During the countdown, formal weather briefings occur approximately as follows:
L-24 hr 0 min: Briefing for Flight Director and astronauts
L-21 hr 0 min: Briefing for removal of Rotating Service Structure
L-9 hr 00 min: Briefing for external tank fuel loading
L-4 hr 30 min: Briefing for Space Shuttle Launch Director
L-3 hr 55 min: Briefing for astronauts
L-2 hr [...]

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Gill Instruments has extended its WindObserver line of two-axis ultrasonic anemometers to include an extreme-weather version that incorporates high-temperature heating elements designed keep the product ice-free in most conditions.
With high heating power and the ability to measure wind speeds up to 168 miles per hour, the instrument is ideal for use in extreme conditions where [...]

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