Severe Thunderstorm Warning 162, NWS North Platte, NE

239 
WWUS53 KLBF 012142
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
342 PM MDT TUE AUG 1 2017

NEC031-012200-
/O.CON.KLBF.SV.W.0162.000000T0000Z-170801T2200Z/
Cherry NE-
342 PM MDT TUE AUG 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM MDT
FOR SOUTHWESTERN CHERRY COUNTY...

At 342 PM MDT, a severe thunderstorm was located 22 miles north of
Ashby, or 37 miles southeast of Gordon, moving south at 25 mph.

HAZARD...Quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

Locations impacted include...
Intersection of Highway 61 and Survey Valley Road.

This includes Highway 61 between mile markers 179 and 187.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4242 10191 4240 10168 4227 10168 4229 10194
TIME...MOT...LOC 2142Z 007DEG 24KT 4234 10182 

HAIL...1.00IN
WIND...<50MPH
 
$$

ET

289 
WWUS53 KLBF 012150
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
350 PM MDT TUE AUG 1 2017

NEC031-012200-
/O.CON.KLBF.SV.W.0162.000000T0000Z-170801T2200Z/
Cherry NE-
350 PM MDT TUE AUG 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM MDT
FOR SOUTHWESTERN CHERRY COUNTY...

At 349 PM MDT, a severe thunderstorm was located 18 miles north of
Ashby, or 40 miles southeast of Gordon, moving south at 30 mph.

HAZARD...Quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

This severe thunderstorm will remain over mainly rural areas of
southwestern Cherry County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4233 10192 4235 10173 4228 10175 4229 10194
TIME...MOT...LOC 2149Z 009DEG 26KT 4229 10182 

HAIL...1.00IN
WIND...<50MPH
 
$$

ET

569 
WWUS53 KLBF 012157
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
357 PM MDT TUE AUG 1 2017

NEC031-012207-
/O.EXP.KLBF.SV.W.0162.000000T0000Z-170801T2200Z/
Cherry NE-
357 PM MDT TUE AUG 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CHERRY COUNTY
WILL EXPIRE AT 400 PM MDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However small hail is still possible with this
thunderstorm.

LAT...LON 4233 10192 4235 10173 4228 10175 4229 10194
TIME...MOT...LOC 2157Z 005DEG 17KT 4226 10182 

$$

ET

Area Forecast Discussion
National Weather Service North Platte NE
309 PM CDT Tue Aug 1 2017

.SYNOPSIS...
Issued at 309 PM CDT Tue Aug 1 2017

H5 Ridging across the western CONUS continues this
morning and has shifted slightly west over the past 24 hours. High
pressure extended from northern Nevada west to off the coast of
California. A ridge extended north into the Alaska panhandle and the
Yukon this morning. Downstream of this ridge, a closed low was
present over far northern Canada with a trough of low pressure
extending south to Hudson Bay. Between these two features, a strong
shortwave trough was present over northern Alberta with a secondary
shortwave over southern Manitoba. Another weaker wave was present
over northwestern South Dakota. This feature has progressed
southeast over the past 3 to 6 hours, and has led to the development
of thunderstorms over central South Dakota this morning. This
activity has since moved into south central South Dakota and
northeastern portions of the forecast area. Further south, mostly
clear skies were present over the central and western Sandhills as
well as the eastern panhandle and portions of southwestern Nebraska.
Some cloudiness was present over portions of central Nebraska.
Temperatures as of 2 PM CDT ranged from 79 at Valentine to 90 at
Ogallala.

&&

.SHORT TERM...(This evening through Wednesday night)
Issued at 309 PM CDT Tue Aug 1 2017

For this evening, will be evaluating ongoing thunderstorms in the
northeast and will be adjusting the timing of them for the
evening forecast. Two areas are favored for thunderstorms tonight.
The first in the northeastern CWA where lingering thunderstorms
from this afternoon will track southeast from south central South
Dakota. The second area is across the west and northwestern
forecast area. A shortwave, currently over western Montana, will
track to the east southeast this evening before emerging across
western South Dakota overnight. There will be a limited threat for
thunderstorms in the western CWA this evening as convection
drifts southeast off of the Black Hills and eastern Wyoming. This
activity is expected dissipate this evening. Overnight, toward 12z
Wednesday, thunderstorms are expected to develop over western
South Dakota and track southeast, approaching northwestern
portions of the forecast area toward 12z Wednesday. convection
will linger across northern Nebraska Wednesday morning, then
redevelop Wednesday afternoon as a cold front approaches northern
Nebraska. This front will push through the area late Wednesday
into Wednesday evening. This will be the best chance for
widespread convection, particularly in north and eastern cwa where
dynamics aloft are co-located with the frontal posn. Further
south and west, thunderstorm chances do not look nearly as
probable, but given the strength of the cold front, felt at least
a slight chance mention in the southwest was warranted here.

.LONG TERM...(Thursday through Tuesday)
Issued at 309 PM CDT Tue Aug 1 2017

Thursday through Friday...The cold front will be forced well
south of the area Thursday into Thursday night with dry and cool
conditions expected. The latest EC and MEX guidance touch the
upper 40s across most of the forecast area Friday morning. This
seems reasonable given the degree of dry air moving in behind the
front, light winds and strong high pressure which is anchored over
central Nebraska at 12z Friday. Highs Thursday will struggle to
get out of the mid 70s due to the degree of strong CAA behind the
exiting front, and the threat for cloud cover to linger,
especially across the north and northeastern forecast area. Friday
will see a slight rebound in temperatures as high pressure move
southeast into northern Missouri. This will lead to increased
southerly winds across western and north central Nebraska.

Friday night through Tuesday...The increased southerly winds Friday,
will begin to lift a warm front into southwestern Nebraska and the
eastern Nebraska panhandle. Both the EC and GFS solutions, develop
convection within the northwesterly flow aloft Friday night INVOF of
the frontal boundary. The EC solution develops most of its
convection in the northeastern cwa while the GFS develops most of its
convection in southwestern Nebraska which seems most reasonable as
this is where the surface frontal boundary is located. This boundary
will progress east on Saturday into Saturday evening with
thunderstorm chances spreading east. The threat will linger come to
an end Sunday as another strong cold front pushes through the
region. Dry and seasonal conditions will follow on Monday into
Tuesday

&&

.AVIATION...(For the 18Z TAFS through 18Z Wednesday afternoon)
Issued at 1236 PM CDT Tue Aug 1 2017

The main aviation concern for the next day will be the chance for
afternoon thunderstorms across the northern portion of the
forecast area. Thunderstorms are already developing across South
Dakota and are expected to drift southward throughout the
remainder of the afternoon. Current thinking is that thunderstorms
will track just east of KVTN and not directly impact the terminal.
Vicinity storms have been included in the forecast to account for
storms moving southeastward across north central Nebraska. Best
chance for storm development will be between 3pm and 8pm. For
later tonight and Wednesday morning, ceilings remain above 10000
feet with VFR conditions prevailing.

&&

.LBF WATCHES/WARNINGS/ADVISORIES...
None.
&&

SYNOPSIS...Buttler
SHORT TERM...Buttler
LONG TERM...Buttler
AVIATION...Kulik

Hazardous Weather Outlook
National Weather Service North Platte NE
1108 AM CDT Tue Aug 1 2017

NEZ004>010-022>029-035>038-056>059-069>071-094-021615-
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-
1108 AM CDT Tue Aug 1 2017 /1008 AM MDT Tue Aug 1 2017/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

Thunderstorms are possible this afternoon and tonight, with a few
strong storms possible in north central Nebraska. Gusty winds to
around 50 mph and hail up to nickel size will be possible.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

A more organized threat for thunderstorms exists Wednesday
afternoon and Wednesday night as a cold front pushes through.
Strong to severe thunderstorms possible. Large hail and damaging
wind gusts will be possible with the strongest storms.

Thunderstorms will again be possible this weekend. At this time,
the threat for severe storms is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

&&

Get your weather, hydrological, and climate information at
http://www.weather.gov/northplatte

CLB

Special Weather Statement
National Weather Service North Platte NE
210 PM MDT TUE AUG 1 2017

NEZ004-094-012045-
Sheridan NE-Western Cherry NE-
210 PM MDT TUE AUG 1 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CHERRY AND
NORTHEASTERN SHERIDAN COUNTIES UNTIL 245 PM MDT...

At 209 PM MDT, Doppler radar was tracking a strong thunderstorm 10
miles north of Gordon, moving southeast at 15 mph.

Nickel size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Gordon, Merriman, Hoover Lake, Irwin, Intersection of Highway 20 and
Irwin Road, Shell Lake State Wildlife Management Area and Bayonne.

This includes the following highways...
 Highway 20 between mile markers 105 and 139.
 Highway 61 between mile markers 224 and 229.

LAT...LON 4300 10175 4292 10163 4269 10217 4300 10235
TIME...MOT...LOC 2009Z 303DEG 12KT 4296 10214

Gomez

Special Weather Statement
National Weather Service North Platte NE
300 PM MDT TUE AUG 1 2017

NEZ004-094-012130-
Sheridan NE-Western Cherry NE-
300 PM MDT TUE AUG 1 2017

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL CHERRY AND EAST
CENTRAL SHERIDAN COUNTIES UNTIL 330 PM MDT...

At 300 PM MDT, Doppler radar was tracking a strong thunderstorm 15
miles southeast of Gordon, moving southeast at 30 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Highway 61 crossing the Snake River, Highway 27 crossing the Niobrara
River, Rock Hill, Bayonne and Morgan Lake.

This includes the following highways...
 Highway 20 between mile markers 113 and 118.
 Highway 61 between mile markers 199 and 204.

LAT...LON 4265 10229 4285 10201 4259 10166 4239 10191
TIME...MOT...LOC 2100Z 317DEG 26KT 4264 10201

Gomez