Alert archive / Colorado / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 150, NWS Pueblo, CO

July 20, 2019Pueblo County, Colorado

NWS Pueblo, CO issued this severe thunderstorm warning at Jul 20, 2019, 5:08 PM MDT for Pueblo County, Colorado. It was in force for 37 min. 1 report 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: Jul 20, 2019, 5:08 PM MDT (23:08 UTC)
Expired: Jul 20, 2019, 5:45 PM MDT
In force: 37 min
Issued by: NWS Pueblo, CO
Area: Storm-based polygon
Hail: 1.75 in
Wind: 70.0 mph

County Pueblo County, CO

The radar

The Pueblo radar (KPUX), 43 km from the middle of the area, began a volume at 23:07 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

Time	Report	Where	Remark
Jul 20, 5:20 PM MDT	TSTM WND GST 62	5 Ne Blende, CO

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 12 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.

Issued	Product	Office	Lasted
Jul 20, 2:29 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.1 hours before the alert went out and 219 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1 J/kg
Mixed-layer CIN: -389 J/kg
Mixed-layer LCL: 3424 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -62 m²/s²
0-3 km storm-relative helicity: 22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

112 
WUUS55 KPUB 202308
SVRPUB
COC101-202345-
/O.NEW.KPUB.SV.W.0150.190720T2308Z-190720T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pueblo CO
508 PM MDT Sat Jul 20 2019

The National Weather Service in Pueblo has issued a

* Severe Thunderstorm Warning for...
  Central Pueblo County in southeastern Colorado...

* Until 545 PM MDT.

* At 506 PM MDT, a severe thunderstorm was located near Pueblo, 
  moving northwest at 20 mph. Other strong to severe storms were 
  also noted in northwest Pueblo county. This storm has a history of 
  producing ping pong size hail.

  HAZARD...Golf ball size hail and 70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           considerable tree damage. Wind damage is also likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Pueblo, Boone, Pueblo Reservoir, Salt Creek, Blende, Avondale,
  Pueblo West, Pueblo Depot and Pinon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3795 10410 3798 10465 3813 10493 3851 10493
      3851 10440
TIME...MOT...LOC 2306Z 133DEG 16KT 3825 10468 

HAIL...1.75IN
WIND...70MPH
 
$$

Hodanish

3 follow-up statements

265 
WWUS55 KPUB 202319
SVSPUB

Severe Weather Statement
National Weather Service Pueblo CO
519 PM MDT Sat Jul 20 2019

COC101-202345-
/O.CON.KPUB.SV.W.0150.000000T0000Z-190720T2345Z/
Pueblo CO-
519 PM MDT Sat Jul 20 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT
FOR CENTRAL PUEBLO COUNTY...

At 518 PM MDT, a severe thunderstorm was located over Pueblo
Reservoir, or near Pueblo, moving northwest at 20 mph.

HAZARD...60 mph wind gusts and half dollar size hail. At 5:17 pm, a 
         wind gusts to 60 mph was measured at the Pueblo Airport. 

SOURCE...Pueblo Airport weather station.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Pueblo, Boone, Pueblo Reservoir, Salt Creek, Blende, Avondale, Pueblo
West, Pueblo Depot and Pinon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3795 10410 3798 10465 3813 10493 3851 10493
      3851 10440
TIME...MOT...LOC 2318Z 133DEG 16KT 3829 10473 

HAIL...1.25IN
WIND...60MPH
 
$$

Hodanish

520 
WWUS55 KPUB 202329
SVSPUB

Severe Weather Statement
National Weather Service Pueblo CO
529 PM MDT Sat Jul 20 2019

COC101-202345-
/O.CON.KPUB.SV.W.0150.000000T0000Z-190720T2345Z/
Pueblo CO-
529 PM MDT Sat Jul 20 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT
FOR CENTRAL PUEBLO COUNTY...

At 527 PM MDT, a severe thunderstorm was located near Pueblo West, or
9 miles northwest of Pueblo, moving northwest at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail. Winds of 61 mph 
         were being measured at the Pueblo airport at 5:28 pm. 

SOURCE...Pueblo airport weather station.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Pueblo, Boone, Pueblo Reservoir, Salt Creek, Blende, Avondale, Pueblo
West, Pueblo Depot and Pinon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3795 10410 3798 10465 3813 10493 3851 10493
      3851 10440
TIME...MOT...LOC 2327Z 133DEG 16KT 3832 10477 

HAIL...1.00IN
WIND...60MPH
 
$$

Hodanish

382 
WWUS55 KPUB 202343
SVSPUB

Severe Weather Statement
National Weather Service Pueblo CO
543 PM MDT Sat Jul 20 2019

COC101-202352-
/O.EXP.KPUB.SV.W.0150.000000T0000Z-190720T2345Z/
Pueblo CO-
543 PM MDT Sat Jul 20 2019

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PUEBLO COUNTY WILL
EXPIRE AT 545 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, this 
storm will continue to produce gusty winds and very heavy rain 
capable of producing flash flooding.

A Severe Thunderstorm Watch remains in effect until 1100 PM MDT for
southeastern Colorado.

LAT...LON 3795 10410 3798 10465 3813 10493 3851 10493
      3851 10440
TIME...MOT...LOC 2342Z 133DEG 16KT 3836 10483 

$$

Hodanish

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 Pueblo, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 20, 3:14 PM MDT, 1 hour 54 minutes earlier.

Area forecast discussion, Jul 20, 3:14 PM MDT, 1 hour 54 minutes before

Area Forecast Discussion
National Weather Service Pueblo CO
314 PM MDT Sat Jul 20 2019

.SHORT TERM...(This evening through Sunday)
Issued at 314 PM MDT Sat Jul 20 2019

Currently...

A subtle shortwave trough is advancing northeast across central
Colorado while a surface low deepens over southeast Colorado.
Increased mid-upper level moisture accompanies the shortwave as TPW
values are on the rise, just increasing above normal along the
Continental Divide. At the same time, northerly surge on the
backside of the surface low is gradually increasing surface dew
points across the Southeast Colorado plains. Increasing moisture to
go along with strong heating and subtle upper forcing has led to the
development of scattered to widespread showers and weak
thunderstorms across the high terrain early this afternoon. Activity
is just starting to expand east to the I-25 corridor, including
strong to low-end severe storms. Temperatures are around 100 across
much of the plains, and 80s to 90s in the high valleys.

Tonight...

Dew points will continue to increase across the plains under
continued northerly/northeasterly flow. This increase in moisture
along with steep lapse rates will yield favorable CAPE (2000+ ML)
across all of the southeast plains by early evening. Deep layer
shear will be marginal, with around 30 knots north of HWY 50,
decreasing to 20 knots near the CO/NM border. Given upper forcing,
abundant deep moisture, and only marginal deep layer shear, expect
multicellular thunderstorms to be the dominant storm mode as
activity spreads east to the I-25 corridor and the rest of the
eastern plains. Hi-res guidance has been consistent in producing a
line of strong storms with UH tracks developing early this evening
and sweeping east across the plains.  Expect the primary storm
threat with storms to be damaging wind gusts, but hail to the size
of quarters or so will also be possible, especially early on.
Frequent cloud to ground lightning, and locally heavy rainfall, are
also expected hazards. Given these factors, have collaborated with
SPC to issue a Severe Thunderstorm Watch (533) for all of the
southeast plains until 11 PM. By then, storms will be weakening and
exiting the far eastern plains as the atmosphere stabilizes well
behind the front and after dark.  Storm activity over the mountains
will remain sub-severe given an overall lack of moisture and
instability, and mostly done after 9 PM.

Tomorrow...

The upper ridge will center itself over the central NM/AZ border and
build over the southwest US into the Great Basin. This will cause
flow over Colorado to become more northwesterly, and weaken.
Abundant moisture will continue to wrap around the high and over
Colorado, while at the same time easterly low level flow will
driving moisture across the plains and into the eastern mountains.
Given these factors, scattered thunderstorms are expected to develop
across most of the high terrain during the afternoon, including
widespread coverage over the eastern mountains by late afternoon.
With the ridge just starting to build, northwest flow will still be
enough to push storms east onto the eastern plains. Outflow boundary
development will also aid storm development further east. Well above
normal TPW means locally heavy rainfall will be possible with this
activity, with flash flood opportunities over recent burn scars and
urban areas. CAPE will be moderate, but weak shear should limit
storm strength to strong to low-end severe.

.LONG TERM...(Sunday night through Saturday)
Issued at 314 PM MDT Sat Jul 20 2019

.Sunday Night...Models continue to focus the best chances of
precipitation over the eastern mountains and along the
Colorado/New Mexico border, behind the secondary surge of lower
level moisture on the plains. Have some concerns with convective
parameterization overdoing the QPF, but 3km NAM models still focus
precipitation in these regions. There is also a threat for flash
flooding over the burn scars with higher precipitable waters and
lower level northeast flow tending to focus convection over the
mountains. Shear is light so not anticipating much of a severe
threat.

.Monday...Surface high pressure moves onto the high plains with
upper high over the Four Corners region.  Atmosphere looks capped
over much of the eastern plains with forecast highs around 80 while
dew points remain in the 50s.  Thunderstorms chances will be the
highest over the mountains with the elevated surface heating and
pooling of moisture from the east.  With weak northerly flow aloft,
storms will have difficulty moving off of the mountains. Will once
again have to watch for flash flooding on local burn scars.

.Tuesday through Saturday...Upper high over the Four Corners region
gradually shifts to the south.  Monsoon moisture continues to flow
into the region from the west.  Over the eastern plains, surface high
moves to the east and is replaced by weak surface flow.  Subtle
features will determine favored location and amount of convection
each day, and these are tough to predict this far out.  Anticipate
diurnal convection each day with the best chances for precipitation
over and near the mountains.  Temperatures will return to more
seasonal values.  A trough passing to the north at the end of the
week could bring an increase in low level moisture for the weekend,
with weak upslope flow developing. --PGW--

&&

.AVIATION...(For the 00Z TAFS through 00Z Sunday evening)
Issued at 314 PM MDT Sat Jul 20 2019

Showers and thunderstorms are expected over or near the TAF sites
this evening and again tomorrow afternoon. KCOS and KPUB will see
periodic showers and thunderstorms move over the sites between 22Z
and 03Z tonight, while activity should only move through the
vicinity of KALS. Winds will remain breezy to gusty out of the north
at KPUB and KCOS, and west at KALS, through the early evening,
becoming light later this evening. Showers and thunderstorms look
likely again tomorrow at KCOS and KPUB, mainly after 4 PM. VFR
conditions are expected most of the time at the TAF sites, though
brief periods of MVFR may occur under heavy rain.

&&

.PUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...LINE
LONG TERM...PGW
AVIATION...LINE

Hazardous weather outlook, Jul 20, 12:08 PM MDT, 5 hours before

Hazardous Weather Outlook
National Weather Service Pueblo CO
1208 PM MDT Sat Jul 20 2019

COZ058>089-093>099-211815-
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-
1208 PM MDT Sat Jul 20 2019

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

.DAY ONE...This Afternoon and Tonight

Showers and thunderstorms will develop over the higher terrain by
midday, then increase in coverage and intensity across the
Interstate 25 corridor and the eastern plains through the
afternoon and evening. Lightning, wind gusts up to 50 mph and
periods of locally heavy rain will be possible with these storms,
and area burn scars will need to be monitored for potential flash
flooding.

A few of the storms over the plains may become severe with wind
gusts in excess of 60 mph and hail to around the size of
quarters. The best chance for severe thunderstorm activity will be
generally along and north of Highway 50.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Cooler temperatures in combination with scattered to numerous
primarily afternoon and evening showers and thunderstorms, favoring
higher terrain locations will be possible each day from Sunday
into Friday.

The primary threats with thunderstorms will be locally heavy
rainfall, lightning, and wind gusts around 50 mph. The risk for
flash flooding on recent burn scars such as Spring, Junkins and
Hayden Pass will be elevated, initially from Sunday into Monday as
upslope flow brings increasing moisture to the region, which will
fuel thunderstorm development. In addition, any stronger storms
will be capable of generating hail to around the size of nickels
at times.

.SPOTTER INFORMATION STATEMENT...

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

12/12

In the hours before

Local storm report, Jul 20, 4:56 PM MDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
456 PM MDT SAT JUL 20 2019

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

0449 PM     HEAVY RAIN       2 N COLORADO SPRINGS    38.85N 104.82W
07/20/2019  M1.00 INCH       EL PASO            CO   COCORAHS

            1 INCH OF RAIN IN 30 MINUTES. STREET
            FLOODING.

&&

MW

Local storm report, Jul 20, 5:00 PM MDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
500 PM MDT SAT JUL 20 2019

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

0500 PM     HAIL             5 WSW BLENDE            38.22N 104.66W
07/20/2019  M1.00 INCH       PUEBLO             CO   TRAINED SPOTTER

&&

Local storm report, Jul 20, 5:01 PM MDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
501 PM MDT SAT JUL 20 2019

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

0458 PM     HAIL             2 N BLENDE              38.28N 104.57W
07/20/2019  M1.00 INCH       PUEBLO             CO   TRAINED SPOTTER

            HEAVY RAIN AND STRONG WINDS.

&&

MW

Local storm report, Jul 20, 5:03 PM MDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
503 PM MDT SAT JUL 20 2019

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

0457 PM     HAIL             2 WNW BLENDE            38.26N 104.61W
07/20/2019  M1.00 INCH       PUEBLO             CO   TRAINED SPOTTER

&&

MW

Local storm report, Jul 20, 5:04 PM MDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
504 PM MDT SAT JUL 20 2019

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

0503 PM     FLASH FLOOD      2 WNW BLENDE            38.25N 104.62W
07/20/2019                   PUEBLO             CO   TRAINED SPOTTER

            REPORTED SIGNIFICANT FLOODING IN THE AREA.

&&

Local storm report, Jul 20, 5:07 PM MDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
507 PM MDT SAT JUL 20 2019

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

0506 PM     TSTM WND DMG     4 SE PETERSON AFB       38.79N 104.65W
07/20/2019                   EL PASO            CO   NWS EMPLOYEE

            FEW TREES DOWN.

&&

The office that day

Everything else NWS Pueblo, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 20, 2:50 PM MDT	Special Weather Statement	PUB	Teller	25 min
Jul 20, 2:58 PM MDT	Special Weather Statement	PUB	El Paso	32 min
Jul 20, 3:05 PM MDT	Severe Thunderstorm Warning	PUB	El Paso, Teller	25 min
Jul 20, 3:25 PM MDT	Special Weather Statement	PUB	El Paso	35 min
Jul 20, 3:33 PM MDT	Special Weather Statement	PUB	El Paso	27 min
Jul 20, 3:36 PM MDT	Special Weather Statement	PUB	Pueblo	24 min
Jul 20, 3:49 PM MDT	Special Weather Statement	PUB	Douglas	26 min
Jul 20, 4:05 PM MDT	Special Weather Statement	PUB		25 min
Jul 20, 4:07 PM MDT	Special Weather Statement	PUB	El Paso	38 min
Jul 20, 4:15 PM MDT	Special Weather Statement	PUB	El Paso	30 min
Jul 20, 4:16 PM MDT	Special Weather Statement	PUB	Pueblo	44 min
Jul 20, 4:24 PM MDT	Flash Flood Warning	PUB	El Paso	3 hr
Jul 20, 4:24 PM MDT	Severe Thunderstorm Warning	PUB	El Paso	36 min
Jul 20, 4:37 PM MDT	Severe Thunderstorm Warning	PUB	El Paso, Pueblo, Teller	23 min
Jul 20, 4:39 PM MDT	Severe Thunderstorm Warning	PUB	Fremont, Pueblo	36 min
Jul 20, 4:56 PM MDT	Severe Thunderstorm Warning	PUB	El Paso	49 min
Jul 20, 5:07 PM MDT	Flash Flood Warning	PUB	Pueblo	3 hr
Jul 20, 5:14 PM MDT	Special Weather Statement	PUB	Las Animas	31 min
Jul 20, 5:17 PM MDT	Severe Thunderstorm Warning	PUB	Crowley, El Paso, Otero, Pueblo	43 min
Jul 20, 5:33 PM MDT	Areal Flood Advisory	PUB	Las Animas	117 min
Jul 20, 5:48 PM MDT	River Flood Warning	PUB	El Paso	84 min
Jul 20, 5:48 PM MDT	Tornado Warning	PUB	Crowley, El Paso, Pueblo	27 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2019 Every severe thunderstorm warning in 2019

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.