Forecast for Tuesday, December 21

Issued: Saturday, December 18 Launch Weather Officer: Kathy Winters, 45th Weather Squadron Synoptic Discussion: "A cold front will move through the area Sunday bringing Arctic air into Central Florida. Freezing temperatures will occur in Central Florida for both Monday and Tuesday mornings, but temperatures will begin to moderate by Tuesday afternoon. Strong winds will follow the front on Monday, but high pressure will set into Florida Tuesday allowing for winds to subside. A slight concern remains for a violation of ground winds." Clouds: Scattered at 4,000 feet with 3/8ths sky coverage and tops at 6,000 feet Visibility: 10 miles Launch Pad Winds: East-northeasterly from 070 degrees at 8 gusting to 12 knots Temperature: 63 degrees F Relative Humidity: 60 percent Weather: Partly cloudy Probability of Violating Weather Constraints: 10 percent Concerns: Ground wind

Times of note

Tuesday's launch window: 2:36 to 5:31 p.m. EST (1932-2231 GMT) Tuesday's sunset: 5:31 p.m. EST (2231 GMT) Wednesday's launch window: 2:36 to 5:32 p.m. EST (1932-2232 GMT) Wednesday's sunset: 5:32 p.m. EST (2232 GMT)

24- and 48-hour Delay Forecasts

Wednesday's Probability of Violating Constraints: 30 percent Concerns: Ground wind, flight through precipitation and cumulus cloud rules Thursday's Probability of Violating Constraints: N/A Concerns: N/A