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Starlink-L28 - L-1 Day

Falcon 9

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Valid Period

May 26, 2021 17:59 - 20:00 UTC (13:59 - 16:00 ET)

Issued

Tue May 25, 2021 at 11:00 UTC (07:00 ET)

Forecast Discussion

Space Launch Delta 45

Another great weather day expected across Central Florida as high pressure remains in control. Warm afternoons with partly cloudy skies will continue through the week with only very isolated showers. High temperatures will be in the mid to upper 80s along the Space Coast and over 90 F inland. A slight chance for a brief rain shower is possible over the Spaceport as the sea breeze pushes inland each day. For launch Wednesday, favorable conditions are expected with only a very slight chance of a cumulus cloud moving into the flight path at launch time. On Thursday, the high pressure ridge will begin to weaken, but remain strong enough to suppress convection though the launch window. The primary launch weather concern remains a low chance of a Cumulus Cloud Rule violation.

Primary Launch Date

Launch Day

Primary Window

90%
PGO

Primary Concerns

  • Cumulus Cloud Rule

Additional Risk Criteria

CriteriaRisk Level
Upper-Level Wind ShearLow
Booster Recovery WeatherLow
Solar ActivityLow

Backup Opportunities

24-Hour Delay

Backup Window

80%
PGO

Primary Concerns

  • Cumulus Cloud Rule

Additional Risk Criteria

CriteriaRisk Level
Upper-Level Wind ShearLow
Booster Recovery WeatherLow
Solar ActivityLow