####018001558####
ACUS01 KWNS 120527

SWODY1

SPC AC 120525



Day 1 Convective Outlook  

NWS Storm Prediction Center Norman OK

1225 AM CDT Fri Apr 12 2024



Valid 121200Z - 131200Z



...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS

OF THE NORTHERN INTER MOUNTAIN REGION...



...SUMMARY...

A few marginally severe wind gusts and hail are possible over

northern Nevada, eastern Oregon, and western Idaho during the late

afternoon to early evening.



...Northern Inter Mountain Region...



Upper low is forecast to settle southeast toward the northern CA

Coast late in the day1 period. This evolution will ensure short-wave

ridging holds across the northern Rockies, effectively suppressing

any appreciable large-scale ascent. Even so, some moistening is

expected across this region, albeit meager, as meridional flow

across northern CA/eastern OR will encourage PW values to exceed

0.50 inch within a warm-advection regime. Latest model guidance

suggests some boundary-layer heating will contribute to weak

buoyancy within a strongly sheared environment. Isolated-scattered

convection is expected to develop across northwestern NV/eastern OR

extending into the northern Rockies of western MT by late afternoon.

Forecast soundings suggest gusty winds may accompany some of this

convection, and marginally severe hail may also be noted with the

most robust updrafts. Boundary-layer cooling should result in

weakening convection during the mid-evening hours.



..Darrow/Lyons.. 04/12/2024



$$