Maybe it has something to do with unreliable DOT warnings.
In 2011, we were in Bakersfield, CA planning to go over the Tehachapi Pass on CA 58. The CA DOT issued a warning about high winds and recommended against high profile vehicles on 58. The morning local news talked about the high wind warning, and it was windy in Bakersfield. We decided to stay in Bakersfield an extra day to avoid the winds.
Fast forward to the morning of Jan 1st, 2019 when we were once again in Bakersfield getting ready to go over the pass. I checked the DOT website and it warned of high winds expected and recommended no high profile vehicles. The same warning applied to the Grapevine so I had no wind-free route available except to go to the coast and pickup 101. Way out of the way.
There was no mention of a high wind warning on the local news, and barely a breeze in Bakersfield. We decided to go for it, and encountered no more than 5 mph winds.
I really think that the DOT just made a mistake, especially in not posting a time frame for the expected high winds. (Maybe it was windy later in the day. I know there were severe winds much closer to LA.)
I'll continue to check road conditions before travelling, but I will cross-check sources rather than rely only on the DOT.