA...TUSTIN...TUSTIN FOOTHILLS...YORBA 
  LINDA AND THE ORANGE COUNTY MOUNTAINS AND CANYONS.

* UNTIL 1000 PM PST

* AT 820 PM PST...THE PUBLIC REPORTED VERY HEAVY RAIN IN THE         
  ORANGE COUNTY MOUNTAINS NEAR TRABUCO CANYON. THE GROUND IN THIS    
  AREA IS ALREADY SATURATED FROM HEAVY RAINS EARLIER THIS EVENING.   
  MUDSLIDES ARE ALSO POSSIBLE. THE STORM WAS MOVING NORTHWEST AT 30  
  MPH TOWARD BREA AND YORBA LINDA.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE 
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS 
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY 
AUTOMOBILE. 

MOEDE

LAT...LON 3347 11751 3366 11741 3398 11780 3388 11803

Nearby

Flash Flood Warnings in California, 2000Every flash flood warning in 2000

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.