Back to Forecasts

ViaSat-3.1 - L-1 Day

Falcon Heavy

View PDF

Valid Period

Apr 26, 2023 23:24 - 00:31 UTC (19:24 - 20:31 ET)

Issued

Tue Apr 25, 2023 at 12:45 UTC (08:45 ET)

Forecast Discussion

Space Launch Delta 45

Significant shifts in the models over the past 24 hours have led to a quieter forecast for the primary and backup launch windows. Today, the area will be in between upper-level systems, resulting in slightly lower storm chances than yesterday. However, nevertheless expect at least scattered showers and storms to develop by late morning across the Spaceport aided by the sea breeze and weak front stalled just to the north. This activity will shift south of the area by this evening as the front sags south. The next upper-level disturbance is still forecast to swing through the state on Wednesday, however with the boundary potentially a little further south and an inverted surface trough along the coast, the Spaceport looks to see stronger east-northeast steering flow during the day. This will shift coverage of afternoon and evening showers and storms much further inland as compared to previous forecasts, necessitating the lower POV. The main weather concerns for a Wednesday evening launch have shifted to anvil clouds associated with ongoing convection to the west as well as any lingering cumulus clouds. The approach of the next upper-level trough continues to be delayed more into Friday, with the old boundary retreating to the north of the area. Thursday will look closer to a typical summer day with warm and breezy southeasterly flow and late morning to early afternoon storm development along the sea breeze. Activity will once again shift well inland by the backup launch window Thursday evening, with trailing anvil clouds and lingering cumulus the main concerns.

Primary Launch Date

Launch Day

Primary Window

60%
PGO

Primary Concerns

  • Anvil Cloud Rules
  • Cumulus Cloud Rule

Additional Risk Criteria

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

Backup Opportunities

24-Hour Delay

Backup Window

60%
PGO

Primary Concerns

  • Anvil Cloud Rules
  • Cumulus Cloud Rule

Additional Risk Criteria

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