Severe Storm Outlook Narrative (AC)
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ACUS11 KWNS 312034
SWOMCD
SPC MCD 312034
IDZ000-MTZ000-UTZ000-NVZ000-ORZ000-312130-
Mesoscale Discussion 1856
NWS Storm Prediction Center Norman OK
0334 PM CDT Thu Jul 31 2025
Areas affected...portions of southern/central Idaho and southwestern
Montana
Concerning...Severe potential...Watch unlikely
Valid 312034Z - 312130Z
Probability of Watch Issuance...20 percent
SUMMARY...Potential for strong to severe winds with thunderstorm
activity this afternoon and evening.
DISCUSSION...Thunderstorm activity has developed across portions of
southern Idaho near the Snake River Plain and Sawtooth Range. This
is expected to continue to move northward this afternoon, with
potential for strong to severe winds. Temperatures across
southern/central Idaho are in the mid to upper 80s, with large dew
point spreads around 40 degrees noted in surface observations.
Surface objective analysis shows steep low to mid-level lapse rates
around 8.5-9 C/km. This environment will be supportive of strong
downburst potential. As storms cluster and grow along outflow, a
more organized damaging wind threat may emerge.
..Thornton/Smith.. 07/31/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...TFX...SLC...PIH...MSO...BOI...LKN...
LAT...LON 42801676 43371704 44571702 45201660 45591572 45841492
46151359 45911278 45581222 44811178 43991201 43411227
42601297 42091321 41781435 42371644 42801676
MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH