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National Weather Service Des Moines Iowa
330 PM CDT Friday Jul 25 2014

issued at 320 PM CDT Friday Jul 25 2014

Low pressure over southeastern Nebraska will drift east as frontal
boundary extending east form the low begins to sink south tonight.
Secondary low will move up the front from the southwest on
Saturday. High pressure will build into the region and dominate
the weather into next week.


Short term /tonight/...
issued at 320 PM CDT Friday Jul 25 2014

Weak low pressure system in southern NE with weak boundary into
southern Iowa did not advance as far north today as
anticipated...with clouds from overnight convection also lingering
across the area. This helped to keep temperatures much cooler than
anticipated across central and southern County Warning Area. Therefore...will drop
heat advisory for remaining portion...locations in the old advisory
area may see heat index values near 100 through the remainder of the
afternoon...below criteria. In addition...have dropped overnight low
temperatures a few degrees as well.

Low will push eastward overnight...though will remain capped across
the County Warning Area and have kept dry forecast. Secondary low begins to
influence area near 12z...though models keep system further
west...and have cut probability of precipitation for end of period.

Long term /Saturday through Friday/...
issued at 320 PM CDT Friday Jul 25 2014

Frontal boundary will remain south of Iowa throiugh Saturday. Low
pressure will move northeastward along the boundary on Saturday with low
chances for thunderstorms across the south. Given the little northward
progress of the warm not see a strong chance of
vigorous thunderstorm development as far north Iowa Iowa will keep in
chances across the south...leaning toward the further south
solutions of the of NAM.

High pressure will exert its strength into the central U.S. Sat
night into next week. This will keep temperatures at least 5 to 10
degrees below normal for a good part of the week. There will be
little chance for any significant rainfall.


issued at 1233 PM CDT Friday Jul 25 2014

Areas of stratus will continue to affect kfod and kdsm through the
early afternoon hours before lifting to VFR. Southeasterly winds
will continue to be strong and gusty through 00z. Low will
approach from the west...and winds will decrease. Lighter winds
and VFR ceilings may allow for br/fog at sites...especially with
low level moisture from overnight storms last night. Have trended
towards MVFR and IFR visibilities near 12z for now. Conditions
will again quickly improve to VFR beyond 12z.


Dmx watches/warnings/advisories...


Synopsis...MS Jul 14
short term...awb
long term...MS Jul 14

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