Skip Navigation Linkweather.gov 
NOAA logo-Select to go to the NOAA homepage National Weather Service Forecast Office   NWS logo-Select to go to the NWS homepage
WFO Guam

Local forecast by
"City, St" or Zip Code
  

Current Hazards
   Tropical Cyclones
   Guam Alerts
   Micronesian Alerts
   National Alerts Map
   National Alerts Text
Current Conditions
   Observations
   Satellite
   Hydrology
   River & Lake AHPS
Radar Imagery
   AAFB (Guam)
   AAFB (Guam) Dial up
   CONUS Radar
Forecasts
   Activity Planner
   Guam Public
   Marine
   Aviation
   ENSO
   Fire Weather
   Aviation Wx Ctr
   Local Graphics
   National Graphics
Climate
   Local
   National
   More...
Weather Safety
   Weather Radio
   Storm Ready
   EMWIN
About Us
   Our Mission
   Our Office
   Our Products
Contact Us
   Webmaster Pacific Region Links
   WSO Koror
   WSO Yap
   WSO Chuuk
   WSO Pohnpei
   WSO Majuro
   Regional HQ
   WFO Honolulu
   WSO Pago Pago
   Pac. Tsunami Ctr.
   Int. Tsunami Ctr.
   PEAC

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services Follow the National Weather Service on Facebook
NWS on Facebook

NOAA > NWS > WFO Guam's Home > Public > Public Definitions
Definitions For Public Forecasts
format divider

Mariana Island Forecast

Also called the Zone Forecast. Contains high and low temperatures, cloud cover, and chance of rain over the land out to 7 days. It also contains specific wind speeds out to 2 or 3 days, then wind speed qualifiers out to day 7 if they are significant. Possible qualifiers include: breezy (~15 to 25 mph), windy (~20 to 35 mph), very windy (35 to 45 mph), damaging (40 to 74 mph) and typhoon force (75 mph or more).

7-day Guam/Saipan Forecast Table

Also called the Tabular Forecast, this product contains high and low temperatures and chance of rain out to 7 days. If the chance of rain is less than 50%, cloud cover will be listed, otherwise showers will be listed.

Surf Forecast

Contains forecast surf heights for today and the next day along Marianas coasts by direction which the coast faces, and information about rip current and lightning risks on the local beaches and reefs.

Micronesian Island Forecast

Also called the Micronesian Coastal Zone Forecast, this forecast contains expected wind, sea heights, cloud cover and chance of rain for the next 5 days.

Area Synoptic Discussion

This discussion describes current weather features in the tropical Northwest Pacifc and the significant weather each feature is causing.