Forecast for Friday, August 3

Issued: Monday, July 30 Launch Weather Team: 45th Weather Squadron Synoptic Discussion: "Widespread afternoon and evening showers and thunderstorms are expected every afternoon over the next few days. Combination of deep tropical moisture, a weak frontal trough, the daily onset of the west coast and east coast sea breezes, and favorable steering wind pattern will concentrate all activity on the eastern half of the Florida Peninsula. Conditions begin to improve late week as high pressure builds in, and slightly lower moisture levels. "During the countdown and launch window, the only concerns will be for late night cumulus clouds forming along the coast and possible anvil clouds form nearby thunderstorms over the Gulf Stream." Clouds: Cumulus scattered at 3,000 feet and tops at 12,000 feet; Cirrostratus scattered at 28,000 feet and tops at 30,000 feet Visibility: 10 miles Launch Pad Winds: Southerly from 200 degrees at 5 gusting to 10 knots Temperature: 73 to 75 degrees F Relative Humidity: 90 percent Weather: Thunderstorms over the Gulf Stream Probability of Violating Weather Constraints: 20 percent Concerns: Cumulus Cloud Rule, Anvil Cloud Rule

24-hour Delay Forecast

Saturday's Probability of Violating Constraints: 20 percent Concerns: Cumulus Cloud Rule, Anvil Cloud Rule

Times of note

Friday's launch times: 5:35 and 6:11 a.m. EDT Saturday's launch times: 5:26 to 6:02 a.m. EDT