Alert archive / California / Flash Flood Warnings in 1998
Flash Flood Warning 33, NWS Los Angeles, CA
NWS Los Angeles, CA issued this flash flood warning at May 5, 1998, 7:55 PM PDT for San Luis Obispo County, Santa Barbara County, California. It was in force for 2 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
- May 5, 1998, 7:55 PM PDT (02:55 UTC)
- Expired
- May 5, 1998, 10:00 PM PDT
- In force
- 2 hr
- Issued by
- NWS Los Angeles, CA
- Area
- Whole counties
Counties San Luis Obispo County, CA, Santa Barbara County, CA
The nearest sounding before it
Vandenberg AFB, CA (KVBG), launched 00:00Z, 2.9 hours before the alert went out and 35 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
- 370 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 789 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLAX 060331 FFWLAX CAC083-060330- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE OXNARD CA 830 PM PDT TUE MAY 5 1998 THE NATIONAL WEATHER SERVICE IN OXNARD HAS EXTENDED THE * FLASH FLOOD WARNING FOR... EASTERN LOS ANGELES COUNTY MOUNTAINS AND ADJACENT FOOTHILLS * UNTIL 1000 PM PDT * AT 825 PM...DOPPLER RADARS INDICATED A STRONG LINE OF SHOWERS ACROSS THE EASTERN SAN GABRIEL MOUNTAINS AND ADJACENT FOOTHILL COMMUNITIES. THE LINE OF STORMS WAS MOVING SLOWLY EASTWARD TOWARDS THE LOS ANGELES/SAN BERNARDINO COUNTY LINE. ANOTHER BAND OF SHOWERS IS MOVING INTO THE LOS ANGELES BASIN...AND IS EXPECTED TO INTENSIFY OVER THE FOOTHILL AND MOUNTAIN AREAS AFTER 9 PM. AS A RESULT...THE FLASH FLOOD WARNING HAS BEEN EXTENDED FOR THE ABOVE AREAS UNTIL 10 PM. * BETWEEN 830 PM AND 10 PM...MOUNTAIN AND ADJACENT FOOTHILL AREAS FROM HIGHWAY 39 AND EASTWARD WILL LIKELY EXPERIENCE FLASH FLOODING. AFFECTED COMMUNITIES WILL INCLUDE AZUSA...GLENDORA... AND SAN DIMAS...AS WELL AS THE MORRIS RESERVOIR AREA. EVENING COMMUTES ALONG FOOTHILL BOULEVARD...INTERSTATE 210...AND HIGHWAY 39 WILL LIKELY HAVE FLOODED ROAD CONDITIONS. A FLASH FLOOD WARNING MEANS THHAT FLASH FLOODING IS OCCURRING OR IS IMMINENT. MOVE TO HIGHER GROUND IMMEDIATELY IF FLOODING IS ENCOUNTERED. GOMBERG
The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 5:30 PM PDT | Flash Flood Warning | LOX | San Luis Obispo, Santa Barbara | 90 min |
| May 5, 7:00 PM PDT | Flash Flood Warning | LOX | San Luis Obispo, Santa Barbara | 60 min |
| May 5, 7:20 PM PDT | Flash Flood Warning | LOX | Los Angeles | 70 min |
| May 5, 8:30 PM PDT | Flash Flood Warning | LOX | Los Angeles | 90 min |
| May 5, 9:50 PM PDT | Flash Flood Warning | LOX | San Luis Obispo, Santa Barbara | 2 hr |
| May 5, 9:55 PM PDT | Flash Flood Warning | LOX | Los Angeles | 2 hr |
| May 5, 11:55 PM PDT | Flash Flood Warning | LOX | Los Angeles | 2 hr |
| May 6, 1:55 AM PDT | Flash Flood Warning | LOX | Los Angeles | 2 hr |
Nearby
Flash Flood Warnings in California, 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.