Areas affected…portions of the Pacific Northwest eastward to the
northern high Plains
Concerning…Severe Thunderstorm Watch 567…568…
Valid 102253Z – 110100Z
The severe weather threat for Severe Thunderstorm Watch 567, 568
continues.
SUMMARY…Scattered strong/locally severe storms continue across a
large portion of the northern Intermountain region, and vicinity.
Locally damaging winds will remain the primary risk, though large
hail also remains possible locally.
DISCUSSION…The latest WV loop shows an upper low centered over
northern California, with a pronounced dry slot extending from
central and southern California across the Great Basin and into
southeast Idaho. On either side of — and near the nose of — this
dry slot, scattered thunderstorms continue to develop late this
afternoon. Given the relatively moist/unstable airmass in an
anticyclonic arc from eastern portions of the Pacific Northwest
across western and northern Idaho and Montana, and into the northern
high Plains, expect storms to continue across this region for
several hours.
A belt of fast/diffluent flow resides across this region —
sandwiched between the northern California upper low, and stout
ridging over the central U.S. This flow will continue to support
organized/rotating storms, locally capable of gusty/damaging winds
and hail.
..Goss.. 08/10/2019
…Please see www.spc.noaa.gov for graphic product…
ATTN…WFO…ABR…BIS…LBF…UNR…CYS…BYZ…GGW…RIW…
TFX…PIH…MSO…BOI…LKN…OTX…PDT…
LAT…LON 42021689 43411889 45031933 46641810 46811623 47431527
47640889 45710139 42870119 42610259 43230651 44201041
44501382 44031450 41921479 41681651 42021689