901
FSUS46 KSGX 212309
QPSSGX
QUANTITATIVE PRECIPITATION FORECAST
NATIONAL WEATHER SERVICE SAN DIEGO CA
409 PM PDT TUE APR 21 2026
PRECIPITATION FORECAST IN INCHES IN 6-HOUR PERIODS...
[ BEGINNING TIMES FOR EACH PERIOD ARE IN LOCAL TIME... ]
[ FOR EXAMPLE...05THU ]
[ ...11THU IS A FORECAST FOR 5 AM TO 11 AM THURSDAY ]
[ FOR EXAMPLE...23THU ]
[ ...05FRI IS A FORECAST FOR 11 PM THURSDAY TO 5 AM FRIDAY]
..ORANGE COUNTY COASTAL AREAS
17TUE 23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU
23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU 05FRI
HUNTINGTON BEACH
0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
NEWPORT BEACH
0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
LAGUNA BEACH
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
SAN CLEMENTE
0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
..ORANGE COUNTY INLAND AREAS
17TUE 23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU
23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU 05FRI
ANAHEIM
0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
FULLERTON
0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
BREA
0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
VILLA PARK
0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
..SANTA ANA MOUNTAINS AND FOOTHILLS
17TUE 23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU
23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU 05FRI
FREMONT CANYON
0.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
SILVERADO CANYON, 3 MI EAST OF SILVERADO
0.10 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
MODJESKA PRESERVE
0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
SANTIAGO PEAK
0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
EL CARISO
0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
SANTA ROSA PLATEAU
0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
..SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE
17TUE 23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU
23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU 05FRI
ONTARIO
0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
SAN BERNARDINO
0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
BEAUMONT
0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
RIVERSIDE
0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
PERRIS VALLEY CHANNEL
0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
PRADO DAM
0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
TEMECULA
0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
HEMET
0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
..RIVERSIDE COUNTY MOUNTAINS
17TUE 23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU
23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU 05FRI
IDYLLWILD
0.13 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
..COACHELLA VALLEY
17TUE 23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU
23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU 05FRI
PALM SPRINGS
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
THERMAL
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
..SAN BERNARDINO COUNTY MOUNTAINS
17TUE 23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU
23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU 05FRI
SAN ANTONIO DAM
0.10 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
LYTLE CREEK
0.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
WRIGHTWOOD
0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
LAKE ARROWHEAD
0.23 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
BIG BEAR LAKE
0.07 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
BIG MORONGO CANYON
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
..APPLE AND LUCERNE VALLEYS
17TUE 23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU
23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU 05FRI
HESPERIA
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
VICTORVILLE
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
APPLE VALLEY
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
..SAN DIEGO COUNTY COASTAL AREAS
17TUE 23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU
23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU 05FRI
OCEANSIDE
0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
MIRAMAR
0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
SAN DIEGO INTERNATIONAL AIRPORT
0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
CHULA VISTA
0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
SAN YSIDRO
0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
..SAN DIEGO COUNTY VALLEYS
17TUE 23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU
23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU 05FRI
FALLBROOK
0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
RANCHO BERNARDO
0.01 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
LA MESA
0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
EL CAJON
0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
..SAN DIEGO COUNTY MOUNTAINS
17TUE 23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU
23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU 05FRI
PALOMAR MOUNTAIN
0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
JULIAN
0.09 0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
MOUNT LAGUNA
0.05 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
CAMPO
0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
..SAN DIEGO COUNTY DESERTS
17TUE 23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU
23TUE 05WED 11WED 17WED 23WED 05THU 11THU 17THU 23THU 05FRI
BORREGO SPRINGS
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
A FEW SHOWERS ARE MOVING IN AHEAD OF AN APPROACHING SYSTEM. ONLY
MINIMAL AMOUNTS OF LESS THAN A TENTH OF AN INCH ARE EXPECTED
THROUGH THE REMAINDER OF THIS AFTERNOON WITH THESE SHOWERS, AND
MAINLY FOR THE COASTAL-FACING SLOPES. THE FRONT ASSOCIATED WITH
THIS SYSTEM WILL BRING A CHANCE OF MOSTLY LIGHT SHOWERS FROM THE
COAST TO THE MOUNTAINS THIS EVENING THROUGH MIDNIGHT. RAINFALL
COULD RANGE FROM LITTLE OR NO MEASURABLE RAINFALL NEAR THE COAST
TO AS MUCH AS ONE-TENTH TO ONE-QUARTER IN FOR THE MOUNTAINS OF
SAN BERNARDINO AND RIVERSIDE COUNTIES WITH ONE-TENTH INCH OR LESS
IN THE SAN DIEGO COUNTY MOUNTAINS. THE SNOW LEVEL OF AROUND 8000
TO 8500 THIS AFTERNOON WILL FALL TO 5000 TO 6000 FEET BY TOMORROW
MORNING WITH ONE INCH OR LESS OF SNOWFALL ABOVE 7500 FEET. THERE
COULD BE SLIGHT CHANCES OF RAIN AGAIN BY LATER THIS WEEK AND INTO
THE UPCOMING WEEKEND.
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