Dont use in SF Bay
Wind Alert App says it is blowing 26 knots, whitecaps and we are reefed. This app says it is blowing at 8. Also, the tide is wrong. So if you want to run aground and capsize use this app, otherwise buy Wind Alert. It cost more but it works.
skohottentot about
Windfinder Pro: Wind & Weather, v2.0.1