Area Forecast Discussion
Issued by NWS Wichita, KS

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FXUS63 KICT 220323
AFDICT

Area Forecast Discussion
National Weather Service Wichita KS
1023 PM CDT Fri Jul 21 2017

.SHORT TERM...(This evening through Monday night)
Issued at 209 PM CDT Fri Jul 21 2017

Rain and thunder chances this weekend will be an issue with this
forecast, especially the timing and location.  Then how hot will it
get in the latter periods will be the other focus.

The NAM and GFS models differ about 3 hours or so regarding the
timing of a cold front that will move across the forecast area late
Saturday into Sunday.  This will not make any difference in highs on
Saturday but could play a role in rain chances and location.

A cold front will drop south across the forecast area Saturday
afternoon and then linger along the KS/OK border much of Sunday.
Ample moisture is present for precipitation, however, my concern
is whether or not enough forcing will occur to produce showers or
thunderstorms. The wind convergence is very weak and the upper
support seems to be lacking. So, with a slightly slower frontal
movement I have pushed back the chance for rain til Saturday
evening. I then lowered the chances slightly due to the lack
mechanisms to produce enough lift to produce showers or storms.
With the boundary hanging around the state line, a chance for rain
will continue along the southern parts of our forecast area
Sunday. The highs on Saturday will be another scorcher with values
ranging from the upper 90s SE to the lower 100s NC and SC
sections. Heat indices will also reach dangerous levels. Sunday
highs will be about 10 to 15 degrees cooler than Saturday.

With frontal passage Sunday, a return to normalcy will occur with
daytime highs through Wednesday in the lower and middle 90s. A
decent upper system will drop SE into the forecast area overnight
Monday into Tuesday morning.  With the amount of lift being forecast
with the system, this will be the best chance for rain over the next
7 days. The better chances will exist to the west of the Flint Hills
region.

.LONG TERM...(Tuesday through Friday)
Issued at 209 PM CDT Fri Jul 21 2017

Extended... Highs will begin a warming trend on Wednesday from the
lower 90s into the middle and upper 90s by the weekend.  Another
front will flirt with the area on Friday and into Saturday.  This
will introduce a chance for rain and storms to the forecast again.

&&

.AVIATION...(For the 06Z TAFS through 06Z Saturday night)
Issued at 1022 PM CDT Fri Jul 21 2017

Light south winds will prevail overnight and gradually switch to
the southwest, as a weak frontal boundary sinks southward into
central Kansas for Saturday afternoon. Isolated thunderstorms will
be possible along the front across central Kansas by mid-late
afternoon.

&&

.PRELIMINARY POINT TEMPS/POPS...
Wichita-KICT    78 104  75  94 /   0  10  20  40
Hutchinson      78 105  73  93 /   0  10  20  30
Newton          78 104  74  92 /   0  10  20  30
ElDorado        77 101  74  92 /   0  10  20  40
Winfield-KWLD   78 102  75  96 /   0  10  10  40
Russell         76 102  71  94 /   0  10  30  20
Great Bend      76 104  71  93 /   0  10  30  30
Salina          80 105  74  95 /   0  10  30  20
McPherson       78 104  73  93 /   0  10  20  30
Coffeyville     77  99  75  94 /   0   0  10  50
Chanute         78  99  74  93 /   0  10  20  40
Iola            77  99  74  92 /   0  10  20  40
Parsons-KPPF    77  99  75  94 /   0   0  10  50

&&

.ICT WATCHES/WARNINGS/ADVISORIES...
Excessive Heat Warning until 8 PM CDT Saturday for KSZ032-033-
047>053-067>072-082-083-091>096-098>100.

&&

$$

SHORT TERM...CWH
LONG TERM...CWH
AVIATION...CDJ



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