021
FXUS65 KBOI 061550
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
950 AM MDT Sat Jul 6 2024

.DISCUSSION...A weak system will pass by to the north across
Montana, generating breezy conditions this afternoon. Northwest
winds of 10-20 mph with gusts up to 30 mph this afternoon. Then
an upper level ridge will expand over the western US bringing
hot temperatures for the remainder of the week. Temperatures
will approach record values from Tuesday through Thursday. No
updates.

&&

.AVIATION...VFR and mostly clear. High density altitude due to hot
daytime temperatures. Surface winds: variable less than 10 kt
becoming W to NW 10-20 kt with 20-30 kt gusts after 18Z. Winds aloft
at 10kft MSL: NW 15-25 kt.

KBOI...VFR and clear. High density altitude due to hot daytime
temperatures. Light SE winds turning to NW 9-14 kt with gusts 18-23
kt later this morning and lasting through the day.

Sunday Outlook...VFR and clear. High density altitude. Variable
winds 10 kt or less in the morning, then NW 5-15 kt in the
afternoon.

&&

.PREV DISCUSSION...
SHORT TERM...Today through Monday night...Hottest temperatures
this weekend coincide with the upper ridge over Oregon. Record
and near-record highs are forecast for some locations in
southeast Oregon, including Baker and Burns. A Heat Advisory is
in effect for most of southeast Oregon. The passage of an upper
trough in the northern Rockies will enhance the winds across our
area this afternoon with gusts of 25-35 mph. The ridge edges
closer on Monday, spreading the heat into southwest Idaho which
will likely be the first day of many for several high temperatures
meeting or exceeding 100 degrees in the valleys. An Excessive
Heat Watch remains in effect for all of SE Oregon and most of SW
Idaho.

LONG TERM...Tuesday through Saturday...Multi-day 100+ high
temperatures are forecast throughout the week with the strong
upper ridge dominating across the region. An Excessive Heat
Watch remains in effect for all of southeast Oregon and
southwest Idaho. Dry conditions prevail, although models
continue to hint at some increasing high-level moisture later
in the week...but not enough to warrant any showers or
thunderstorms at this time.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...Excessive Heat Watch from Tuesday afternoon through Friday
     evening IDZ011-013-028.
     Excessive Heat Watch from Monday afternoon through Friday
     evening IDZ012-014>016-029-030-033.
     Red Flag Warning from 3 PM this afternoon to 9 PM MDT this
     evening IDZ424-426.
OR...Excessive Heat Watch from Monday afternoon through Friday
     evening ORZ061>064.
     Red Flag Warning from 3 PM MDT /2 PM PDT/ this afternoon to 9
     PM MDT /8 PM PDT/ this evening ORZ636-637.
     Heat Advisory until noon MDT /11 AM PDT/ Monday ORZ061-063-064.

&&

$$

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DISCUSSION...KA
AVIATION.....JM
SHORT TERM...BW
LONG TERM....BW