Severe Thunderstorm Warning 144, NWS Goodland, KS

644 
WWUS53 KGLD 261950
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
150 PM MDT MON JUN 26 2017

COC017-063-262030-
/O.CON.KGLD.SV.W.0144.000000T0000Z-170626T2030Z/
Cheyenne CO-Kit Carson CO-
150 PM MDT MON JUN 26 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM MDT
FOR NORTHWESTERN CHEYENNE AND SOUTHWESTERN KIT CARSON COUNTIES IN
EAST CENTRAL COLORADO...

At 146 PM MDT, a severe thunderstorm was located 11 miles south of
Seibert, moving south at 20 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts. 

SOURCE...Public. At 125 PM ping pong size hail was reported 
         five miles east southeast of Flagler.  

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees. 

This severe thunderstorm will remain over mainly rural areas of
northwestern Cheyenne and southwestern Kit Carson Counties in east
central Colorado.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Goodland.

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

&&

LAT...LON 3921 10304 3926 10280 3892 10259 3884 10297
TIME...MOT...LOC 1946Z 344DEG 16KT 3913 10289 

HAIL...1.50IN
WIND...60MPH
 
$$

Buller

691 
WWUS53 KGLD 262004
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
204 PM MDT MON JUN 26 2017

COC017-063-262030-
/O.CON.KGLD.SV.W.0144.000000T0000Z-170626T2030Z/
Cheyenne CO-Kit Carson CO-
204 PM MDT MON JUN 26 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM MDT
FOR NORTHWESTERN CHEYENNE AND SOUTHWESTERN KIT CARSON COUNTIES IN
EAST CENTRAL COLORADO...

At 203 PM MDT, a severe thunderstorm was located 17 miles east of
Boyero, or 20 miles south of Flagler, moving south at 30 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees. 

This severe thunderstorm will remain over mainly rural areas of
northwestern Cheyenne and southwestern Kit Carson Counties in east
central Colorado.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Goodland.

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

&&

LAT...LON 3921 10304 3923 10294 3890 10267 3884 10297
TIME...MOT...LOC 2003Z 349DEG 25KT 3902 10296 

HAIL...1.50IN
WIND...60MPH
 
$$

Buller

528 
WWUS53 KGLD 262024
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
224 PM MDT MON JUN 26 2017

COC017-063-262034-
/O.EXP.KGLD.SV.W.0144.000000T0000Z-170626T2030Z/
Cheyenne CO-Kit Carson CO-
224 PM MDT MON JUN 26 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CHEYENNE AND
SOUTHWESTERN KIT CARSON COUNTIES IN EAST CENTRAL COLORADO WILL EXPIRE
AT 230 PM MDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning will be allowed to expire.  However heavy rain
is still possible with this thunderstorm.

LAT...LON 3921 10304 3923 10294 3890 10267 3884 10297
TIME...MOT...LOC 2024Z 334DEG 17KT 3894 10291 

$$

Buller

Area Forecast Discussion
National Weather Service Goodland KS
1251 PM MDT Mon Jun 26 2017

.UPDATE...
Issued at 1251 PM MDT Mon Jun 26 2017

Update to forecast to add in a slight chance for trw for the rest
of the CWA for the afternoon hrs. Latest radar image showing
convective development over NE Colorado where no pops are in.

&&

.SHORT TERM...(Today through Wednesday night)
Issued at 340 AM MDT Mon Jun 26 2017

Today-tonight...once again we find ourselves under quite a bit of
moisture below 700mb through the day and into the evening before
lifting east/northeast away from the area toward sunrise Tuesday
morning. For the shorter term will have to deal with stratus and fog
as abundant boundary layer moisture has moved into the area from the
south. Am expecting this to continue through mid morning before
dissipating. However, looks like it redevelops after midnight.

Looking at precipitation chances, sufficient instability is in place
despite meager mid level moisture. NAM showing small pockets of
moisture moving down from the north supporting at least some
isolated thunderstorms across the eastern 1/2 of the area. Any
activity should be south of the area during the early to mid evening
hours. Will have to watch the our Colorado counties during the
evening as well as front range convection earlier in the period
tries to move east-southeast into the area. After midnight elevated
cin increases rather substantially and should limit any further
development.

High temperatures today in the low 80s. Low temperatures in the mid
50s to low 60s.

Tuesday-Tuesday night...southerly winds quickly increase in the
morning becoming sustained in the 20 to 30 mph range with higher
gusts through the late afternoon. Models continue to advertise an
upper trough axis to move into far eastern Colorado in the 3PM MDT
to 6 PM MDT timeframe with showers and thunderstorms possible. The
trough axis continues east through midnight and should be out of the
area by if not before sunrise. 850mb temperatures from the past 5
days support high temperatures in the low to upper 90s while nearly
all other guidance is several degrees cooler. Wont make any
significant adjustments to forecast at this time and stay the course
with readings around 90/low 90s. Low temperatures in the mid 50s to
around 60 in far eastern Colorado with low to upper 60s elsewhere.

Wednesday-Wednesday night...upper flow shifts to zonal behind
Tuesday nights system. Models bring a weather disturbance into far
eastern Colorado in the 3PM MDT-6PM MDT timeframe supporting current
forecast of thunderstorms. This disturbance also moves east across
the area during the night providing a chance for
showers/thunderstorms. High temperatures in the upper 80s to low
90s. Low temperatures again in the mid 50s to near 60 in far eastern
Colorado with low to mid 60s elsewhere.

.LONG TERM...(Thursday through Sunday)
Issued at 309 AM MDT Mon Jun 26 2017

Thursday: Looks to be another day with the potential for strong to
severe storms during the afternoon hours through the overnight.
Model soundings show MUCAPE around 2000-2500 J/kg, DCAPE near 1700
J/kg, and 0-6km bulk shear of 35-50kt across the area. Damaging
winds and hail look to be the biggest threats with any storms that
form. With PWATs around 1.50 inches, will also have to watch for the
possibility of heavy rain accompanying storms during the evening.

Friday-Sunday: Weak cold front pushes through the area late Thursday
or early Friday. Will have a slight chance of showers and
thunderstorms Friday night. Models differ for the rest of the
period. GFS is showing cooler daytime temps and wetter conditions
through Sunday evening than the ECMWF. GFS maintains NW flow aloft
over the area Saturday and Sunday, whereas the ECMWF moves upper
level ridging into the area which creates a decent amount of
subsidence over the CWA. Forecast is essentially a blend of the two
on temps and PoPs. Should be noted that if the GFS verifies, CWA
could see weekend conditions very similar to this past weekend with
cooler temps, cloud cover, and precipitation.

&&

.AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon)
Issued at 1111 AM MDT Mon Jun 26 2017

For KGLD...VFR conditions thru the forecast period w/ a scattered
low/mid cloud mix. Winds...W 5-10kts thru 21z then ESE around
10kts. By 14z Tuesday...S 10-20kts. LLWS 05z-14z Tuesday
160@40kts.

For KMCK...VFR conditions thru the forecast period w/ a scattered
to broken low/mid cloud mix. Winds...light/variable thru
1930z...then ENE around 10kts thru 08z Tuesday. By 08z...ESE
5-10kts increasing to 10-20kts by 14z. LLWS 08z-14z 140@35kts.

&&

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

UPDATE...JN
SHORT TERM...99
LONG TERM...SME
AVIATION...JN

Hazardous Weather Outlook
National Weather Service Goodland KS
941 AM MDT Mon Jun 26 2017

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-271545-
Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins-
Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-
Greeley-Wichita-Dundy-Hitchcock-Red Willow-
941 AM MDT Mon Jun 26 2017 /1041 AM CDT Mon Jun 26 2017/

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

.DAY ONE...TODAY AND TONIGHT...

Isolated thunderstorms are possible early this afternoon through
tonight. One or two severe storms are possible with large hail and
damaging winds the primary threats.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

Severe thunderstorms will be possible each afternoon Tuesday through
Thursday. Large hail and damaging winds will be the main threats.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated today or tonight.

Special Weather Statement
National Weather Service Goodland KS
116 PM MDT MON JUN 26 2017

COZ091-092-262000-
Kit Carson County CO-Cheyenne County CO-
116 PM MDT MON JUN 26 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CHEYENNE AND WESTERN
KIT CARSON COUNTIES IN EAST CENTRAL COLORADO UNTIL 200 PM MDT...

At 115 PM MDT, Doppler radar was tracking a strong thunderstorm near
Seibert, moving south at 25 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Seibert and Vona.

This includes Interstate 70 in Colorado between mile markers 398 and
416.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3931 10303 3954 10283 3896 10244 3885 10293
TIME...MOT...LOC 1915Z 346DEG 23KT 3926 10290

Buller