Severe Thunderstorm Warning 285, NWS North Platte, NE

445 
WWUS53 KLBF 050254
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
954 PM CDT Fri Aug 4 2023

NEC017-149-050330-
/O.CON.KLBF.SV.W.0285.000000T0000Z-230805T0330Z/
Rock NE-Brown NE-
954 PM CDT Fri Aug 4 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR NORTHERN ROCK AND EAST CENTRAL BROWN COUNTIES...

At 954 PM CDT, severe thunderstorms were located along a line
extending from near Long Pine to 10 miles southeast of Ainsworth to
14 miles northwest of Rose, moving northeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Bassett and Long Pine. 

This includes the following highways...
 Highway 183 between mile markers 168 and 200.
 Highway 20 between mile markers 244 and 267.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4229 9976 4260 9985 4272 9956 4273 9951
      4273 9948 4245 9928
TIME...MOT...LOC 0254Z 242DEG 25KT 4257 9977 4247 9968 4235 9965 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Brown

681 
WWUS53 KLBF 050311
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1011 PM CDT Fri Aug 4 2023

NEC017-050320-
/O.CAN.KLBF.SV.W.0285.000000T0000Z-230805T0330Z/
Brown NE-
1011 PM CDT Fri Aug 4 2023

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BROWN 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 100 AM CDT for
north central Nebraska.

LAT...LON 4232 9966 4267 9967 4272 9956 4273 9951
      4273 9948 4245 9928
TIME...MOT...LOC 0310Z 246DEG 27KT 4261 9962 4251 9953 4239 9950 

$$

NEC149-050330-
/O.CON.KLBF.SV.W.0285.000000T0000Z-230805T0330Z/
Rock NE-
1011 PM CDT Fri Aug 4 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR NORTHERN ROCK COUNTY...

At 1010 PM CDT, severe thunderstorms were located along a line
extending from 6 miles northeast of Long Pine to near Bassett, moving
northeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Bassett.

This includes the following highways...
 Highway 183 between mile markers 168 and 182.
 Highway 20 between mile markers 253 and 267.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4232 9966 4267 9967 4272 9956 4273 9951
      4273 9948 4245 9928
TIME...MOT...LOC 0310Z 246DEG 27KT 4261 9962 4251 9953 4239 9950 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Brown

015 
WWUS53 KLBF 050322
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1022 PM CDT Fri Aug 4 2023

NEC149-050332-
/O.EXP.KLBF.SV.W.0285.000000T0000Z-230805T0330Z/
Rock NE-
1022 PM CDT Fri Aug 4 2023

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ROCK COUNTY WILL
EXPIRE AT 1030 PM CDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
north central Nebraska.

LAT...LON 4232 9966 4267 9967 4272 9956 4273 9951
      4273 9948 4245 9928
TIME...MOT...LOC 0322Z 241DEG 21KT 4264 9954 4254 9945 4242 9942 

$$

Brown

Area Forecast Discussion...UPDATED
National Weather Service North Platte NE
637 PM CDT Fri Aug 4 2023

...Aviation Update...

.SYNOPSIS...
Issued at 321 PM CDT Fri Aug 4 2023

Key Messages:

- Severe storms possible this evening with large hail/damaging winds
  being the main threats.

- Severe threat shifts mainly south and east of the forecast area
  for Saturday.

- Breezy and cooler across the area Saturday and Sunday with gusty
  west and northwest winds.

H5 analysis this morning had a messy area of low pressure anchored
from northwestern Wyoming into southeastern Montana. Vis satellite
data as of midday has circulations noted in far SW South Dakota, SE
Montana, central Wyoming and NW Wyoming. Further east, a shortwave
trough was located over NE Kansas and SE Nebraska. Over the
remainder of the CONUS and Canada, an elongated area of high
pressure extended from southern Arizona east to the panhandle of
Florida. A closed low was located over Quebec with a trough
extending south to northern portions of the Bahamas. A shortwave
trough was located over northern Saskatchewan with a closed low off
the coast of western British Columbia. At the surface, a stationary
front extended from the central Texas Panhandle, east northeast to
southwestern Missouri. Another frontal boundary extended from
central Montana into southeastern Saskatchewan and western Manitoba.
Closer to western and north central Nebraska, a weak surface trough
was present from just east of Valentine to around Lexington
Nebraska. This trough served as a wind shift line with light
southerly or westerly winds west of the boundary with southeasterly
or easterly winds east of the boundary. Another weak convergent wind
boundary extended across the central Nebraska Panhandle this
afternoon. Skies were clear to partly cloudy mid afternoon and 3 PM
CT temperatures ranged from 79 degrees at Gordon to 88 degrees at
Imperial.

&&

.SHORT TERM...(This evening through Sunday)
Issued at 321 PM CDT Fri Aug 4 2023

Precipitation chances and the threat for severe storms, mainly
tonight, is the main forecast challenge. For tonight: In the lead-
up to 6 PM, two areas of thunderstorm initiation are coming to
light across western Nebraska. The first possibility is over north
central Nebraska. This is INVOF of a weak wind convergence
boundary, currently over northern Cherry County. The second area
of concerns is over the south central Panhandle INVOF of another
wind convergence boundary. This second area will more then likely
be influenced by incoming convection from southeastern Wyoming off
the Cheyenne Ridge. Lapse rates in the H85-H70 layer are steeper
in the southern panhandle. So, once convection does initialize, it
should go quickly in this area. Over north central Nebraska,
lapse rates are not as steep so am thinking convection will be
slower to materialize. For storms that do develop and punch into
the mid levels, ample deep layer shear will lead to rotating
storms early on in the evening. Storms should transition to more
of a line by mid evening along the highway 83 corridor, before
weakening in central and eastern Nebraska overnight, due to a
absent low level jet. In the meantime, current thinking is A) The
main hail threat is in the western half of the current slight
risk. B) The main wind threat will be more focused over the
eastern half of the slight risk area where more robust DCAPE is
present. As for initiation timing, current thoughts are are around
3 PM CT in the central and western panhandle, with storms
arriving in the North Platte area around 8 PM CT. Storms should
then exit most of the area by midnight CT. Saturday morning will
be fairly quiet with increasing west and northwest winds by late
morning. The latest NAM12 and 4KM NAM solns are indicating some
gust potential to 30 MPH Saturday morning into the afternoon
hours. This looks viable, especially over the northern half of the
forecast area thanks to cold air advection behind a cold frontal
boundary. This boundary will become oriented from SW Nebraska to
NE Nebraska by 00z Sunday. Thunderstorms will be possible in two
areas along this feature. 1) in far southwestern Nebraska and 2)
possibly in our far northeastern forecast area. Based on the model
timing this morning, believe the bulk of the severe threat for
Saturday will be just off to the east and south of the area.
However, if the models slow the front down with its next run or
two, the severe threat will shift north and west, back into
portions of the forecast area. Will pass these concerns on to the
upcoming shift to have them monitor this. Another area of
precipitation will be over northwestern portions of the forecast
area where some wraparound precipitation may develop on the
western and southwestern periphery of the upper level low over
South Dakota. The upper level low will track southeast into
northeastern Nebraska and southeastern South Dakota Saturday
night. Precipitation chances will shift from central and northern
portions of the forecast area, into northeastern portions of the
forecast area late Saturday night into Sunday morning with the
threat for precipitation exiting the area by midday. Once again,
we should see some gusty winds, especially late Sunday morning
into the afternoon hours. The 4 KM NAM soln indicates some gust
potential to 40 MPH in the eastern half of the CWA midday Sunday.
This seems believable with statistical guidance forecasting
sustained winds of 25 MPH in the same time frame.

.LONG TERM...(Sunday night through Friday)
Issued at 321 PM CDT Fri Aug 4 2023

Northwesterly flow aloft will dominate the long term pattern into
next week. Two decent threats for precipitation are Monday night
and again on Tuesday night. On Monday night, the main forcing
mechanism is mid level warm advection with a strong shortwave and
frontal passage for Tuesday night. After cool temperatures in the
70s for Monday, readings will moderate back into the 80s for
Tuesday through Friday with the warmest temps toward the end of
next week.

&&

.AVIATION...(For the 00Z TAFS through 00Z Saturday evening)
Issued at 638 PM CDT Fri Aug 4 2023

Scattered to numerous thunderstorms are underway across wrn and
ncntl Nebraska. This storm activity will move east this evening
and exit the region by 07z-08z.

MVFR ceilings are possible across ncntl Nebraska 12z-15z Saturday
morning. MVFR ceilings are possible across nrn Nebraska Saturday
afternoon, generally affecting areas along and north of highway
20.

Scattered showers and thunderstorms are also possible throughout
the day across nrn Nebraska, generally affecting areas along and
north of highway 20.

&&

.LBF WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

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

Hazardous Weather Outlook
National Weather Service North Platte NE
255 PM CDT Fri Aug 4 2023

NEZ004>010-022>029-035>038-056>059-069>071-094-052000-
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-
255 PM CDT Fri Aug 4 2023 /155 PM MDT Fri Aug 4 2023/

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

.DAY ONE...Late this afternoon and tonight.

Scattered thunderstorms are expected to develop across western
Nebraska this afternoon, spreading eastward across the area late
this afternoon into the evening. A few severe storms are possible,
especially along and west of a line from Bassett to Broken Bow.
Strong wind gusts, large hail, and locally heavy rainfall are the
primary threats.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

A few thunderstorms are possible again on Saturday, however, it
appears most of the severe potential will remain east of the area.

Periodic shower and thunderstorm chances persist Sunday into the
middle of next week, primarily in the afternoon and evening. The
severe weather potential remains uncertain at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report hail of any size, damaging
thunderstorm wind gusts as well as flooding.

Special Weather Statement
National Weather Service North Platte NE
825 PM CDT Fri Aug 4 2023

NEZ005-006-008-050215-
Brown NE-Eastern Cherry NE-Keya Paha NE-
825 PM CDT Fri Aug 4 2023

...A strong thunderstorm will impact portions of northeastern Cherry,
northwestern Brown and west central Keya Paha Counties through 915 PM
CDT...

At 824 PM CDT, Doppler radar was tracking a strong thunderstorm over
Sicangu Village, or 9 miles northwest of Valentine, moving southeast
at 25 mph.

HAZARD...Wind gusts up to 50 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Valentine, Crookston, Sparks and Smith Falls State Park.

This includes the following highways...
 Highway 20 between mile markers 185 and 188.
 Highway 83 between mile markers 213 and 222.
 Highway 12 between mile markers 1 and 25.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
north central Nebraska.

&&

LAT...LON 4279 10021 4292 10077 4300 10073 4299 10008
TIME...MOT...LOC 0124Z 292DEG 20KT 4299 10063

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

Brown

Preliminary Local Storm Report
National Weather Service North Platte NE
837 PM CDT Fri Aug 4 2023

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

0826 PM     Tstm Wnd Gst     9.5 SSE North Platte    41.01N 100.70W
08/04/2023  M74 MPH          Lincoln            NE   NWS Employee

&&

Special Weather Statement
National Weather Service North Platte NE
843 PM CDT Fri Aug 4 2023

NEZ026-037-038-059-050230-
Custer NE-Blaine NE-Lincoln NE-Logan NE-
843 PM CDT Fri Aug 4 2023

...Strong thunderstorms will impact portions of northeastern Lincoln,
southeastern Logan, Custer and southwestern Blaine Counties through
930 PM CDT...

At 843 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles southwest of Dunning to near Arnold to
near Brady. Movement was east at 40 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Broken Bow, Arnold, Callaway, Merna, Oconto, Anselmo, Berwyn,
Victoria Springs State Recreation Area, Weissert, Lillian, Milburn,
Round Valley, Etna, Walworth, Milldale, Lodi, Buckeye, Pleasant Hill,
Pressey State Wildlife Management Area and Finchville.

This includes the following highways...
 Highway 2 between mile markers 248 and 289.
 Highway 92 between mile markers 246 and 273.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 4173 9944 4141 9941 4106 9964 4105 10019
      4110 10031 4140 10026 4174 10021
TIME...MOT...LOC 0143Z 268DEG 35KT 4174 10017 4140 10016 4110 10032

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

Buttler

Special Weather Statement
National Weather Service North Platte NE
850 PM CDT Fri Aug 4 2023

NEZ009-026-027-050230-
Loup NE-Rock NE-Blaine NE-
850 PM CDT Fri Aug 4 2023

...A strong thunderstorm will impact portions of southern Rock,
northwestern Loup and northeastern Blaine Counties through 930 PM
CDT...

At 850 PM CDT, Doppler radar was tracking a strong thunderstorm near
Brewster, moving east at 15 mph.

HAZARD...Nickel size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Fox Bayou and Almeria Meadow State Wildlife Management Area.

This includes Highway 183 between mile markers 140 and 148.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
north central Nebraska.

&&

LAT...LON 4191 9985 4202 9986 4207 9970 4209 9943
      4189 9941
TIME...MOT...LOC 0150Z 261DEG 15KT 4198 9978

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH

Brown

Special Weather Statement
National Weather Service North Platte NE
854 PM CDT Fri Aug 4 2023

NEZ008-050245-
Brown NE-
854 PM CDT Fri Aug 4 2023

...A strong thunderstorm will impact portions of east central Brown
County through 945 PM CDT...

At 853 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles southwest of Ainsworth, moving east at 10 mph.

HAZARD...Nickel size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Ainsworth, Long Pine, Hofeld Lake and Jones Lake.

This includes the following highways...
 Highway 183 near mile marker 194.
 Highway 20 between mile markers 245 and 251.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
north central Nebraska.

&&

LAT...LON 4238 10003 4253 10005 4256 9968 4245 9968
      4231 9967
TIME...MOT...LOC 0153Z 271DEG 9KT 4245 9997

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH

Brown

Special Weather Statement
National Weather Service North Platte NE
928 PM CDT Fri Aug 4 2023

NEZ008-009-026-027-050315-
Brown NE-Loup NE-Rock NE-Blaine NE-
928 PM CDT Fri Aug 4 2023

...Strong thunderstorms will impact portions of southern Rock,
northwestern Loup, southeastern Brown and northeastern Blaine
Counties through 1015 PM CDT...

At 928 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 15 miles south of Ainsworth to 16 miles west of
Rose to 7 miles north of Brewster. Movement was northeast at 35 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Rose, Hofeld Lake, Fox Bayou, Raven, Duff, Pony Lake, Sybrant, Jones
Lake, Twin Lakes State Wildlife Management Area and Johnsons Corner.

This includes Highway 183 between mile markers 145 and 175.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
north central Nebraska.

&&

LAT...LON 4254 9931 4209 9924 4197 9992 4236 10001
TIME...MOT...LOC 0228Z 246DEG 31KT 4233 9991 4220 9985 4205 9984

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

Brown