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Lucy - L-3 Days

Atlas V

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Valid Period

Oct 16, 2021 09:34 - 10:49 UTC (05:34 - 06:49 ET)

Issued

Wed Oct 13, 2021 at 12:00 UTC (08:00 ET)

Forecast Discussion

Space Launch Delta 45

For MLP Roll day Thu, a surface high over the southeast will bring winds from the northeast up to 16kt during the day and a few light rain showers moving onshore. For exposure Fri, high pressure settles into the area bringing pleasant dry weather. For launch day on Sat, the surface high sits right over central FL with the mid-level ridge still over us. This brings continued pleasant weather and light winds with just a few Cumulus Clouds possible. For backup day on Sun, long range models are in agreement on a cool front moving through early Sun morning. With limited mid-level support and instability with this front, the main concerns will be showers and winds nearing liftoff constraints from the north immediately behind the front. Therefore, the primary concerns for the 24-hr backup day are the Cumulus Cloud Rule and Ground Winds. For the 48-hr backup day on Mon, the front stalls over south FL with high pressure building over the Carolina’s bringing a tighter pressure gradient and onshore moving showers. Therefore, the primary concerns for Monday are the Cumulus Cloud Rule and Ground Winds.

Primary Launch Date

Launch Day

Primary Window

90%
PGO

Primary Concerns

  • Cumulus Cloud Rule

Additional Risk Criteria

CriteriaRisk Level
Solar ActivityLow

Backup Opportunities

24-Hour Delay

Backup Window

50%
PGO

Primary Concerns

  • Cumulus Cloud Rule
  • Ground Winds

Additional Risk Criteria

CriteriaRisk Level
Solar ActivityLow
48-Hour Delay

Backup Window

60%
PGO

Primary Concerns

  • Cumulus Cloud Rule
  • Ground Winds

Additional Risk Criteria

CriteriaRisk Level
Solar ActivityLow