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Starlink L-18 - L-3 Days

Falcon 9

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Valid Period

Feb 4, 2021 06:09 - 06:30 UTC (01:09 - 01:30 ET)

Issued

Mon Feb 1, 2021 at 13:30 UTC (08:30 ET)

Forecast Discussion

Space Launch Delta 45

A significant change is in store for Central Florida’s weather today as cold air rushes in behind the cold front that passed this morning, aided by a digging upper level trough. Humidity levels will take a nosedive today as temperatures remain steady, then plummet along the Space Coast overnight. A strong low pressure system off the Carolina coast will slowly meander northward to the mid-Atlantic, and then New England by Wednesday. This slow motion will maintain a tight pressure gradient across the Spaceport, keeping sustained winds out of the northwest in the 20-30 mph range. Clouds will gradually decrease in coverage across the Spaceport today, but moisture wrapping around the low off the Carolinas will keep a stratocumulus deck in place into Tuesday. Pleasant conditions are expected mid-week as the low pressure system accelerates farther north, loosening its grip on our local weather. Expect mostly clear skies with winds decreasing gradually as high pressure builds in. Conditions will be ideal for launch early Thursday morning with only a very slight concern for liftoff winds if the low pressure area moves out slower than forecast. On Thursday, the high pressure area slides east, creating southeast winds along the Space Coast. This generates a slight chance for a cumulus cloud violation with Gulf Stream showers early Friday morning.

Primary Launch Date

Launch Day

Primary Window

91%
PGO

Primary Concerns

  • Liftoff Winds

Additional Risk Criteria

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

Backup Opportunities

24-Hour Delay

Backup Window

90%
PGO

Primary Concerns

  • Cumulus Cloud Rule

Additional Risk Criteria

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