Subj : DAY3SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Thu Aug 17 2023 07:31:10

ACUS03 KWNS 170731
SWODY3
SPC AC 170730

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0230 AM CDT Thu Aug 17 2023

Valid 191200Z - 201200Z

....NO SEVERE THUNDERSTORM AREAS FORECAST...

....SUMMARY...
Organized severe thunderstorms are not expected on Saturday.

....Synopsis...
An expansive upper-level anticyclone will extend over much of the
central U.S. Saturday, with stronger westerly mid-level flow
confined to the northern Rockies/Plains. An upper-level trough will
extend along the CA/OR/WA coast, while an upper low lifts slowly
northeast across New England. Tropical Cyclone Hilary will move
north near the Baja California coast. Please see the latest NHC
advisories for the most recent information.

....Portions of southeast California/southwest Arizona...
Mid-level flow is forecast to strengthen due to the combined effects
of the western U.S. upper trough and the approach of Tropical
Cyclone Hilary on Saturday. In addition, increasing moisture (PW in
excess of 1.75 inches) will contribute to a risk for heavy rainfall
(see latest WPC forecasts) with thunderstorms developing during the
day. Some potential may exist for isolated strong/possibly damaging
gusts should sufficient instability develop, however with expected
widespread cloud cover, confidence in such a scenario is too low to
introduce severe probabilities with this outlook.

...Bunting.. 08/17/2023

$$

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