Scientific Forecaster Discussion
fxus65 kpih 231912
Area forecast discussion
National Weather Service Pocatello Idaho
112 PM MDT Tue Jul 23 2019
A strong push of monsoonal moisture is moving through the region
today ahead of a cold front. Expect scattered thunderstorms to
gradually work west to east through the night. Gusty outflow winds
are possible with these storms. Mostly dry weather is expected for
Thursday. We will keep a slight chance for showers and thunderstorms
along the Wyoming border as the moisture continues to work east.
Another push of moisture will arrive for Friday into Saturday,
resulting in another chance for storms. Then another front will pass
through the area late Saturday producing dry weather for
VFR conditions will continue tonight and have
vicinity thunderstorms at all taf sites through this evening.
Where a thunderstorm occurs could see winds gusts up to 40 knots
from outflow but for now not included in tafs. Main impact
Wednesday will be much stronger winds in the afternoon at all
sites behind a cold front moving through eastern Idaho. Expect
sustained 15 to 25 knots at pih and Ida and 10 to 20 at byi, sun
and dij. Expect some gusts in the 30 knot range.
Expect thunderstorms development this
afternoon and early evening with red flag warnings for zones
410, 422, 425, 427, 475 and 476 are currently in effect for
late this afternoon and evening . Isolated thunderstorms are
expected for zone 425 and 413, with scattered for
zone 411. Stronger thunderstorms will have outflow
winds of around 50 mph. Otherwise, expect outflows of around 25 to
40 mph. Wednesday a cold front moves through the area bringing
critical winds across the area, especially for the Snake River Plain
and our northern areas. There will be areas of relative
humidity below 15 percent and have issued a red flag warning for
zone 410 for wind gusts and low relative humidity from noon through
9 PM Wednesday afternoon and evening. Expect little impacts
Thursday with much weaker winds. Monsoonal moisture returns
Friday with a chance of thunderstorms returning.
red flag warning until midnight MDT tonight for idz410-425-427.
Red flag warning until 9 PM MDT this evening for idz422-475-476.
Red flag warning from noon to 9 PM MDT Wednesday for idz410.