、。
It snowed, just as the forecast said.
Literal
Forecast-as predicted, snow [subject-が] fell.
~通り ('as, in accordance with') attaches directly to a noun to mean 'just as X.' 予報通り is a particularly tidy example — two characters for the topic (forecast), one for the relation (as). A useful pattern: 予想通り (as expected), 計画通り (as planned), いつも通り (as always).