Where is the preserve?

Site Selection

Dr. Gordon Spear describes how a site within the preserve is selected.

Site Validation

Dr. Gordon Spear describes how a site is validated.

Local observing conditions, weather conditions, and predictions

This is the current weather.

Click for Rohnert Park, California Forecast

This is the current phase of the moon .

The moon NOW!



Clear Sky Clock

Cloud cover plus atmospheric transparency predictions (and more) for the next 42 hours. Each block represents an hour. White represents total cloud cover and a correspondingly opaque atmosphere. Dark blue represents clear conditions.



Current Satellite and Radar Images

West Coast and Eastern Pacific Weather Satellite Image

Visible Satellite Image
Visible Satellite Loop
Infrared Satellite Image
Infrared Satellite Loop
Fog and Low Clouds Image
Fog and Low Clouds Loop
Water Vapor
Water Vapor Loop
Doppler Radar
Doppler Radar Loop

Sunrise, Sunset and Twilight

The times on the vertical axis are Pacific Standard Time (PST)