L-3 day launch weather status – STS-109

Eastern Range Operation Forecast Op Number: F1443

Issued: 25 Feb 02/0700 EST Valid: 28 Feb 02/1148-1254 UTC

(28/0648-0754 EST)

45 Weather Squadron web site:
https://www.patrick.af.mil/45OG/45ws/

Vehicle/Payload: STS-109 (Columbia)/HST SM-03B

Location: CX 39A

Launch Weather Officer: Ed Priselac

Synoptic Discussion: Unseasonably cold temperatures expected Thursday,
following cold frontal passage Wednesday.

Clouds Coverage Bases (feet) Tops (feet)

STRATOCUMULUS 3/8 SCT 3000 4500

Visibility: 7

Wind: 32007 P 10 kt (60 foot pad winds)

Temperature: 40 F RH: 70% Dewpoint: 31 F

Weather: NIL

Probability of KSC weather prohibiting launch: 30%

Probability of KSC weather prohibiting Tanking: 0%

Primary concern(s): Cold Temperatures

Probability of KSC weather prohibiting launch for 24 hour delay:
20%

Probability of KSC weather prohibiting Tanking: 0%

Primary concern(s): Cold temperatures/Low cloud ceilings

Probability of KSC weather prohibiting launch for 48 hour delay:
70%

Probability of KSC weather prohibiting Tanking:
0%

Primary concern(s): Low cloud/thick cloud/showers/thunderstorms

Sunrise: 28 Feb 0649 EST Moonrise: 27 Feb 1856 EST

Illumination: 99%

Sunset: 28 Feb 1822 EST Moonset: 28 Feb 0757 EST

Next Forecast will be issued: 26 Feb 02/0700 EST