892
FSUS46 KSGX 211043
QPSSGX
QUANTITATIVE PRECIPITATION FORECAST
NATIONAL WEATHER SERVICE SAN DIEGO CA
243 AM PST SUN DEC 21 2025
PRECIPITATION FORECAST IN INCHES IN 6-HOUR PERIODS...
[ BEGINNING TIMES FOR EACH PERIOD ARE IN LOCAL TIME... ]
[ FOR EXAMPLE...04THU ]
[ ...10THU IS A FORECAST FOR 4 AM TO 10 AM THURSDAY ]
[ FOR EXAMPLE...22THU ]
[ ...04FRI IS A FORECAST FOR 10 PM THURSDAY TO 4 AM FRIDAY]
..ORANGE COUNTY COASTAL AREAS
04SUN 10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE 04WED
HUNTINGTON BEACH
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.22 0.40
NEWPORT BEACH
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.17 0.31
LAGUNA BEACH
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.15 0.28
SAN CLEMENTE
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.24
..ORANGE COUNTY INLAND AREAS
04SUN 10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE 04WED
ANAHEIM
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.21 0.37
FULLERTON
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.25 0.43
BREA
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.26 0.45
VILLA PARK
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.21 0.36
..SANTA ANA MOUNTAINS AND FOOTHILLS
04SUN 10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE 04WED
FREMONT CANYON
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.18 0.32
SILVERADO CANYON, 3 MI EAST OF SILVERADO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.23 0.38
MODJESKA PRESERVE
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.21 0.34
SANTIAGO PEAK
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.24 0.39
EL CARISO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.13 0.24
SANTA ROSA PLATEAU
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.10 0.24
..SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE
04SUN 10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE 04WED
ONTARIO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.12 0.32
SAN BERNARDINO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.08 0.22
BEAUMONT
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.20
RIVERSIDE
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.21
PERRIS VALLEY CHANNEL
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.16
PRADO DAM
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.13 0.28
TEMECULA
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.18
HEMET
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.15
..RIVERSIDE COUNTY MOUNTAINS
04SUN 10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE 04WED
IDYLLWILD
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.22
..COACHELLA VALLEY
04SUN 10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE 04WED
PALM SPRINGS
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.05
THERMAL
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.01
..SAN BERNARDINO COUNTY MOUNTAINS
04SUN 10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE 04WED
SAN ANTONIO DAM
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.25 0.69
LYTLE CREEK
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.22 0.66
WRIGHTWOOD
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.11 0.46
LAKE ARROWHEAD
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.50
BIG BEAR LAKE
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.18
BIG MORONGO CANYON
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.11
..APPLE AND LUCERNE VALLEYS
04SUN 10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE 04WED
HESPERIA
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.18
VICTORVILLE
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.20
APPLE VALLEY
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.17
..SAN DIEGO COUNTY COASTAL AREAS
04SUN 10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE 04WED
OCEANSIDE
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.09 0.16
MIRAMAR
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.08 0.10
SAN DIEGO INTERNATIONAL AIRPORT
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.10
CHULA VISTA
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.07
SAN YSIDRO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.07
..SAN DIEGO COUNTY VALLEYS
04SUN 10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE 04WED
FALLBROOK
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.08 0.17
RANCHO BERNARDO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.10
LA MESA
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.07
EL CAJON
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.07
..SAN DIEGO COUNTY MOUNTAINS
04SUN 10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE 04WED
PALOMAR MOUNTAIN
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.19
JULIAN
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.10
MOUNT LAGUNA
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.07
CAMPO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.06
..SAN DIEGO COUNTY DESERTS
04SUN 10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
10SUN 16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE 04WED
BORREGO SPRINGS
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.03
DRY WEATHER CONTINUES THROUGH TUESDAY MORNING. A LOW PRESSURE
SYSTEM AND ASSOCIATED ATMOSPHERIC RIVER BRINGS INCREASING CHANCES
FOR WIDESPREAD HEAVY RAINFALL EARLY WEDNESDAY INTO THURSDAY.
TIMING FOR HEAVIEST RAINFALL IS CURRENTLY WEDNESDAY MORNING
THROUGH WEDNESDAY EVENING, SLIGHTLY LATER THAN PREVIOUSLY
FORECAST. STRONG SOUTH WINDS WILL FAVOR THE COASTAL SLOPES OF THE
SAN BERNARDINO AND EASTERN SAN GABRIEL MOUNTAINS, GENERALLY FROM
THE CAJON PASS WESTWARD.
FOR THE SAN BERNARDINO/SAN GABRIEL MOUNTAINS 4 AM TUE THROUGH 4 AM
FRIDAY, PROBABILITIES OF RAINFALL TOTALS OF 5 INCHES OR MORE ARE
AS FOLLOWS:
- CAJON PASS WESTWARD: 75-85%
- EAST OF CAJON PASS: 35-65%
PROBABILITIES OF 8 INCHES OR MORE:
- CAJON PASS WESTWARD: 45-55%
- EAST OF CAJON PASS: 10-20%
PROBABILITIES OF 10 INCHES OR MORE:
- CAJON PASS WESTWARD: 10-20%
- EAST OF CAJON PASS: 5% OR LESS
FOR REMAINING AREAS 4 AM TUE THROUGH 4 AM FRIDAY, PROBABILITIES OF
RAINFALL TOTALS 2 INCHES OR MORE:
- ORANGE COUNTY/SANTA ANA MOUNTAINS: 85-95%
- INLAND EMPIRE: 50-90%, HIGHEST WEST
- RIVERSIDE/SAN DIEGO COUNTY MOUNTAINS: 60-80%
- SAN DIEGO COUNTY COAST/VALLEYS: 40-75%, HIGHEST NORTHWEST
- DESERTS: 10-15% (LOWER DESERTS), 25-45% (HIGH DESERT)
PROBABILITIES OF 3 INCHES OR MORE:
- ORANGE COUNTY/SANTA ANA MOUNTAINS: 65-80%
- INLAND EMPIRE: 30-75%, HIGHEST WEST
- RIVERSIDE/SAN DIEGO COUNTY MOUNTAINS: 40-60%
- SAN DIEGO COUNTY COAST/VALLEYS: 10-50%, HIGHEST NORTHWEST
- DESERTS: 5-10% (LOWER DESERTS), 10-20% CHANCE (HIGH DESERT)
MOST OF THE PRECIPITATION ACROSS SOUTHWESTERN CALIFORNIA THROUGH
CHRISTMAS MORNING IS EXPECTED TO FALL AS RAIN WITH SNOW LEVELS
REMAINING ABOVE 7500-8000 FEET. SNOW LEVELS COULD DROP EVEN LOWER
FOR FRIDAY AND SATURDAY, BUT CONFIDENCE IN SNOW LEVELS IS LOW AS
THE SPREAD BETWEEN THE NBM 25TH AND 75TH PERCENTILE SNOW LEVEL IS
AROUND 1500-2000 FT: RANGING ANYWHERE FROM 6000-8000 FT FRIDAY AND
5500-7500 FT SATURDAY.
SS
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