Area Forecast Discussion
Issued by NWS Pocatello, ID
Issued by NWS Pocatello, ID
737 FXUS65 KPIH 010742 AFDPIH Area Forecast Discussion National Weather Service Pocatello ID 142 AM MDT Tue Oct 1 2024 .DISCUSSION...The coldest conditions of the week will occur during the overnight hours tonight and tomorrow morning. A Frost Advisory is in effect from 3 AM to 9 AM this morning for the Snake Plain and Arco Desert/Mud Lake area due to widespread low temperatures spanning the 30s and isolated areas even dropping to around freezing. Temperatures will rebound during the day with most locations rising back into the 70s. Upper flow will turn zonal and strengthen on Wednesday as a result of a system passing to our north, with the only impact for Southeast Idaho being breezy surface conditions, mostly across the Snake Plain and eastern Magic Valley. Sustained southwest winds over the American Falls Reservoir Wednesday afternoon could briefly reach low-end Lake Wind Advisory criteria, to around 20 mph, but forecast duration and magnitudes do not justify an Advisory at this time. 500 mb ensemble clusters continue to show high confidence that the upper level pattern will persist into next week with any passing systems remaining further north and temperatures consistently around 5 to 10 degrees above climatological norms under weak ridging and mostly clear skies. Cropp && .AVIATION...VFR conditions will persist as high pressure supports dry conditions through late week and likely into next week. Expect FEW high clouds each afternoon. A passing trough to our north on Wednesday will result in breezy winds across the Snake Plain and eastern Magic Valley, generally 25 kts or less. Cropp && .FIRE WEATHER...Dry weather will continue into the weekend. Light winds are expected today. A dry front will arrive on Wednesday and we will see see gusty winds Wednesday afternoon. Near red flag conditions are possible Wednesday afternoon with humidities expected to be in the mid to upper teens with gusts of 20 to 25 mph likely. 13 && .PIH WATCHES/WARNINGS/ADVISORIES... Frost Advisory until 9 AM MDT this morning for IDZ052>054. && $$