CRS-21 - L-1 Day
Falcon 9
Valid Period
Dec 5, 2020 16:34 - 16:45 UTC (11:34 - 11:45 ET)
Issued
Fri Dec 4, 2020 at 13:00 UTC (08:00 ET)
Forecast Discussion
Expect increasing cloud and shower coverage today and tonight as a low pressure system along the Central Gulf Coast slides into the Deep South. A weakening cold front is expected to push through Central Florida prior to the launch window Saturday, with most of the associated rainfall impacting the Spaceport Friday night and early Saturday morning. However, a measure of cloud cover may linger behind the front across Central Florida during the launch window. Primary weather concerns during the launch window will be the Cumulus Cloud Rule, and Thick Cloud Layer Rule. Behind the departing front, weak high pressure will move over Florida, maintaining mostly dry conditions across north and central portions of the state. However, a weak low pressure system will develop across the Central Gulf, which will potentially send an influx of mid-level clouds across the state Sunday. The primary weather concerns during the backup launch window will be the Thick Cloud Layer Rule and Cumulus Cloud Rule.
Primary Launch Date
Primary Window
Primary Concerns
- Cumulus Cloud Rule
- Thick Cloud Layer Rule
Additional Risk Criteria
| Criteria | Risk Level |
|---|---|
| Upper-Level Wind Shear | Moderate |
| Booster Recovery Weather | High |
| Solar Activity | Low |
Backup Opportunities
Backup Window
Primary Concerns
- Thick Cloud Layer Rule
- Cumulus Cloud Rule
Additional Risk Criteria
| Criteria | Risk Level |
|---|---|
| Upper-Level Wind Shear | Moderate |
| Booster Recovery Weather | Low |
| Solar Activity | Low |