<p>This is subject to the same dispute mentioned in the previous question regarding whether one is to think the words in his mind or verbalize them after wiping his hands.</p>
<hr class="shulchan-footnotes-sep"><section class="shulchan-footnotes"><div class="shulchan-footnotes-body"><ol><li id="shulchan-fn-1">According to the Taz 62:1; Admur 62:3 [See however Seder 13:17]; Michaber 62:4; and Poskim mentioned in the previous Q&amp;A one is to think the words in his mind. However, according to the Elya Raba 62:4 which argues on the Taz one is to clean his hands and then say the blessing. So rules also Piskeiy Teshuvos 4:32; See Piskeiy Teshuvos 227:8 <a class="shulchan-fn-back" href="#shulchan-fnref-1" aria-label="Back to text">↩</a></li></ol></div></section>

Shulchan Aruch HaRav | If one heard thunder or saw lightning, may he say the blessing prior to washing his hands?

This is subject to the same dispute mentioned in the previous question regarding whether one is to think the words in his mind or verbalize them after wiping his hands.