Scientific Forecaster Discussion
Area forecast discussion...updated
National Weather Service Little Rock Arkansas
559 PM CDT Wednesday Jul 29 2015
VFR conditions expected through the period.
Previous discussion... /issued 232 PM CDT Wednesday Jul 29 2015/
Short term...tonight through Saturday night...
the upper level ridge of high pressure that has been in place across
the region will retreat to the west somewhat...allowing a northwesterly flow
to develop across the area. At the surface...a quasi stationary
front over southern Missouri will push down across the area tonight
and tomorrow. Although the front will result in slightly lower
daytime highs...the most noticable effect will be lower dewpoints.
Afternoon heat index values will only top 105 degress across a small
part of the southern zones for a few hours tomorrow afternoon.
Considering this...I will let the existing heat advisory expire
this evening and will not reissue at this time.
There could be some showers and thunderstorms associated with the
frontal boundary...but with the dome of high pressure above...I have
opted only for slight chance probability of precipitation in most areas.
Long term...Sunday through Wednesday night...
an upper level ridge over the central and southern rockies at the
start of the period...is expected to build towards the middle south
during this period. Above normal afternoon temperatures will
prevail through most of this period...along with dry conditions.
excessive heat warning until 7 PM CDT this evening for Arkansas-
Heat advisory until 7 PM CDT this evening for Bradley-Calhoun-