Severe Thunderstorm Warning 330, NWS Hastings, NE

Area Forecast Discussion
National Weather Service Hastings NE
654 PM CDT Thu Aug 29 2019

...Aviation Update...

.SHORT TERM...(This evening through Friday)
Issued at 331 PM CDT Thu Aug 29 2019

The cold front has moved to through much of the area this afternoon.
At this time, the front appears to be near the Kansas/Nebraska
border, or just a little to the north. There are a few cumulus that
are forming mainly to the north of Interstate 80. The upper level
wave is expected to move into the area tonight. It is still a little
uncertain where and when the thunderstorms will develop. At this
time, expect that the storms will develop a little north of the
front in the western part of Nebraska and Kansas in the next couple
of hours, then they should move to the east/southeast through the
forecast area during the evening. The best chances are expected
across north central Kansas and far southern Nebraska during the
evening. There will continue to be a small chance for thunderstorms
during the overnight hours.

The thunderstorms should be moving out of the area early Friday
morning and there should be a little break between systems for a
time on Friday. By afternoon, the upper level wave moves into the
area again and thunderstorm chances spread across the area during
the afternoon. The best chances will be late afternoon and evening.
The models are fairly consistent with a southern trend in the system
and lower rainfall amounts, but there are still a few minor
differences. Even though amounts have come down some in the past day
or two, there will still be some thunderstorms around which could
cause some localized flooding.

.LONG TERM...(Friday night through Thursday)
Issued at 331 PM CDT Thu Aug 29 2019

The thunderstorms will continue across the area Friday night which
is still when the most of the precipitation is expected. The
thunderstorms should gradually come to an end on Saturday. The
question is when? Some of the models move it out Saturday morning
while others hold it in the area Saturday afternoon. Have kept a few
low PoPs into the afternoon.

Saturday night through Tuesday continues to look dry. Temperatures
will be a little cooler on Sunday, then warm a little more for
Monday and Tuesday, but still continue to be within a few degrees of
normal for this time of year.

Tuesday night through Thursday there are a few mainly weak upper
level waves that move through the area. There are some small, on and
off chances for thunderstorms. There is also another cold front that
moves through the area and temperatures will cool back down a few
degrees.

&&

.AVIATION...(For the 00Z KGRI/KEAR TAFS through 00Z Friday)
Issued at 653 PM CDT Thu Aug 29 2019

Confidence is fairly high in prevailing VFR ceiling through the
first half of the period, and VFR visibility throughout the period
(outside of any brief reductions from possible thunderstorm
activity). During the latter half of the period (Friday daytime),
there are some big question marks about whether ceilings go
prevailing MVFR or remain at least slightly into VFR territory.
After noting some differing model solutions, opted not to fully
buy the prevailing MVFR just yet, but am at least hinting at it
with a "SCT015" mention through the latter half. As for
rain/thunderstorm potential, the overall-best chances for
thunderstorms/severe storms appears to be steadily slipping south
of KGRI/KEAR, but at least isolated elevated convection cannot be
ruled out through much of tonight, so have maintained a
generic/low-confidence "vicinity" (VCTS) through 09Z. There is a
small chance of mainly light shower activity during the day
Friday, but felt this chance is too small for a formal mention at
this time.

&&

.GID WATCHES/WARNINGS/ADVISORIES...
NE...None.
KS...None.
&&

SHORT TERM...JCB
LONG TERM...JCB
AVIATION...Pfannkuch

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Special Weather Statement
National Weather Service Hastings NE
747 PM CDT Thu Aug 29 2019

NEZ061-074-300115-
Buffalo NE-Kearney NE-
747 PM CDT Thu Aug 29 2019

...SPECIAL WEATHER STATEMENT...

At 746 PM CDT, Doppler radar was tracking a strong thunderstorm near
Kearney, moving east at 25 mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Kearney and Gibbon.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
south central Nebraska.

LAT...LON 4061 9910 4080 9914 4087 9875 4064 9873
TIME...MOT...LOC 0046Z 259DEG 21KT 4073 9903

Pfannkuch

Special Weather Statement
National Weather Service Hastings NE
806 PM CDT Thu Aug 29 2019

NEZ084-085-300145-
Franklin NE-Webster NE-
806 PM CDT Thu Aug 29 2019

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL FRANKLIN AND
SOUTHERN WEBSTER COUNTIES UNTIL 845 PM CDT...

At 806 PM CDT, Doppler radar was tracking a strong thunderstorm near
Riverton, or 34 miles southwest of Hastings, moving southeast at 20
mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Red Cloud, Guide Rock, Riverton and Inavale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
north central Kansas...and south central Nebraska.

LAT...LON 4000 9838 4000 9870 4014 9891 4029 9877
      4009 9830
TIME...MOT...LOC 0106Z 305DEG 19KT 4018 9876

ADP