Flash Flood Warning 4, NWS North Platte, NE

490 
WGUS73 KLBF 261329
FFSLBF

Flash Flood Statement
National Weather Service North Platte NE
729 AM MDT Fri May 26 2023

NEC029-261339-
/O.EXP.KLBF.FF.W.0004.000000T0000Z-230526T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chase NE-
729 AM MDT Fri May 26 2023

...FLASH FLOOD WARNING AT 730 AM MDT THIS MORNING FOR SOUTHERN CHASE 
COUNTY HAS BEEN REPLACED WITH A FLOOD WARNING...

LAT...LON 4046 10204 4056 10204 4062 10189 4045 10135
      4035 10135 4035 10179

$$

MBS

Area Forecast Discussion
National Weather Service North Platte NE
340 AM CDT Fri May 26 2023

.SYNOPSIS...
Issued at 340 AM CDT Fri May 26 2023

Key Messages:

- Locally heavy rainfall will continue through mid morning for
  areas near and south of I80 with localized flooding possible.

- Daily chances for showers and thunderstorms are forecast through
  Thursday of next week.

SYNOPSIS...

A mesoscale convective vortex (MCV) is currently located over far
southwest Nebraska. Meanwhile a mid level disturbance continues
to lift northeast from near Scottsbluff through Atwood Kansas.
This is resulting in some excessive rainfall across Dundy and
Chase County. As these features continue to lift northeast,
locally heavy rainfall will continue for areas near and south of
I80 through mid morning.

&&

.SHORT TERM...(Today through Saturday)
Issued at 340 AM CDT Fri May 26 2023

Locally heavy rainfall is underway across portions of southwest
into west central Nebraska this morning with likely POPS. Due to
the slow movement of the MCV and mid level disturbance, rainfall
amounts from a quarter to half inch should be fairly widespread,
with locally heavy rainfall from a inch or more possible. Areas
east of Highway 183 are expected to remain mostly dry today.
Breezy south southeast winds today with mainly cloudy skies. Highs
will be coolest across the southwest and western Sandhills near
70 where cloudy skies and showers and a few thunderstorms will be
the more persistent.

Tonight through Saturday, an upper trough will remain in place
across the Great Basin in the western U.S. as blocking upper
ridge remains in place across the Great Lakes and Midwest.
Southwest flow aloft will exist from the Front Range and High
Plains. The 00Z CAMs forecast thunderstorms to develop along the
Front Range of Wyoming and Colorado early this afternoon and will
move eastward into the western panhandle and northeast Colorado
by early evening. This activity is forecast to move into western
Nebraska this evening and eventually weaken as they reach Highway
83 by midnight. Areas near and east of Highway 183 should once
again remain dry. A marginal risk for excessive rainfall is
forecast across the western Sandhills and Southwest. This will be
dependent on how well the evening convection holds together.
While lingering showers are possible across the west Saturday
morning. Due to PWATS remaining near an inch, and mid level lapse
rates near 7C/KM, afternoon development of isolated to scattered
showers or storms is possible. Highs Saturday will be slightly
warmer from near 75 to 80. Windy with a south southeast wind 20 to
30 mph.

.LONG TERM...(Saturday night through Thursday)
Issued at 340 AM CDT Fri May 26 2023

For the remainder of Memorial Day weekend, the Gulf moisture axis
will remain in place across the Central High Plains...with PWATS
from 1 to 1.20 inches through Sunday evening). Likely POPs across
the west and southwest Saturday night, will mainly a slight
chance Sunday morning, followed by a 30 to 50 percent chance
Sunday afternoon and evening as a mid and upper level trough
lifts through the Northern and Central Plains. There is a marginal
Risk for severe storms Sunday afternoon and evening west of
Highway 183.

Memorial Day through Thursday of next week, an upper trough will
continue to persist across the Western U.S. as the upper ridge
becomes better established across the Central and Eastern U.S.
With deep moisture still available across the Plains, daily
chances for afternoon and evening thunderstorm. Highs in the low
80s Memorial Day (Monday) should warm into the mid 80s by Tuesday
and Wednesday of next week. The threat for any severe storms
should remain low, with heavy rain to main concern.

&&

.AVIATION...(For the 06Z TAFS through 06Z Friday night)
Issued at 107 AM CDT Fri May 26 2023

Scattered showers and embedded thunderstorms across southwest
Nebraska will become more numerous over the next several hours.
Majority of precipitation will remain across southwest Nebraska,
impacting KLBF with periods of heavy rainfall, lightning, and
reductions in visibility. KVTN may see an isolated shower or
thunderstorm late this afternoon, but any impacts should be minimal.

&&

.LBF WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SYNOPSIS...Roberg
SHORT TERM...Roberg
LONG TERM...Roberg
AVIATION...Kulik

Hazardous Weather Outlook
National Weather Service North Platte NE
405 PM CDT Thu May 25 2023

NEZ004>010-022>029-035>038-056>059-069>071-094-262115-
Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden-Grant-
Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson-Logan-
Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier-
Western Cherry-
405 PM CDT Thu May 25 2023 /305 PM MDT Thu May 25 2023/

This Hazardous Weather Outlook is for portions of western and north
central Nebraska.

.DAY ONE...Tonight.

Scattered showers and thunderstorms across southwestern into central
Nebraska this evening into the overnight. Isolated showers and
thunderstorms are possible across north central Nebraska, through the
evening hours. The severe threat is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Persistent southerly winds will push moisture into the region over
the next several days, resulting in periodic showers and
thunderstorms.
Some storms may be capable of producing locally heavy rainfall
through Sunday. The severe threat remains low across much of the
area
with increased potential across the Panhandle on Friday and
Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.