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KA-06 - L-1 Day

Atlas V

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Valid Period

Apr 26, 2026 00:52 - 01:21 UTC (20:52 - 21:21 ET)

Issued

Sun Apr 26, 2026 at 13:30 UTC (09:30 ET)

Forecast Discussion

Space Launch Delta 45

Forecast Discussion: A Carolina Low is expected to push a weak back door cold front through central Florida early Monday morning. Although it will be breezy Monday afternoon, dry air behind the front should suppress thunderstorm development over Central Florida. By the time the primary window opens, low-level onshore flow could bring isolated showers to the Cape, but most shower activity is expected to be no worse than a flight through concern. By the backup day, onshore flow associated with high pressure to the north should bring generally favorable conditions and the primary concern will be brief periods of flight-through Cumulus Cloud Rule violations.

Primary Launch Date

Launch Day

Primary Window

85%
PGO

Primary Concerns

  • Cumulus Cloud Rule

Additional Risk Criteria

CriteriaRisk Level
Solar ActivityLow

Backup Opportunities

24-Hour Delay

Backup Window

90%
PGO

Primary Concerns

  • Cumulus Cloud Rule

Additional Risk Criteria

CriteriaRisk Level
Solar ActivityLow