591
FSUS46 KSGX 212327
QPSSGX
QUANTITATIVE PRECIPITATION FORECAST
NATIONAL WEATHER SERVICE SAN DIEGO CA
327 PM 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
16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
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 0.05 0.17 0.65
NEWPORT BEACH
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.14 0.62
LAGUNA BEACH
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.13 0.62
SAN CLEMENTE
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.12 0.53
..ORANGE COUNTY INLAND AREAS
16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
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 0.05 0.18 0.76
FULLERTON
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.31 0.80
BREA
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.36 0.92
VILLA PARK
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.16 0.66
..SANTA ANA MOUNTAINS AND FOOTHILLS
16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
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 0.04 0.16 0.63
SILVERADO CANYON, 3 MI EAST OF SILVERADO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.20 0.78
MODJESKA PRESERVE
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.16 0.82
SANTIAGO PEAK
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.04 0.18 0.77
EL CARISO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.12 0.47
SANTA ROSA PLATEAU
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.08 0.46
..SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE
16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
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 0.03 0.16 0.87
SAN BERNARDINO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.10 0.54
BEAUMONT
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.04 0.36
RIVERSIDE
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.09 0.44
PERRIS VALLEY CHANNEL
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.07 0.36
PRADO DAM
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.13 0.57
TEMECULA
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.05 0.32
HEMET
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.26
..RIVERSIDE COUNTY MOUNTAINS
16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
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 0.03 0.04 0.39
..COACHELLA VALLEY
16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
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 0.12
THERMAL
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03
..SAN BERNARDINO COUNTY MOUNTAINS
16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
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 0.12 0.59 3.35
LYTLE CREEK
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.08 0.37 2.17
WRIGHTWOOD
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.17 1.19
LAKE ARROWHEAD
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.08 0.27 1.39
BIG BEAR LAKE
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.56
BIG MORONGO CANYON
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.27
..APPLE AND LUCERNE VALLEYS
16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
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 0.03 0.41
VICTORVILLE
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.45
APPLE VALLEY
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.38
..SAN DIEGO COUNTY COASTAL AREAS
16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
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 0.04 0.07 0.39
MIRAMAR
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.03 0.23
SAN DIEGO INTERNATIONAL AIRPORT
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.03 0.22
CHULA VISTA
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.02 0.15
SAN YSIDRO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.02 0.14
..SAN DIEGO COUNTY VALLEYS
16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
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 0.03 0.06 0.39
RANCHO BERNARDO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.03 0.26
LA MESA
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.01 0.17
EL CAJON
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.01 0.15
..SAN DIEGO COUNTY MOUNTAINS
16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
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 0.02 0.05 0.31
JULIAN
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.05 0.13
MOUNT LAGUNA
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.04 0.09
CAMPO
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.08
..SAN DIEGO COUNTY DESERTS
16SUN 22SUN 04MON 10MON 16MON 22MON 04TUE 10TUE 16TUE 22TUE
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 0.04
DRY WEATHER CONTINUES THROUGH TUESDAY MORNING. A LOW PRESSURE
SYSTEM AND ASSOCIATED ATMOSPHERIC RIVER WILL BRING INCREASING
CHANCES FOR WIDESPREAD HEAVY RAINFALL FOR EARLY WEDNESDAY INTO
THURSDAY. THE HEAVIEST RAINFALL WILL LIKELY OCCUR WEDNESDAY
MORNING THROUGH WEDNESDAY EVENING. OROGRAPHIC ENHANCEMENT OF
PRECIPITATION 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: 60-85%
- EAST OF CAJON PASS: 55-70%
PROBABILITIES OF 8 INCHES OR MORE:
- CAJON PASS WESTWARD: 25-45%
- EAST OF CAJON PASS: 10-25%
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: 55-80%, HIGHEST IN SAN DIEGO COUNTY
- SAN DIEGO COUNTY COAST/VALLEYS: 40-85%, HIGHEST NORTHWEST
- DESERTS: 10-15% (LOWER DESERTS), 25-50% (HIGH DESERT)
PROBABILITIES OF 3 INCHES OR MORE:
- ORANGE COUNTY/SANTA ANA MOUNTAINS: 65-85%
- INLAND EMPIRE: 30-75%, HIGHEST WEST
- RIVERSIDE/SAN DIEGO COUNTY MOUNTAINS: 35-60%, HIGHEST IN SAN DIEGO COUNTY
- SAN DIEGO COUNTY COAST/VALLEYS: 15-65%, HIGHEST NORTHWEST
- DESERTS: 5-15% (LOWER DESERTS), 10-30% 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 WILL DROP LOWER
FOR FRIDAY AND SATURDAY, BUT CONFIDENCE IN SNOW LEVELS IS LOW DUE
TO THE SPREAD AMONG MODEL SOLUTIONS.
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