Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Hazardous Weather Conditions

Coastal Flood Advisory in effect from December 31, 05:00 AM PST until January 4, 02:00 PM PST

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

Lat: 37.66083°NLon: 122.11833°WElev: 46.0ft.

Clear

39°F

4°C

Humidity	80%
Wind Speed	E 3 MPH
Barometer	30.19 in (1022.35 mb)
Dewpoint	34°F (1°C)
Visibility	10.00 mi
Last update	30 Dec 05:20 AM PST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles SE Union City CA

Coastal Flood Advisory December 31, 05:00am until January 4, 02:00pm

Click here for hazard details and duration

Coastal Flood Advisory

Today
High: 58 °F
Increasing
Clouds
Tonight
Low: 46 °F
Mostly Cloudy
then Slight
Chance Rain
Wednesday
High: 55 °F
Rain Likely
and Patchy
Fog
Wednesday Night
Low: 50 °F
Rain and
Patchy Fog
New Year's Day
High: 61 °F
Rain and
Areas Fog
Thursday Night
Low: 55 °F
Rain Likely
and Patchy
Fog
Friday
High: 60 °F
Rain Likely
Friday Night
Low: 49 °F
Rain and
Patchy Fog
Saturday
High: 57 °F
Rain Likely
and Patchy
Fog

Detailed Forecast

Today

Increasing clouds, with a high near 58. Northeast wind 6 to 10 mph.

Tonight

A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 46. Northeast wind 8 to 11 mph.

Wednesday

Rain likely, mainly after 10am. Patchy fog after 5pm. Otherwise, cloudy, with a high near 55. Calm wind becoming northeast 5 to 7 mph in the morning. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Patchy fog before 7pm, then patchy fog after 10pm. Low around 50. East wind 3 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. Areas of fog. High near 61. East southeast wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Rain likely. Patchy fog. Otherwise, cloudy, with a low around 55. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Friday

Rain likely. Cloudy, with a high near 60. Chance of precipitation is 70%.

Friday Night

Rain. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 49.

Saturday

Rain likely. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 57.

Saturday Night

A chance of rain. Patchy fog before 11pm, then patchy fog after 3am. Otherwise, mostly cloudy, with a low around 46.

Sunday

A chance of rain. Areas of fog. Otherwise, partly sunny, with a high near 57.

Sunday Night

A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 45.