Subj : DAY1SVR: Day 1 Convective Outlook
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Mon Sep 02 2024 16:19:55

ACUS01 KWNS 021619
SWODY1
SPC AC 021618

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1118 AM CDT Mon Sep 02 2024

Valid 021630Z - 031200Z

....THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE INTERIOR PACIFIC NORTHWEST INTO THE NORTHERN GREAT
BASIN/ROCKIES...

....SUMMARY...
Isolated to scattered thunderstorms across the northern Great Basin
and parts of the interior Pacific Northwest may be capable of
occasional strong to severe wind gusts this afternoon and evening.

....Interior Pacific Northwest into the Northern Great
Basin/Rockies...
Water-vapor imagery this morning shows a closed low near the
northern CA/southern OR coast.  This upper feature will move east
through OR and be situated along the OR/ID border by daybreak
Tuesday.  A belt of stronger flow (30-50 kt 500-mb winds) will move
through the base of the larger-scale mid-level trough and overspread
northern NV into southwestern ID and eastern OR this afternoon into
the early evening.  Large-scale ascent associated with the upper
disturbance and the development of weak buoyancy (mainly via
heating), will facilitate the development of isolated to scattered
high-based thunderstorms beginning later this afternoon and
persisting into the evening.  Forecast soundings show large surface
temperature-dewpoint spreads (50 degrees F) with 9+ degrees C lapse
rates into the mid levels and a dry sub-cloud layer.  Evaporative
cooling of the more intense downdrafts will probably yield a risk
for isolated 60-70 mph gusts before weakening later this evening.

...Smith/Squitieri.. 09/02/2024

$$

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