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CST-100 OFT-2 - L-3 Days

Atlas V

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Valid Period

Aug 3, 2021 17:10 - 17:30 UTC (13:10 - 13:30 ET)

Issued

Sat Jul 31, 2021 at 13:00 UTC (09:00 ET)

Forecast Discussion

Space Launch Delta 45

No change to the forecast reasoning. An extended period of southwest steering flow is expected over the next week, which typically favors the eastern half of the peninsula for afternoon showers and thunderstorms. While coverage is forecast to be a bit less this weekend, precipitation chances are expected to increase again next week as a mid- and upper-level trough develops over the eastern U.S. Given the pattern on Tuesday, the greatest coverage of convection is expected to hold off until after the launch window. Still, a weather-related violation is possible due to isolated showers and thunderstorms in the area, particularly towards the end of the count. The primary concerns at this time are the Cumulus Cloud, Surface Electric Fields, and Lightning Rules.

Primary Launch Date

Launch Day

Primary Window

60%
PGO

Primary Concerns

  • Cumulus Cloud Rule
  • Surface Electric Fields Rule
  • Lightning Rule

Additional Risk Criteria

CriteriaRisk Level
Upper-Level Wind ShearN/A
Booster Recovery WeatherN/A
Solar ActivityLow