Severe Thunderstorm Warning 17, NWS North Platte, NE

587 
WWUS53 KLBF 240437
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1137 PM CDT Sat May 23 2020

NEC041-071-113-115-240530-
/O.CON.KLBF.SV.W.0017.000000T0000Z-200524T0530Z/
Loup NE-Logan NE-Garfield NE-Custer NE-
1137 PM CDT Sat May 23 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT
FOR LOUP...EASTERN LOGAN...WESTERN GARFIELD AND NORTHERN CUSTER
COUNTIES...

At 1136 PM CDT, severe thunderstorms were located along a line
extending from 10 miles northeast of Gandy to near Callaway to 7
miles southwest of Burwell, moving northeast at 20 mph.

These are very dangerous storms.

HAZARD...80 mph wind gusts and two inch hail.

SOURCE...Radar indicated. At 1130 pm a wind gust to 86 mph was 
         recorded at Broken Bow Airport.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be heavily damaged. Expect 
         considerable damage to roofs, windows, and vehicles. 
         Extensive tree damage and power outages are likely.

Locations impacted include...
Burwell, Taylor, Arnold, Callaway, Sargent, Merna, Anselmo, Victoria 
Springs, Calamus Reservoir, Lillian, Logan, Fox Bayou, Walworth, 
Virginia Smith Dam, Tarboz Lake, Homestead Knolls Campground, an 
Finchville.

This includes the following highways...
 Highway 183 between mile markers 108 and 146.
 Highway 2 between mile markers 248 and 276.
 Highway 92 between mile markers 244 and 273.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. These storms have the potential to cause
serious injury and significant property damage.

&&

LAT...LON 4174 9910 4174 9921 4163 9921 4123 10003
      4155 10048 4173 10035 4173 9968 4207 9966
      4207 9883
TIME...MOT...LOC 0436Z 209DEG 17KT 4159 10034 4137 9993 4169 9923 

HAIL...2.00IN
WIND...80MPH
 
$$

CDC

112 
WWUS53 KLBF 240508
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1208 AM CDT Sun May 24 2020

NEC041-071-113-115-240530-
/O.CON.KLBF.SV.W.0017.000000T0000Z-200524T0530Z/
Loup NE-Logan NE-Garfield NE-Custer NE-
1208 AM CDT Sun May 24 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT
FOR LOUP...EASTERN LOGAN...WESTERN GARFIELD AND NORTHERN CUSTER
COUNTIES...

At 1208 AM CDT, severe thunderstorms were located along a line
extending from near Arnold to near Merna to 11 miles southwest of
Swan Lake, moving northeast at 30 mph.

HAZARD...Two inch hail and 70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

Locations impacted include...
Burwell, Taylor, Arnold, Callaway, Sargent, Merna, Anselmo, Victoria 
Springs, Calamus Reservoir, Lillian, Logan, Fox Bayou, Walworth, 
Virginia Smith Dam, Kent Diversion Dam, Shanklin Bluff, Tarboz Lake, 
Homestead Knolls Campground, Nunda Shoal Campground and Finchville.

This includes the following highways...
 Highway 183 between mile markers 108 and 146.
 Highway 2 between mile markers 248 and 276.
 Highway 92 between mile markers 244 and 273.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms are producing destructive winds and large damaging hail.
SEEK SHELTER NOW inside a sturdy structure and stay away from
windows.
 
&&

LAT...LON 4174 9910 4174 9921 4163 9921 4123 10003
      4155 10048 4173 10035 4173 9968 4207 9966
      4207 9883
TIME...MOT...LOC 0508Z 223DEG 24KT 4146 10025 4153 9969 4202 9912 

HAIL...2.00IN
WIND...70MPH
 
$$

CDC

Area Forecast Discussion...UPDATED
National Weather Service North Platte NE
621 PM CDT Sat May 23 2020

.SYNOPSIS...
Issued at 305 PM CDT Sat May 23 2020

H5 analysis from earlier this morning had an active
pattern noted across the CONUS. Closed lows were noted over central
PA, central Iowa and a third system over far northern Utah. The
third system over Utah, had a trough extending south into western
Arizona and far southern California. At midday, the Utah low, was
now located over west central Wyoming per the latest WV imagery. At
the surface: Low pressure extended from far southeastern Wyoming
into southeastern Colorado. A dryline extended from west of Limon
Colorado into the western Texas panhandle. South southeast of the
surface low in SE Wyoming, a weak convergence boundary was noted and
extended to north of Burlington Colorado. Skies were partly to
mostly cloudy this afternoon across the area and 2 PM CDT
temperatures ranged from 72 to 76 degrees.

&&

.SHORT TERM...(This evening through Sunday night)
Issued at 305 PM CDT Sat May 23 2020

Tonight thorugh Sunday night...Precipitation chances
tonight and Sunday night and the threat for severe storms tonight
are the main forecast challenges in the near term. For tonight: The
12z LBF Raob sounding from this morning indicated a strong capping
inversion with a convective temperature in the middle 80s. Highs
this afternoon are expected to reach the middle to upper 70s.
Forecast soundings from further west in far southwestern Nebraska
and the eastern Nebraska panhandle, indicate the capping inversion
remaining in place through peak heating this afternoon. That being
said, not expecting much in the way of storm initiation across the
forecast area late this afternoon. Further west though, the latest
NAM12 soln is indicating a weakening cap around 21z Saturday. The
last few hourly runs of the HRRR develops convection SE of Sterling
Colorado around 21z, approaching far SW Nebraska in the 5 to 6 PM CT
time frame this evening. Deep layer shear of 35 to 40 KTS will
adequate for supercells. Mid level lapse rates (H70-H50) are very
steep across sw and west central Nebraska. This would favor large
hail and even a very large hail threat across far western portions
of the forecast area through 01z Sunday. As for the tornado threat,
the capping inversion is problematic. Also low level helicities are
meager. That being said, the tornado threat appears limited and
confined to far western portions of the forecast area in a short
window, say 4 to 8 PM CT. As for precipitation chances, they will
remain greatest in the northern forecast area. As storms migrate off
of the panhandle early this evening, they are expected to congeal
into a convective complex, enhanced by the development of a low
level jet overnight. ATTM, not too concerned about flooding as the
heaviest rain is expected north of areas which saw the heaviest
rainfall earlier this week. Later this evening, there will be some
wind threat with the convective complex as it tracks east. The
latest NAMnest and HRRR solns indicate some bowing storm structures
within the convective complex.

The H5 low, will lift into eastern Montana overnight into Sunday
morning, forcing a front through the area by mid morning. This front
will then stall off to the south and east of the forecast area and
will be the focal point for showers and thunderstorms Sunday
afternoon/Sunday night. Other showers and storms may develop across
eastern Colorado Sunday afternoon, INVOF the front and near the base
of the H5 trough. Some of this activity may extend into SW then
Southern and portions of central Nebraska Sunday night. Have kept
pops going in the south, southeast and east Sunday/Sunday night, but
trimmed them back in the north as these areas will be well north of
the front and appreciable forcing will be very limited in these
areas. Skies will be mainly cloudy Sunday which will limit temps to
the 60s to around 70 for highs. The h5 low will weaken and meander
slowly east into the western Dakotas Sunday night. The front will
remain anchored off to the east of the forecast area, so pops will
be highest in the east with mainly dry conditions expected in the
west and northwest.

.LONG TERM...(Monday through Saturday)
Issued at 305 PM CDT Sat May 23 2020

The mid range solutions
including the ECMWF and GFS from this morning, develop a cutoff low
over central Texas into the Arklatex next week. Ridging to the west
of this feature will develop from the four corners, north into the
northern Rockies by late next week. Moisture will be locked in over
Texas with the cutoff, so am expecting mainly dry conditions across
the forecast area next week. This shows up in the latest MEX
guidance, which is well below climo for pops next week. Temperatures
will increase into the upper 70s to lower 80s next week with the
ridging off to the west. However with the axis of this feature
aligned over the Rockies, the hottest temps should remain west of
the forecast area.

&&

.AVIATION...(For the 00Z TAFS through 00Z Sunday evening)
Issued at 620 PM CDT Sat May 23 2020

Thunderstorm activity across the Panhandle this evening will move
east and expand in coverage across wrn and ncntl Nebraska
overnight affecting areas generally north of Interstate 80.
Isolated storm coverage is expected along and south of the
Interstate. All storm activity should exit the region by 12z
Sunday. VFR is generally expected across wrn and ncntl Nebraska
thereafter.

&&

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

SYNOPSIS...Buttler
SHORT TERM...Buttler
LONG TERM...Buttler
AVIATION...CDC

Hazardous Weather Outlook
National Weather Service North Platte NE
337 PM CDT Sat May 23 2020

NEZ004>010-022>029-035>038-056>059-069>071-094-242045-
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-
337 PM CDT Sat May 23 2020 /237 PM MDT Sat May 23 2020/

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

.DAY ONE...TONIGHT.

A slight risk for severe thunderstorms exists for all of western
and north central Nebraska tonight.

At this time the main threats are large hail and damaging winds.
Very large hail, greater than two inches in diameter and a
tornado or two are possible west of a line from Merriman to
Imperial.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

Thunderstorms are expected on Sunday night into Monday. These
storms are not expected to produce severe weather, however, heavy
rain is possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through 9 PM CDT west of highway
83 from Valentine to North Platte.

Please relay any information about observed severe weather to the
NWS. Precipitation reports are also appreciated.

&&

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

CLB

Special Weather Statement
National Weather Service North Platte NE
1034 PM CDT Sat May 23 2020

NEZ005-024-025-094-240430-
Hooker NE-Eastern Cherry NE-Western Cherry NE-Thomas NE-
1034 PM CDT Sat May 23 2020

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN CHERRY...NORTHEASTERN
HOOKER AND NORTHWESTERN THOMAS COUNTIES UNTIL 1130 PM CDT/1030 PM
MDT/...

At 1032 PM CDT/932 PM MDT/, Doppler radar was tracking strong
thunderstorms along a line extending from 6 miles northeast of
Kilgore to 7 miles northwest of Mullen. Movement was east at 25 mph.

Half inch hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Valentine, Kilgore, Brownlee, Valentine National Wildlife Refuge,
Merritt Reservoir, Crookston, Highway 97 crossing the North Loup
River, Sparks, Marsh Flat, Anderson Bridge State Wildlife Management
Area, Smith Falls State Park, Schlagel Creek State Wildlife
Management Area, and Big Alkali Lake State Wildlife Management Area.

This includes the following highways...
 Highway 20 between mile markers 175 and 218.
 Highway 97 between mile markers 70 and 141.
 Highway 83 between mile markers 157 and 222.
 Highway 12 between mile markers 1 and 19.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Merritt Reservoir, get out of the water and move
indoors or inside a vehicle. Remember, lightning can strike out to
10 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.

Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.

&&

A Severe Thunderstorm Watch remains in effect until 200 AM CDT/100 AM
MDT/ for north central and west central Nebraska.

LAT...LON 4208 10041 4207 10122 4300 10094 4300 10022
TIME...MOT...LOC 0332Z 268DEG 23KT 4299 10084 4215 10111

Jacobs

Special Weather Statement
National Weather Service North Platte NE
1037 PM CDT Sat May 23 2020

NEZ005-023>025-035>037-057-059-094-240430-
Hooker NE-Eastern Cherry NE-Grant NE-Arthur NE-McPherson NE-
Western Cherry NE-Thomas NE-Lincoln NE-Keith NE-Logan NE-
1037 PM CDT Sat May 23 2020

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN ARTHUR...SOUTH CENTRAL
CHERRY...SOUTHEASTERN GRANT...NORTHEASTERN KEITH...HOOKER...
NORTHWESTERN LINCOLN...NORTHWESTERN LOGAN...MCPHERSON AND THOMAS
COUNTIES UNTIL 1130 PM CDT/1030 PM MDT/...

At 1036 PM CDT/936 PM MDT/, Doppler radar was tracking strong
thunderstorms along a line extending from near Mullen to 17 miles
northeast of Keystone. Movement was east at 30 mph.

Half inch hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Mullen, Thedford, Tryon, Seneca, Ringgold, Flatts, Big Lamunyon
Flats, East Cody Lake, Calora, Bucktail Lake, Norway, Sand Beach
Lake, Highway 97 crossing the Dismal River, Three Mile Lake, Diamond
Bar Lake, Bucktail, Schnick Lake, Hecla, Kelso and Shimmons Lake.

This includes the following highways...
 Highway 2 between mile markers 170 and 216.
 Highway 92 between mile markers 171 and 219.
 Highway 97 between mile markers 17 and 71.
 Highway 83 between mile markers 135 and 156.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.

&&

A Severe Thunderstorm Watch remains in effect until 200 AM CDT/100 AM
MDT/ for southwestern, north central and west central Nebraska.

LAT...LON 4208 10041 4138 10072 4140 10168 4211 10128
TIME...MOT...LOC 0336Z 268DEG 26KT 4209 10105 4141 10138

Jacobs

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1051 PM CDT SAT MAY 23 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1015 PM     HAIL             5 ESE LEWELLEN          41.30N 102.05W
05/23/2020  M1.00 INCH       KEITH              NE   PUBLIC

            1 INCH HAIL, HEAVY RAIN

&&

RLAMB

Special Weather Statement
National Weather Service North Platte NE
1117 PM CDT Sat May 23 2020

NEZ026-038-240430-
Custer NE-Blaine NE-
1117 PM CDT Sat May 23 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN CUSTER AND SOUTHEASTERN
BLAINE COUNTIES UNTIL 1130 PM CDT...

At 1117 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles south of Brewster, moving northeast at 35 mph.

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

Locations impacted include...
Milburn Diversion Dam State Wildlife Management Area.

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 200 AM CDT for
central and north central Nebraska.

LAT...LON 4174 9974 4178 9998 4193 9987 4189 9969
TIME...MOT...LOC 0417Z 210DEG 30KT 4180 9983

CDC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1121 PM CDT SAT MAY 23 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1115 PM     FUNNEL CLOUD     1 W CALLAWAY            41.29N 99.94W
05/23/2020                   CUSTER             NE   FIRE DEPT/RESCUE

            FUNNEL CLOUD HALFWAY TO GROUND.

&&

CBROWN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1126 PM CDT SAT MAY 23 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1117 PM     TSTM WND GST     2 N BROKEN BOW          41.43N 99.64W
05/23/2020  M72 MPH          CUSTER             NE   ASOS

            BROKEN BOW MUNICIPAL ASOS GUSTED TO 63KTS.

&&

CBROWN