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The landscape was covered by snow in a flash and everything turned white.
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means blink and the verb vocab version is to blink.
Mah ta ta (またた) is showing, causing you to blink. I don't know what a "tata" is, but I bet you could come up with something that's blink-worthy.