082
FSUS46 KLOX 111048
QPSLOX

Quantitative Precipitation Forecast
National Weather Service Los Angeles/Oxnard CA
339 AM PDT Tue Mar 11 2025

Precipitation forecasts in inches are provided in 3-hour
increments until 1700 followed by 6-hour increments until 0500.
Thunderstorm chances cover up to 0500 on day 1 only.

Light rainfall amounts greater than zero but less than a tenth of an
inch are shown as lgt.

The discussion covers the period from: Tue Mar 11 2025 through Mon Mar 17 2025.

&&

                                    05-08  08-11  11-14  14-17  |  17-23  23-05

San Luis Obispo County...

LSRC1:Cambria                          0.0    0.0    0.0    0.0   |   0.0   0.0
SMRC1:Santa Margarita                  0.0    0.0    0.0    0.0   |   0.0   0.0
NIPC1:Lopez Lake                       lgt    0.0    0.0    0.0   |   0.0   0.0

1-Hr Rates:              Coasts/Valleys   Foothills/Mountains
Expected Peak (in/hr):   0.01-0.03        0.01-0.03
Probability 0.50+ in/hr: <5%              <5%
Probability 1.00+ in/hr: <5%              <5%

Peak rates expected to occur between: 0400-0800

Chance of Thunderstorms: 0%

&&                                    05-08  08-11  11-14  14-17  |  17-23  23-05

Santa Barbara County...

SIYC1:Santa Maria                      lgt    0.0    0.0    0.0   |   0.0   0.0
SBTC1:Santa Barbara Potrero            0.0    lgt    lgt    lgt   |   0.0   0.0
GBRC1:Gibraltar Dam                    lgt    lgt    lgt    lgt   |   lgt   0.0
SMCC1:San Marcos Pass                  lgt    lgt    lgt    0.0   |   lgt   0.0
SBFC1:Santa Barbara City               lgt    lgt    lgt    0.0   |   0.0   0.0

1-Hr Rates:              Coasts/Valleys   Foothills/Mountains
Expected Peak (in/hr):   0.01-0.03        0.01-0.05
Probability 0.50+ in/hr: <5%              <5%
Probability 1.00+ in/hr: <5%              <5%

Peak rates expected to occur between: 0400-0800

Chance of Thunderstorms: 0%

&&                                    05-08  08-11  11-14  14-17  |  17-23  23-05

Ventura County...

FGWC1:Fagan Canyon                     lgt    lgt    lgt    lgt   |   lgt   0.0
HRCC1:Hopper Canyon                    lgt    lgt    0.1    lgt   |   0.0   0.0
MTDC1:Matilija Dam                     lgt    lgt    lgt    lgt   |   lgt   0.0
VTUC1:Ventura City                     lgt    lgt    lgt    lgt   |   0.0   0.0
MORC1:Moorpark                         lgt    lgt    lgt    lgt   |   lgt   0.0
CRXC1:Circle X Ranch                   lgt    lgt    lgt    lgt   |   0.0   lgt

1-Hr Rates:              Coasts/Valleys   Foothills/Mountains
Expected Peak (in/hr):   0.01-0.05        0.05-0.10
Probability 0.50+ in/hr: <5%              <5%
Probability 1.00+ in/hr: <5%              <5%

Peak rates expected to occur between: 0900-1300

Chance of Thunderstorms: 0%

&&                                    05-08  08-11  11-14  14-17  |  17-23  23-05

Los Angeles County...

WFKC1:West Fork Heliport               lgt    0.1    0.4    0.1   |   lgt   0.0
BDDC1:Big Dalton Dam                   lgt    0.1    0.2    lgt   |   lgt   0.0
PCDC1:Pacoima Dam                      lgt    0.1    0.2    lgt   |   lgt   0.0
FLTC1:La Canada Flintridge             lgt    lgt    0.2    lgt   |   lgt   0.0
SAUC1:Saugus                           lgt    lgt    0.1    lgt   |   0.0   0.0
CQT:Downtown LA                        lgt    0.1    0.2    lgt   |   lgt   0.0
MLUC1:Malibu Big Rock Mesa             lgt    0.1    0.1    lgt   |   0.0   0.0

1-Hr Rates:              Coasts/Valleys   Foothills/Mountains
Expected Peak (in/hr):   0.10-0.20        0.20-0.30
Probability 0.50+ in/hr: 10%              25%
Probability 1.00+ in/hr: <5%              <5%

Peak rates expected to occur between: 1000-1300

Chance of Thunderstorms: 0%

&&

DISCUSSION:

A storm will move to the south of the today. Light rain will fall
through the morning and into the afternoon overf LA county. Most
areas will see rainfall totals under a quarter inch, except for LA
county where a third to two thirds of an inch could fall with local
1 inch amounts over the coastal slopes of the eastern San Gabriel
mtns. Snow levels will be between 5500 and 6000 ft.

Another stronger storm will affect the area during the
Wednesday/Thursday period. This system with well defined warm and
cold fronts will bring 1 to 2 inches of rain to the flatter portions
of the csts/vlys and 2 to 4 inches over the foothills and coastal
slopes. Rain rates exceeding a half inch per hour area likely,
especially Wednesday night into early Thursday when the cold front
passes through the area. The cold front may generate TSTMs as well.

A flood watch is in effect from Wed eve to Thu afternoon.

1 to 2 ft of snow could fall above 6500 ft. Snow levels will fall to
near 3000 ft Thu afternoon and the major mtn passes may be adversly
affected.

$$