Area Forecast Discussion
Issued by NWS Dodge City, KS

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FXUS63 KDDC 281701
AFDDDC

Area Forecast Discussion
National Weather Service Dodge City KS
1201 PM CDT TUE JUN 28 2016

...Updated for Aviation...

.SHORT TERM...(Today and tonight)
Issued at 325 AM CDT Tue Jun 28 2016

The northwest flow pattern is underway, and along with it a
challenging forecast. At the time of this writing at 0800 UTC, there
were two small MCSs, one across far eastern Colorado and adjacent
far western KS with a second one across far north central KS. It
looks like a majority of the southwest KS region will avoid both of
these MCSs as they track almost due south. The exception will be the
western six counties were some rainfall of around a quarter inch can
be expected with some locally higher amounts through the mid-morning
hours before the MCS weakens. Some of the hourly HRRR runs want to
merge the two MCSs, so that will have to be watched later in the
morning, but right now that doesn`t seem to be happening, so we will
be keeping POPs fairly low with the exception of far southwest and
west central KS.

It is unclear exactly how convection will evolve late this afternoon
through tonight. We could see a repeat of yesterday, except starting
off a bit farther north in Nebraska. A mature MCS never really
materialized last night like was forecast, however that does not
mean that one large, coherent, long-lived MCS won`t happen
tonight. Signals are certainly there in both the high resolution
convective allowing models and lower resolution models. The NAM12
is particularly bullish, showing a significant QPF signal rolling
SSE from western Nebraska into southwest KS by 12z Wednesday. Both
the NCEP WRF-ARW and WRF-NMMB show something coherent rolling
across the same generally area before decaying around or shortly
after 09z Wednesday. In the official forecast, we will have 40-50
POPs going mainly east and north of a Dighton-Dodge-Greensburg-
Pratt line with greatest confidence and QPF forecast values up
along the I-70 corridor.

.LONG TERM...(Wednesday through Monday)
Issued at 325 AM CDT Tue Jun 28 2016

The active northwest flow pattern will continue through the end of
the week. A couple of things that will probably act to enhance
precipitation coverage and intensity later in the week will be 1) a
fairly decent surface front which will slow down and perhaps become
quasi-stationary across southern Kansas and 2) some minor mid level
perturbations/enhanced mid level moisture rotating around weak
ridging, thanks to abundance of mountain convection across the
southern Rockies. POPs in the Long Term will be highest Thursday
Night through Saturday Night with 12-hr POPs every period in the 40-
60 percent territory somewhere across our forecast area from west
central KS through south central KS. It still looks as though some
areas will see potentially excessive rainfall once the polar front
gets down here, given all the moisture that will be around and the
generally weak mid-upper level flow leading to slow-moving
convection.

&&

.AVIATION...(For the 18Z TAFS through 18Z Wednesday afternoon)
Issued at 1156 AM CDT Tue Jun 28 2016

Light east to southeasterly upslope will prevail with VFR
conditions. A complex of thunderstorms is then forecast to drop
south to southeastward across much of south central Kansas late
tonight and towards morning. The best guess for timing is at KHYS
around 08-11Z and 09-12z at KGCK and KDDC. Strong outflow winds
will be the main threat along with heavy rainfall and frequent
lightning.

&&

.PRELIMINARY POINT TEMPS/POPS...
DDC  88  67  90  66 /  20  40  20  30
GCK  89  66  91  66 /  20  30  20  20
EHA  90  67  94  66 /  40  20  20  30
LBL  91  67  94  67 /  30  20  20  30
HYS  87  66  86  65 /  20  50  40  40
P28  91  68  90  69 /  20  30  30  40

&&

.DDC Watches/Warnings/Advisories...
NONE.
&&

$$

SHORT TERM...Umscheid
LONG TERM...Umscheid
AVIATION...Kruse



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