CASPER, Wyo. (AP) -- It's windy in Wyoming, but still. Gusts of 355 mph and more? That's what one electronic road sign said in Casper on Saturday. The Wyoming Department of Transportation says a sign operator working from Cheyenne meant to type "35+" but mistakenly added another 5. The Casper Star-Tribune reports (http://bit.ly/LU016c) the inflated wind gust message was posted for 17 minutes before the department noticed the mistake and corrected it. The whirlwind on social media lasted longer. One person posted a photo of the sign with the comment "CASPER WY. WHERE TORNADO ALLEY SEEMS PLEASANTLY BREEZY."