Blizzard Conditions Possible in Parts of Alaska; Flooding Potential Across Guam

A powerful storm will continue to move across the western and interior portions of Alaska through Wednesday morning. Coastal flooding, high winds, heavy snow and blizzard conditions are possible. An area of low pressure may produce heavy to excessive rainfall with the possibility of flooding in Guam and the Northern Marianas Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Mostly Cloudy

91°F

33°C

Humidity	59%
Wind Speed	SE 8 G 18 mph
Barometer	29.89 in
Dewpoint	75°F (24°C)
Visibility	8.00 mi
Heat Index	102°F (39°C)
Last update	22 Oct 2:56 pm AST

More Information:

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

Extended Forecast for

2 Miles WNW Lomas PR

Heat Advisory until October 22, 04:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory until October 22, 04:00pm
NOW until 4:00pm Tue
Heat Advisory
This Afternoon
High: 87 °F
Scattered
Showers
Tonight
Low: 73 °F
Isolated
Showers then
Mostly Clear
Wednesday
High: 85 °F
Showers
Likely
Wednesday Night
Low: 74 °F
Scattered
Showers
Thursday
High: 84 °F
Isolated
Showers then
Scattered
Showers
Thursday Night
Low: 75 °F
Mostly Clear
Friday
High: 86 °F
Scattered
Showers
Friday Night
Low: 74 °F
Showers
Likely

Detailed Forecast

This Afternoon

Scattered showers. Mostly sunny, with a high near 87. Southeast wind around 11 mph. Chance of precipitation is 30%.

Tonight

Isolated showers between 9pm and midnight. Mostly clear, with a low around 73. Southeast wind around 6 mph. Chance of precipitation is 10%.

Wednesday

Showers likely and possibly a thunderstorm before noon, then scattered showers and thunderstorms between noon and 3pm, then scattered showers after 3pm. Partly sunny, with a high near 85. South southeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday Night

Scattered showers, mainly after midnight. Partly cloudy, with a low around 74. South southeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 30%.

Thursday

Isolated showers, then scattered showers and thunderstorms after noon. Partly sunny, with a high near 84. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 50%.

Thursday Night

Mostly clear, with a low around 75. Light east wind.

Friday

Scattered showers. Partly sunny, with a high near 86. East wind 7 to 10 mph. Chance of precipitation is 50%.

Friday Night

Showers likely. Mostly cloudy, with a low around 74. Light east wind. Chance of precipitation is 60%.

Saturday

Scattered showers. Partly sunny, with a high near 85. East wind 3 to 8 mph. Chance of precipitation is 50%.

Saturday Night

Showers likely. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

Sunday

Scattered showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.