Area Forecast Discussion
Issued by NWS Tulsa, OK

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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 43 44 45 46 47 48 49 50
000
FXUS64 KTSA 142351
AFDTSA

Area Forecast Discussion
National Weather Service Tulsa OK
651 PM CDT Sat Apr 14 2018

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
VFR conditions are expected to prevail at most locations through
the valid period. MVFR conditions will be possible at the northwest
Arkansas TAF sites late tonight into Sunday morning.


&&

.PREV DISCUSSION... /Issued 359 PM CDT Sat Apr 14 2018/

DISCUSSION...
Cloudy and rather chilly conditions today as strong upper trough
continues to progress eastwards across the central conus. Stout
northwesterly winds also adding insult to injury, especially for
those clearing storm damage from yesterday`s severe weather. Early
afternoon satellite and surface observations indicated that cold
front has made it to Gulf with much cooler air filtering in behind
the front. Surface low and upper closed low were becoming more
stacked as the system moved over northeast Kansas and northwest
Missouri early this afternoon.

Cold air will continue to work in on the backside of the trough and
even with significant cloud cover overnight...much of northeastern
Oklahoma and northwest Arkansas will see temperatures drop into the
upper 20s to low 30s overnight. Have opted to upgrade the Freeze
Watch to a Freeze Warning for counties along and north of
Interstate 40, and kept the Freeze Watch in place for counties
south of Interstate 40 for now given uncertainty in lesser cloud
cover and its impacts to temperatures overnight.

Another cool day is in store for Sunday as system slowly moves
towards the lower Great Lakes. Northwest flow aloft and surface
high building in will keep afternoon temperatures in check
despite clearing skies. Northwesterly winds blowing over recent
mid and northern High Plains snowfall will prevent a substantial
modification of airmass; however, some airmass modification will
occur and we should see temperatures climb into the upper 40s and
50s Sunday afternoon. Lingering cloud cover across far
northeastern Oklahoma and northwest Arkansas may keep temperatures
several degrees cooler than those areas that have cleared given
the spring-time solar angle.

A warm-up will commence Monday and continue through mid-week before
the next cold front cools temperatures a bit to finish out the week.
This mid-week front looks dry as it moves through with a much
greater chance for more widespread precipitation by late in the
week into the weekend.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Freeze Warning from 1 AM to 10 AM CDT Sunday for OKZ054>072.

     Freeze Watch from 1 AM CDT Sunday through Sunday morning for
     OKZ049-073>076.

     Wind Advisory until 7 PM CDT this evening for OKZ054-059.

AR...Freeze Warning from 1 AM to 10 AM CDT Sunday for ARZ001-002-010-
     011-019-020.

&&

$$


AVIATION.....10



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