Alert archive / Colorado / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 86, NWS Goodland, KS

June 26, 2020Cheyenne County, Kit Carson County, Yuma County, Colorado; Cheyenne County, Sherman County, Wallace County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Jun 26, 2020, 8:14 PM MDT for Cheyenne County, Kit Carson County, Yuma County, Colorado; Cheyenne County, Sherman County, Wallace County, Kansas. It was in force for 76 min. 6 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 26, 2020, 8:14 PM MDT (02:14 UTC)
Expired
Jun 26, 2020, 9:30 PM MDT
In force
76 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Hail
0.75 in
Wind
70.0 mph

Counties Cheyenne County, CO, Kit Carson County, CO, Yuma County, CO, Cheyenne County, KS, Sherman County, KS, Wallace County, KS

The radar

The Goodland radar (KGLD), 27 km from the middle of the area, began a volume at 02:17 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Jun 26, 8:35 PM MDTTSTM WND GST 502 E Idalia, COSTORM CHASER ESTIMATED 50 MPH GUST WITH A FEW SMALL TREE BRANCHES DOWN.
Jun 26, 8:45 PM MDTTSTM WND GST 5713 Nnw Ruleton, KSMESONET STATION FW1147 16 NW GOODLAND.
Jun 26, 8:53 PM MDTTSTM WND GST 555 S Burlington, COASOS STATION KITR BURLINGTON CO AIRPORT.
Jun 26, 9:06 PM MDTTSTM WND GST 591 Ne Goodland, KS
Jun 26, 9:15 PM MDTTSTM WND GST 4012 Nne Goodland, KSOFF-DUTY NWS EMPLOYEE REPORTED 40-50 MPH GUSTS.
Jun 26, 9:25 PM MDTTSTM WND GST 552 W Edson, KSMESONET STATION K5ED7 I-70 - EDSON INTERCHANGE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 52 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 26, 1:12 PM MDTSevere Thunderstorm WatchSPC10 hr
Jun 26, 6:50 PM MDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 2.2 hours before the alert went out and 123 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 00:00Z on 2020-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2020-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2227 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
141 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

368 
WUUS53 KGLD 270214
SVRGLD
COC017-063-125-KSC023-181-199-270330-
/O.NEW.KGLD.SV.W.0086.200627T0214Z-200627T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
814 PM MDT Fri Jun 26 2020

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Northeastern Cheyenne County in east central Colorado...
  Southeastern Yuma County in northeastern Colorado...
  Eastern Kit Carson County in east central Colorado...
  Northern Wallace County in west central Kansas...
  Cheyenne County in northwestern Kansas...
  Sherman County in northwestern Kansas...

* Until 930 PM MDT/1030 PM CDT/.

* At 813 PM MDT/913 PM CDT/, severe thunderstorms were located along
  a line extending from 14 miles south of Wray to 5 miles west of
  Bonny Reservoir to 4 miles southwest of Bethune, moving east at 30
  mph.

  HAZARD...70 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Goodland, Burlington, St. Francis, Kanorado, Ruleton, Bonny
  Reservoir and Bird City.

People attending Road Side Park - South of EM Building should seek
safe shelter immediately!

This includes the following highways...
 Interstate 70 in Kansas between mile markers 0 and 35.
 Interstate 70 in Colorado between mile markers 434 and 450.
 Highway 385 between mile markers 164 and 239.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4003 10205 4000 10205 4000 10141 3914 10139
      3913 10148 3894 10148 3894 10234 4000 10234
TIME...MOT...LOC 0213Z 268DEG 24KT 3987 10227 3961 10227 3925 10247 

HAIL...0.75IN
WIND...70MPH
 
$$

Vincent
5 follow-up statements
856 
WWUS53 KGLD 270227
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
827 PM MDT Fri Jun 26 2020

COC017-063-125-KSC023-181-199-270330-
/O.CON.KGLD.SV.W.0086.000000T0000Z-200627T0330Z/
Cheyenne CO-Yuma CO-Kit Carson CO-Wallace KS-Cheyenne KS-Sherman KS-
827 PM MDT Fri Jun 26 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM
MDT/1030 PM CDT/ FOR NORTHEASTERN CHEYENNE COUNTY IN EAST CENTRAL
COLORADO...SOUTHEASTERN YUMA COUNTY IN NORTHEASTERN COLORADO...
EASTERN KIT CARSON COUNTY IN EAST CENTRAL COLORADO...NORTHERN WALLACE
COUNTY IN WEST CENTRAL KANSAS...CHEYENNE AND SHERMAN COUNTIES IN
NORTHWESTERN KANSAS...

At 826 PM MDT/926 PM CDT/, severe thunderstorms were located along a
line extending from 14 miles west of St. Francis to 4 miles southeast
of Bonny Reservoir to 8 miles south of Bethune, moving east at 30
mph.

These are very dangerous storms.

HAZARD...80 mph wind gusts.

SOURCE...Radar indicated.

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...
Goodland, Burlington, St. Francis, Kanorado, Ruleton, Bonny Reservoir
and Bird City.

People attending Road Side Park - South of EM Building should seek
safe shelter immediately!

This includes the following highways...
 Interstate 70 in Kansas between mile markers 0 and 35.
 Interstate 70 in Colorado between mile markers 434 and 450.
 Highway 385 between mile markers 164 and 239.

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 4003 10205 4000 10205 4000 10141 3914 10139
      3913 10148 3894 10148 3894 10234 4000 10234
TIME...MOT...LOC 0226Z 270DEG 28KT 3980 10206 3956 10212 3918 10244 

HAIL...<.75IN
WIND...80MPH
 
$$

Vincent
879 
WWUS53 KGLD 270234
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
834 PM MDT Fri Jun 26 2020

COC017-063-125-KSC023-181-199-270330-
/O.CON.KGLD.SV.W.0086.000000T0000Z-200627T0330Z/
Cheyenne CO-Yuma CO-Kit Carson CO-Wallace KS-Cheyenne KS-Sherman KS-
834 PM MDT Fri Jun 26 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM
MDT/1030 PM CDT/ FOR NORTHEASTERN CHEYENNE COUNTY IN EAST CENTRAL
COLORADO...SOUTHEASTERN YUMA COUNTY IN NORTHEASTERN COLORADO...
EASTERN KIT CARSON COUNTY IN EAST CENTRAL COLORADO...NORTHERN WALLACE
COUNTY IN WEST CENTRAL KANSAS...CHEYENNE AND SHERMAN COUNTIES IN
NORTHWESTERN KANSAS...

At 832 PM MDT/932 PM CDT/, severe thunderstorms were located along a
line extending from 10 miles west of St. Francis to 7 miles southeast
of Bonny Reservoir to 16 miles south of Burlington, moving east at 30
mph.

These are very dangerous storms.

HAZARD...60 to 80 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

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...
Goodland, Burlington, St. Francis, Kanorado, Ruleton, Bonny Reservoir
and Bird City.

People attending Road Side Park - South of EM Building should seek
safe shelter immediately!

This includes the following highways...
 Interstate 70 in Kansas between mile markers 0 and 35.
 Interstate 70 in Colorado between mile markers 434 and 450.
 Highway 385 between mile markers 164 and 239.

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 4003 10205 4000 10205 4000 10141 3914 10139
      3913 10148 3894 10148 3894 10234 4000 10234
TIME...MOT...LOC 0232Z 268DEG 27KT 3980 10199 3956 10204 3907 10230 

HAIL...0.75IN
WIND...80MPH
 
$$

Vincent
319 
WWUS53 KGLD 270249
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
849 PM MDT Fri Jun 26 2020

COC017-063-125-KSC023-181-199-270330-
/O.CON.KGLD.SV.W.0086.000000T0000Z-200627T0330Z/
Cheyenne CO-Yuma CO-Kit Carson CO-Wallace KS-Cheyenne KS-Sherman KS-
849 PM MDT Fri Jun 26 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM
MDT/1030 PM CDT/ FOR NORTHEASTERN CHEYENNE COUNTY IN EAST CENTRAL
COLORADO...SOUTHEASTERN YUMA COUNTY IN NORTHEASTERN COLORADO...
EASTERN KIT CARSON COUNTY IN EAST CENTRAL COLORADO...NORTHERN WALLACE
COUNTY IN WEST CENTRAL KANSAS...CHEYENNE AND SHERMAN COUNTIES IN
NORTHWESTERN KANSAS...

At 849 PM MDT/949 PM CDT/, severe thunderstorms were located along a
line extending from 5 miles west of St. Francis to 8 miles north of
Ruleton to 17 miles south of Burlington, moving east at 30 mph.

HAZARD...60 mph wind gusts and dime to penny size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Goodland, Burlington, St. Francis, Kanorado, Ruleton, Bonny Reservoir
and Bird City.

People attending Road Side Park - South of EM Building should seek
safe shelter immediately!

This includes the following highways...
 Interstate 70 in Kansas between mile markers 0 and 35.
 Interstate 70 in Colorado between mile markers 434 and 450.
 Highway 385 between mile markers 164 and 228.

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 3991 10220 4000 10205 4000 10141 3914 10139
      3913 10148 3894 10148 3894 10234 3981 10234
TIME...MOT...LOC 0249Z 284DEG 26KT 3978 10189 3946 10193 3906 10218 

HAIL...0.75IN
WIND...60MPH
 
$$

Vincent
866 
WWUS53 KGLD 270300
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
900 PM MDT Fri Jun 26 2020

COC017-063-125-KSC023-181-199-270330-
/O.CON.KGLD.SV.W.0086.000000T0000Z-200627T0330Z/
Cheyenne CO-Yuma CO-Kit Carson CO-Wallace KS-Cheyenne KS-Sherman KS-
900 PM MDT Fri Jun 26 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM
MDT/1030 PM CDT/ FOR NORTHEASTERN CHEYENNE COUNTY IN EAST CENTRAL
COLORADO...SOUTHEASTERN YUMA COUNTY IN NORTHEASTERN COLORADO...
EASTERN KIT CARSON COUNTY IN EAST CENTRAL COLORADO...NORTHERN WALLACE
COUNTY IN WEST CENTRAL KANSAS...CHEYENNE AND SHERMAN COUNTIES IN
NORTHWESTERN KANSAS...

At 858 PM MDT/958 PM CDT/, severe thunderstorms were located along a
line extending from 4 miles south of St. Francis to near Goodland to
12 miles northwest of Weskan, moving east at 50 mph.

HAZARD...60 mph wind gusts and penny size hail. The observation in 
         Burlington reported 41 mph sustained winds with gusts to 55 
         mph at 845 PM MDT.

SOURCE...Radar indicated.

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

Locations impacted include...
Goodland, Burlington, St. Francis, Kanorado, Ruleton, Bonny Reservoir
and Bird City.

People attending Road Side Park - South of EM Building should seek
safe shelter immediately!

This includes the following highways...
 Interstate 70 in Kansas between mile markers 0 and 35.
 Interstate 70 in Colorado between mile markers 434 and 450.
 Highway 385 between mile markers 164 and 220.

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 3987 10216 4000 10205 4000 10141 3914 10139
      3913 10148 3894 10148 3894 10234 3967 10234
TIME...MOT...LOC 0258Z 268DEG 42KT 3971 10182 3937 10169 3901 10208 

HAIL...0.75IN
WIND...60MPH
 
$$

Vincent
134 
WWUS53 KGLD 270323
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
923 PM MDT Fri Jun 26 2020

COC125-270330-
/O.CAN.KGLD.SV.W.0086.000000T0000Z-200627T0330Z/
Yuma CO-
923 PM MDT Fri Jun 26 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN YUMA COUNTY IS
CANCELLED...

The storms which prompted the warning have moved east of Yuma county 
into Kansas. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 300 AM MDT/400 
AM CDT/ for northwestern and west central Kansas.

LAT...LON 3932 10204 3976 10205 3978 10140 3914 10139
      3913 10148 3894 10148 3894 10234 3913 10220
TIME...MOT...LOC 0320Z 280DEG 25KT 3956 10155 3935 10148 3896 10181 

$$

COC017-063-KSC023-181-199-270330-
/O.CON.KGLD.SV.W.0086.000000T0000Z-200627T0330Z/
Cheyenne CO-Kit Carson CO-Wallace KS-Cheyenne KS-Sherman KS-
923 PM MDT Fri Jun 26 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM
MDT/1030 PM CDT/ FOR NORTHEASTERN CHEYENNE AND SOUTHEASTERN KIT
CARSON COUNTIES IN EAST CENTRAL COLORADO...NORTHERN WALLACE COUNTY IN
WEST CENTRAL KANSAS...SOUTHERN CHEYENNE AND SHERMAN COUNTIES IN
NORTHWESTERN KANSAS...

At 920 PM MDT/1020 PM CDT/, severe thunderstorms were located along a
line extending from 13 miles south of Bird City to 5 miles west of
Brewster to 5 miles northwest of Sharon Springs, moving east at 30
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Goodland, St. Francis, Kanorado, Ruleton, Bird City, Edson and
Wheeler.

This includes the following highways...
 Interstate 70 in Kansas between mile markers 1 and 35.
 Highway 385 between mile markers 166 and 168.

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 3932 10204 3976 10205 3978 10140 3914 10139
      3913 10148 3894 10148 3894 10234 3913 10220
TIME...MOT...LOC 0320Z 280DEG 25KT 3956 10155 3935 10148 3896 10181 

HAIL...<.75IN
WIND...60MPH
 
$$

Vincent

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Goodland, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 26, 7:15 PM MDT, 59 minutes earlier.

Area forecast discussion, Jun 26, 7:15 PM MDT, 59 minutes before
Area Forecast Discussion
National Weather Service Goodland KS
715 PM MDT Fri Jun 26 2020

.UPDATE...
Issued at 712 PM MDT Fri Jun 26 2020

A Severe Thunderstorm Watch has been issued for our Southwestern
Nebraska and Northwestern Kansas counties. The watch will be in
effect through 3 a.m. MDT. Gusty winds, blowing dust resulting in
reduced visibility, hail to quarter size, and locally heavy
rainfall will be possible with any storms. A Severe Thunderstorm
Watch remains in effect for Yuma, Kit Carson, and Cheyenne
counties in Colorado until 9 p.m. MDT.

&&

.SHORT TERM...(This evening through Saturday)
Issued at 126 PM MDT Fri Jun 26 2020

As of 2 pm CDT...1 pm MDT...skies across the Tri-State Region are
clear. Temperatures are in the low to upper 80s with winds generally
from the north to northeast at 5-15 mph, occasionally gusting to 25
mph. At the surface, a cold front passed through this morning. The
cold front is currently located roughly from Phillipsburg, Kansas to
Syracuse, KS or so but has become quite diffuse and hard to pinpoint
the location. A surface trough/axis of low pressure is also located
across western Kansas and into eastern Colorado. A shortwave
trough...albeit weak...is moving across Utah and Colorado right now.
Latest radar and satellite trends indicate storms developing over
the Rockies, particularly the Front Range in the NWS Boulder
forecast area. These are the storms are expected to eventually move
through the NWS Goodland area. Severe Thunderstorm Watch 306 has
now been issued for all counties across eastern Colorado through 9
pm MDT tonight.

For this afternoon, anticipating quiet weather for the most part.
Current mesoanalysis indicates instability is building across the
area. However, there is a large amount of MLCIN...up to -100 to -150
J/kg of CIN...that will limit any convective activity until later.

For this evening, this is when we are expecting storms to progress
across the forecast area. Storms forming along the Rockies will
eventually start forming a common cold pool, leading to formation of
a larger complex or two. It is these complexes that we need to worry
about. Environment is favorable for severe storms. First,
instability consists of SBCape of 1000-2000 J/kg, 850-500 mb lapse
rates of 8 C/km, and DCape of 1000-1500 J/kg. Shear is also
favorable for severe weather with 0-6 km effective bulk shear
projected to be around 35-45 kts and 0-3 km SRH of 100-150 m2/s2.
The amount of instability and shear will allow for storms to be
severe as they move in from the west. Due to the nature of the
storms as they move in (a complex), anticipate wind gusts to 70 mph
and blowing dust to be the primary threats with these storms. Storms
may also be capable of smaller hail (quarter size or less), brief
heavy downpours, and frequent cloud to ground lightning.

Storms are expected to begin moving into eastern Colorado between 4-
6 pm MDT, crossing into Kansas between 6-8 pm MDT, and exiting into
north central kansas by 2 am MDT. There may be some other storms
that form over northwest Kansas ahead of the main complex. These
elevated storms could form around midnight MDT and would be capable
of hail to the size quarters and heavy rainfall. Am not anticipating
a flash flood threat to develop as a result of the storms moving at
a higher pace, but any areas that observe repeated rounds of rain
could see a few instances of high water in ditches.

For Saturday, the main focus is once again on potential storms. The
setup is almost identical to today's forecast...storms should form
along the Rockies and gradually spread east, forming into a larger
complex along the way. Severe weather indices may actually be
slightly better for Saturday with SBCape of 1750-2250 J/kg, 850-500
mb lapse rates of 8-8.5 C/km, 0-6 km effective bulk shear of 30-40
kts, and 0-3 km helicity 100-200 m2/s2. The main threats will once
again be damaging winds, with secondary threats of blowing dust,
large hail, and heavy downpours. It will also be interesting to see
how Friday's storms will impact the environment for Saturday's
storms, so there is a little uncertainty on how all of this will
play out. Regardless, all need to keep a close watch on the weather
for Friday and Saturday as multiple rounds of storms are possible
during the evening hours.

.LONG TERM...(Sunday through Friday)
Issued at 226 PM MDT Fri Jun 26 2020

For the extended period, the models start out showing an upper air
ridge over the local area on Sunday. Models also show an upper
level low traveling in from Pacific Northwest U.S. while another
upper level low starts to travel down into the Northeastern U.S on
Sunday. This setup causes an upper air ridge to reside over the
Plains between two upper air troughs on Sunday and Monday. On
Tuesday, models show the front side of western upper air trough to
move over CO then advancing over the Tri-State area late Tuesday
into Wednesday. The trough lifts to the north on Thursday while an
upper air high develops over western TX. An upper air shortwave
trough also passes over the Tri-State area late Thursday into
Friday. The aforementioned upper air high gradually moves
northward going into Friday.

At the surface, dry conditions are expected throughout the CWA at
the beginning of the week. However, isolated showers and
thunderstorms cannot be ruled entirely at this time Sunday and
Monday. Showers and thunderstorms chances return Tuesday evening and
these chances increase on Wednesday across the CWA as a cold front
moves through the area. Thursday and Friday also show chances for
showers and thunderstorms associated with the upper air shortwave
trough coming through the area. There is a possibility for
elevated fire weather for the western counties of the CWA for
Sunday through Tuesday as forecasted RH values begin to drop
Sunday below 20%, but current models show wind gust speeds
expected below the 25 mph threshold at this time.

Sunday and Monday should see a return of highs reaching the upper
90s across the CWA with some parts hitting possibly 100 degrees.
Middle 90s are the expected Tuesday's high temps. Wednesday and
Thursday's high temps for the CWA will return to the upper 80s and
lower 90s as precipitation cools the area. High temps for Friday
across the CWA are expected to be in the lower 90s. Overnight low
temps for the CWA are expected to range between the middle 50s and
the upper 60s over the forecast period with the eastern counties
of the CWA possibly reaching lower 70s on Monday.

&&

.AVIATION...(For the 00Z TAFS through 00Z Saturday evening)
Issued at 528 PM MDT Fri Jun 26 2020

VFR conditions are expected to prevail at KGLD terminal through much
of the forecast period.  A few strong to severe storms will be
possible in the vicinity of the terminal this evening.  Any storms
that move through will have the potential to produce locally heavy
rain, hail, gusty winds, and blowing dust.  Visibilities may be
reduced for a time due to blowing dust and heavy rain.  Due to
confidence in coverage of storms, have opted to maintain a tempo
group at this time for storms.  As storms move through the region,
winds are expected to shift to the west.  Winds will become
northwesterly around 05Z at 8kts, continuing to transition to the
north-northeast after midnight.

At KMCK terminal, VFR conditions are expected to persist through
much of the forecast period. Showers and thunderstorms will be
possible in the vicinity of the terminal around 03Z and into the
evening. Any storms that develop will have the potential to produce
heavy rain, gusty winds, blowing dust, and hail.  Confidence in
overall coverage at KMCK is a little less certain, so made mention
of vicinity storms.  Storm chances will diminish around 09Z.  As
storms move out, stratus may develop which could result in lowered
ceilings.  Brought down ceilings a little around 09Z but kept at VFR
for now due to uncertainty.  Winds will become light and variable
through the overnight hours.

&&

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

UPDATE...AW
SHORT TERM...RRH
LONG TERM...MRC
AVIATION...AW
Hazardous weather outlook, Jun 26, 7:12 PM MDT, 1 hour 2 minutes before
Hazardous Weather Outlook
National Weather Service Goodland KS
712 PM MDT Fri Jun 26 2020

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-280115-
Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins-
Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-
Greeley-Wichita-Dundy-Hitchcock-Red Willow-
712 PM MDT Fri Jun 26 2020 /812 PM CDT Fri Jun 26 2020/

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

.DAY ONE...TODAY...

Storms are ongoing in Eastern Colorado and Southwest Nebraska this
evening. These storms will continue to move from west to east over
the next several hours. A Severe Thunderstorm Watch remains in effect
until 9 PM MDT for Yuma, Kit Carson, and Cheyenne counties in
Colorado. A Severe Thunderstorm Watch remains in effect for
Southwestern Nebraska and Northwestern Kansas until 3 AM MDT. The
main threat with any storms will be wind gusts to 70 MPH, reduced
visibility due to blowing dust, hail up to quarters in diameter, and
locally heavy rain.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH FRIDAY...

On Saturday, another round of strong to possibly severe
thunderstorms will move into the Tri-State Area from the west
between 4 and 6 PM MDT. Hail up to quarter size and wind gusts
around 70 MPH will be the main threats.

Elevated to near critical fire weather conditions are expected
Sunday, Monday, and Tuesday afternoons across East Central Colorado
into parts of West Central Kansas.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed this evening. Any reports of hail,
wind gusts, blowing dust, reduced visibility, or wind damage are
appreciated.

In the hours before

Special weather statement, Jun 26, 7:21 PM MDT, 53 minutes before
Special Weather Statement
National Weather Service Goodland KS
721 PM MDT Fri Jun 26 2020

COZ090-KSZ001-270200-
Yuma County CO-Cheyenne KS-
721 PM MDT Fri Jun 26 2020

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL YUMA COUNTY IN
NORTHEASTERN COLORADO AND NORTHWESTERN CHEYENNE COUNTIES IN
NORTHWESTERN KANSAS UNTIL 800 PM MDT/900 PM CDT/...

At 720 PM MDT/820 PM CDT/, Doppler radar was tracking a strong
thunderstorm 12 miles south of Wray, moving east at 10 mph.

Nickel size hail and wind gusts up to 55 mph are possible with this
storm.

Locations impacted include...
Beecher Island and Vernon.

This includes Highway 385 between mile markers 223 and 237.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT/1000
PM CDT/ for northeastern Colorado. A Severe Thunderstorm Watch also
remains in effect until 300 AM MDT/400 AM CDT/ for northwestern
Kansas.

LAT...LON 4000 10193 3970 10193 3982 10238 3999 10239
      4000 10208
TIME...MOT...LOC 0120Z 266DEG 8KT 3990 10222

Vincent
Special weather statement, Jun 26, 7:42 PM MDT, 32 minutes before
Special Weather Statement
National Weather Service Goodland KS
742 PM MDT Fri Jun 26 2020

COZ090-091-270230-
Kit Carson County CO-Yuma County CO-
742 PM MDT Fri Jun 26 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN YUMA AND EASTERN KIT
CARSON COUNTIES UNTIL 830 PM MDT...

At 741 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 14 miles south of Eckley to 4 miles southeast
of Stratton. Movement was southeast at 25 mph.

Pea to dime size hail and wind gusts up to 55 mph will be possible
with these storms.

Locations impacted include...
Burlington, Stratton, Bonny Reservoir, Bethune, Beecher Island,
Vernon and Hale.

This includes the following highways...
 Interstate 70 in Colorado between mile markers 420 and 450.
 Highway 385 between mile markers 175 and 233.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall with these storms may lead to localized
flooding. Do not drive your vehicle through flooded roadways.

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

&&

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
northeastern and east central Colorado.

LAT...LON 3998 10265 3992 10206 3905 10205 3921 10261
TIME...MOT...LOC 0141Z 293DEG 24KT 3991 10257 3927 10253

Vincent
Local storm report, Jun 26, 7:48 PM MDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
748 PM MDT FRI JUN 26 2020

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

0735 PM     HAIL             3 ESE VERNON            39.92N 102.23W
06/26/2020  E0.70 INCH       YUMA               CO   PUBLIC

            CALLER REPORTED PEA TO DIME SIZE HAIL. TIME
            ESTIMATED BY RADAR AND CALLER.

&&

KMK
Local storm report, Jun 26, 7:56 PM MDT, 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
756 PM MDT FRI JUN 26 2020

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

0745 PM     HAIL             3 WSW BEECHER ISLAND    39.86N 102.18W
06/26/2020  E1.00 INCH       YUMA               CO   PUBLIC

            CALLER REPORTED HAIL FROM PEA TO QUARTER
            SIZED. TIME ESTIMATED BY RADAR.

&&

KMK
Special weather statement, Jun 26, 8:04 PM MDT, 10 minutes before
Special Weather Statement
National Weather Service Goodland KS
804 PM MDT Fri Jun 26 2020

COZ092-270300-
Cheyenne County CO-
804 PM MDT Fri Jun 26 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CHEYENNE COUNTY IN
EAST CENTRAL COLORADO UNTIL 900 PM MDT...

At 804 PM MDT, Doppler radar was tracking a strong thunderstorm 14
miles east of Karval, or 43 miles south of Flagler, moving east at 30
mph.

Pea size hail and wind gusts up to 55 mph will be possible with this
storm.

Locations impacted include...
Kit Carson, Wild Horse and Aroya.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
east central Colorado.

LAT...LON 3869 10317 3869 10316 3885 10316 3886 10271
      3861 10270 3861 10317
TIME...MOT...LOC 0204Z 267DEG 24KT 3868 10326

Vincent
Local storm report, Jun 26, 8:07 PM MDT, 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
807 PM MDT FRI JUN 26 2020

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

0750 PM     HAIL             3 WSW BEECHER ISLAND    39.86N 102.18W
06/26/2020  E1.75 INCH       YUMA               CO   PUBLIC

            CALLER REPORTED HAIL FROM PEA TO GOLF BALL.
            TIME ESTIMATED BY RADAR AND CALLER.

&&

KMK

The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 26, 6:39 PM MDTSpecial Weather StatementGLDYuma51 min
Jun 26, 6:55 PM MDTSpecial Weather StatementGLDYuma65 min
Jun 26, 7:21 PM MDTSpecial Weather StatementGLDYuma39 min
Jun 26, 7:25 PM MDTSevere Thunderstorm WarningGLDYuma65 min
Jun 26, 7:42 PM MDTSpecial Weather StatementGLDKit Carson48 min
Jun 26, 7:51 PM MDTSevere Thunderstorm WarningGLDKit Carson, Yuma54 min
Jun 26, 8:04 PM MDTSpecial Weather StatementGLDCheyenne56 min
Jun 26, 9:17 PM MDTSevere Thunderstorm WarningGLDLogan, Sheridan, Sherman, Thomas, Wallace73 min
Jun 26, 9:26 PM MDTSpecial Weather StatementGLDGraham34 min
Jun 26, 9:59 PM MDTSpecial Weather StatementGLDGreeley, Wichita61 min
Jun 26, 10:33 PM MDTSpecial Weather StatementGLDGove, Logan, Sheridan, Thomas72 min
Jun 26, 11:25 PM MDTSpecial Weather StatementGLDWichita35 min
Jun 26, 11:35 PM MDTSpecial Weather StatementGLDGove, Graham, Sheridan55 min
Jun 27, 12:29 AM MDTSpecial Weather StatementGLDGove, Graham31 min
Jun 27, 12:44 AM MDTSevere Thunderstorm WarningGLDGraham46 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2020Severe Thunderstorm Warnings in Kansas, 2020Every severe thunderstorm warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.