textproduct: Boise

UPDATE

Updated aviation discussion.

KEY MESSAGES

- Isolated thunderstorms south of Twin Falls this afternoon and Friday afternoon.

- Gusty winds through Baker City to Ontario corridor each evening.

- Dry through the weekend, with a chance of thunderstorms returning Monday area wide. - Steady warming trend into the weekend, with the hottest temperatures expected Sunday through Wednesday.

SHORT TERM /Through Saturday Night/

Issued 239 PM MDT THU JUL 2 2026 A ridge will continue to build into the region with a warming and drying trend, with southwest flow aloft. Isolated thunderstorms possible along the NV border on Friday afternoon. Southwest flow aloft will bring gusty southwest winds during the afternoons on the ridgetops. Pressure gradients between the Columbia Basin and Snake Basin will develop each evening and bring breezy north-northwest winds along the I-84 corridor between Baker City and Ontario. Wind gusts up to 35-45 mph possible in these areas.

LONG TERM /Sunday through Thursday/

Issued 239 PM MDT THU JUL 2 2026 Heat will stick around throughout the long-term period as a result of a building high pressure aloft over the Four Corners region. Valley temperatures will be in the mid to upper-90s throughout the week next week (5-10 degrees above normal). A low off of the Alaskan Panhandle will keep our area under southwest flow aloft keeping the hottest temperatures to our south. A push of monsoonal moisture will give way to risk of thunderstorms beginning Monday through Wednesday. A shortwave Monday will also help enhance thunderstorm development Monday afternoon, details should become better resolved in the forecasts to come.

AVIATION /00Z Friday through Saturday/

Issued 528 PM MDT THU JUL 2 2026 VFR with incoming high clouds from west. Isolated thunderstorms this evening near the ID/NV border and east of KTWF/KJER, diminishing after sunset. Surface winds: W-NW 7-15 kt this evening, then light and variable overnight, except N-NW 10-15 kt with gusts up to 20 kt near KBKE and KONO tonight through Friday early morning. Winds aloft at 10kft MSL: W-SW 5-15 kt.

KBOI...VFR with few to scattered high clouds this evening. Surface winds: NW 7-12 kt, with occasional gusts around 18 kt this evening, then light and variable overnight.

Weekend Outlook...VFR with dry conditions and intermittent mid- high clouds. High density altitudes in afternoons due to heat. Surface winds W-NW 5-15 kt Sat/Sun afternoons, light and variable overnights and mornings.

BOI WATCHES/WARNINGS/ADVISORIES

ID...None.

OR...None.