Special Weather Statement, NWS Goodland, KS

Area Forecast Discussion
National Weather Service Goodland KS
729 PM MDT Thu Aug 19 2021

.SHORT TERM...(This evening through Saturday night)
Issued at 153 PM MDT Thu Aug 19 2021

The main concern in the short term period is the possibility of
severe thunderstorms across the tri-border region of Colorado,
Kansas, and Nebraska this afternoon and evening.

Thunderstorms are currently building in the convergent area near
a surface trough in far eastern Colorado with storms moving in a
north northeast direction. The area of continued development will
spread eastward through the afternoon and evening as the pattern
shifts east and a short wave trough ahead of the main upper trough
lifts out across the central High Plains region.

A cold front moves through the area after midnight tonight with a
few showers possibly lingering across the area into early Friday
as the main upper trough moves across the central High Plain by
mid-day Friday. Dry conditions will be in place late Friday
through the day on Saturday with subsidence aloft, dryer air, and cooler
temperatures on Saturday. Another short wave trough in the
southwest flow aloft moves across the area Saturday evening for a
slight chance of thunderstorms.

Temperatures bounce right back up into the 90s on Sunday with dry
air and downslope conditions across the area.

.LONG TERM...(Sunday through Thursday)
Issued at 145 PM MDT Thu Aug 19 2021

The forecast period begins with southwest flow aloft over the Tri-
State area and an advancing upper trough sliding into the Black
Hills on Sunday.  A ridge remains in place over the lower eastern
CONUS and high pressure persisting over the South and Deep South.
Hot and dry conditions are expected through the day with highs
ranging from the mid to upper 90s in most areas and a few low 100s
possible.  Minimum relative humidity values will range from the mid-
teens to low 20s along and west of a line from Benkelman to Goodland
to Arapahoe (CO).  Winds are not looking as impressive today as they
did on previous model runs and will be the limiting factor for fire
weather concerns.  Regardless, elevated fire weather conditions can
be expected Sunday afternoon for the aforementioned area and will
need to continue to be monitored in the coming days.

Flow transitions to west-southwesterly aloft as high pressure pushes
west into the Desert Southwest and the ridge flattens out.  Hot and
dry conditions are expected through this timeframe with highs
ranging from the low 90s to low 100s on Monday and low to upper 90s
on Tuesday.  Minimum relative humidity values will range from the
mid-teens to low 20s across eastern Colorado and adjacent Nebraska
and Kansas counties within the Goodland CWA both afternoons.  Winds
will once again be the limiting factor on both days.  Conditions
will need to continue to be monitored for possible changes.

Slightly cooler temperatures and chances for precipitation return to
the forecast Wednesday and Thursday.  A cold front will swing south
into the region through the day on Wednesday with showers and
thunderstorms developing ahead of it Wednesday afternoon and
evening.  Thursday, the front clears the GLD CWA and a trough begins
to move into the region.  This will bring additional chances for
showers and storms to the region on Thursday.

&&

.AVIATION...(For the 00Z TAFS through 00Z Friday evening)
Issued at 703 PM MDT Thu Aug 19 2021

An isolated thunderstorm cannot be ruled out at the MCK terminal
this evening (00-06Z). Otherwise, VFR conditions are anticipated
to prevail through the TAF period at both terminals. Breezy
southeast winds will become variable overnight.. shifting to the
WNW-NW at 20-25 knots shortly before sunrise (09-10Z) at the GLD
terminal, and shortly after sunrise (12-14Z) at the MCK terminal.

&&

.GLD WATCHES/WARNINGS/ADVISORIES...
KS...NONE.
CO...NONE.
NE...NONE.
&&

SHORT TERM...LOCKHART
LONG TERM...AW
AVIATION...VINCENT

Hazardous Weather Outlook
National Weather Service Goodland KS
921 PM MDT Thu Aug 19 2021

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-210330-
Yuma-Kit Carson-Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas-
Sheridan-Graham-Wallace-Logan-Gove-Greeley-Wichita-Dundy-Hitchcock-
Red Willow-
921 PM MDT Thu Aug 19 2021 /1021 PM CDT Thu Aug 19 2021/

This hazardous weather outlook is for extreme southwest Nebraska...
northwest Kansas and east central Colorado.

.DAY ONE...THROUGH TONIGHT...

A Tornado Watch remains in effect until 11 PM MDT this evening for
Yuma county in Colorado and Dundy, Hitchcock and Red Willow counties
in Nebraska.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH THURSDAY...

Elevated fire weather conditions are possible during the afternoon
hours on Sunday, Monday, and Tuesday, mainly in eastern Colorado.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any severe or significant weather
to the National Weather Service in Goodland via social media or
telephone.

Vincent

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
932 PM MDT THU AUG 19 2021

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

0850 PM     HAIL             2 N WRAY                40.11N 102.23W
08/19/2021  E0.75 INCH       YUMA               CO   PUBLIC

            RELAYED VIA SOCIAL MEDIA. TIME ESTIMATED BY
            RADAR.

&&

JBH

Special Weather Statement
National Weather Service Goodland KS
944 PM MDT Thu Aug 19 2021

COZ090-NEZ079-200415-
Yuma County CO-Dundy NE-
944 PM MDT Thu Aug 19 2021

...A strong thunderstorm will impact portions of east central Yuma
and northwestern Dundy Counties through 1015 PM MDT...

At 943 PM MDT, Doppler radar was tracking a strong thunderstorm 6
miles north of Wray, moving northeast at 30 mph.

HAZARD...Winds in excess of 40 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.

This storm will remain over mainly rural areas of east central Yuma
and northwestern Dundy Counties, including the following locations...
Alvin.

This includes Highway 385 between mile markers 248 and 251.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 Tornado Watch remains in effect until 1100 PM MDT for northeastern
Colorado...and southwestern Nebraska.

&&

LAT...LON 4035 10205 4035 10200 4029 10184 4010 10219
      4016 10227 4037 10205
TIME...MOT...LOC 0343Z 223DEG 24KT 4016 10218

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

KMK/JRM

Special Weather Statement
National Weather Service Goodland KS
949 PM MDT Thu Aug 19 2021

COZ090-200415-
Yuma County CO-
949 PM MDT Thu Aug 19 2021

...A strong thunderstorm will impact portions of northwestern Yuma
County through 1015 PM MDT...

At 949 PM MDT, Doppler radar was tracking a strong thunderstorm 12
miles east of Lone Star, or 15 miles northeast of Yuma, moving
northeast at 35 mph.

HAZARD...Winds in excess of 40 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.

This storm will remain over mainly rural areas of northwestern Yuma
County, including the following locations... Clarkville.

This includes Highway 385 between mile markers 267 and 270.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 Tornado Watch remains in effect until 1100 PM MDT for northeastern
Colorado.

&&

LAT...LON 4044 10219 4013 10274 4018 10279 4031 10279
      4044 10262
TIME...MOT...LOC 0349Z 226DEG 29KT 4034 10260

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

KMK/JRM

Special Weather Statement
National Weather Service Goodland KS
1011 PM MDT Thu Aug 19 2021

NEZ079-200500-
Dundy NE-
1011 PM MDT Thu Aug 19 2021

...A strong thunderstorm will impact portions of northeastern Dundy
County through 1100 PM MDT...

At 1010 PM MDT, Doppler radar was tracking a strong thunderstorm 12
miles south of Enders Reservoir State Recreation Area, or 15 miles
north of Benkelman, moving east at 25 mph.

HAZARD...Dime to penny size hail and wind gusts up to 55 mph.

SOURCE...Radar indicated.

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

This storm will remain over mainly rural areas of northeastern Dundy
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Tornado Watch remains in effect until 1100 PM MDT for southwestern
Nebraska.

&&

LAT...LON 4035 10136 4022 10136 4013 10164 4015 10176
      4019 10182 4026 10184 4031 10181 4035 10175
TIME...MOT...LOC 0410Z 252DEG 22KT 4026 10163

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH

Vincent

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GOODLAND KS
1013 PM MDT THU AUG 19 2021

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

0850 PM     HAIL             2 N WRAY                40.11N 102.23W
08/19/2021  E0.75 INCH       YUMA               CO   PUBLIC

            RELAYED VIA SOCIAL MEDIA. TIME ESTIMATED BY
            RADAR.

0657 PM     HAIL             CLARKVILLE              40.38N 102.62W
08/19/2021  E1.00 INCH       YUMA               CO   EMERGENCY MNGR

            PEA TO QUARTER SIZE HAIL WITH ONE INCH OF
            RAIN. RELAYED BY EM.

0643 PM     HAIL             6 WSW CLARKVILLE        40.34N 102.73W
08/19/2021  E1.00 INCH       YUMA               CO   TRAINED SPOTTER

            TRAINED SPOTTER REPORTED HAIL RANGING IN
            SIZE FROM PEAS TO QUARTERS.

0550 PM     HAIL             11 S BREWSTER           39.21N 101.37W
08/19/2021  E0.88 INCH       THOMAS             KS   PUBLIC

            RELAYED VIA SOCIAL MEDIA. TIME ESTIMATED BY
            RADAR.

0542 PM     HAIL             10 N WINONA             39.20N 101.26W
08/19/2021  E0.25 INCH       THOMAS             KS   PUBLIC

            BRIEF PERIOD OF PEA SIZE HAIL AND A MEASURED
            WIND GUST OF 37MPH.

0421 PM     TSTM WND GST     1 NNE GOODLAND          39.37N 101.70W
08/19/2021  M53 MPH          SHERMAN            KS   ASOS

            ASOS STATION KGLD GOODLAND.

0420 PM     TSTM WND DMG     4 NE GOODLAND           39.39N 101.65W
08/19/2021                   SHERMAN            KS   911 CALL CENTER

            DISCAPTCH CALLED TO REPORT A DOWNED
            POWERLINE. TIME ESTIMATED BASED ON RADAR.

0405 PM     HAIL             7 SSW SAINT FRANCIS     39.68N 101.86W
08/19/2021  M1.00 INCH       CHEYENNE           KS   TRAINED SPOTTER

0356 PM     HAIL             WALLACE                 38.91N 101.59W
08/19/2021  E0.25 INCH       WALLACE            KS   TRAINED SPOTTER

            SPOTTER REPORTED HEAVY RAIN AND A BRIEF
            PERIOD OF PEA SIZE HAIL. TIME ESTIMATED
            BASED ON RADAR.

0323 PM     HAIL             8 ESE CLARKVILLE        40.35N 102.47W
08/19/2021  E0.25 INCH       YUMA               CO   TRAINED SPOTTER

            SPOTTER REPORTED PEA SIZE HAIL AND HEAVY
            RAIN. TIME ESTIMATED BASED ON RADAR.

&&

Special Weather Statement
National Weather Service Goodland KS
1015 PM MDT Thu Aug 19 2021

COZ090-NEZ079-200500-
Yuma County CO-Dundy NE-
1015 PM MDT Thu Aug 19 2021

...A strong thunderstorm will impact portions of northeastern Yuma
and northwestern Dundy Counties through 1100 PM MDT...

At 1014 PM MDT, Doppler radar was tracking a strong thunderstorm 17
miles northeast of Wray, moving northeast at 5 mph.

HAZARD...Dime to penny size hail and wind gusts up to 55 mph.

SOURCE...Radar indicated.

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

This storm will remain over mainly rural areas of northeastern Yuma
County and northwestern Dundy Counties, including the following
locations... Alvin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Tornado Watch remains in effect until 1100 PM MDT for northeastern
Colorado...and southwestern Nebraska.

&&

LAT...LON 4021 10183 4015 10199 4015 10208 4019 10215
      4026 10216 4031 10210 4035 10200 4035 10172
TIME...MOT...LOC 0414Z 237DEG 6KT 4026 10200

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH

Vincent