A cold front is expected to move quickly through Oklahoma by mid-afternoon today bringing gusty northerly winds and much cooler air. Daytime temperatures are likely to slowly fall, and afternoon highs should be in 20 to 30 degrees lower than those on Tuesday, dropping into the 30s and 40s, according to the National Weather Service .

Northerly winds of 20 to 30 mph are expected and frequent gusts over 40 mph will...