Hurricane Watch: An announcement that sustained winds of 64 knots (74 mph or 119 km/hr) or higher are possible within the specified area in association with a tropical, subtropical, or post-tropical cyclone.
PSTN Definition The public switched telephone network (PSTN) is the worldwide collection of interconnected public telephone networks that was designed primarily for voice traffic. The PSTN is a circuit-switched network. That is, a dedicated circuit (also referred to as a channel) is established for the duration of a transmission, such as a telephone call.
PST is Pacific Standard Time. There is no OST time zone, though  there is an OMST zone, Omsk Time (Russia), which is 7 hours ahead  of UTC, therefore the difference between â¦ the two would be 15 hours.       /  . Answered. In Science.