I've only tested this in Eureka Pyros, but if you speak to the Expedition Skywatcher while the Umbral Wind weather condition is active, the resulting text is grammatically incorrect:

At the moment, this region of the isle is experiencing intriguingly experiencing umbral wind atmospheric conditions. Looking forward, anticipate riveting heat waves and somewhat average—but still captivating—blizzards in turn.
There are two occurrences of "experiencing" when there should only be one - likely the first.