Alert archive / California / Flash Flood Warnings in 1990
Flash Flood Warning 5, NWS Los Angeles, CA
NWS Los Angeles, CA issued this flash flood warning at Jul 14, 1990, 1:00 AM PDT for Riverside County, California. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jul 14, 1990, 1:00 AM PDT (08:00 UTC)
- Expired
- Jul 14, 1990, 3:00 AM PDT
- In force
- 2 hr
- Issued by
- NWS Los Angeles, CA
- Area
- Whole counties
County Riverside County, CA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
San Diego, CA (KNKX), launched 00:00Z, 8.0 hours before the alert went out and 154 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2692 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 96 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 140802
FFWLAX
CAC071-065-141000-
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LOS ANGELES CA
1 AM PDT SAT JUL 14 1990
THE NATIONAL WEATHER SERVICE IN LOS ANGELES HAS ISSUED A SEVERE
THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 3 AM PDT
SATURDAY MORNING FOR PEOPLE IN THE FOLLOWING LOCATIONS.
IN SOUTH CALIFORNIA
...EASTERN SAN BERNARDINO COUNTY
...EASTERN RIVERSIDE COUNTY
THE WARNING INCLUDES THE COMMUNITES OF...
NEEDLES
THE WEST SHORE OF LAKE HAVASU
EARP
BIG RIVER
BLYTHE
VIDAL JUNCTION
ESSEX
RICE
MIDLAND
AND PORTIONS OF
INTERSTATE 40
INTERSTATE 10
STATE HIGHWAY 95
STATE HIGHWAY 62
A SEVERE THUNDERSTORM WARNING TELLS YOU THAT IF THREATENING WEATHER
APPROACHES...GO TO A SAFE PLACE IMMEDIATELY.
A FLASH FLOOD WARNING TELLS YOU TO AVOID AREAS IN AND BELOW CANYONS
...AND NOT TO ATTEMPT TO DRIVE OVER INUNDATED ROADS. IF YOU ARE ON
FOOT NEAR A STREAM OR WASH...HEAD FOR HIGHER GROUND.
THIS STORM HAS A HISTORY OF PRODUCING FLASH FLOODS...CARRYING AWAY
VEHICLES WITH WATER RUNNING 4 TO 5 FEET DEEP IN SPOTS...AND CLOSING
ROADS. ALSO...WIND GUSTS TO 71 MILES AN HOUR HAVE BEEN REPORTED.
THIS IS A DANGEROUS STORM. STAY INFORMED AND BE PREPARED TO TAKE QUICK
ACTION. STATEMENTS WILL BE ISSUED AT LEAST HOURLY DURING THIS WEATHER
EMERGENCY.
GREBEThe office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 9:36 PM PDT | Flash Flood Warning | LOX | San Bernardino | 3 hr |
| Jul 13, 9:36 PM PDT | Severe Thunderstorm Warning | LOX | San Bernardino | 3 hr |
| Jul 13, 11:05 PM PDT | Flash Flood Warning | LOX | San Bernardino | 115 min |
| Jul 13, 11:05 PM PDT | Flash Flood Warning | LOX | Riverside | 115 min |
| Jul 13, 11:05 PM PDT | Severe Thunderstorm Warning | LOX | San Bernardino | 115 min |
| Jul 13, 11:05 PM PDT | Severe Thunderstorm Warning | LOX | Riverside | 115 min |
| Jul 14, 1:00 AM PDT | Flash Flood Warning | LOX | San Bernardino | 2 hr |
| Jul 14, 1:00 AM PDT | Severe Thunderstorm Warning | LOX | Riverside | 2 hr |
| Jul 14, 1:00 AM PDT | Severe Thunderstorm Warning | LOX | San Bernardino | 2 hr |
Nearby
Flash Flood Warnings in California, 1990Every flash flood warning in 1990
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.