Area Forecast Discussion
Issued by NWS Quad Cities, IA IL

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
FXUS63 KDVN 241936

Area Forecast Discussion
National Weather Service Quad Cities IA IL
236 PM CDT Sat Aug 24 2019

Issued at 235 PM CDT Sat Aug 24 2019

18Z surface data had high pressure over the Great Lakes with a
developing low in southeast Colorado. Dew points were in the 50s
from the Ohio Valley and Great Lakes into the upper Midwest with 60s
and higher from the Plains into the Tennessee Valley.


.SHORT TERM...(This Evening through Sunday)
ISSUED AT 235 PM CDT Sat Aug 24 2019

Quiet and dry conditions will be seen through sunset Sunday. Clouds
will slowly be on the increase late tonight and Sunday but no rain is
expected until after sunset Sunday.

.LONG TERM...(Sunday Night through Saturday)
ISSUED AT 235 PM CDT Sat Aug 24 2019

Monday and Monday Night, The quasi-omega block upper air pattern
located over the middle of the country will break down and move
east, as a fairly strong 500mb shortwave aloft moves through the
upper midwest. The surface cold front associated with this wave will
move across the forecast area on Monday evening. The timing of the
cold frontal passage is favorable to produce thunderstorms. High
temperatures on Monday will be in the 80s with overnight lows in the

Tuesday through Thursday, The upper level flow switches to the
northwest and will remain that way for the entire week, as a deep
closed low develops aloft just north of Minnesota. Skies will be
mainly sunny as cool surface high presssure builds into the
central U.S. bringing below normal temperatures for late August.
Highs temperatures will be in the mid 70s, while normal highs are
in the mid 80s.

Friday, Another shortwave will pass through the northwest flow aloft
and push a surface cold front across the region bringing a chance of
showers or thunderstorms. A reinforcing shot of cool air will build
into the mid west behind this front. High temperatures will once
again be in the mid 70s with overnight lows in the 50s.

Labor Day Weekend, Skies should be dry. High temperature will be in
the mid 70s with overnight lows in the mid 50s. Cool temperatures,
along with a northwest breeze, will make for a fall-like Labor Day


.AVIATION...(For the 18Z TAFS through 18Z Sunday Afternoon)
ISSUED AT 1229 PM CDT Sat Aug 24 2019

VFR conditions will be seen as high pressure slowly moves into the
eastern Great Lakes. There may or may not be some very patchy MVFR
visibilities around sunrise Sunday.




AVIATION...08 is the U.S. government's official web portal to all federal, state and local government web resources and services.