241
FXUS65 KPIH 300818
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
218 AM MDT Mon Sep 30 2024

.DISCUSSION...Winds remain breezy behind the frontal boundary
early this morning but will become noticeably lighter around
sunrise and trend variable and light heading into the afternoon
and evening hours. Today will be much cooler behind the cold
front, with forecast highs 15 to 20 degrees cooler than observed
temperatures yesterday. This will mean widespread seasonably cool
temps maxing out in the 60s or lower for most of the region. The
coldest conditions of the week will occur during the
overnight/early morning hours heading into Tuesday. Widespread
lows will run in the 30s and Frost/Freeze products are anticipated
for our agricultural zones during this timeframe. Confidence
continues to increase in temperatures dropping into frost/freeze
range, with the National Blend now carrying around a 60% to 90%
probability of temperatures 36 degrees or colder across our
growing zones. The chances of freezing temperatures is much lower
and spatially limited, with around a 15% chance across all
growing zones and isolated pockets to around 60% probability
across the lower and upper Snake Plain. Temperatures will rebound
during the day Tuesday, returning to near climatological norms
through late week under weak ridging and mostly clear skies. There
is consensus now amongst 500 mb ensemble clusters that high
pressure will keep any systems to our north and support a
continuation of dry conditions into the weekend timeframe. Cropp


&&

.AVIATION...Winds remain breezy at KPIH, KIDA, and KBYI behind
the frontal boundary, with gusts of 20 to 30 kts still. Winds
will diminish to around 10 kts or less by 12z, give or take a
couple hours, and will trend variable and light heading into the
afternoon and evening hours today. VFR conditions will persist as
high pressure supports dry conditions through the remainder of the
week. Cropp


&&

.FIRE WEATHER...A few isolated spots with gusts to 20 mph remain
this morning. Otherwise, lighter winds should arrive for most areas
by late morning and afternoon. Dry weather should continue through
the week. Wednesday looks like it could be breezy once again as
another weak system works through. 13


&&

.PIH WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$