Forecast for Monday, May 12

Issued: Monday, May 12 Launch Weather Officer: Jim Sardonia, 45th Weather Squadron Synoptic Discussion: "Hot and humid conditions will persist today with highs in the lower 90's. Currently, the old frontal boundary discussed in earlier forecasts is located in north-central Florida as expected. This boundary is producing enhanced Cumulus clouds, a few rainshowers and one or two thunderstorms on the western portion of the line (125 nautical miles from Cape Canaveral). Anvil clouds from these thunderstorms are streaming quickly to the east coast of FL. The entire boundary is slowing moving south, therefore there continues to be a chance of enhanced Cumulus Clouds and Anvil Clouds within 10 nautical miles of SLC 41 during the launch window as this boundary drifts south. An easterly sea breeze is expected at the launch pad, but it is not expected to push very far inland, therefore any Cumulus Clouds forming along the sea breeze may be within 10 nautical miles of SLC 41 as well. "In the event of a 24 hr delay, conditions appear to improve with only a slight concern for Cumulus Clouds. "The main concerns for Launch Day is the chance of enhanced Cumulus clouds and Anvil Clouds within 10 nautical miles of SLC 41." Clouds: Scattered Cumulus at 3,000 feet with 3/8ths sky coverage and tops at 8,000 feet; Scattered Cirrus at 24,000 feet with 3/8ths sky coverage and tops at 26,000 feet Visibility: 7 miles or better Launch Pad Winds: Southeasterly from 140 degrees at 10 gusting to 18 knots (as measured at 230 feet) Temperature: 83 to 85 degrees F Relative Humidity: 80 percent Weather: Isolated Rainshowers inland Solar Activity: Low Probability of Violating Weather Constraints: 20 percent Concerns: Chance of Enhanced Cumulus Clouds and Anvil Clouds within 10 nautical miles

Forecast for Tuesday and Wednesday

Tuesday's Probability of Violating Constraints: 10 percent Concerns: Chance of Enhanced Cumulus Clouds within 10 nautical miles Wednesday's Probability of Violating Constraints: 20 percent Concerns: Chance of Enhanced Cumulus Clouds within 10 nautical miles