For full context:
<https://www3.nhk.or.jp/news/html/20180306/k10011353421000.html?utm_int=news_contents_news-
main_001>

The sentence in question:
新燃岳で爆発的な噴火が起きたのは、７年前の平成２３年以来で、気象庁は、噴火警戒レベル３を継続し、大きな噴石や火砕流に警戒する **よう**
呼びかけています。

I would translate the part surrounding よう as "...they called out that one
shall pay attention to great cinders and pyroclastic flow." But I never saw よう
used in this way.
CC BY-SA 3.0
2018-03-09T08:29:38.530
57180
2018-03-13T10:45:39.330
20172
question
grammar
What is this よう doing behind the verb?
without よう it's incomplete. よう used to connect two parts of sentence like "to"
in English, in "asked to do" form.
CC BY-SA 3.0
2018-03-13T10:45:39.330
57247
2018-03-13T10:45:39.330
22131
57180
answer