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Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
229 PM EST Mon Dec 22 2025
Day 3
Valid 12Z Wed Dec 24 2025 - 12Z Thu Dec 25 2025

...THERE IS A HIGH RISK FOR EXCESSIVE RAINFALL ACROSS SOUTHERN
CALIFORNIA...

2100 UTC UPDATE:

The primary change to the previous day 3 Excessive Rainfall Outlook
was to add a high risk area along the west to east Transverse
Range region of Southern California after collaboration with WFO
LOX. Anomalous 850-700 mb moisture flux...5+ standard deviations
above the mean...will impact Southern CA late day 2 into day 3
ahead of the amplifying mid to upper level trof off the CA coast.
The heavy rainfall totals for Southern CA will likely occur over an
18 hour period, with widespread 4-7 inch totals, with isolated max
amounts of 9"+. Expect a well defined south to north precip band
in this anomalous moisture flux axis with hourly rainfall rates of
.50-1.5"+ likely. The potential for high hourly rainfall totals
will accentuate runoff over soil that is relatively dry and or over
recent burn scar areas. This will pose a significant threat of
flash flooding, landslides, rock falls and mud slides. The greater
than normal travel during the Christmas Holiday will likely expose
a potentially larger number of people to these lift threatening
hazards and was taken into consideration with the upgrade to high
risk.
Excessive Rainfall Discussion NWS Weather Prediction Center College Park MD 229 PM EST Mon Dec 22 2025 Day 3 Valid 12Z Wed Dec 24 2025 - 12Z Thu Dec 25 2025 ...THERE IS A HIGH RISK FOR EXCESSIVE RAINFALL ACROSS SOUTHERN CALIFORNIA... 2100 UTC UPDATE: The primary change to the previous day 3 Excessive Rainfall Outlook was to add a high risk area along the west to east Transverse Range region of Southern California after collaboration with WFO LOX. Anomalous 850-700 mb moisture flux...5+ standard deviations above the mean...will impact Southern CA late day 2 into day 3 ahead of the amplifying mid to upper level trof off the CA coast. The heavy rainfall totals for Southern CA will likely occur over an 18 hour period, with widespread 4-7 inch totals, with isolated max amounts of 9"+. Expect a well defined south to north precip band in this anomalous moisture flux axis with hourly rainfall rates of .50-1.5"+ likely. The potential for high hourly rainfall totals will accentuate runoff over soil that is relatively dry and or over recent burn scar areas. This will pose a significant threat of flash flooding, landslides, rock falls and mud slides. The greater than normal travel during the Christmas Holiday will likely expose a potentially larger number of people to these lift threatening hazards and was taken into consideration with the upgrade to high risk.
An Evacuation Warning is in effect from Monday, December 22, 2025, at 6:00 pm through Tuesday, December 23, 2025, at 6:00 pm for:

    Ventura Beach RV Resort (City of Ventura)

Evacuation Warnings are in effect from Tuesday, December 23, 2025, at 6:00 pm through Wednesday, December 24, 2025, at 6:00 pm for the following areas:

    Mountain Fire Burn Scar (Unincorporated Camarillo)
    Matilija Canyon/North Fork/Camino Cielo (Unincorporated Ojai) 
    Camp Chaffee (Unincorporated Ventura)

Impacted County residents will be notified by VC Alert on Tuesday afternoon. For more information on the affected areas, visit the incident MAP. 

Kenneth Fire – Los Angeles County issued an Evacuation Warning for residents within the Kenneth Fire Burn Scar, effective Tuesday, December 23, 2025, at 11:00 am. A Wireless Emergency Alert (WEA) announcing this warning was sent at 11:00 am. on Monday, December 22, 2025. Due to cellular tower overlap, Ventura County residents near the Los Angeles County border, particularly in the unincorporated area of Oak Park, may have received this alert.  There are no evacuation notifications for Ventura County residents related to the Kenneth Fire.
An Evacuation Warning is in effect from Monday, December 22, 2025, at 6:00 pm through Tuesday, December 23, 2025, at 6:00 pm for: Ventura Beach RV Resort (City of Ventura) Evacuation Warnings are in effect from Tuesday, December 23, 2025, at 6:00 pm through Wednesday, December 24, 2025, at 6:00 pm for the following areas: Mountain Fire Burn Scar (Unincorporated Camarillo) Matilija Canyon/North Fork/Camino Cielo (Unincorporated Ojai) Camp Chaffee (Unincorporated Ventura) Impacted County residents will be notified by VC Alert on Tuesday afternoon. For more information on the affected areas, visit the incident MAP. Kenneth Fire – Los Angeles County issued an Evacuation Warning for residents within the Kenneth Fire Burn Scar, effective Tuesday, December 23, 2025, at 11:00 am. A Wireless Emergency Alert (WEA) announcing this warning was sent at 11:00 am. on Monday, December 22, 2025. Due to cellular tower overlap, Ventura County residents near the Los Angeles County border, particularly in the unincorporated area of Oak Park, may have received this alert. There are no evacuation notifications for Ventura County residents related to the Kenneth Fire.
Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
229 PM EST Mon Dec 22 2025
Day 3
Valid 12Z Wed Dec 24 2025 - 12Z Thu Dec 25 2025

...THERE IS A HIGH RISK FOR EXCESSIVE RAINFALL ACROSS SOUTHERN
CALIFORNIA...

2100 UTC UPDATE:

The primary change to the previous day 3 Excessive Rainfall Outlook
was to add a high risk area along the west to east Transverse
Range region of Southern California after collaboration with WFO
LOX. Anomalous 850-700 mb moisture flux...5+ standard deviations
above the mean...will impact Southern CA late day 2 into day 3
ahead of the amplifying mid to upper level trof off the CA coast.
The heavy rainfall totals for Southern CA will likely occur over an
18 hour period, with widespread 4-7 inch totals, with isolated max
amounts of 9"+. Expect a well defined south to north precip band
in this anomalous moisture flux axis with hourly rainfall rates of
.50-1.5"+ likely. The potential for high hourly rainfall totals
will accentuate runoff over soil that is relatively dry and or over
recent burn scar areas. This will pose a significant threat of
flash flooding, landslides, rock falls and mud slides. The greater
than normal travel during the Christmas Holiday will likely expose
a potentially larger number of people to these lift threatening
hazards and was taken into consideration with the upgrade to high
risk.
Excessive Rainfall Discussion NWS Weather Prediction Center College Park MD 229 PM EST Mon Dec 22 2025 Day 3 Valid 12Z Wed Dec 24 2025 - 12Z Thu Dec 25 2025 ...THERE IS A HIGH RISK FOR EXCESSIVE RAINFALL ACROSS SOUTHERN CALIFORNIA... 2100 UTC UPDATE: The primary change to the previous day 3 Excessive Rainfall Outlook was to add a high risk area along the west to east Transverse Range region of Southern California after collaboration with WFO LOX. Anomalous 850-700 mb moisture flux...5+ standard deviations above the mean...will impact Southern CA late day 2 into day 3 ahead of the amplifying mid to upper level trof off the CA coast. The heavy rainfall totals for Southern CA will likely occur over an 18 hour period, with widespread 4-7 inch totals, with isolated max amounts of 9"+. Expect a well defined south to north precip band in this anomalous moisture flux axis with hourly rainfall rates of .50-1.5"+ likely. The potential for high hourly rainfall totals will accentuate runoff over soil that is relatively dry and or over recent burn scar areas. This will pose a significant threat of flash flooding, landslides, rock falls and mud slides. The greater than normal travel during the Christmas Holiday will likely expose a potentially larger number of people to these lift threatening hazards and was taken into consideration with the upgrade to high risk.