Eastern Range Launch Weather Forecast Issued: 1 April 2002 Valid: 4 April 2002 Vehicle/Payload: STS-110 (Atlantis)/ISS 8A Location: CX 39B Launch Weather Officer: Kathy Winters Synoptic Discussion: Cold front will be located in the northern portion of the Florida peninsula moving SE. Result is southwest flow, significant moisture, and warm temperatures for tanking and launch weather. Warm temperatures will also generate a sea breeze for the afternoon causing rainshowers and thunderstorms. Clouds Coverage Bases (feet) Tops (feet) CUMULUS 3/8 SCT 3000 6000 ALTOCUMULUS 3/8 SCT 12000 16000 CIRRUS 3/8 SCT 25000 27000 Visibility: 7 Wind: 140010 P 15 kt (60 foot pad winds) Temperature: 77 F RH: 76% Dewpoint: 69 F Weather: RAINSHOWERS/TSTMS VICINITY Probability of KSC weather prohibiting launch: 40% Probability of KSC weather prohibiting Tanking: 10% Primary concern(s): Low cloud ceilings, thick clouds, precipitation, Thunderstorms, anvils. Probability of KSC weather prohibiting launch for 24 hour delay: 20% Probability of KSC weather prohibiting Tanking: 0% Primary concern(s): Low cloud ceilings. Probability of KSC weather prohibiting launch for 48 hour delay: 10% Probability of KSC weather prohibiting Tanking: 0% Primary concern(s): Low cloud ceilings. Sunrise: 4 April 0610 EST Moonrise: 4 April 0115 EST Illumination: 55% Sunset: 4 April 1843 EST Moonset: 4 April 1140 EST