Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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FXUS63 KOAX 272303
AFDOAX

Area Forecast Discussion
National Weather Service Omaha/Valley NE
603 PM CDT Thu Jul 27 2017

.SHORT TERM...(Tonight through Sunday)
Issued at 301 PM CDT Thu Jul 27 2017

A short-wave trough moving into northern MN as of early afternoon
will amplify while translating southeast across the Great Lakes
tonight and Friday. This upper-air system will be attended by a
reinforcing surge of continental-polar air which will maintain a
prominent surface ridge from the Great Lakes into mid MO Valley
through this weekend. Weak disturbances aloft will crest the mid-
level ridge axis over the northern Plains before diving southeast
through into the mid MS Valley. Precipitation associated with
these features will largely remain confined to the High Plains.
The net result of these developments is a generally dry and mild
weather pattern over the area through the short-term forecast
period.

.LONG TERM...(Sunday night through Thursday)
Issued at 301 PM CDT Thu Jul 27 2017

A large-scale pattern characterized by ridging over western North
America with downstream troughing in the east is expected to
persist through the extended range. Similar to the short-term
period, the best precipitation chances will be over the High
Plains. A potential exception will be around the middle of next
week when some model guidance suggests that a weak cool front
could focus a few showers and thunderstorms across the mid MO
Valley. Confidence in this scenario remains low at this juncture.
Otherwise, seasonally mild conditions will continue.

&&

.AVIATION...(For the 00Z TAFS through 00Z Friday evening)
Issued at 600 PM CDT Thu Jul 27 2017

A ridge of high pressure at the surface will remain in place from
WI and MN into eastern NE through the TAF period. Generally look
for VFR conditions. Some patchy fog is possible, but will not
mention in TAFs at this time.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...None.
IA...None.
&&

$$

SHORT TERM...Mead
LONG TERM...Mead
AVIATION...Miller


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