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KA-04 (Leo 4) - L-1 Day
Atlas V
Valid Period
Dec 16, 2025 08:28 - 08:57 UTC (03:28 - 03:57 ET)
Issued
Sun Dec 14, 2025 at 18:30 UTC (13:30 ET)
Forecast Discussion
Space Launch Delta 45
A cold front will move across the Spaceport this evening, followed by strong high pressure building from the Midwest to the Ohio Valley on Monday. The pressure gradient between the departing front and the high building in will create windy conditions across the Spaceport this evening through Monday. These winds will quickly diminish Monday afternoon into the evening, as high pressure builds across the Southeast, helping to create mostly favorable weather conditions during the primary and backup launch opportunities.
Primary Launch Date
Launch Day
Primary Window
85%
Primary Concerns
- Cumulus Cloud Rule
Additional Risk Criteria
| Criteria | Risk Level |
|---|---|
| Solar Activity | Low |
Backup Opportunities
24-Hour Delay
Backup Window
95%
Primary Concerns
- Cumulus Cloud Rule
Additional Risk Criteria
| Criteria | Risk Level |
|---|---|
| Solar Activity | Low |