NZUS95 KBYZ 240852
LLLBYZ
MTZ029>034-036-037-040-042-056>058-063>068-138-139-141-169>173-228-235-WYZ198-
199-242052-

Public Information Statement
National Weather Service Billings MT
252 AM MDT Thu Apr 24 2025

Saturday through Wednesday…

Southwest flow and warm conditions will persist Saturday and most of Sunday as a low moves 
onto the west coast. Precipitation  associated with this low moving through Nevada will bring
 an impressive amount of precipitation to the area. Thanks to good placement of upper level 
forcing and above average atmospheric moisture (150-200% above normal), much of south-central
 MT has a 30-60% chance of at least an inch of precipitation with the remainder of the region 
at a 15-30% chance Sunday and Monday. As far as snowfall, snow levels will not drop too much, 
so areas above 7,000-8,000 ft can expect to see snow. With northerly flow in place for this 
system, upsloping along the northern slopes can be expected. These areas have about a 50-80%
 chance of getting at least 8 inches of snow. Additionally, with increasing instability 
Saturday into Sunday there is an increased chance of thunderstorms associated with the 
frontal passage into Sunday evening. South-central and southeast MT will have the best 
chance of thunderstorms during this time with the NBM showing CAPE values of 500-800 J/kg.
 Pressure rises behind the frontal passage will allow for breezy conditions Monday with gusts
 into the 30s and 40s (mph) likely. Into Wednesday, ensembles want to bring in lowering 
heights to our northeast, but are in disagreement on just how far south to bring the forcing.