620
FNUS70 PGUM 202345
FWSGUM

Spot Forecast for SE-25-04...NMFS
National Weather Service Tiyan GU
945 AM ChST Mon Jul 21 2025

Forecast is based on forecast start time of 1000 ChST on July 21.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office by email at nws.gum.operations@noaa.gov
if you have questions or concerns with this forecast.

.DISCUSSION...A much drier pattern is now in place across Guam, with
only spotty showers and mostly high level clouds. With light winds
and clearing sky cover, expect island convection across Guam this
afternoon, with scattered showers and isolated thunderstorms over the
island and just off the western and northern coastline.

.TODAY (GUAM)...

Sky/weather.........Partly cloudy (40-50 percent). Isolated showers
                    in the morning, then scattered showers and
                    isolated thunderstorms in the afternoon on Guam.
Surface winds (kts).South winds 5 to 10 knots.
Wave heights........3 to 4 feet.

.TONIGHT (GUAM)...

Sky/weather.........Mostly cloudy (55-65 percent). Scattered
                    showers and isolated thunderstorms.
Surface winds (kts).Southeast winds 6 to 10 knots.
Wave heights........3 to 4 feet.

.TUESDAY (GUAM)...

Sky/weather.........Partly sunny (50-60 percent). Isolated showers
                    and thunderstorms.
Surface winds (kts).Southeast winds 5 to 12 knots.
Wave heights........4 to 5 feet.

$$
Forecaster...KK
Requested by...Benjamin Richards
Type of request...MARINE
.TAG 2518319.0/GUM
.DELDT 07/21/25
.FormatterVersion 2.0.0
.EMAIL benjamin.richards@noaa.gov,ops.sette@noaa.gov,nws.gum.operations@noaa.gov,eva.schemmel@noaa.gov,co.sette@noaa.gov