Forecast for Monday, April 14

Issued: Thursday, April 10 Launch Weather Officer: 45th Weather Squadron Synoptic Discussion: "High pressure and fair weather will persist into mid-day Saturday. A cold front will move into the Florida peninsula on Saturday and over Central Florida Sunday morning. There is a small threat of lightning associated with the frontal boundary through Sunday afternoon. Winds become gusty from the West and Northwest behind the front Sunday afternoon through mid-day Tuesday with gusts in the upper 20s to low 30s (230 feet). "For MLP roll on Sunday morning, winds are expected to be below the roll constraint of 32 knots (contamination). However, during the day, winds are expected to increase with gusts exceeding the standby configuration (27 knots) during the exposure period. "For launch day, high pressure continues to build-in with gusty Northwest winds beginning to trend down by late afternoon and marginally below the liftoff constraint (29 knots). The primary concerns for launch day are gusty winds and a slight risk of thick clouds associated with the proximity of the front to the South. "In the event of a 24 hour delay, high pressure continues to build-in with gusty winds overnight and trending down during the afternoon hours and increasing again on Wednesday. There is a small threat of a thick cloud rule violation." Clouds: Cumulus scattered at 4,000 feet with tops at 7,000 feet; and Cirrus scattered at 30,000 feet with tops at 35,000 feet Visibility: 7 miles Launch Pad Winds: Northwesterly from 300 degrees at 22 to 28 knots Temperature: 60-62 degrees F Relative Humidity: 60 percent Solar Activity: Low Probability of Violating Weather Constraints: 40 percent Concerns: Ground winds and thick clouds

Forecast for 24-hour delay

Tuesday's Probability of Violating Constraints: 30 percent Concerns: Ground winds and thick clouds

Times of note

Monday's launch window: 4:12 to 5:12 p.m. EDT Tuesday's launch window: 4:08 to 5:08 p.m. EDT