Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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FXUS63 KOAX 291726

Area Forecast Discussion
National Weather Service Omaha/Valley NE
1226 PM CDT THU SEP 29 2016

.SHORT TERM...(today through Saturday)
Issued at 313 AM CDT THU SEP 29 2016

Latest water vapor imagery in addition to RAP 500 mb analysis
shows an upper ridge axis extending over the nation`s mid section.
This is sandwiched in between a trough to our west and a deep low
to our northeast. At the surface, a ridge axis extends from the
eastern Dakotas into eastern Nebrsaka. Some patchy fog cannot be
ruled out this morning with low dewpoint depressions, light winds
and clear skies. Otherwise, dry weather is expected to continue
for the forecast area through the weekend with temperatures close
to normal for this time of year as the upper low to our northeast
continues to spin south of the Great Lakes.

.LONG TERM...(Saturday night through Wednesday)
Issued at 313 AM CDT THU SEP 29 2016

By Saturday night, the previous mentioned upper low, having moved
only slightly, will begin to finally eject northeast into the
eastern Great Lakes region while the west coast trough continues
to deepen and shift east. Ahead of the west coast trough, strong
southerly flow will bring increasing moisture to the Central
Plains toward early next week. The next chance of
showers/thunderstorms looks to hold off until late Monday or early
Tuesday in warm air advection regime. Scattered chances will
continue into Wednesday before a cold front slides through the
area sometime mid week.


Issued at 1225 PM CDT THU SEP 29 2016

Mesoanalysis as of 17z revealed a surface ridge axis from central
Minnesota through eastern Nebraska into central Kansas. These data
indicate an axis of higher low-level moisture content wrapping
around a deep-layer cyclone over the Ohio Valley, and extending
as far west as the mid Missouri Valley. This moisture has
contributed to scattered cumulus at the top of the growing
boundary layer, and will likely foster areas of fog formation late
tonight into early Friday. The greatest potential for MVFR
visibilities appears to be at KOFK and KOMA in the 30/09z-30/14z
time frame. Otherwise, expect prevailing VFR conditions through
the remainder of the forecast period.


.OAX Watches/Warnings/Advisories...


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