Hail and Damaging Winds in Colorado, June 19, 2021

Area Forecast Discussion
National Weather Service Pueblo CO
202 PM MDT Sat Jun 19 2021

.SHORT TERM...(This evening through Sunday)
Issued at 153 PM MDT Sat Jun 19 2021

Currently...satellite imagery shows a robust upper shortwave trough
moving across north-central Colorado early this afternoon.  This has
led to widespread shower and thunderstorm coverage over the
Mountains, into the I-25 corridor.  A few of these storms have
become strong, with small hail and gusty outflow winds, along with
locally heavy rainfall.  Temperatures are warm, but cooler than the
past couple of days, with mid 80s to lower 90s across the Plains.
Southeasterly winds have kept moisture pooled across the Plains with
dewpoints in the upper 40s to lower 60s.

Rest of today...the upper shortwave is forecast to drop southeast
across the Palmer Divide and into the Plains by this evening.
Abundant low level moisture will remain in place, and allow for
continued destabilization this afternoon, with MLCAPE values in
excess of 1500 j/kg.  Where the deeper moisture exists near the
Kansas border, MLCAPE values could approach 2000 j/kg.  Shear will
only increase this afternoon as the upper disturbance moves across
the area.  0-6 km bulk shear of around 30 kts is expected.  As
storms increase in coverage this afternoon and shift east into the
Plains encountering this more favorable environment, a few could
become strong to severe.  Hail to golfballs along with wind gusts to
near 65 mph may be possible.  The greatest severe threat looks to be
from the Palmer Divide, south to Highway 50, to near Lamar.  In
addition to the severe threat, flash flooding on area burn scars may
be possible.

Tonight...the upper disturbance is forecast to shift eastward into
Kansas this evening, with all convection shifting east with it.
Expect thunderstorms to come to an end by midnight, with clearing
conditions into Sunday morning.  Overnight lows will once again be
mild, with 50s and 60s across the region.

Sunday...another round of severe storms are possible by the
afternoon hours.  Another upper disturbance embedded in the
northwesterly flow aloft by the afternoon.  At the surface, a
boundary is forecast to back across the Plains by late morning,
turning flow easterly across the Plains.  This will help keep
moisture pooled across the Plains, mainly north of a Pueblo to
Springfield line.  Dewpoints should remain in the upper 40s to mid
50s on the north side the boundary.  A band of instability with
MLCAPE values around 1600 j/kg is expected along the boundary by mid
afternoon.  Thunderstorms are expected to initiate by mid afternoon
along this boundary.  Hail and gusty winds will be the primary risks
with stronger storms.  Hail to the size of golfballs and wind gusts
in excess of 60 mph will be possible.  In addition, hodographs
appear to have a brief period of low level curvature which could
lead to a low tornado risk, primarily over the Palmer Divide area.
Mozley

.LONG TERM...(Sunday night through Saturday)
Issued at 153 PM MDT Sat Jun 19 2021

Sunday night-Monday...

With the cold front expected to pass south over the area on Sunday,
and with the low-level moisture in place, showers and thunderstorms
will be possible across both the plains and eastern mountains Sunday
night through Monday morning. A few of the storms Sunday night could
potentially be strong, producing hail, gusty outflow winds, and
locally heavy rainfall which could lead to concerns for flash
flooding. On Monday, continued upslope flow at low levels will
contribute to both continued cloud cover over the eastern half of
our area, as well as isolated to scattered showers and thunderstorms
over and near the eastern mountains Monday afternoon and evening.

High temperatures will also be taking a break on Monday thanks to
the moisture and continued cloudy skies, potentially dropping into
the mid-low 70s before ramping back up the rest of the week.

Tuesday-Wednesday...

The upper-ridge to our west will begin to build in over the area
starting Tuesday and into the middle of next week, which will assist
in bringing temperatures back up above averages and drying things
out once again. High temperatures will likely be back up in the
upper-90s to low-100s over the plains, and sticking around the upper-
80s over the valleys. There may be enough residual moisture to get
some isolated showers during the afternoon hours, but these would be
confined to over and near the higher terrain.

Thursday-Onwards...

Latest models still indicate that some energy pushing in to the west
will flatten the ridge overhead on Thursday, leading to the
potential for some more widespread showers and thunderstorms. Storms
would likely form over the higher terrain during the afternoon, and
with somewhat weak westerly flow forecasted aloft, would have the
potential to spread eastward onto the plains. This could potentially
lower daytime high temperatures somewhat, but above-average
temperatures are still expected overall through the end of the week
at least.

&&

.AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon)
Issued at 153 PM MDT Sat Jun 19 2021

Showers and thunderstorms will be possible at all three terminals
this afternoon and evening, especially at KCOS and KPUB.  Gusty
outflow winds to near 30 kts, if not higher, will be possible with
storms.  Briefly reduced CIGS and VIS are possible with
thunderstorms.  Expect VFR conditions from late evening into Sunday
morning.  A frontal boundary will push south across KCOS and KPUB by
late morning turning winds northeasterly.  Another round of
afternoon thunderstorms will be possible at KCOS and KPUB. Mozley

&&

.PUB WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch until 10 PM MDT this evening for COZ060>062-
072>075-077>080-087.

&&

SHORT TERM...MOZLEY
LONG TERM...GARBEROGLIO
AVIATION...MOZLEY

Hazardous Weather Outlook
National Weather Service Pueblo CO
1132 AM MDT Sat Jun 19 2021

COZ058>089-093>099-201745-
Western Mosquito Range/East Lake County Above 11000 Feet-
Leadville Vicinity/Lake County Below 11000 Feet-
Eastern Sawatch Mountains Above 11000 Feet-
Western Chaffee County Between 9000 and 11000 Feet-
Central Chaffee County Below 9000 Feet-
Western Mosquito Range/East Chaffee County Above 9000 Feet-
Saguache County West of Continental Divide Below 10000 Feet-
Saguache County East of Continental Divide Below 10000 Feet-
La Garita Mountains Above 10000 Feet-
Upper Rio Grande Valley/Eastern San Juan Mountains Below
10000 Feet-Eastern San Juan Mountains Above 10000 Feet-
Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet-
Alamosa  Vicinity/Central San Luis Valley Below 8500 Feet-
Southern San Luis Valley-
Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-
Northern Sangre de Cristo Mountains Above 11000 Feet-
Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet-
Southern Sangre de Cristo Mountains Above 11000 Feet-
Northwestern Fremont County Above 8500 Feet-
Western/Central Fremont County Below 8500 Feet-
Wet Mountain Valley Below 8500 Feet-
Wet Mountains between 6300 and 10000 Feet-
Wet Mountains Above 10000 Feet-
Teller County/Rampart Range Above 7500 Feet/Pikes Peak Between
7500 And 11000 Feet-Pikes Peak Above 11000 Feet-
Canon City Vicinity/Eastern Fremont County-
Northern El Paso County/Monument Ridge/Rampart Range Below
7500 Feet-
Colorado Springs Vicinity/Southern El Paso County/Rampart Range
Below 7400 Feet-Pueblo Vicinity/Pueblo County Below 6300 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet-
Trinidad Vicinity/Western Las Animas County Below 7500 Feet-
Crowley County-La Junta Vicinity/Otero County-
Eastern Las Animas County-Western Kiowa County-
Eastern Kiowa County-Las Animas Vicinity/Bent County-
Lamar Vicinity/Prowers County-Springfield Vicinity/Baca County-
1132 AM MDT Sat Jun 19 2021

This hazardous weather outlook is for portions of central...east
central...south central and southeast Colorado.

.DAY ONE...This Afternoon and Tonight

Scattered thunderstorms will develop across the mountains this
afternoon and move across the southeast plains through this evening.
A few strong to severe thunderstorms will be possible across the
southeast plains along and east of I-25, where wind gusts up to 65
mph, hail up to 1.5 inches in diameter and locally heavy rainfall
will be possible. The strongest storms will occur east of a line
from La Junta to Springfield. Although the risk is low, an
isolated tornado can not be ruled out across the far eastern
plains between 4 PM and 7 PM, particularly across Kiowa County.

Thunderstorms across the mountains will be capable of producing
locally heavy rainfall, wind gusts up to 50 mph, lightning, and
small hail. Should a stronger storm impact a burn scar, localized
flash flooding will be possible.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

A cold front will push through eastern Colorado Sunday afternoon
and evening, with low level moisture pooling along and behind the
front supporting chances of showers and thunderstorms across the
eastern mountains and plains into early Monday morning. A few of
the storms could be strong Sunday night, producing hail, gusty
outflow winds and locally heavy rain, leading to the potential
for localized flash flooding. Continued low level upslope flow
will support isolated to scattered afternoon showers and
thunderstorms for areas over and near the eastern mountains
Monday afternoon and early evening.

Upper level ridging will build back across the Rockies Tuesday and
Wednesday, leading to temperatures warming back to above seasonal
levels once again, along with more isolated afternoon and evening
showers and storms expected through the end of the next work week.

.SPOTTER INFORMATION STATEMENT...

Weather conditions that meet reporting criteria for spotters will be
possible across the southeast mountains and plains through this
evening.

88/88

Special Weather Statement
National Weather Service Pueblo CO
234 PM MDT Sat Jun 19 2021

COZ081-085-192045-
Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below
7400 Ft CO-
Teller County/Rampart Range above 7500fT/Pike's Peak Between 7500 And
11000 Ft CO-
234 PM MDT Sat Jun 19 2021

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL EL PASO COUNTY UNTIL
245 PM MDT...

At 234 PM MDT, Doppler radar was tracking a strong thunderstorm over
Manitou Springs, or near Colorado Springs, moving east at 15 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Southern Colorado Springs, Manitou Springs, Stratmoor and Fort
Carson.

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

LAT...LON 3881 10496 3889 10493 3885 10473 3875 10479
TIME...MOT...LOC 2034Z 287DEG 14KT 3885 10490

Cohen

Special Weather Statement
National Weather Service Pueblo CO
235 PM MDT Sat Jun 19 2021

COZ063-076-077-081-083-192100-
Western/Central Fremont County Below 8500 Ft CO-
Canon City Vicinity/Eastern Fremont County CO-
Northwestern Fremont County  Above 8500Ft CO-
Western Mosquito Range/East Chaffee County above 9000Ft CO-
Teller County/Rampart Range above 7500fT/Pike's Peak Between 7500 And
11000 Ft CO-
235 PM MDT Sat Jun 19 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CHAFFEE...NORTHERN
FREMONT...SOUTHERN TELLER...WESTERN EL PASO AND NORTHWESTERN PUEBLO
COUNTIES UNTIL 300 PM MDT...

At 235 PM MDT, Doppler radar was tracking a strong thunderstorm near
Victor, or 25 miles southwest of Colorado Springs, moving east at 25
mph.

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

Locations impacted include...
Waugh Mountain, Canon City and Penrose.

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

LAT...LON 3870 10493 3847 10494 3848 10587 3870 10591
TIME...MOT...LOC 2035Z 270DEG 21KT 3863 10522

KTS

Special Weather Statement
National Weather Service Pueblo CO
246 PM MDT Sat Jun 19 2021

COZ079-083-086-192130-
Pueblo Vicinity/Pueblo County Below 6300 Feet CO-
Wet Mountains between 6300 and 10000Ft CO-
Canon City Vicinity/Eastern Fremont County CO-
246 PM MDT Sat Jun 19 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN FREMONT AND CENTRAL
PUEBLO COUNTIES UNTIL 330 PM MDT...

At 246 PM MDT, Doppler radar was tracking a strong thunderstorm 7
miles southwest of Pueblo Reservoir, or 14 miles west of Pueblo,
moving east at 35 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Pueblo, Pueblo Reservoir, Salt Creek, Blende and Pueblo West.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 Severe Thunderstorm Watch remains in effect until 900 PM MDT for
southeastern Colorado.

LAT...LON 3811 10496 3830 10494 3834 10442 3803 10443
TIME...MOT...LOC 2046Z 276DEG 30KT 3821 10487

Cohen

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
247 PM MDT SAT JUN 19 2021

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

0247 PM     HAIL             6 NNE COLORADO SPRINGS  38.91N 104.77W
06/19/2021  M0.88 INCH       EL PASO            CO   TRAINED SPOTTER

&&

Special Weather Statement
National Weather Service Pueblo CO
303 PM MDT Sat Jun 19 2021

COZ076-077-083-192130-
Western/Central Fremont County Below 8500 Ft CO-
Canon City Vicinity/Eastern Fremont County CO-
Northwestern Fremont County  Above 8500Ft CO-
303 PM MDT Sat Jun 19 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL FREMONT COUNTY
UNTIL 330 PM MDT...

At 303 PM MDT, Doppler radar was tracking a strong thunderstorm near
Waugh Mountain, or 18 miles northeast of Hayden Pass Burn Scar,
moving east at 25 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Royal Gorge and Waugh Mountain.

LAT...LON 3849 10572 3865 10571 3867 10528 3841 10531
TIME...MOT...LOC 2103Z 275DEG 22KT 3856 10563

KTS

Special Weather Statement
National Weather Service Pueblo CO
304 PM MDT Sat Jun 19 2021

COZ071-192130-
Southern San Luis Valley CO-
304 PM MDT Sat Jun 19 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN COSTILLA AND EAST
CENTRAL CONEJOS COUNTIES UNTIL 330 PM MDT...

At 304 PM MDT, Doppler radar was tracking a strong thunderstorm near
Manassa, or 21 miles south of Alamosa, moving east at 25 mph.

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

Locations impacted include...
Sanford and Mesita.

LAT...LON 3710 10592 3725 10593 3734 10559 3703 10555
TIME...MOT...LOC 2104Z 267DEG 23KT 3716 10583

KTS