Alert archive / California / Flash Flood Warnings in 1989

Flash Flood Warning 3, NWS Los Angeles, CA

August 9, 1989San Bernardino County, California

NWS Los Angeles, CA issued this flash flood warning at Aug 9, 1989, 5:20 PM PDT for San Bernardino County, California. It was in force for 100 min.

The area

The counties it named.

The facts

Issued
Aug 9, 1989, 5:20 PM PDT (00:20 UTC)
Expired
Aug 9, 1989, 7:00 PM PDT
In force
100 min
Issued by
NWS Los Angeles, CA
Area
Whole counties

County San Bernardino County, CA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 9, 11:41 AM PDT, 5 hours 39 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOS ANGELES CA
1140 AM PDT WED AUG 9 1989

...THUNDERSTORMS DEVELOPING IN SOUTHERN CA MOUNTAINS AND DESERTS...

A SOUTHERLY FLOW ALOFT OF MOIST UNSTABLE AIR CONTINUES OVER THE
SOUTHLAND TODAY...AND WIDELY SCATTERED THUNDERSTORMS ARE BEGINNING
TO DEVELOP IN THE MOUNTAINS AND INTERIOR.

TODAYS THUNDERSTORM ACTIVITY WILL BE ACCOMPANIED BY DEADLY LIGHTNING...
BRIEF HEAVY RAIN...AND GUSTY WINDS.  MINOR FLOODING OF ROADWAYS MAY
ACCOMPANY THE BRIEF HEAVY RAIN...DO NOT ATTEMPT TO CROSS FLOODED
ROADWAYS.  IN ADDITION...LOCAL STRONG GUSTY WINDS MAY PRODUCE BLOWING
DUST TAT MAY BRIEFLY REDUCE VISIBILTIES.

IF YOU ARE IN THE MOUNTAIN OR INTERIOR SECTIONS...KEEP ADVISED OF THE
LATEST ADVISED OF THE LATEST WEATHER INFORMATION.  IT IS POSSIBLE
THAT LOCALIZED FLASH FLOODING WILL DEVELOP ASSOCIATED WITH THE HEAVIER
THUNDERSTORMS THIS AFTERNOON AND EVENING.  STAY CLEAR OF DESERT DRY
WASHES...OR BE P|REPARED TO MOVE TO HIGHER GROUND IF YOU SEE
THUNDERSTORM ACTIVITY NEARBY.

FURTHER STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT.

HAMILTON
Local storm report, Aug 9, 1:56 PM PDT, 3 hours 24 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE LOS ANGELES, CA
1255 PM PST WED AUG 09 1989

 FOLLOWING INFORMATION IS FROM THE SERIES OF THUNDERSTORMS IN
SOUTHERN CALIFORNIA ON AUGUST 8 1989.

THUNDERSTORMS FORMED ALONG THE EAST SIDE OF MANY OF THE MOUNTAIN
RANGES DURING THE AFTERNOON. THE MORE SIGNIFICANT ONES PRODUCED HEAVY
SHOWERS OVER THE HIGHER REACHES OF THE MOUNTAINS WITH LIGHTER AMOUNTS
IN THE VALLEY AREAS.

509PM PDT...INYO COUNTY...10S OF LONE PINE. HEAVY RAINS IN THE MOUNTAINS
            CAUSED MUD TO COVER ALL 4 LANES OF U.S. 395 APPROXIMATELY
            1-1 1/2 FT DEEP. ROAD CLOSED FROM 515PM TO 430AM WED.

706PM PDT...INYO COUNTY...OLANCHA. APPROXIMATELY 1 MILE NORTH AND SOUTH
            OF HIGHWAYS 395/190 JUNCTION. FLOW FROM MOUNTAIN THUNDER/
            STORMS WASHED CONSIDERABLE DEBRIS INTO AQUEDUCT COMPLETELY
            DAMMING IT. WATER AND MUD WAS OVER HIGHWAY JUNCTION AREA.
            1 MILE OF AQUEDUCT COMPLETELY FILLED WITH DEBRIS AND MORE
            THAN 1 MILE WITH VARIOUS AMOUNTS OF DEBRIS. 10-14 DAYS
            ESTIMATED TO CLEAR.

SOME DEBRIS OVER HIGHWAY 168 NEAR DEEP SPRINGS AREA ESE OF BISHOP DUE
TO HEAVY RAINS. LOCAL FLOODING OCCURRED IN THE SHERWOOD CREEK AREA
SW OF BISHOP IN THE LATE AFTERNOON AND EVENING.

IN MONO COUNTY...LOCAL FLOODING 10-15 W OF LEE VINING WHERE HEAVY RAIN
REPORTED FOR 1-2 HOURS. ROCK AND DEBRIS SLIDES NEAR TIOGA PASS WITH
A CAR OFF THE ROAD DURING MORNING OF AUG 8 DUE TO RAINS.

RAINFALL REPORTS...
OAK CREEK        .40            CAINE RANCH               .61
ROUND VALLEY     .10            TINAMAHA...S OF BIG PINE. .08
BENTON           .13            LONE PINE           OVER 1.00
ROCK CREEK       .10            INDEPENDENCE              .18
WILD ROSE        .08            HAIWEE                    .08
STOVEPIPE WELLS  .20            BISHOP                     T
BIG PINE         .21            MAMMOTH LAKES       OVER 1.00
LONG VALLEY      .39

M_CDUFFIE

The office that day

Everything else NWS Los Angeles, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 9, 5:20 PM PDTSevere Thunderstorm WarningLOXSan Bernardino100 min
Aug 9, 7:00 PM PDTFlash Flood WarningLOXRiverside2 hr
Aug 9, 7:00 PM PDTFlash Flood WarningLOXSan Bernardino2 hr
Aug 9, 7:00 PM PDTSevere Thunderstorm WarningLOXSan Bernardino2 hr
Aug 9, 7:00 PM PDTSevere Thunderstorm WarningLOXRiverside2 hr
Aug 9, 8:30 PM PDTFlash Flood WarningLOXRiverside90 min
Aug 9, 8:30 PM PDTSevere Thunderstorm WarningLOXRiverside90 min
Aug 9, 10:00 PM PDTFlash Flood WarningLOXRiverside2 hr
Aug 10, 12:15 AM PDTFlash Flood WarningLOXRiverside105 min

Nearby

Flash Flood Warnings in California, 1989Every flash flood warning in 1989

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.