Severe Thunderstorm Warning 23, NWS North Platte, NE

372 
WWUS53 KLBF 240611
SVSLBF

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

NEC149-240620-
/O.CAN.KLBF.SV.W.0023.000000T0000Z-200524T0700Z/
Rock NE-
111 AM CDT Sun May 24 2020

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ROCK COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
north central Nebraska. A Severe Thunderstorm Watch also remains in
effect until 600 AM CDT for north central Nebraska.

LAT...LON 4270 9850 4210 9830 4209 9924 4278 9924
      4280 9926 4278 9937 4282 9935 4300 9947
      4300 9850
TIME...MOT...LOC 0610Z 258DEG 31KT 4300 9920 4260 9919 4216 9905 

$$

NEC015-089-103-240700-
/O.CON.KLBF.SV.W.0023.000000T0000Z-200524T0700Z/
Holt NE-Keya Paha NE-Boyd NE-
111 AM CDT Sun May 24 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM CDT
FOR HOLT...NORTHEASTERN KEYA PAHA AND BOYD COUNTIES...

At 110 AM CDT, severe thunderstorms were located along a line
extending from near Naper to near Stuart to 6 miles southwest of
Amelia, moving east at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
O'neill, Spencer, O'Neill, Atkinson, Stuart, Butte, Chambers, Page, 
Naper, Gross, Amelia, Inman, Bristow, Emmet, Dustin, Anoka, Hull 
Lake, Opportunity, Mills and Brocksburg.

This includes the following highways...
 Highway 20 between mile markers 275 and 324.
 Highway 281 between mile markers 159 and 223.
 Highway 12 between mile markers 77 and 134.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4270 9850 4210 9830 4209 9924 4278 9924
      4280 9926 4278 9937 4282 9935 4300 9947
      4300 9850
TIME...MOT...LOC 0610Z 258DEG 31KT 4300 9920 4260 9919 4216 9905 

HAIL...1.00IN
WIND...60MPH
 
$$

CDC

759 
WWUS53 KLBF 240638
SVSLBF

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

NEC103-240648-
/O.CAN.KLBF.SV.W.0023.000000T0000Z-200524T0700Z/
Keya Paha NE-
138 AM CDT Sun May 24 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KEYA PAHA COUNTY
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 600 AM CDT for
north central Nebraska.

LAT...LON 4270 9850 4210 9830 4210 9910 4249 9895
      4300 9874 4300 9850
TIME...MOT...LOC 0638Z 281DEG 41KT 4295 9862 4244 9869 4212 9875 

$$

NEC015-089-240700-
/O.CON.KLBF.SV.W.0023.000000T0000Z-200524T0700Z/
Holt NE-Boyd NE-
138 AM CDT Sun May 24 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM CDT
FOR CENTRAL HOLT AND EASTERN BOYD COUNTIES...

At 138 AM CDT, severe thunderstorms were located along a line
extending from near Gross to near O'neill to 6 miles south of
Chambers, moving east at 45 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
O'neill, Spencer, O'Neill, Chambers, Page, Gross, Amelia, Inman,
Bristow, Emmet, Knievels Corner, Scottville, Opportunity, Goose Lake
State Wildlife Management Area, Spencer Dam, Midway and Anncar.

This includes the following highways...
 Highway 20 between mile markers 292 and 324.
 Highway 281 between mile markers 159 and 223.
 Highway 12 between mile markers 119 and 134.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4270 9850 4210 9830 4210 9910 4249 9895
      4300 9874 4300 9850
TIME...MOT...LOC 0638Z 281DEG 41KT 4295 9862 4244 9869 4212 9875 

HAIL...1.00IN
WIND...60MPH
 
$$

CDC

Area Forecast Discussion
National Weather Service North Platte NE
1242 AM CDT Sun May 24 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 06Z TAFS through 06Z Sunday night)
Issued at 1241 AM CDT Sun May 24 2020

VFR conditions are expected across both terminals for the next 24
hours. However, ongoing thunderstorms could drop ceilings and
visibility into MVFR. Gusty northerly winds will begin to diminish
this afternoon and will remain below 12 knots through the remainder
of the forecast period.

&&

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

SYNOPSIS...Buttler
SHORT TERM...Buttler
LONG TERM...Buttler
AVIATION...Boatwright

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

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1136 PM CDT SAT MAY 23 2020

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

1130 PM     TSTM WND GST     2 N BROKEN BOW          41.43N 99.64W
05/23/2020  M86 MPH          CUSTER             NE   ASOS

            BROKEN BOW MUNICIPAL ASOS GUSTED TO 75KTS.

&&

CBROWN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1157 PM CDT SAT MAY 23 2020

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

1150 PM     HAIL             3 N BREWSTER            41.98N 99.87W
05/23/2020  E1.00 INCH       BLAINE             NE   PUBLIC

            QUARTER TO HALF DOLLAR SIZE HAIL REPORTED

&&

RBOATWRI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1207 AM CDT SUN MAY 24 2020

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

1204 AM     HAIL             4 SE MERNA              41.44N 99.71W
05/23/2020  E1.50 INCH       CUSTER             NE   EMERGENCY MNGR

            EM REPORTS PING PONG BALL SIZED HAIL 4SE MERNA.

1204 AM     HAIL             4 SE MERNA              41.44N 99.71W
05/23/2020  E1.50 INCH       CUSTER             NE   EMERGENCY MNGR

            PING PONG BALL SIZED HAIL.

&&

CBROWN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1224 AM CDT SUN MAY 24 2020

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

1216 AM     HAIL             5 E BROKEN BOW          41.41N 99.54W
05/23/2020  E1.50 INCH       CUSTER             NE   TRAINED SPOTTER

            PING PONG BALL SIZED HAIL.

&&

CBROWN

Special Weather Statement
National Weather Service North Platte NE
1235 AM CDT Sun May 24 2020

NEZ006-007-240600-
Keya Paha NE-Boyd NE-
1235 AM CDT Sun May 24 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN ROCK...NORTHWESTERN
HOLT...EASTERN KEYA PAHA AND WESTERN BOYD COUNTIES UNTIL 100 AM
CDT...

At 1235 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 9 miles east of Wewela to 9 miles east of
Springview. Movement was east at 35 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
these storms.

Locations impacted include...
Naper, Burton, Nets Peak, Mills and Brocksburg.

This includes Highway 12 between mile markers 64 and 102.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
north central Nebraska. A Severe Thunderstorm Watch also remains in
effect until 600 AM CDT for north central Nebraska.

LAT...LON 4288 9902 4284 9915 4279 9928 4279 9931
      4278 9934 4278 9937 4272 9953 4272 9959
      4300 9962 4300 9906
TIME...MOT...LOC 0535Z 269DEG 46KT 4298 9959 4277 9957

CDC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1244 AM CDT SUN MAY 24 2020

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

1153 PM     TSTM WND GST     7 W BROKEN BOW          41.41N 99.77W
05/23/2020  M63 MPH          CUSTER             NE   STORM CHASER

            STORM CHASER MEASURED A 63MPH WIND GUST.

1153 PM     TSTM WND GST     7 W BROKEN BOW          41.41N 99.77W
05/23/2020  M63 MPH          CUSTER             NE   STORM CHASER

            STORM CHASER MEASURED A 63MPH WIND GUST.

1235 AM     FLASH FLOOD      7 W BROKEN BOW          41.41N 99.77W
05/23/2020                   CUSTER             NE   STORM CHASER

            STORM CHASER REPORTS 6IN OF WATER OVER ROADWAY.

&&

CBROWN