Area Forecast Discussion
Issued by NWS North Platte, NE

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FXUS63 KLBF 210439

Area Forecast Discussion
National Weather Service North Platte NE
1139 PM CDT Tue Jun 20 2017

Issued at 321 PM CDT Tue Jun 20 2017

Large ridge continues over the Desert Southwest with abundant warm
air extending up the west coast and into the central plains. Gulf
of Alaska closed low pushing a cold front onshore in the Pacific
Northwest. Tropical storm Cindy making landfall in the Gulf.Hudson
Bay low and wave rounding it into the Great Lakes then into the
northeast CONUS Cold frontal boundary along the Atlantic Coast.


.SHORT TERM...(This evening through Wednesday)
Issued at 321 PM CDT Tue Jun 20 2017

This afternoon have a cu field over western Kansas with a
thunderstorm southeast of GLD. cu beginning to develop over
southwest Nebraska and more enhanced convection developing south
of McCook. Laps indicating moisture pool over northwest Kansas
into south central Nebraska. Temperatures this afternoon have been
to 97f at klbf. Have retained isolated t over southeast zones
through 7pm. Backdoor cold front from north of oax to vtn. As a
wave moves through fast northwest flow this evening this boundary
will be the focus for thunderstorm development over northern
Nebraska late tonight. Highs tomorrow will rise into the 90s over
most of western Nebraska.

.LONG TERM...(Wednesday night through Tuesday)
Issued at 321 PM CDT Tue Jun 20 2017

Lows tonight will remain in the 60s over most of the forecast
area. Ring of fire to the southwest and upper low breaking down
ridge over western Canada as Gulf of Alaska low moves into south
central Canada tomorrow this will bring a stronger wave along the
South Dakota border Wednesday night with slight chances of
thunderstorms retained. Upper closed low to the north will push a
cold front through western Nebraska through the day on Thursday
with temperatures north around 80 and in the low 90s south. Storms
will focus on boundary stalled out over southwest Nebraska
Thursday afternoon with low level jet developing and crossing the
front thunderstorms some possibly severe are expected to develop
late afternoon and continue into the evening. An upper trough
moves south across the northern plains through the day on Friday
with much cooler temperatures behind it. Highs in the 70s Friday
and the 60s on Saturday with rainshowers from late Friday night
into Saturday afternoon. Gradual warming as the upper trough moves
east through the weekend into the first part of the week with
highs back into the 70s Sunday and approaching 80 on Monday.


.AVIATION...(For the 06Z TAFS through 06Z Wednesday night)
Issued at 1130 PM CDT Tue Jun 20 2017

VFR conditions currently prevail. Latest satellite imagery shows
an region of mid- and high-level clouds approaching western NEB
from the NEB Panhandle. Local radar display shows returns moving
into the southeastern NEB Panhandle that have been weakening in
intensity over the evening. These showers and thunderstorms were
stronger in the far western Panhandle with now scant lightning
detected and modest returns seen.

Rest of tonight, possible isolated showers in far southwest NEB
over the next few hours with low confidence associated with it.
Otherwise, an increase in SCT/BKN mid- and high-level clouds over
western NEB after midnight into the early morning. LLWS conditions
a concern now through the small hours associated with a low-level
jet. Upper height of about 1500 ft with winds at the top of the
layer around 35-45 kts. LLWS conditions are expected to diminish
in the early morning hours. Thunderstorms will be possible
tomorrow afternoon, primarily east of a line from Imperial to




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