There were/are earthquakes in many countries in the world in the past few days.
If earthquake is a form punishment from Hashem, then which sins are punished by such?
I/We can use the answer to specifically pray for Teshuvah.
"Why assume that specific natural disasters correspond to particular sins?"
There are passages in the TaNaKH about famine or drought, etc., being associated with sins, such as Amos 4:7-8
וְגַם אָנֹכִי מָנַעְתִּי מִכֶּם אֶת-הַגֶּשֶׁם, בְּעוֹד שְׁלֹשָׁה חֳדָשִׁים לַקָּצִיר, וְהִמְטַרְתִּי עַל-עִיר אֶחָת, וְעַל-עִיר אַחַת לֹא אַמְטִיר; חֶלְקָה אַחַת תִּמָּטֵר, וְחֶלְקָה אֲשֶׁר-לֹא-תַמְטִיר עָלֶיהָ תִּיבָשׁ.
וְנָעוּ שְׁתַּיִם שָׁלֹשׁ עָרִים אֶל-עִיר אַחַת, לִשְׁתּוֹת מַיִם--וְלֹא יִשְׂבָּעוּ; וְלֹא-שַׁבְתֶּם עָדַי, נְאֻם-יְהוָה.
I was thinking that perhaps Earthquake is probably in the same line of idea.
Here is a discussion at Mi Yodea along a similar line: