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000
ACUS01 KWNS 130054
SWODY1
SPC AC 130053

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0753 PM CDT Fri Apr 12 2024

Valid 130100Z - 131200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE PACIFIC NORTHWEST AND FAR EASTERN NORTH CAROLINA...

...SUMMARY...
Isolated severe wind gusts and hail may occur with thunderstorms
from eastern Oregon to western Montana this evening. A few strong
wind gusts may also occur in far eastern North Carolina.

...Pacific Northwest/Northern Rockies...
The latest water vapor imagery shows an anticyclonic flow pattern
over much of the western and central U.S. A shortwave trough is
appears to be moving through the Pacific Northwest. Scattered
thunderstorms are ongoing ahead of the shortwave from eastern Oregon
into southern Idaho. These storms will move northeastward across the
Pacific Northwest and into the northern Rockies this evening. The
RAP shows a pocket of maximized instability across central and
northern Idaho, where MLCAPE is estimated to be near 500 J/kg.
Within this area, moderate deep-layer shear is also analyzed, with
700-500 mb lapse rates in the 8.5 to 9.5 C/km range. This
environment should support an isolated wind-damage and hail threat
this evening.

...Far Eastern North Carolina...
An upper-level trough, evident on water vapor imagery, is currently
moving through the Carolinas. Ahead of the trough, a pocket of weak
instability is located near the coast of North Carolina, where a
line of thunderstorms is currently ongoing. This line will move
eastward across the Cape Hatteras over the next hour, where isolated
strong to severe wind gusts will be possible. The threat is expected
to move offshore after 02z.

..Broyles.. 04/13/2024

$$