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

------------=_1536014880-46358-2210
Content-Type: text/plain

ACUS11 KWNS 032247
SWOMCD
SPC MCD 032247
ILZ000-WIZ000-IAZ000-032345-

Mesoscale Discussion 1420
NWS Storm Prediction Center Norman OK
0547 PM CDT Mon Sep 03 2018

Areas affected...Central and eastern Iowa into far southwestern
Wisconsin and far northwestern Illinois

Concerning...Severe potential...Watch possible

Valid 032247Z - 032345Z

Probability of Watch Issuance...40 percent

SUMMARY...An isolated tornado threat will continue over the next
1-1.5 hours with convection across the discussion area.

DISCUSSION...Isolated to scattered convection continues to develop
amidst a weakly capped, moderately unstable airmass. The
environment in this region is characterized by sufficient deep shear
for storm organization, with storm motion vectors roughly parallel
to a west-southwest to east-northeast oriented warm front. One
notable storm over Linn County, Iowa has anchored along this
boundary and exhibited occasional strong low-level rotation and
tornadogenesis over the past hour or so. Convection upstream of
this activity (near/just east Des Moines Metro) may also interact
with this boundary and pose a tornado threat over the next hour as
well.

Over time, increasing low-level flow (in concert with a developing
850 mb jet) will cause the warm front (and associated surface
vorticity maxima) to lift northward into northern Iowa and far
southwestern Wisconsin. An isolated tornado threat will exist with
any convection that can remain rooted near the surface while
traversing the warm front.

..Cook.. 09/03/2018

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...MKX...DVN...ARX...DMX...

LAT...LON 43259131 43269239 42959342 42079445 41119487 40619470
40909338 41379216 41439116 41579013 42039004 42579042
42889065 43259131



------------=_1536014880-46358-2210
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. ------------=_1536014880-46358-2210--

--- SBBSecho 3.06-Linux
* Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)