Area Forecast Discussion
Issued by NWS Bismarck, ND

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374
FXUS63 KBIS 220829
AFDBIS

Area Forecast Discussion
National Weather Service Bismarck ND
329 AM CDT Mon May 22 2017

.SHORT TERM...(Today and tonight)
Issued at 254 AM CDT Mon May 22 2017

An increase in areal coverage of showers and some thunderstorms
today highlights the short term period.

Latest water vapor imagery shows a shortwave over south central
Saskatchewan which is forecast to dive south through eastern
Montana. This shortwave in combination with the left exit region
of a jet streak will provide large scale ascent mainly across
western ND. A cold front will also swing through, and will
enhance low level convergence. Therefore, an increase in areal
coverage for rain showers is expected this morning across western
North Dakota. For Monday afternoon, scattered showers and
isolated thunderstorms (across southwest North Dakota) are
expected as broad upper level lift across western and central
North Dakota and diurnal heating provides instability.

Additionally today will be breezy and cool with northerly winds
around 20 mph and temperatures in the 50s to low 60s.

.LONG TERM...(Tuesday through Sunday)
Issued at 254 AM CDT Mon May 22 2017

The closed upper low in southwest Ontario Monday will begin to
sag south Monday night and Tuesday. This places the James River
Valley in the western fringes of this system resulting in a mostly
cloudy, cool air regime, along with slight chances for showers.
The rest of western and central ND will be dry, with increasing
sunshine, especially farther west. Warmer afternoon highs can be
expected with more sunshine west and north with mid/upper 60s.
The southern James River Valley will remain in the upper 50s.

A shortwave trough and surface cold front sweep through Wednesday
night and Thursday. There is a chance of showers and
thunderstorms west Wednesday evening and a chance of showers the
rest of Wednesday night and Thursday morning across central North
Dakota.

An active period remains through the long term with off and on
chances for showers and thunderstorms. However, precipitation
coverage and amounts should be minimal.


&&

.AVIATION...(For the 06Z TAFS through 06Z Monday night)
Issued at 1222 AM CDT Mon May 22 2017

VFR at all TAF sites through the TAF period. Scattered showers and
a few thunderstorms are likely during the morning and afternoon,
but coverage will be too uncertain to pinpoint and mention
convection in any particular TAF.


&&

.BIS WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

SHORT TERM...AJ
LONG TERM...AJ
AVIATION...AJ



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