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Mission Briefing




Mission preview - Our story looking at this Delta rocket launch of the GPS 2R-12 satellite.

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

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

Global Positioning System - Description of the U.S. Air Force's space-based navigation network.

Delta 2 rocket - Overview of the Delta 2 7925-model rocket used to launch GPS satellites.

Pre-launch flow - Illustration of the rocket checkout and assembly at Cape facilities.

SLC-17 - The launch complex where Delta rockets fly from Cape Canaveral.

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




Launch weather forecast
Posted: June 17, 2004

 Forecast for Saturday, June 19

Issued: Wednesday, June 16
Launch Weather Officer: 2Lt. Travis Longmire, 45th Weather Squadron

Synoptic Discussion: "The Subtropical Ridge is the dominant weather feature across the northern part of Florida and the SE Gulf Coast states. Over the next day the axis of the ridge will slowly settle southward resulting in afternoon showers developing closer to CCAFS. The Cape will still see isolated nighttime showers and Thunderstorms with most daytime thunderstorms forming west of I-95 through central Florida and moving west throughout the afternoon hours.

"The primary concern on launch day will be isolated showers forming to the west and building back over CCAFS."

Clouds: Few at 1,500 feet with 1/8ths sky coverage; Scattered at 3,000 feet with 2/8ths sky coverage; Broken at 25,000 feet with 5/8ths sky coverage

Visibility: 7 miles

Launch Pad Winds: Southerly from 180 degrees at 8 gusting to 12 knots

Temperature: 81 to 83 degrees F

Relative Humidity: 75 percent

Weather: Vicinity rain showers

Probability of Violating Weather Constraints: 30 percent

Concerns: Cumulus Cloud Rule and flight through precipitation

 

 24- and 48-hour Delay Forecasts

Sunday's Probability of Violating Constraints: 40 percent
Concerns: Anvil Cloud Rule, Cumulus Cloud Rule and flight through precipitation

Monday's Probability of Violating Constraints: 60 percent
Concerns: Anvil Cloud Rule, Cumulus Cloud Rule and flight through precipitation

 

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