Learn Hardcore German: Bei Sturm fahren wir besonders vorsichtig. - During a storm we drive especially carefully.

With certain prepositional phrases that express general conditions (especially weather), German often drops the article. Bei Sturm literally means “in stormy conditions” or “in case of storm.” If you want to refer to a specific storm, you could say bei einem Sturm or im Sturm (using an article).

What case does Sturm take after bei, and why?

The preposition bei always governs the dative case. In standard grammar you’d expect dem Sturm, but in these bare‐noun idioms the article is omitted while the noun remains understood in the dative.

Why is the verb fahren in the second position, even though the sentence starts with Bei Sturm?

German is a V2‐language: the finite verb must occupy the second “slot.” Here Bei Sturm fills the first slot (an adverbial of condition), so fahren comes next, and the subject wir follows.

What is the role of besonders vorsichtig in this sentence?

Besonders vorsichtig is an adverbial phrase modifying how we drive. Besonders (“especially” or “particularly”) intensifies the manner, and vorsichtig (“carefully”) describes the way of driving. Together they tell you “especially carefully.”

Why doesn’t vorsichtig get any adjective endings here?

When an adjective is used to modify a verb (i.e., as an adverb), it is not declined. Only adjectives that directly modify nouns receive endings.

Could you rewrite the sentence as Wir fahren bei Sturm besonders vorsichtig? Would that change the meaning?

Yes, that sentence is perfectly correct. Placing Wir first gives a neutral S‑V‑O word order. Emphasis shifts slightly: leading with Bei Sturm highlights the condition, whereas Wir fahren first stresses the subject and action.

What’s the difference between bei Sturm and im Sturm?

Bei Sturm means “in stormy conditions” in general or “when there is a storm.” Im Sturm (a contraction of in dem Sturm) usually refers to “during a specific storm.” The first is idiomatic for conditions; the second is locative or temporal for an actual storm event.