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Launch timeline - Chart with times and descriptions of events to occur during the launch.

Weather forecast - The latest forecast for launch day conditions.

Launch hazard area - The restricted area during liftoff.

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Orbit insertion - Illustration of AMC-11's trek to geostationary orbit.

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Atlas directory - See our coverage of previous Atlas rocket flights.





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Launch weather forecast
Posted: May 18, 2004

 Forecast for Wednesday, May 19

Issued: Tuesday, May 18
Launch Weather Officers: Johnny Weems, 45th Weather Squadron

Synoptic Discussion: "High pressure will continue to dominate the area with breezy afternoon on-shore winds and near seasonal temperatures. Afternoon winds will slightly decrease in strength by Wednesday as the ridge axis positions across Central Florida. Slight chance of early morning showers due to southeasterly on-shore winds.

"The main concerns, albeit slight, for launch day are winds enhanced by the sea breeze and the slight possibility of isolated offshore showers."

Clouds: Scattered at 3,000 feet with 1-2/8ths sky coverage and tops at 5,000 feet; Scattered at 25,000 feet with 1-2/8ths sky coverage and tops at 28,000 feet

Visibility: 7 miles

Launch Pad Winds: Easterly from 110 degrees at 12 to 15 knots

Temperature: 78 degrees F

Relative Humidity: 70 percent

Weather: None

Solar Activity: Low

Probability of Violating Weather Constraints: less than 10 percent

Concerns: 90-foot level wind, isolated showers

 

 Times of note

Launch window: 5:52 to 8:46 p.m. EDT (2152-0046 GMT)
Sunrise: 6:30 a.m. EDT (1030 GMT)
Sunset: 8:08 p.m. EDT (0008 GMT)

 

 Forecast for 24- and 48-hour delays

Thursday's Probability of Violating Constraints: less than 10 percent
Concerns: 90-foot level wind, isolated showers

Friday's Probability of Violating Constraints: N/A
Concerns: N/A

 

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