Alert archive / Colorado / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 339, NWS Pueblo, CO

September 13, 2026Las Animas County, Otero County, Colorado

NWS Pueblo, CO issued this severe thunderstorm warning at Sep 13, 2026, 3:55 PM MDT for Las Animas County, Otero County, Colorado. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 13, 2026, 3:55 PM MDT (21:55 UTC)
Expired
Sep 13, 2026, 4:30 PM MDT
In force
35 min
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Las Animas County, CO, Otero County, CO

The radar

The Pueblo radar (KPUX), 110 km from the middle of the area, began a volume at 21:56 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 text

As transmitted.

906 
WUUS55 KPUB 132155
SVRPUB
COC071-089-132230-
/O.NEW.KPUB.SV.W.0339.260913T2155Z-260913T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pueblo CO
355 PM MDT Sun Sep 13 2026

The National Weather Service in Pueblo has issued a

* Severe Thunderstorm Warning for...
  South central Otero County in southeastern Colorado...
  Northeastern Las Animas County in southeastern Colorado...

* Until 430 PM MDT.

* At 354 PM MDT, a severe thunderstorm was located 11 miles east of
  Thatcher, or 36 miles southwest of La Junta, moving northeast at 15
  mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will remain over mainly rural areas of
  south central Otero and northeastern Las Animas Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3740 10380 3751 10395 3772 10382 3756 10354
TIME...MOT...LOC 2154Z 221DEG 14KT 3751 10383 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Moore
3 follow-up statements
988 
WWUS55 KPUB 132205
SVSPUB

Severe Weather Statement
National Weather Service Pueblo CO
405 PM MDT Sun Sep 13 2026

COC071-089-132230-
/O.CON.KPUB.SV.W.0339.000000T0000Z-260913T2230Z/
Otero CO-Las Animas CO-
405 PM MDT Sun Sep 13 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM MDT
FOR SOUTH CENTRAL OTERO AND NORTHEASTERN LAS ANIMAS COUNTIES...

At 405 PM MDT, a severe thunderstorm was located 12 miles east of
Thatcher, or 34 miles southwest of La Junta, moving northeast at 15
mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

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

This severe thunderstorm will remain over mainly rural areas of south
central Otero and northeastern Las Animas Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3740 10380 3751 10395 3772 10382 3756 10354
TIME...MOT...LOC 2205Z 222DEG 13KT 3753 10380 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Moore
575 
WWUS55 KPUB 132217
SVSPUB

Severe Weather Statement
National Weather Service Pueblo CO
417 PM MDT Sun Sep 13 2026

COC071-089-132230-
/O.CON.KPUB.SV.W.0339.000000T0000Z-260913T2230Z/
Otero CO-Las Animas CO-
417 PM MDT Sun Sep 13 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM MDT
FOR SOUTH CENTRAL OTERO AND NORTH CENTRAL LAS ANIMAS COUNTIES...

At 417 PM MDT, a severe thunderstorm was located 14 miles east of
Delhi, or 29 miles southwest of La Junta, moving northeast at 15 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

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

This severe thunderstorm will remain over mainly rural areas of south
central Otero and north central Las Animas Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3744 10377 3756 10392 3772 10382 3758 10358
TIME...MOT...LOC 2217Z 216DEG 15KT 3759 10377 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Moore
593 
WWUS55 KPUB 132222
SVSPUB

Severe Weather Statement
National Weather Service Pueblo CO
422 PM MDT Sun Sep 13 2026

COC071-089-132231-
/O.EXP.KPUB.SV.W.0339.000000T0000Z-260913T2230Z/
Otero CO-Las Animas CO-
422 PM MDT Sun Sep 13 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL OTERO AND NORTH
CENTRAL LAS ANIMAS COUNTIES WILL EXPIRE AT 430 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, small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Pueblo.

&&

LAT...LON 3744 10377 3756 10392 3772 10382 3758 10358
TIME...MOT...LOC 2221Z 221DEG 14KT 3760 10376 

$$

Moore

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 Sep 13, 2:31 PM MDT, 1 hour 24 minutes earlier. Its key messages:

  • Hot again Monday, with a slight upturn in shower/thunderstorm coverage across the mountains.
  • Front arrives Monday night, bringing much cooler weather and greater coverage of showers and thunderstorms on Tuesday.
  • Seasonal temperatures with widespread showers and thunderstorms then expected each afternoon and evening from Wednesday into next weekend.
Area forecast discussion, Sep 13, 2:31 PM MDT, 1 hour 24 minutes before
Area Forecast Discussion
National Weather Service Pueblo CO
231 PM MDT Sun Sep 13 2026

.KEY MESSAGES...

- Hot again Monday, with a slight upturn in shower/thunderstorm
  coverage across the mountains.

- Front arrives Monday night, bringing much cooler weather and
  greater coverage of showers and thunderstorms on Tuesday.

- Seasonal temperatures with widespread showers and
  thunderstorms then expected each afternoon and evening from
  Wednesday into next weekend.

&&

.SHORT TERM /THROUGH MONDAY/...
Issued at 116 PM MDT Sun Sep 13 2026

Showers and thunderstorms already underway over the southern
Sangres and srn I-25 corridor early this afternoon, with more
isolated activity just beginning to develop over the remainder
of the higher terrain. For the rest of the afternoon into the
evening, expect isolated to scattered convection over the
mountains and interior valleys, while some isolated storms will
be possible over the sern plains, mainly in Baca/ern Las Animas
Counties. Lightning, gusty winds and brief heavy rainfall the
main storm threats, and will have to watch the Willow Burn Scar
for potential heavier rainfall, as several CAMs show rather
extensive t-storm coverage over the central mountains late this
afternoon into the evening. Suppose we could get a quick, windy
shower/t-storm along the I-25 corridor through Pueblo up into
Colorado Springs, though coverage looks isolated at best.
Overnight, initial wave of convection dies out toward sunset,
then many models show redevelopment over the mountains
(especially back toward the Continental Divide) after midnight,
so will maintain some relatively high pops here into Mon
morning.

On Monday, flow aloft increases as strong s/w trough moves
through the nrn Rockies. Not much increase in pwat across the
area through the day, as deeper moisture remains just south over
NM. Thus expect lingering morning convection to diminish by
midday as wave supporting it moves out the the region, before another
round of mainly scattered showers/storms develops over the
mountains in the afternoon, drifting into the I-25 corridor for
the evening. Lee surface trough on the plains may end up
forcing a few storms as well, especially along and east of a
Trinidad/Las Animas/Eads line. Downslope flow should boost max
temps a bit, and went with temps on the higher side of the
blended guidance envelope, especially on the plains.

&&

.LONG TERM /MONDAY NIGHT THROUGH SATURDAY/...
Issued at 116 PM MDT Sun Sep 13 2026

Nrn Rockies wave will push a strong cold front south through the
area Mon night, with boundary near the NM border by Tue morning.
Much cooler air mass will cover the plains during the day Tue,
with max temps 15-20 degf cooler than Mon at many locations.
Over the mountains, slightly more moisture rotates north out of
NM into the area, so expect an upturn in shower/thunderstorm
coverage over much of the high terrain and interior valleys by
afternoon. On the plains, air mass may be too cool/stable for
much convection during the day, then increasing chances for
showers/storms Tue evening as mountain convection moves e-ne,
and storms along the old cold frontal boundary just south of the
border potentially shift newd as well.

Nice monsoonal tap of moisture develops Wed-Sat, with strong
trough along the West Coast and upper high over the southeastern
U.S. Expect widespread showers/thunderstorms each day through
the period, with heavy rainfall threat increasing, especially
over area burn scars. May start to see some drying on Sun as
western trough moves east and deeper moisture is shunted
eastward, though refreshed post-frontal upslope behind potential
weekend cold front may keep storms going over at least the ern
mountains and plains. Temps will drift back back upward a few
degf Wed-Fri, before potential cold front drops readings back
below average for Sat/Sun.

&&

.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 1139 AM MDT Sun Sep 13 2026

VFR conditions are expected at KALS, KCOS, and KPUB the next 24
hrs.

Enough of a risk of a tsra at KALS to include a prob30 from mid
afternoon into the early evening, with gusty outflow winds over
30 kts and brief rain possible. Prevailing winds will remain
out of the s-sw into the evening.

At KCOS and KPUB, breezy se winds expected this afternoon, with
a few gusts 20-25 kts possible. Low chance (less than 20
percent) of a weak -tsra near both terminals this afternoon and
early evening, though confidence is too low to include in the
taf at this point. Winds will then weaken overnight and into
early Monday morning.

&&

.PUB WATCHES/WARNINGS/ADVISORIES...
None.

&&

SHORT TERM...PETERSEN
LONG TERM...PETERSEN
AVIATION...PETERSEN
Hazardous weather outlook, Sep 13, 11:37 AM MDT, 4 hours 18 minutes before
Hazardous Weather Outlook
National Weather Service Pueblo CO
1137 AM MDT Sun Sep 13 2026

COZ058>089-093>099-141745-
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-
1137 AM MDT Sun Sep 13 2026

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

.DAY ONE...This Afternoon and Tonight

Isolated to scattered showers and thunderstorms are expected this
afternoon and evening, with initial development across the higher
terrain by early afternoon. A few storms could spread northeast
off the Raton Mesa by this evening, impacting areas south of
Highway 50. Lightning, outflow wind gusts near 45 mph and brief
heavy rainfall will be possible. Small hail to half an inch may be
possible with stronger storms south of Highway 50 this evening.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Isolated to scattered showers and thunderstorms are forecast for
Monday. Thunderstorms will remain initially over higher terrain
during the afternoon, with a few moving east into the Plains by
the evening. A couple could become strong near the Kansas border
during the evening hours. Increasing shower and thunderstorm
activity is forecast for mid to late week with the increasing risk
of flash flooding on area burn scars.

.SPOTTER INFORMATION STATEMENT...

Weather conditions that meet reporting criteria for spotters will
be possible over portions of the region.

10/88

In the hours before

Special weather statement, Sep 13, 3:32 PM MDT, 23 minutes before
Special Weather Statement
National Weather Service Pueblo CO
332 PM MDT Sun Sep 13 2026

COZ093-094-132200-
Eastern Las Animas County CO-La Junta Vicinity/Otero County CO-
332 PM MDT Sun Sep 13 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHERN OTERO AND CENTRAL LAS
ANIMAS COUNTIES THROUGH 400 PM MDT...

At 332 PM MDT, Doppler radar was tracking a strong thunderstorm near
Thatcher, or 38 miles northeast of Trinidad, moving northeast at 20
mph.

HAZARD...Wind gusts up to 40 mph and penny size hail.

SOURCE...Radar indicated.

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

This storm will remain over mainly rural areas of southern Otero and
central Las Animas Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

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.

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

&&

LAT...LON 3735 10391 3752 10404 3770 10395 3751 10366
TIME...MOT...LOC 2132Z 219DEG 16KT 3750 10393

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

Moore

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 13, 3:32 PM MDTSpecial Weather StatementPUBLas Animas28 min
Sep 13, 4:23 PM MDTSpecial Weather StatementPUBLas Animas37 min
Sep 13, 4:34 PM MDTSevere Thunderstorm WarningPUBLas Animas26 min
Sep 13, 5:01 PM MDTSpecial Weather StatementPUB29 min
Sep 13, 5:11 PM MDTSevere Thunderstorm WarningPUBLas Animas34 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2026Every severe thunderstorm warning in 2026

Sources

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