Spaceflight Now Home



Mission Briefing








NewsAlert



Sign up for our NewsAlert service and have the latest news in astronomy and space e-mailed direct to your desktop.

Enter your e-mail address:

Privacy note: your e-mail address will not be used for any other purpose.



Launch weather forecast
Posted: December 15, 2004

 Forecast for Friday, December 17

Issued: Wednesday, December 15
Launch Weather Officer: F. Clay Flinn, 45th Weather Squadron

Synoptic Discussion: "High pressure continues to dominate the Florida peninsula and should persist through the week. Tuesday's dry, cold frontal boundary reinforced the cold air from this weekend. Temperatures should moderate as winds will become from the Northeast on Thursday and Friday and trend toward Easterly flow. With East Northeasterly flow, we will likely have a low broken deck of clouds blowing in from the Atlantic with occasional light drizzle. A trough of lower pressure is expected to develop off the East Coast late Thursday through Friday and intensify on Saturday which may result in isolated coastal showers. This will increase the probability of violating weather constraints on Saturday.

"The main weather concern on launch day will be a nontransparent, thick cloud layer. These conditions persist into Saturday with the aforementioned disturbance off the Florida peninsula. Winds are not expected to approach ops constraints."

Clouds: Broken at 3,000 feet with 5/8ths sky coverage and tops at 6,000 feet; Broken at 10,000 feet with 5/8ths sky coverage and tops at 12,000 feet

Visibility: 10 miles

Launch Pad Winds: Northeasterly from 060 degrees at 12 gusting to 18 knots

Temperature: 58 degrees F

Dew Point: 54 degrees F

Relative Humidity: 90 percent

Weather: Mostly cloudy

Solar Activity: Low

Probability of Violating Weather Constraints: 30 percent

Concerns: Thick clouds

 

 Times of note

Friday's launch window: 4:41-7:21 a.m. EST (0941-1221 GMT)
Friday's sunrise: 7:08 a.m. EST (1208 GMT)

Saturday's launch window: 4:41-7:21 a.m. EST (0941-1221 GMT)
Saturday's sunrise: 7:09 a.m. EST (1209 GMT)

 

 Forecast for 24-hour delay

Saturday's Probability of Violating Constraints: 40 percent
Concerns: Thick clouds

 

MISSION STATUS CENTER