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Viasat 3F3 -

Falcon Heavy

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Valid Period

Apr 27, 2026 14:14 - 15:59 UTC (10:14 - 11:59 ET)

Issued

Sun Apr 26, 2026 at 13:00 UTC (09:00 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. With the primary window opening around the time the sea breeze will develop, the position of that frontal boundary will determine if clouds are enhanced over the Spaceport. The most likely impact for the primary window will be the Cumulus Cloud and Surface Electric Fields Rules. 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

70%
PGO

Primary Concerns

  • Cumulus Cloud Rule
  • Surface Electric Fields Rule

Additional Risk Criteria

CriteriaRisk Level
Booster Recovery WeatherLow
Solar ActivityLow

Backup Opportunities

24-Hour Delay

Backup Window

90%
PGO

Primary Concerns

  • Cumulus Cloud Rule

Additional Risk Criteria

CriteriaRisk Level
Booster Recovery WeatherLow
Solar ActivityLow