Alert archive / California / Flash Flood Warnings in 2000
Flash Flood Warning 2, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Feb 20, 2000, 10:15 PM PST for 4 counties in California. It was in force for 6 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
- Feb 20, 2000, 10:15 PM PST (06:15 UTC)
- Expired
- Feb 21, 2000, 4:00 AM PST
- In force
- 6 hr
- Issued by
- NWS San Diego, CA
- Area
- Whole counties
Counties Orange County, CA, Riverside County, CA, San Bernardino County, CA, San Diego County, CA
The radar
The Santa Ana Mts radar (KSOX), 88 km from the middle of the area, began a volume at 06:17 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, 6.3 hours before the alert went out and 124 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.
- Mixed-layer CAPE
- 104 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 701 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS56 KSGX 210617 FFWSGX CAC059-065-071-073-211200- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN DIEGO CA 1015 PM PST SUN FEB 20 2000 THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING AREAS SOUTHWEST SAN BERNARDINO COUNTY WESTERN RIVERSIDE COUNTY SAN DIEGO COUNTY MOUNTAINS * FLASH FLOOD WARNING FOR ORANGE COUNTY HAS BEEN EXTENDED * UNTIL 400 AM MONDAY PST * AT 1000 PM PST...WEATHER SERVICE DOPPLER RADAR AND ALERT GAUGES INDICATED VERY HEAVY RAIN CONTINUES OVER ORANGE COUNTY AND HAS BEEN INCREASING OVER SOUTHWESTERN SAN BERNARDINO AND WESTERN RIVERSIDE COUNTIES. HEAVY RAIN DEVELOPED AHEAD OF THE MAIN COLD FRONT. THESE SHOWERS WILL DIMIINISH AND MOVE OUT BUT HEAVY RAIN WITH THE COLD FRONT WILL MOVE IN RAPIDLY AND CONTINUE UNTIL ABOUT 400 AM. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN SAN DIEGO. WHITL"OW
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 8:30 PM PST | Flash Flood Warning | SGX | Orange | 2 hr |
| Feb 21, 4:00 AM PST | Flash Flood Warning | SGX | San Diego | 2 hr |
| Feb 21, 1:45 PM PST | Flash Flood Warning | SGX | Orange, Riverside, San Diego | 2 hr |
| Feb 21, 2:05 PM PST | Severe Thunderstorm Warning | SGX | San Diego | 55 min |
| Feb 21, 2:51 PM PST | Severe Thunderstorm Warning | SGX | San Diego | 54 min |
| Feb 21, 3:55 PM PST | Flash Flood Warning | SGX | Riverside, San Diego | 2 hr |
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.