Live weather from the future -- possible time zone issue?

Looking at weather in the gulf coast now:

Circa UTC 12:50 at Houston, Texas.

METAR for KIAH shows clouds “few 2000’” and “broken 19,000’, broken 22,000’”; enhanced satellite imagery as shown in ForeFlight shows no major cloud cover at Houston:

Cloud predictions for 12:00 UTC (~1 hour in past) match; bits of clouds but not a lot:

Cloud predictions for 18:00 UTC (~5 hours in future) show heavy cloud cover having rolled in:

MSFS world map matches the future prediction:

MSFS live weather in sim matches the future prediction:

Current time zone settings on my computer, showing correct Pacific time:

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