Special Weather Statement, NWS North Platte, NE

Area Forecast Discussion
National Weather Service North Platte NE
624 PM CDT Wed Jul 4 2018

.SHORT TERM...(This evening through Thursday)
Issued at 244 PM CDT Wed Jul 4 2018

The main forecast concern going into tonight will be the
development of strong to severe storms with heavy rainfall an
additional threat.

The 12Z LBF sounding showed a PWAT of 1.40 inches with a tap of
monsoonal moisture shown by the current GOES-R water vapor
channels. This is near the historic max for this day, thus the
concern for heavy rainfall and possible flooding.

The cold front currently extends from Oshkosh through Brewster to
Spencer and continues to slowly sag southward. Development is
forecast to occur along and behind this front, initially across
the northeast, building southwestward this evening. The storms
should form a broken to continuous line this evening while slowly
dropping southward overnight. A slight risk for severe storms is
forecast south a a line from Lewellen through Ainsworth and
Spencer. With thunderstorms expected to become fairly widespread
across this area, Forth of July activities are likely to be
impacted, with rain and thunderstorms slow to move out of the
area.

On Thursday, the front will stall out across northern Kansas into
southeast Wyoming. While early to mid morning may be fairly dry,
chances increase late morning into the afternoon, mainly south of
highway 2. With east to southeast winds and partly to mostly
cloudy skies, temperatures to range mainly in the lower 80s.

.LONG TERM...(Thursday night through Wednesday)
Issued at 244 PM CDT Wed Jul 4 2018

Shower and thunderstorm chances continue Thursday night across
southwest areas, as moisture and disturbances rotate out of
Colorado. Chances for showers and a few thunderstorms to linger
into Friday as the upper ridge center build west across Colorado
and Utah. Highs to range from the upper 80s west to the lower 80s
east. Then expecting dry conditions through Sunday, followed by a
slight chance far northwest Sunday night and again Tuesday night
into Wednesday. This will occur as an upper trough moves east
across the Pacific NW into the Northern Plains. Highs Saturday
through Wednesday return to the upper 80s to mid 90s.

&&

.AVIATION...(For the 00Z TAFS through 00Z Thursday evening)
Issued at 624 PM CDT Wed Jul 4 2018

Thunderstorms will be scattered this evening from O'Neill through
Broken Bow and may develop into the KLBF terminal by around 03z
and persist until 07z. Breif heavy rain and gusty winds will be
possible during this timeframe. Isolated thunderstorms east of the
KLBF terminal early this evening should remain outside of the
KLBF vicinity. Scattered showers and thunderstorms will gradually
exit southwest and central Nebraska after 09z.

&&

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

SHORT TERM...Roberg
LONG TERM...Roberg
AVIATION...Roberg

Hazardous Weather Outlook
National Weather Service North Platte NE
320 PM CDT Wed Jul 4 2018

NEZ004>010-022>029-035>038-056>059-069>071-094-052030-
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-
320 PM CDT Wed Jul 4 2018 /220 PM MDT Wed Jul 4 2018/

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

.DAY ONE...TONIGHT.

Strong to locally severe thunderstorms are possible late this
afternoon and evening. The area of concern will be for areas
along and east of a Lewellen through Ainsworth and Spencer line.
Large hail, damaging winds and locally heavy rainfall will be the
greatest threats.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

Scattered thunderstorms are possible again Thursday through
Friday. The risk of organized severe weather is low during this
period.

There is another low chance of thunderstorms again on Sunday
night. Again, severe weather potential is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

&&

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

Roberg

Special Weather Statement
National Weather Service North Platte NE
630 PM CDT WED JUL 4 2018

NEZ027-050015-
Loup NE-
630 PM CDT WED JUL 4 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN LOUP COUNTY UNTIL 715 PM
CDT...

At 629 PM CDT, Doppler radar was tracking a strong thunderstorm 13
miles south of Rose, or 15 miles northwest of Taylor, moving
northeast at 30 mph.

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

Locations impacted include...
Horseshoe Bend Lake.

This includes Highway 183 between mile markers 135 and 147.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

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.

&&

LAT...LON 4187 9944 4198 9960 4208 9952 4208 9923
TIME...MOT...LOC 2329Z 210DEG 26KT 4197 9951

Roberg

Special Weather Statement
National Weather Service North Platte NE
752 PM CDT WED JUL 4 2018

NEZ059-070-071-050130-
Frontier NE-Hayes NE-Lincoln NE-
752 PM CDT WED JUL 4 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN FRONTIER...
SOUTHEASTERN LINCOLN AND EASTERN HAYES COUNTIES UNTIL 830 PM CDT...

At 752 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles southwest of Curtis, moving northeast at 5 mph.

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

Locations impacted include...
Curtis, Moorefield and Maywood.

This includes Highway 83 between mile markers 36 and 51.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

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.

&&

LAT...LON 4046 10068 4053 10082 4070 10071 4070 10036
TIME...MOT...LOC 0052Z 218DEG 5KT 4057 10067

Roberg

Special Weather Statement
National Weather Service North Platte NE
825 PM CDT WED JUL 4 2018

NEZ009-010-027-028-050215-
Loup NE-Holt NE-Garfield NE-Rock NE-
825 PM CDT WED JUL 4 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ROCK...NORTHEASTERN
LOUP...NORTHERN GARFIELD AND SOUTHWESTERN HOLT COUNTIES UNTIL 915 PM
CDT...

At 824 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles northwest of Calamus Reservoir State Recreation Area, or 15
miles north of Taylor, moving northeast at 30 mph.

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

Locations impacted include...
Valley View Flat Campground, Horseshoe Bend Lake, Carson Lake and
Hannamon Bayou Campground.

This includes Highway 183 between mile markers 130 and 144.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4184 9940 4200 9952 4232 9923 4197 9884
TIME...MOT...LOC 0124Z 234DEG 27KT 4199 9934

Kulik

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