510
FNUS75 KBOI 151959
FWSBOI

Spot Forecast for Flatt...IDL
National Weather Service Boise ID
159 PM MDT Thu Aug 15 2024

Forecast is based on forecast start time of 1400 MDT on August 15.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office at (208)334-9060, if you have questions
or concerns with this forecast.

...ISOLATED THUNDERSTORMS TODAY, MAINLY EAST OF INCIDENT...
...HOT, DRY, AND VERY UNSTABLE SATURDAY AFTERNOON...
...STAYING HOT AND DRY SUNDAY THROUGH AT LEAST EARLY NEXT WEEK...

.DISCUSSION...
Isolated thunderstorms today as an upper low moves through.
Convective initiation should stay to the east, but a stray storm
may wander near the incident. As an upper low sets up to our
northwest and an upper high to our southeast tomorrow, hot and dry
conditions are forecast. Friday stays moderate as the hot and dry
flow will begin setting up. Max temperatures increase by 10
degrees Saturday, and RHs below 30% are favored. Saturday may also
be especially unstable, with Haines 6 creeping into the forecast.
We stay lodged between the low and the high through the 7 day
forecast, which will favor hot and dry conditions continuing.


.REST OF TODAY...

Sky/weather.........Mostly cloudy with numerous showers and
                    scattered thunderstorms. Some thunderstorms may
                    produce gusty winds. Chance of precipitation 70
                    percent.
Max temperature.....70 to 76.
Min humidity........26 to 31 percent.
CWR.................40 percent.
LAL.................4.
Wind - 20 foot......West 4 to 8 mph with gusts to around 14 mph.
                    Gusty and erratic winds expected near
                    thunderstorms.
Mixing height.......8500 ft AGL.
Transport winds.....Southwest around 15 mph.
Haines Index........4 low.
Ventilation Index...1275 excellent.

.TONIGHT...

Sky/weather.........Mostly cloudy with scattered showers and
                    thunderstorms in the evening. Some
                    thunderstorms may produce gusty winds in the
                    evening. Chance of precipitation 30 percent.
Min temperature.....49 to 54.
Max humidity........62 to 67 percent.
CWR.................10 percent.
LAL.................4 in the evening decreasing to 1 overnight.
Wind - 20 foot......Northwest 3 to 6 mph in the evening shifting to
                    the east 3 to 5 mph overnight. Gusty and
                    erratic winds expected near thunderstorms in
                    the evening.
Mixing height.......200 ft AGL.
Transport winds.....Northeast around 0 mph.
Haines Index........3 very low.
Ventilation Index...0 poor.

.FRIDAY...

Sky/weather.........Sunny.
Max temperature.....71 to 77.
Min humidity........27 to 32 percent.
CWR.................0 percent.
LAL.................1.
Wind - 20 foot......South 3 to 6 mph.
Mixing height.......9000 ft AGL.
Transport winds.....Southwest around 15 mph.
Haines Index........3 very low.
Ventilation Index...1350 excellent.

$$
Forecaster...Macfarlane
Requested by...Hailey Frank
Type of request...WILDFIRE
.TAG 2420339.0/BOI
.DELDT 08/15/24
.FormatterVersion 2.0.0
.EMAIL hfrank@idl.idaho.gov