Launch weather forecast
Posted: December 16, 2003

 Forecast for Wednesday, December 17

Issued: Tuesday, December 16
Launch Weather Officer: Johnny Weems, 45th Weather Squadron

Synoptic Discussion: "Increasing cloudiness throughout the afternoon and evening in advance of an approaching cold front. The chance of showers will increase through Tuesday night with the front expected to pass through the local area early Wednesday morning. Cloudiness and threat of showers will decrease through the day Wednesday but wind behind the front will strengthen as much cooler air moves into Central Florida; low temperatures in the low 40s and upper 30s will be common across Central FL on both Thursday and Friday mornings.

"The chief concern for Wednesday night will be gusty northwest winds."

Clouds: Scattered at 3,000 feet with 1-2/8ths sky coverage and tops at 5,000 feet; Scattered at 28,000 feet with 1-2/8ths sky coverage and tops at 32,000 feet

Visibility: 7 miles

Launch Pad Winds: Northwesterly from 310 degrees at 15 to 21 knots

Temperature: 52 degrees F

Relative Humidity: 60 percent

Weather: None

Solar Activity: Low

Probability of Violating Weather Constraints: 40 percent

Concerns: Winds at 90-foot level greater than 25 knots

 

 Forecast for Thursday and Friday

Thursday's Probability of Violating Constraints: 20 percent
Concerns: Winds at 90-foot level

Friday's Probability of Violating Constraints: 10 percent
Concerns: Winds at 90-foot level

 

Flight data file
Vehicle: Atlas 3B (AC-203)
Payload: UHF Follow-On F11
Launch date: Dec. 17, 2003
Launch window: 9:30 to 11:30 p.m. EST (0230-0430 GMT on 18th)
Launch site: Complex 36B, Cape Canaveral, Florida
Satellite broadcast: Galaxy 3, Transponder 5, C-band

Pre-launch briefing
Launch preview - Our story looking at this Atlas 3 rocket launch of the UHF F11 satellite.

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.

Ground track - See the trajectory the rocket will follow during its flight.

Orbit insertion - Illustration of UHF F11's trek to geostationary orbit.

UHF satellites - Overview of the U.S. Navy's UHF Follow-On communications constellation.

Atlas 3B vehicle data - Description of rocket being used in this launch.

The RD-180 - Facts and figures about the Russian-built engine to power Atlas 3 and 5.

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

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