A COLD FRONT WILL PUSH SOUTH THROUGH NATRONA COUNTY LATE THIS AFTERNOON. TEMPERATURES BEHIND THE FRONT WILL DROP 15 TO 20 DEGREES IN 15 MINUTES. THE FRONT IS EXPECTED TO REACH CASPER BETWEEN 430 AND 500 PM WITH TEMPERATURES QUICKLY DROPPING FROM AROUND 40 INTO THE 20S. SOUTHWEST WIND WILL ABRUPTLY SWITCH TO THE NORTH AND BLOW AT 20 TO 30 MPH FOR A FEW HOURS.