Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

000
FXUS63 KOAX 201950
AFDOAX

Area Forecast Discussion
National Weather Service Omaha/Valley NE
250 PM CDT Tue Jun 20 2017

.SHORT TERM...(Tonight through Friday)
Issued at 345 PM CDT Tue Jun 20 2017

Transitionary period as upper ridge over the western CONUS
flattens and strong near zonal flow develops across the northern
plains and upper Midwest.

Combination of embedded impulses in the upper flow and quasi
stationary surface boundary that hangs up across the area
Wednesday into Thursday will result in periodic convection during
that time, primarily during the late afternoon and overnight.
Strong upper trough digs into the upper Midwest late Thursday
night into Friday driving surface boundary and associated precip
south of the area with cooler temperatures coming in behind the
trough.

Some scattered convection is possible late tonight into early
Wednesday morning as warm advection zone lifts across the area.
Another chance of storms will develop Wednesday afternoon and
evening as a surface trough approaches eastern Nebraska then
stalls Wednesday night. The stalled boundary begins to push south
Thursday afternoon and Thursday night as the upper trough drops
into the northern plains. Instability will increase along the
boundary from northeast into south central Nebraska Wednesday
afternoon with sufficient shear for the potential of some severe
thunderstorms into the evening.

.LONG TERM...(Friday night through Tuesday)
Issued at 345 PM CDT Tue Jun 20 2017

Broad upper trough then becomes the dominant feature in the
extended period with cooler temperatures and some chance of
periodic showers and thunderstorms for the area in the northwest
flow. Upper ridge over the western CONUS begins to shift east
into the plains on Tuesday with warmer temperatures starting to
work back into the area.

&&

.AVIATION...(For the 18Z TAFS through 18Z Wednesday afternoon)
Issued at 1232 PM CDT Tue Jun 20 2017

No aviation concerns this forecast cycle as VFR conditions
will dominate. There are a number of TAF lines due to expected
changes in wind direction.


&&

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

$$

SHORT TERM...Fobert
LONG TERM...Fobert
AVIATION...Pearson



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.