Flash Flood Warning 42, NWS Goodland, KS

822 
WGUS73 KGLD 300537
FFSGLD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
1137 PM MDT FRI JUL 29 2016

COC125-300547-
/O.CAN.KGLD.FF.W.0042.000000T0000Z-160730T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
YUMA CO-
1137 PM MDT FRI JUL 29 2016

...THE FLASH FLOOD WARNING FOR CENTRAL YUMA COUNTY IS CANCELLED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 4017 10266 4023 10246 4011 10231 3999 10252

$$

JN

Area Forecast Discussion
National Weather Service Goodland KS
534 PM MDT FRI JUL 29 2016

.SHORT TERM...(This evening through Saturday)
Issued at 222 PM MDT Fri Jul 29 2016

Another tedious/uncertain precipitation forecast. Persistent and
narrow band of light precipitation has been slowly decreasing
through the day. This area had persistent cloud cover and much
cooler temperatures and consequently will be much more stable.
Main shortwave looks to move across the southwest quadrant of the
area, south of where the light precipitation band is currently.
The convective allowing models confirm that by taking a cluster of
storms across that same area which was not adversely affected by
the persistent cloud cover and light rain.

So have slight chance to low chance in the far western and
southern areas. The question is what to do with the rainfall
forecast after midnight. Additional shortwave energy and mid level
warm air advection work its way across the eastern portion of the
area. Inserted slight chance there for after midnight which
continues/lingers in the far east Saturday morning. Toyed with
inserting fog into the grids later tonight and Saturday morning
but decided against it since the Nam was the only model really
indicating. The 18z run also reduced its area from the 12z run.

Another shortwave trough moves in from the the west on Saturday.
Inserted slight chance/low chance pops ahead of the shortwave on
Saturday afternoon.

.LONG TERM...(Saturday night through Friday)
Issued at 203 PM MDT Fri Jul 29 2016

Chances for precipitation during the extended period looks favorable
but there are different driving factors to create PoPs. As for
Saturday night, the CWA starts to become engulfed in a ridge that is
moving in from the west. The current NAM model run shows the region
to be dry due to the ridge cutting off the moisture inflow from the
southwestern states. Yet, the GFS has higher precipitation chances,
especially in the eastern half of the CWA. This is primarily due to
the moisture still moving into the region from the southwestern
states and a shortwave moving through the mid-levels. So storms can
not be ruled out at this time.

Sunday through Tuesday, the pattern will be fairly consistent with
the CWA being under a ridge. Embedded mid-level shortwaves are
showing to move over the region each day and moisture from the Gulf
of California will enhance storm potential each day.

Wednesday shows an upper level flow pattern change over the CWA. A
low pressure earlier in the week moves into the Pacific Northwest
and begins to push along the USA, Canadian border. So come
Wednesday, the ridge pushes east and troughing starts to impact the
region bringing with it a cold front. So moisture being pulled up
from Arizona and the cold front pushing through, precipitation
chance are much more probable on that afternoon into the overnight
hours.

Thursday into Friday will change patter wise. For Thursday, the
upper level pattern will push the trough east and create a zonal
pattern, for the most part, over the CWA. As the day progresses a
shortwave pushes through and enhances precipitation potential.
Friday will start to see ridging that pushes in from the west. PoPs
are still possible due to another embedded shortwave.

Temperatures will increase into the mid to upper 90s Sunday through
Wednesday and then drop into the 80s Thursday and Friday in the wake
of the cold front.

&&

.AVIATION...(For the 00Z TAFS through 00Z Saturday evening)
Issued at 534 PM MDT Fri Jul 29 2016

For KGLD...Mainly VFR conditions thru the period. 02z-05z vcts
possible. 10z- 18z will have MVFR ceilings around bkn010-025...w/
5sm in fog thru 14z. Winds SSE around 10kts w/ gusts to 20kts
after 18z Saturday.

For KMCK...VFR thru the period with a mix of scattered low/mid
clouds. Winds SE around 10kts...w/ gusts to 20kts after 18z
Saturday.

&&

.GLD Watches/Warnings/Advisories...
KS...NONE.
CO...NONE.
NE...NONE.
&&

SHORT TERM...BULLER
LONG TERM...CLT
AVIATION...JN

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GOODLAND KS
931 PM MDT FRI JUL 29 2016

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-310345-
YUMA COUNTY-KIT CARSON COUNTY-CHEYENNE COUNTY-CHEYENNE-RAWLINS-
DECATUR-NORTON-SHERMAN-THOMAS-SHERIDAN-GRAHAM-WALLACE-LOGAN-GOVE-
GREELEY-WICHITA-DUNDY-HITCHCOCK-RED WILLOW-
931 PM MDT FRI JUL 29 2016 /1031 PM CDT FRI JUL 29 2016/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL COLORADO...
EXTREME SOUTHWEST NEBRASKA AND NORTHWEST KANSAS.

.DAY ONE...TONIGHT...

THERE IS A MARGINAL RISK FOR SEVERE THUNDERSTORMS THIS EVENING.
THE BEST CHANCE FOR SEVERE THUNDERSTORMS WILL BE ALONG AND WEST OF
A LINE FROM TRIBUNE TO BURLINGTON. THE STRONGER STORMS WILL BE
CAPABLE OF PRODUCING LARGE HAIL AND ISOLATED DAMAGING WIND GUSTS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

A MARGINAL RISK FOR SEVERE THUNDERSTORMS CONTINUES ON SATURDAY.
ALTHOUGH COVERAGE WILL BE LIMITED...ANY STORM THAT DEVELOPS COULD
PRODUCE LARGE HAIL OR DAMAGING WIND GUSTS IN THE AFTERNOON AND
EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
1043 PM MDT FRI JUL 29 2016

COZ090-300500-
YUMA COUNTY CO-
1043 PM MDT FRI JUL 29 2016

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL YUMA COUNTY UNTIL 1100 PM
MDT...

AT 1043 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 4
MILES NORTHWEST OF ECKLEY...OR 10 MILES EAST OF YUMA...MOVING
SOUTHEAST AT 15 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
ECKLEY.

LAT...LON 4018 10268 4027 10248 4011 10228 3997 10258
TIME...MOT...LOC 0443Z 327DEG 12KT 4017 10254

LUNDQUIST