yee@trident.arc.nasa.gov (Peter E. Yee) (04/22/91)
TO: PIOZ/PRESS
FROM: George Diller/NASA-KSC
407-867-2468/FTS 823-2468
Launch Complex 39
L-5 Day Weather Forecast for STS-39
Conditions expected on Tuesday, 4/23/91
Synopsis: A cold front will be located in the western Gulf of
Mexico bringing Southwesterly winds. Moisture flowing over land
from the Gulf will create the possibility of low cloud ceilings.
At 7:05 a.m. on Tuesday morning conditions are forecast to be:
Clouds: 800 to 1,000 broken stratus
10,000 to 11,000 scattered altocumulus
28,000 to 31,000 scattered cirrus
Visibility: 7+ miles
Wind - Pad 39A: SW at 10-15 knots
Temperature: 76 degrees
Dewpoint: 71 degrees
Humidity: 84%
Precipitation: None expected
Probability of launch weather criteria violation at the beginning
of the launch period: 50%
Probability of launch weather criteria violation over the
duration of the launch period: 30%
Probability of tanking constraint violation: 5%
Chance of violation at launch time on Wednesday: 50%
Thursday : 50%
Developed by Cape Canaveral Forecast Facility
USAF Air Weather Service
4/19/91