Flash Flood Watch

02/12/2019 1:40 PM through 02/13/2019 4:00 AM

Update to NWS-IDP-PROD-3367132-2947235 NWS-IDP-PROD-3368439-2948601

Flash Flood Watch issued February 12 at 1:40PM PST expiring February 14 at 10:00AM PST by NWS San Francisco CA


* The Flash Flood Watch continues for the entire San Francisco
Bay Area and Central Coast except for the hills of San Benito
County and the East Bay Valleys.

* From 10 PM PST this evening through Thursday morning

* An atmospheric river with origins near Hawaii will take aim at
the San Francisco Bay Area and Central Coast tonight through
Thursday morning. Rainfall rates of at least half an inch per
hour are possible during the heaviest showers, with the highest
rates in the higher terrain. Recent rainfall has saturated soils
across the area, and the additional heavy rainfall will create
the potential for widespread shallow landslides, rockslides, and
debris flows. Periods of heavy rainfall will likely inundate
storm drains with rapid rises on small creeks and streams.

* The Wednesday morning commute will be adversely impacted with
flooding roadways and ponding of water expected. Periods of
heavy rain are also possible during the Wednesday afternoon
and Thursday morning commutes.


A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

Target Area

Southern Salinas Valley/Arroyo Seco and Lake San Antonio; San Francisco Bay Shoreline; Southern Monterey Bay and Big Sur Coast; North Bay Mountains; Santa Clara Valley Including San Jose; Santa Lucia Mountains and Los Padres National Forest; North Bay Interior Valleys; San Francisco; East Bay Hills and the Diablo Range; San Francisco Peninsula Coast; Northern Monterey Bay; Coastal North Bay Including Point Reyes National Seashore; Northern Salinas Valley/Hollister Valley and Carmel Valley; Santa Cruz Mountains

Sender: NWS San Francisco CA
Sent: 1:40 PM on 02-12-2019