Area Forecast Discussion
Issued by NWS Boise, ID
Issued by NWS Boise, ID
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. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.twitter.com/NWSBoise DISCUSSION...KA AVIATION.....JM SHORT TERM...BW LONG TERM....BW