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Area forecast discussion 
National Weather Service Twin Cities/Chanhassen Minnesota
551 am CDT Friday Jul 29 2016

Updated for 12z aviation discussion...
issued at 548 am CDT Fri Jul 29 2016


Short term...(today and tonight)
issued at 508 am CDT Fri Jul 29 2016

Quiet weather in the short term with no precipitation expected
between now and Friday night. Winds will be light as well with
temperatures in the mid 70s to near 80 today.

Early morning water vapor imagery together with h500 winds showed a
very weak wind profile across the upper Midwest, and in fact the 00z
raob from Thursday evening showed winds less than 15 kts in the
lowest 20 kft of the atmosphere. This weak wind profile will
continue as Minnesota/WI sits in between a weak jet to the north and weak
jet to the south, so not anticipating any dynamical forcing
sufficient to produce clouds, let alone any precip. In addition,
forecast soundings so not show instability so shouldn't have any
potential for convection. For that reason kept the forecast dry
through Friday night.

Long term...(saturday through thursday)
issued at 508 am CDT Fri Jul 29 2016

The split flow that was alluded to in the previous discussion will
last through the first part of the weekend meaning little if any
chance for showers or thunderstorms between now and then. On Sunday
forecast models show h850 theta_e advection across western Minnesota, so
continued with some slight chances for thunderstorms during that
timeframe, with chances increasing and spreading eastward Sunday

Upper level ridging will build in on Monday meaning warmer
temperatures for the start of next week. Continued with blended
guidance and have highs approaching 90 degrees for the warmer
locations both Tuesday and Wednesday.

Looking ahead, a zonal jet will develop over the international
border with several weak shortwaves forecast to move over the upper
Midwest. These are the driving force behind the slight chances for
showers and thunderstorms for most of next week, but timing and
coverage remain uncertain at this time.


Aviation...(for the 12z tafs through 12z Saturday morning)
issued at 548 am CDT Fri Jul 29 2016

VFR conditions with northeast wind in eastern Minnesota and western WI.
Winds will be light and variable in western Minnesota. A few scattered
clouds are possible but overall skies should be mostly sunny.

Kmsp... VFR with light northeasterly winds.

/Outlook for kmsp/
Sat...VFR. Winds southeast 5 kts.
Sun...VFR. Winds southeast 5-10 kts.
Mon...mainly VFR. Chance MVFR/thunderstorms and rain late. Winds southeast 5-10 kts.


Mpx watches/warnings/advisories...


Short term...jrb
long term...jrb

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