Forecast for Thursday, April 10

Issued: Thursday, April 10 Launch Weather Officer: Jim Sardonia, 45th Weather Squadron Synoptic Discussion: "Winds will be gusty today as the late season cold front that moved through last night has setup a strong pressure gradient over the entire Florida peninsula. Currently, peak winds at SLC 36 have been averaging between 22-26 knots with a few isolated peaks as high as 29 knots. These peaks may increase slightly (2-3 knots) prior to Tower roll operations, but are expected to decrease as sunset approaches. "Winds will remain gusty throughout fueling operations and the launch window, however they are expected to be below the launch constraint (25 knots if winds are between 275-090 degrees, 28 knots if winds are 091-274 degrees) during the launch window. "The main concern today will be the chance of peak winds at the 90ft level at SLC 36B greater than the 25 / 28 knot launch constraint." Clouds: Scattered cumulus at 3,000 feet with 2/8ths sky coverage and tops at 6,000 feet; Scattered cirrus at 25,000 feet with 3/8ths sky coverage and tops at 26,000 feet Visibility: 7 miles Launch Pad Winds: Westerly from 270 degrees at 14 gusting to 24 knots (as measured at 90 foot tower) Temperature: 59 to 61 degrees F Relative Humidity: 65 percent Weather: None Solar Activity: Low Probability of Violating Weather Constraints: 30 percent Concerns: Winds greater than 25 knots

Forecast for Friday and Saturday

Friday's Probability of Violating Constraints: < 10 percent Concerns: Slight chance of winds greater than 25 knots Saturday's Probability of Violating Constraints: < 10 percent Concerns: Cumulus clouds