TL;DR — what to do right now
- Beach/water: mostly OK today, watch the southwest swell tomorrow. No marine alerts active for Guam. Winds and surf pick up Saturday but no advisory yet.
- Heat: hot and humid. High near 87°F today, heat index as high as 100°F. Saturday could feel like 102°F. Drink water, take breaks in shade, don’t overdo outdoor work at midday.
- Rain: yes, scattered but not heavy. Today 40% chance of showers (half to three-quarters inch possible). Thunderstorm chances climb through the weekend, peaking Sunday at 40%.
- Typhoon threat: no direct threat to Guam. Saudel is tracking northwest and the Northern Marianas (Saipan, Tinian, Alamagan, Pagan, Agrihan) are under watches. Guam is on the storm’s outer edge — expect gusty southwest winds and building swell, but the center passes well to the north.
Full brief
No active NWS alerts for Guam as of post time. Tropical Storm Saudel is 345 miles east of Guam and tracking northwest at 13 mph, with the eye expected to pass through the far Northern Marianas (not Guam) on Saturday as an intensifying typhoon.
Today (Friday): partly sunny with scattered rain showers, high near 87°F, heat index up to 100°F, light southwest winds 0–5 mph. Half to three-quarters inch of rain possible — bring an umbrella if you’re out. Tonight: isolated showers, low around 78°F, southwest winds 5–10 mph. What to do today: normal day, just stay hydrated and watch for passing showers.
Saturday: scattered showers and thunderstorms, high near 88°F, heat index up to 102°F, southwest winds 10–15 mph. Quarter to half inch of rain possible. This is when the southwest swell starts showing up on west- and south-facing shores — watch flags at beach parks.
Sunday: more thunderstorms, high near 87°F, southwest winds holding at 15 mph. Half to three-quarters inch possible. Monday through Tuesday: showers continue at 30–40% chances, highs 85–86°F, southwest winds easing to 5–10 mph.
What to do right now: no urgent action needed on Guam. If you’re traveling north to Saipan or Tinian this weekend, postpone — the Northern Marianas are under a Tropical Storm Watch with typhoon-strength winds possible Saturday afternoon. Stay tuned for updates; another brief goes out tomorrow morning.