A series of storm systems will impact the West Coast over the next week bringing heavy rain, snow and flooding. This change in the pattern will be welcome as the first two months of 2016 have been relatively dry across parts of California and Oregon. Areas of yellows and oranges in the graphic below show precipitation of 90% and less.  

percent of norm

Weather SetUp

A plume of moisture will focus on the west coast for the next couple of days. This combined with a series of systems will allow for significant amounts of precipitation across parts of California, Oregon and Washington.

water vap

 

Precipitation Amounts

Precipitation totals from Today through Tuesday Night will be significant, especially along the coast. Widespread amounts of 3 to 6+ inches can be expected with higher amounts possible, especially on the upwind side of the mountains. Rain fall rates could exceed 0.75 to 1.5 inches an hour over the weekend which would lead to flash flooding and mudslides.

5 day rain

For the mountains, snowfall of 8 inches or more is possible, especially in California for  Saturday Morning through Sunday Night.

snow

The active pattern will continue into mid next week where additional amounts of 2 to 5+ inches are possible for Wednesday and Thursday along the Washington to Northern California Coast..

Current Watches, Warnings and Advisories

Currently NWS Weather Forecast offices have a variety of Weather Watches, Warnings and Advisories in effect for Gale and Storm Warning conditions along the coast to High Wind advisories and warnings, Flood Watches and Winter Storm Watches, Warnings and Advisories inland.

watch warn adv

Recommendations

For those individuals currently in an Areal or Flash Flood Watch, remain aware of changes in creeks and streams in your area, especially if you have a burn scar upstream. Areas recently burned do not allow rain to soak into the soil; so most rainfall will runoff and lead to flash flooding and potential mud slides. If you are traveling, avoid routes that cross rivers and creeks that are known to have quick responding flooding problems. If a flash flood warning is issued, follow the advice of your local emergency management.

For those with boating operations and coastal property, be prepared for high winds and rough seas for the next several days.  

Our Promise

The team at WxIntegrations will continue to provide relevant information and resources to help you better understand and prepare by incorporating weather impacts into your planning and response.

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