Cloudy
Natrona County/Casper BLM
Fire Weather Watch
Issued by The National Weather Service.
Start time : . End time :ALERT
...HOT DRY WINDY AND UNSTABLE ON WEDNESDAY AHEAD OF A DRY COLD FRONTAL PASSAGE...
.SOUTHWEST FLOW WILL INCREASE AHEAD OF AN APPROACHING TROUGH ON WEDNESDAY. THE SOUTHWEST WIND WILL DRAW IN EXTREMELY DRY AIR FROM THE SOUTHWEST WITH MINIMUM RELATIVE HUMIDITIES BELOW 10 PERCENT ACROSS MUCH OF CENTRAL WYOMING. IN ADDITION... WINDS COULD ALSO GUST UP TO 45 MPH BY MID AFTERNOON. AS THE ATMOSPHERE BECOMES UNSTABLE DURING THE HEAT OF THE DAY...MIXING DOWN THE GUSTY WINDS AS WELL AS PRODUCING A HAINES INDEX OF 6...WHICH COULD ENCOURAGE ANY FIRES THAT DO START TO BECOME PLUME DOMINATED. THE APPROACHING TROUGH OR AREA OF LOW PRESSURE WILL SEND A DRY COLD FRONT ACROSS CENTRAL WYOMING LATER WEDNESDAY EVENING...MAINTAINING GUSTY WINDS WHILE SUDDENLY SWITCHING THE WIND DIRECTION TO THE WEST AND NORTHWEST. THE FRONT WILL OFFER NO PRECIPITATION...HOWEVER TEMPERATURES WILL DROP BEHIND THE COLD FRONT AND RELATIVE HUMIDITY WILL RECOVER ABOVE 40 PERCENT WEDNESDAY NIGHT.