This is a multi-part message in MIME format...

------------=_1635137950-2133-1415
Content-Type: text/plain
Content-Transfer-Encoding: Quoted-printable

ACUS11 KWNS 250459
SWOMCD
SPC MCD 250458=20
WAZ000-ORZ000-250700-

Mesoscale Discussion 1898
NWS Storm Prediction Center Norman OK
1158 PM CDT Sun Oct 24 2021

Areas affected...Central/Southern WA Coast...Far Northern OR Coast

Concerning...Severe potential...Watch unlikely=20

Valid 250458Z - 250700Z

Probability of Watch Issuance...5 percent

SUMMARY...A brief tornado or two may occur within the immediate
coastal regions of central/southern WA and northern OR. A strong
convectively added wind gust or two is also possible.

DISCUSSION...Recent radar imagery has shown several deeper cores
within the more cellular activity off the coast. Moderate low-level
rotation has been noted within a few of these cells. Buoyancy is
expected to remain very limited, but strong forcing for ascent will
persist and shear will remain very strong. Recent LGX VAD profiles
sampled over 50 kt of 0-1 km vertical shear and over 400 m2/s2 of
0-1 km storm-relative helicity. The conditions will continue to
support transient, low-topped convective cells with occasional
rotation. Isolated convectively augmented wind gusts and/or brief
tornado may occur in the immediate coastal regions of
central/southern WA and northern OR.

..Mosier/Hart.. 10/25/2021

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!tL_-K0MUCDw_BsN-dZ3JoC359xq5AdMXxRfvhdc9LkwwqUgfoONSmAXD9QuqrnidA1ArxfiM$=
for graphic product...

ATTN...WFO...SEW...PQR...

LAT...LON 46722417 47402437 47472390 46792375 45742361 45592402
46722417=20



------------=_1635137950-2133-1415
Content-Type: text/plain; charset="US-ASCII"
Content-Disposition: inline
Content-Transfer-Encoding: 7BIT

= = =
To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM. ------------=_1635137950-2133-1415--

--- SBBSecho 3.12-Linux
* Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)