Launch probabilities:
Thursday: 90 percent go
Friday: 90 percent go
Saturday: 90 percent go


Latest launch weather forecast

Source: Spaceflight Meteorology Group, Johnson Space Center; and 45th Space Wing Weather Squadron

ISSUED: April 19, 2001
VALID: April 19, 2001

Forecast for Thursday, April 19

Kennedy Space Center, Florida Winds: From 060 degrees at 9 knots with gusts to 14 knots Clouds: Few at 4,000 feet; Scattered at 25,000 feet Visibility: 7 miles Temperature: 72 degrees F Dewpoint: 48 degrees F Relative Humidity: 43 percent CONCERNS: Slight worry of crosswinds above limit at KSC's runway, which would be used in the event of a Return to Launch Site abort Edwards Air Force Base, California Winds: From 240 degrees at 20 knots with gusts to 30 knots Clouds: Few at 5,000 feet; Broken at 12,000 feet; Broken at 20,000 feet Rain: None Visibility: 7 miles CONCERNS: Headwind Northrup Strip/White Sands Space Harbor, New Mexico Winds: From 230 degrees at 16 knots with gusts to 26 knots Clouds: Scattered at 20,000 feet; Broken at 20,000 feet Rain: None Visibility: 7 miles CONCERNS: None Zaragoza, Spain Winds: From 310 degrees at 20 knots with gusts to 30 knots Clouds: Scattered at 4,000; Broken at 8,000 feet Rain: None Visibility: 7 miles CONCERNS: Headwind Moron, Spain Winds: From 250 degrees at 10 knots with gusts to 14 knots Clouds: Few at 5,000 feet; Scattered at 10,000 feet Rain: None Visibility: 7 miles CONCERNS: None Ben Guerir, Morocco Winds: From 330 degrees at 15 knots with gusts to 20 knots Clouds: Scattered at 3,000 feet; Broken at 20,000 feet Rain: None within 20 miles Visibility: 7 miles CONCERNS: None

Launch, Contingency and End-of-Mission Weather Flight Rules

Weather-related Launch Commit Criteria

Shuttle Launch and Landing Weather Links