Severe Storm Outlook Narrative (AC)
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ACUS11 KWNS 070141
SWOMCD
SPC MCD 070141
MTZ000-070345-
Mesoscale Discussion 2260
NWS Storm Prediction Center Norman OK
0841 PM CDT Sun Sep 06 2026
Areas affected...parts of north central Montana
Concerning...Severe Thunderstorm Watch 662...
Valid 070141Z - 070345Z
The severe weather threat for Severe Thunderstorm Watch 662
continues.
SUMMARY...Thunderstorms may still intensify as they approach areas
to the southwest and west of Glasgow through 9-10 PM MDT,
accompanied by increasing potential for large hail and localized
severe wind gusts.
DISCUSSION...Storms thus far have remained fairly small in size and
of modest intensity, with cells tending to propagate with the
south-southwesterly cloud-bearing layer mean flow (on the order of
30 kt). Through 03-04Z, ongoing cells to the west through
north-northwest of Lewistown may still acquire more substantively
unstable updraft inflow as they propagate into areas near and
southwest through west of Glasgow, where post-frontal surface dew
points remain in the lower to mid 60s F, perhaps supporting CAPE as
high as 2000 J/kg.
..Kerr.. 09/07/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GGW...TFX...
LAT...LON 47511061 48420978 48920906 48720797 47470889 46870980
46771043 47511061
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN