Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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FXUS63 KOAX 232003

Area Forecast Discussion
National Weather Service Omaha/Valley NE
303 PM CDT Tue May 23 2017

.SHORT TERM...(Tonight through Wednesday night)
Issued at 301 PM CDT Tue May 23 2017

Large upper level low was located over northern Iowa this
afternoon and will continue to drop south toward Missouri by
Wednesday morning. Scattered showers continue to pop up across the
CWA this afternoon around the backside of the low. These appear
to be diurnally driven and should begin to diminish with sunset.

Wednesday looks dry as the above mentioned upper level low continues
to dig south and east allowing weak upper level ridging to build
overhead. At the surface, a high pressure ridge will be pushing into
the area Wednesday afternoon allowing winds to diminish and return
southerly flow setting up by Thursday morning.

.LONG TERM...(Thursday through Tuesday)
Issued at 301 PM CDT Tue May 23 2017

By early Thursday, a large upper low over southwestern Canada will
slide east along the International border allowing a few weak
embedded shortwaves to drop into the Central Plains. One of the
stronger waves is progged to move into northeastern Nebraska
Thursday afternoon when we have a small chance of pops.  Otherwise,
off and on chances of precipitation remain through the weekend as
continued mid-level impulses take aim at the region the large
Canadian low.


.AVIATION...(For the 18Z TAFS through 18Z Wednesday afternoon)
Issued at 1202 PM CDT Tue May 23 2017

Ceilings should be variable this afternoon with at least TEMPO
MVFR conditions possible. There is some uncertainty on cloud
heights tonight, but MVFR conditions could occur at least into the
overnight hours. RAP and GFS model low level RH forecasts seemed
to be reasonable.




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