Forecast for Sunday, April 6

Issued: Friday, April 4 Launch Weather Officer: Johnny Weems, 45th Weather Squadron Synoptic Discussion: "Increasing upper level cloudiness today with a very slight chance of late afternoon/evening showers/thunderstorms, mainly inland. Increasing moisture and temperatures coupled with a minor upper level disturbance will increase the probability of late afternoon/evening showers/thunderstorms on both Saturday and Sunday. Chance of thunderstorms Saturday afternoon/evening could impact launch preparations. The front previously expected to influence local weather on Monday is now expected later in the week. "The greatest concerns for Sunday morning's attempt will be layered clouds and precipitation aloft; concern for showers increases after noon." Clouds: Scattered at 3,000 feet with 2-3/8ths sky coverage and tops at 5,000 feet; Scattered-to-broken at 14,000 feet with 4-5/8ths sky coverage and tops at 18,000 feet; and Broken at 26,000 feet with 3-4/8ths sky coverage and tops at 29,000 feet Visibility: 7 miles Launch Pad Winds: Southeasterly from 140 degrees at 8 gusting to 12 knots Temperature: 72 degrees F Relative Humidity: 70 percent Weather: Isolated showers Solar Weather Activity: Low Probability of Violating Weather Constraints: 30 percent Concerns: Layered clouds and precipitation aloft

24- and 48-hour Delay Forecasts

Monday's Probability of Violating Constraints: 40 percent Concerns: Layered clouds, precipitation aloft and thunderstorm/anvils Tuesday's Probability of Violating Constraints: 60 percent Concerns: Showers, layered clouds and thunderstorm/anvils