Alert archive / Colorado / Winter Weather Advisories in 2021

Winter Weather Advisory 2, NWS Pueblo, CO

January 17, 202112 counties in Colorado

NWS Pueblo, CO issued this winter weather advisory at Jan 17, 2021, 8:54 PM MST for 12 counties in Colorado. It took effect at Jan 18, 2021, 5:00 PM MST. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued
Jan 17, 2021, 8:54 PM MST (03:54 UTC)
In effect from
Jan 18, 2021, 5:00 PM MST
Expired
Jan 19, 2021, 2:00 PM MST
In force
21 hr
Issued by
NWS Pueblo, CO

Counties Alamosa County, CO, Chaffee County, CO, Conejos County, CO, Costilla County, CO, Custer County, CO, Fremont County, CO, Huerfano County, CO, Las Animas County, CO, Mineral County, CO, Pueblo County, CO, Rio Grande County, CO, Saguache County, CO

The radar

The Pueblo radar (KPUX), 145 km from the middle of the area, began a volume at 03:55 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.

The nearest sounding before it

Grand Junction, CO (KGJT), launched 00:00Z, 3.9 hours before the alert went out and 289 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, Grand Junction, CO at 00:00Z on 2021-01-18Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Grand Junction, CO at 00:00Z on 2021-01-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.1939587897Sfc1 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
2056 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
183 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

608 
WWUS45 KPUB 180354
WSWPUB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pueblo CO
854 PM MST Sun Jan 17 2021

COZ068-181200-
/O.UPG.KPUB.WS.A.0001.210119T0000Z-210120T0000Z/
/O.NEW.KPUB.WW.Y.0002.210119T0000Z-210120T0000Z/
Eastern San Juan Mountains Above 10000 Feet-
854 PM MST Sun Jan 17 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM MONDAY TO 5 PM MST
TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 6 to 12 
  inches.

* WHERE...Eastern San Juan Mountains Above 10000 Feet County.

* WHEN...From 5 PM Monday to 5 PM MST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ074-075-181200-
/O.UPG.KPUB.WS.A.0001.210119T0000Z-210119T2100Z/
/O.NEW.KPUB.WW.Y.0002.210119T0000Z-210119T2100Z/
Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet-
Southern Sangre de Cristo Mountains Above 11000 Feet-
854 PM MST Sun Jan 17 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM MONDAY TO 2 PM MST
TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 6 to 12 
  inches.

* WHERE...Southern Sangre de Cristo Mountains.

* WHEN...From 5 PM Monday to 2 PM MST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
7 follow-up statements
566 
WWUS45 KPUB 181052
WSWPUB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pueblo CO
352 AM MST Mon Jan 18 2021

COZ072-073-079-080-087-088-181900-
/O.EXA.KPUB.WW.Y.0002.210119T0000Z-210119T2100Z/
Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-
Northern Sangre de Cristo Mountains Above 11000 Feet-
Wet Mountains between 6300 and 10000 Feet-
Wet Mountains Above 10000 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet-
Trinidad Vicinity/Western Las Animas County Below 7500 Feet-
352 AM MST Mon Jan 18 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO
2 PM MST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 9 
  inches. The heaviest amounts will be over the higher peaks of 
  the Sangre de Cristo Mountains. 

* WHERE...the northern Sangre de Cristo Mountains, the Wet 
  Mountains and the southern I-25 corridor. 

* WHEN...From 5 PM Monday to 2 PM MST Tuesday.

* IMPACTS...Travel could be very difficult, especially tonight
  over La Veta Pass and Raton Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ068-181900-
/O.CON.KPUB.WW.Y.0002.210119T0000Z-210120T0000Z/
Eastern San Juan Mountains Above 10000 Feet-
352 AM MST Mon Jan 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 6 to 12 
  inches.

* WHERE...Eastern San Juan Mountains Above 10000 Feet.

* WHEN...From 5 PM Monday to 5 PM MST Tuesday.

* IMPACTS...Travel could be very difficult, especially over Wolf
  Creek Pass and Cumbres Pass. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ074-075-181900-
/O.CON.KPUB.WW.Y.0002.210119T0000Z-210119T2100Z/
Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet-
Southern Sangre de Cristo Mountains Above 11000 Feet-
352 AM MST Mon Jan 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 2 PM MST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 6 to 12 
  inches.

* WHERE...Southern Sangre de Cristo Mountains.

* WHEN...From 5 PM Monday to 2 PM MST Tuesday.

* IMPACTS...Travel could be very difficult, especially tonight
  over La Veta Pass and Cucharas Pass. 

  PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
615 
WWUS45 KPUB 181700
WSWPUB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pueblo CO
1000 AM MST Mon Jan 18 2021

COZ067-190100-
/O.EXB.KPUB.WW.Y.0002.210119T0300Z-210119T2100Z/
Upper Rio Grande Valley/Eastern San Juan Mountains Below
10000 Feet-
1000 AM MST Mon Jan 18 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO
2 PM MST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 8 
  inches.

* WHERE...Upper Rio Grande Valley/Eastern San Juan Mountains 
  Below 10000 Feet County.

* WHEN...From 8 PM this evening to 2 PM MST Tuesday.

* IMPACTS...Travel could be very difficult, especially tonight
  over La Veta Pass and Raton Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ069>071-190100-
/O.EXB.KPUB.WW.Y.0002.210119T0300Z-210119T2100Z/
Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet-
Alamosa  Vicinity/Central San Luis Valley Below 8500 Feet-
Southern San Luis Valley-
1000 AM MST Mon Jan 18 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO
2 PM MST TUESDAY...

* WHAT...Snow expected. The heaviest snow in the San Luis Valley
  will fall over the southern and western ends of the valley.
  Snowfall amounts will range from 1 to 3 inches in the
  northeastern parts of the valley floor while the south and west
  sections of the valley floor may see 3 to 6 inches.

* WHERE...The San Luis Valley

* WHEN...From 8 PM this evening to 2 PM MST Tuesday.

* IMPACTS...Travel could be difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ068-190100-
/O.EXT.KPUB.WW.Y.0002.210119T0300Z-210120T0000Z/
Eastern San Juan Mountains Above 10000 Feet-
1000 AM MST Mon Jan 18 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 8 PM THIS EVENING
TO 5 PM MST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 6 to 12
  inches. The heaviest snow is expected to fall on the eastern
  side of the San Juan Mountains. 

* WHERE...Eastern San Juan Mountains Above 10000 Feet.

* WHEN...From 8 PM this evening to 5 PM MST Tuesday.

* IMPACTS...Travel could be very difficult, especially over Wolf 
  Creek Pass and Cumbres Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ072>075-079-080-087-088-190100-
/O.CON.KPUB.WW.Y.0002.210119T0000Z-210119T2100Z/
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-
Wet Mountains between 6300 and 10000 Feet-
Wet Mountains Above 10000 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet-
Trinidad Vicinity/Western Las Animas County Below 7500 Feet-
1000 AM MST Mon Jan 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 2 PM MST TUESDAY...

* WHAT...Snow expected. Total snow accumulations at lower
  elevations will be 2 to 6 inches. There will likely be a tight
  snow gradient the closer you get to the mountains. Along I-25, 
  snowfall accumulations will range between 3 and 5 inches. Over 
  the mountains 4 to 12 inches in expected, especially on the 
  eastern slopes. 

* WHERE...The northern Sangre de Cristo Mountains, the Wet 
  Mountains and the southern I-25 corridor.

* WHEN...From 5 PM Monday to 2 PM MST Tuesday.

* IMPACTS...Travel could be very difficult, especially tonight 
  over La Veta Pass and Raton Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
171 
WWUS45 KPUB 182148
WSWPUB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pueblo CO
248 PM MST Mon Jan 18 2021

COZ074-075-190600-
/O.UPG.KPUB.WW.Y.0002.210119T0000Z-210119T2100Z/
/O.NEW.KPUB.WS.W.0001.210119T0000Z-210119T2100Z/
Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet-
Southern Sangre de Cristo Mountains Above 11000 Feet-
248 PM MST Mon Jan 18 2021

...WINTER STORM WARNING IN EFFECT UNTIL 2 PM MST TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 8 to 16
  inches

* WHERE...Southern Sangre de Cristo Mountains.

* WHEN...Until 2 PM MST Tuesday.

* IMPACTS...Travel could be difficult, especially over La Veta
  Pass. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ068-190600-
/O.UPG.KPUB.WW.Y.0002.210119T0300Z-210120T0000Z/
/O.NEW.KPUB.WS.W.0001.210119T0300Z-210120T0000Z/
Eastern San Juan Mountains Above 10000 Feet-
248 PM MST Mon Jan 18 2021

...WINTER STORM WARNING IN EFFECT FROM 8 PM THIS EVENING TO 5 PM
MST TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 8 to 16
  inches.

* WHERE...Eastern San Juan Mountains Above 10000 Feet County.

* WHEN...From 8 PM this evening to 5 PM MST Tuesday.

* IMPACTS...Travel could be difficult over Cumbres and Wolf Creek
  Pass

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ072-073-079-080-087-088-190600-
/O.CON.KPUB.WW.Y.0002.210119T0000Z-210119T2100Z/
Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-
Northern Sangre de Cristo Mountains Above 11000 Feet-
Wet Mountains between 6300 and 10000 Feet-
Wet Mountains Above 10000 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet-
Trinidad Vicinity/Western Las Animas County Below 7500 Feet-
248 PM MST Mon Jan 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST
TUESDAY...

* WHAT...Snow expected. For the southern I-25 corridor region...3
  to 5 inches. For the Northern Sangre De Cristo and Wet 
  mountains, 6 to 12 inches.
 
* WHERE...Wet Mountains, Northern Sangre De Cristo Mountains and
  the southern I-25 corridor from south of Pueblo to the New
  Mexico border. 

* WHEN...Until 2 PM MST Tuesday.

* IMPACTS...Travel could be difficult along I-25 from south of
  Pueblo to the New Mexico border. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ067-190600-
/O.CON.KPUB.WW.Y.0002.210119T0300Z-210119T2100Z/
Upper Rio Grande Valley/Eastern San Juan Mountains Below
10000 Feet-
248 PM MST Mon Jan 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM THIS
EVENING TO 2 PM MST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 10 
  inches.

* WHERE...Upper Rio Grande Valley and the Eastern San Juan
  Mountains below 10000 Feet.

* WHEN...From 8 PM this evening to 2 PM MST Tuesday.

* IMPACTS...Travel could be difficult. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ069>071-190600-
/O.CON.KPUB.WW.Y.0002.210119T0300Z-210119T2100Z/
Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet-
Alamosa  Vicinity/Central San Luis Valley Below 8500 Feet-
Southern San Luis Valley-
248 PM MST Mon Jan 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM THIS
EVENING TO 2 PM MST TUESDAY...

* WHAT...Snow expected. Heaviest amounts over the San Luis Valley
  will be over the southern and western parts of the valley floor.
  Snow totals will be 1 to 3 inches over the northern and eastern
  sections and 3 to 7 inches over the southern and western
  sections. 

* WHERE...San Luis Valley.

* WHEN...From 8 PM this evening to 2 PM MST Tuesday.

* IMPACTS...Travel could be difficult. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

Hodanish
369 
WWUS45 KPUB 190537
WSWPUB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pueblo CO
1037 PM MST Mon Jan 18 2021

COZ068-191345-
/O.CON.KPUB.WS.W.0001.000000T0000Z-210120T0000Z/
Eastern San Juan Mountains Above 10000 Feet-
1037 PM MST Mon Jan 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
TUESDAY...

* WHAT...Heavy snow. Additional snow accumulations of 5 to 14 
  inches.

* WHERE...Eastern San Juan Mountains Above 10000 Feet County.

* WHEN...Until 5 PM MST Tuesday.

* IMPACTS...Travel could be very difficult, especially over
  Cumbres and Wolf Creek Passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ074-075-191345-
/O.CON.KPUB.WS.W.0001.000000T0000Z-210119T2100Z/
Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet-
Southern Sangre de Cristo Mountains Above 11000 Feet-
1037 PM MST Mon Jan 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST
TUESDAY...

* WHAT...Heavy snow. Additional snow accumulations of 4 to 10 
  inches.

* WHERE...Southern Sangre de Cristo Mountains.

* WHEN...Until 2 PM MST Tuesday.

* IMPACTS...Travel could be very difficult., especially over La
  Veta Pass. The hazardous conditions will impact the morning 
  commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ067-072-073-079-080-087-088-191345-
/O.CON.KPUB.WW.Y.0002.000000T0000Z-210119T2100Z/
Upper Rio Grande Valley/Eastern San Juan Mountains Below
10000 Feet-
Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-
Northern Sangre de Cristo Mountains Above 11000 Feet-
Wet Mountains between 6300 and 10000 Feet-
Wet Mountains Above 10000 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet-
Trinidad Vicinity/Western Las Animas County Below 7500 Feet-
1037 PM MST Mon Jan 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST
TUESDAY...

* WHAT...Snow. Additional snow accumulations of 3 to 9 inches.

* WHERE...Upper Rio Grande Valley, the Northern Sangre de Cristo
  mountains, Wet Mountains, and the southern I-25 including
  Huerfano and western Las Animas counties. 

* WHEN...Until 2 PM MST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions will impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ069>071-191345-
/O.CON.KPUB.WW.Y.0002.000000T0000Z-210119T2100Z/
Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet-
Alamosa  Vicinity/Central San Luis Valley Below 8500 Feet-
Southern San Luis Valley-
1037 PM MST Mon Jan 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST
TUESDAY...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches,
  except 3 to 8 inches for the southern and western side of the
  San Luis Valley. Winds gusting as high as 35 mph along the east
  side of the valley.

* WHERE...The San Luis Valley.

* WHEN...Until 2 PM MST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions will impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
061 
WWUS45 KPUB 191124
WSWPUB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pueblo CO
424 AM MST Tue Jan 19 2021

COZ068-191930-
/O.CON.KPUB.WS.W.0001.000000T0000Z-210120T0000Z/
Eastern San Juan Mountains Above 10000 Feet-
424 AM MST Tue Jan 19 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Heavy snow. Additional snow accumulations of 5 to 10 
  inches.

* WHERE...Eastern San Juan Mountains Above 10000 Feet County.

* WHEN...Until 5 PM MST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ074-075-191930-
/O.CON.KPUB.WS.W.0001.000000T0000Z-210119T2100Z/
Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet-
Southern Sangre de Cristo Mountains Above 11000 Feet-
424 AM MST Tue Jan 19 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* WHAT...Heavy snow. Additional snow accumulations of 2 to 6 
  inches.

* WHERE...Southern Sangre de Cristo Mountains.

* WHEN...Until 2 PM MST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ067-072-073-079-080-087-088-191930-
/O.CON.KPUB.WW.Y.0002.000000T0000Z-210119T2100Z/
Upper Rio Grande Valley/Eastern San Juan Mountains Below
10000 Feet-
Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-
Northern Sangre de Cristo Mountains Above 11000 Feet-
Wet Mountains between 6300 and 10000 Feet-
Wet Mountains Above 10000 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet-
Trinidad Vicinity/Western Las Animas County Below 7500 Feet-
424 AM MST Tue Jan 19 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of 2 to 4 inches.

* WHERE...Upper Rio Grande Valley, the Northern Sangre de Cristo 
  mountains, Wet Mountains, and the southern I-25 including 
  Huerfano and western Las Animas counties.

* WHEN...Until 2 PM MST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ069>071-191930-
/O.CON.KPUB.WW.Y.0002.000000T0000Z-210119T2100Z/
Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet-
Alamosa  Vicinity/Central San Luis Valley Below 8500 Feet-
Southern San Luis Valley-
424 AM MST Tue Jan 19 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches,
  except 2 to 5 inches for the southern and western side of the 
  San Luis Valley. Winds gusting as high as 35 mph along the east 
  side of the valley.

* WHERE...The San Luis Valley.

* WHEN...Until 2 PM MST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
628 
WWUS45 KPUB 191802
WSWPUB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pueblo CO
1102 AM MST Tue Jan 19 2021

COZ068-200000-
/O.CON.KPUB.WS.W.0001.000000T0000Z-210120T0000Z/
Eastern San Juan Mountains Above 10000 Feet-
1102 AM MST Tue Jan 19 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Heavy snow. Additional snow accumulations of up to 3 
  inches.

* WHERE...Eastern San Juan Mountains Above 10000 Feet County.

* WHEN...Until 5 PM MST Today.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ074-075-192100-
/O.CON.KPUB.WS.W.0001.000000T0000Z-210119T2100Z/
Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet-
Southern Sangre de Cristo Mountains Above 11000 Feet-
1102 AM MST Tue Jan 19 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* WHAT...Heavy snow. Additional snow accumulations of up to one 
  inch.

* WHERE...Southern Sangre de Cristo Mountains.

* WHEN...Until 2 PM MST Today.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ067-072-073-079-080-087-088-192100-
/O.CON.KPUB.WW.Y.0002.000000T0000Z-210119T2100Z/
Upper Rio Grande Valley/Eastern San Juan Mountains Below
10000 Feet-
Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-
Northern Sangre de Cristo Mountains Above 11000 Feet-
Wet Mountains between 6300 and 10000 Feet-
Wet Mountains Above 10000 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet-
Trinidad Vicinity/Western Las Animas County Below 7500 Feet-
1102 AM MST Tue Jan 19 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of up to one inch.

* WHERE...Upper Rio Grande Valley, the Northern Sangre de Cristo 
  mountains, Wet Mountains, and the southern I-25 including 
  Huerfano and western Las Animas counties.

* WHEN...Until 2 PM MST Today.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ069>071-192100-
/O.CON.KPUB.WW.Y.0002.000000T0000Z-210119T2100Z/
Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet-
Alamosa  Vicinity/Central San Luis Valley Below 8500 Feet-
Southern San Luis Valley-
1102 AM MST Tue Jan 19 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of up to one inch.

* WHERE...The San Luis Valley.

* WHEN...Until 2 PM MST Today.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
633 
WWUS45 KPUB 192109
WSWPUB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pueblo CO
209 PM MST Tue Jan 19 2021

COZ068-192215-
/O.CAN.KPUB.WS.W.0001.000000T0000Z-210120T0000Z/
Eastern San Juan Mountains Above 10000 Feet-
209 PM MST Tue Jan 19 2021

...WINTER STORM WARNING IS CANCELLED...

Any remaining light snow will continue to diminish late this
afternoon, with little to no additional snowfall expected.

$$

COZ074-075-192215-
/O.EXP.KPUB.WS.W.0001.000000T0000Z-210119T2100Z/
Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet-
Southern Sangre de Cristo Mountains Above 11000 Feet-
209 PM MST Tue Jan 19 2021

...WINTER STORM WARNING HAS EXPIRED...

Any remaining light snow will continue to diminish late this
afternoon, with little to no additional snowfall expected.

$$

COZ067-069>073-079-080-087-088-192215-
/O.EXP.KPUB.WW.Y.0002.000000T0000Z-210119T2100Z/
Upper Rio Grande Valley/Eastern San Juan Mountains Below
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-
Wet Mountains between 6300 and 10000 Feet-
Wet Mountains Above 10000 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet-
Trinidad Vicinity/Western Las Animas County Below 7500 Feet-
209 PM MST Tue Jan 19 2021

...WINTER WEATHER ADVISORY HAS EXPIRED...

Any remaining light snow will continue to diminish late this
afternoon, with little to no additional snowfall expected.

$$

What forecasters said that day

The local office's own words before this winter weather advisory 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 winter weather advisory went out at Jan 17, 3:14 PM MST, 5 hours 40 minutes earlier.

Area forecast discussion, Jan 17, 3:14 PM MST, 5 hours 40 minutes before
Area Forecast Discussion
National Weather Service Pueblo CO
314 PM MST Sun Jan 17 2021

.SHORT TERM...(This evening through Monday)
Issued at 314 PM MST Sun Jan 17 2021

Currently...

Thin cirrus with some mid lvl clouds were occurring at 2 pm over
parts of the region while just to the north of the fcst area
considerably more clouds were noted. Temps over the plains were
generally in the U30s over the divides and 40s along the Ark rvr.
Interestingly, warmest temps were in the mid Ark Rvr valley where
temps were noted around 50F. The San Luis Valley was in the 40s
while the mtns were in the 10s and 20s.

Skies were dry over the region except over the mainly the higher
elevations of Lake County were snow showers were noted per Colorado
Mtn College webcam in Leadville. Winds were generally light and
diurnally drive, except across the central mtns were breezy winds
from the NW were noted per surface obs.

Tonight...

A weak disturbance will move across the region tonight. This system
will be mainly dry for the area, but it will bring some light snow
to the central mtns, especially in Lake County. An inches or two of
snow is not out of the question. Most of the snow will fall around
the midnight hour. Mins tonight will fall into the 20s across the
plains with a few low 30s in the normally warmer areas just
immediately east of the mtns. San Luis valley will once again fall
into the single digits along the river with tens across the rest of
the valley floor. Mtns will be in the single digits and 10s.

Tomorrow...

A stronger weather system will begin to impact the region later in
the day on Monday. Snow will once again develop over the central
mtns during the morning nd cover most of the contdvd by later in
day. the day. By mid afternoon snow showers will become possible
along the  mtns/plains interface, with some light accumulations
possible by rush hour. Nearly all of the remainder of the plains
east of the interstate will remain dry. Temperatures tomorrow will
be cooler than today with only 30s across the lower Pikes Peak
region and U30s and 40s across the remainder of the plains. Upslope
winds will develop by mid afternoon but should remain light. With
snow developing a bit later than earlier expected, the winter
weather highlights were pushed out to 00 UTC (see below) \/Hodanish

.LONG TERM...(Monday night through Sunday)
Issued at 314 PM MST Sun Jan 17 2021

...Snow Over and Near the Higher Terrain Monday night and Tuesday...

Monday night-Tuesday night...Latest models remain in good agreement
with upper level energy digging across the Great Basin through the
day Monday, continuing to dig south and west into the Desert
Southwest through the day Tuesday. Movement of the this system
deepens low to mid level easterly, albeit weak, flow across the
region Monday night and Tuesday. This, combined with increasing
moisture and generally weak implied lift associated with the passing
Great Basin system, will allow for light to moderate snow to develop
and persist for areas over and near the higher terrain Monday night
into early Tuesday morning, before snow diminishes from northeast to
southwest through the day Tuesday.

With the expected movement of this system, the best precipitation
and snowfall accumulations remain expected across southern and
western portions of the area, especially the southern mountains,
where NAM and GFS solutions indicate advisory amounts of 5 to 10
inches across the southern Sangre de Cristo and eastern San Juan
Ranges through Tuesday afternoon. However, the EC and Canadian
solutions continue to indicate the potential higher amounts,
especially across the Sangre de Cristo Range. With that said, and
the fact latest models have slowed the development of snowfall into
late Monday afternoon, have decided to hold on to winter storm
watches for the Sangres and San Juans starting at 00Z Tue and
continuing to 00Z Wed. As for the rest of the area, may need to add
advisories for the Northern Sangre de Cristo and Wet Mountains, as
well as the Wet Mountain Valley, the southern I-25 Corridor and the
San Luis Valley with 4 to 8 inches possible across the higher
terrain and 2 to 4 inches for the valley locales and southern I-25
Corridor through this period. Snowfall of 1 to 3 inches looks
possible over and near the Central Mountains, as well as for the
northern I-25 Corridor into the Pikes Peak region, with a very tight
gradient of snow from west to east, as little or no precipitation is
expected east of I-25 into the southeast plains. Below seasonal
temperatures are expected on Tuesday, with highs generally in the
30s across the lower elevations, and mainly in the 20s across the
higher terrain.

Wednesday-Thursday...Latest models continue to indicate differences
in model handling of the Desert Southwest system's ejection across
the Rockies through the day Thursday, though continue to trend
towards a weak upper disturbance moving through the westerly flow
across the region bringing a few possible mountain showers,
especially along and west of the ContDvd, to the area on Thursday.
Otherwise, a dry forecast remains in place, with temperatures
warming back to above seasonal levels into the 50s across the
plains, and mainly 30s and 40s across the higher terran for both
Wednesday and Thursday.

Friday-Sunday...Model differences continue into the upcoming
weekend, though they do agree on moderate to strong west to
southwest flow developing aloft, as more eastern Pacific energy digs
into the Great Basin on Friday. The latest GFS continues to slowly
translate this system across the Rockies through the day Sunday,
where as the EC splits the system with the main piece digging south
and west into the Desert Southwest once again. Either way, pattern
supports good chances of snow across the ContDvd Saturday and
Sunday, with breezy to windy conditions expected across the area,
leading to possible critical fire weather conditions across the
plains on Saturday. NBM spreads slight pops across the plains late
Saturday and Sunday, and have followed suite for now, with cooler
temperatures for Sunday.

&&

.AVIATION...(For the 00Z TAFS through 00Z Monday evening)
Issued at 314 PM MST Sun Jan 17 2021

VFR conditions are near certain tonight through mid afternoon
tomorrow. Some snow showers could occur at KCOS reducing vis and
lowering cigs by very late in the afternoon. Over KPUB and KALS VFR
is expected through all of tomorrow afternoon. Winds will be light
through the period.

&&

.PUB WATCHES/WARNINGS/ADVISORIES...
Winter Storm Watch from Monday afternoon through Tuesday
afternoon for COZ068.

Winter Storm Watch from Monday afternoon through Tuesday
afternoon for COZ074-075.

&&

SHORT TERM...HODANISH
LONG TERM...MW
AVIATION...HODANISH
Hazardous weather outlook, Jan 17, 7:11 PM MST, 1 hour 43 minutes before
Hazardous Weather Outlook
National Weather Service Pueblo CO
711 PM MST Sun Jan 17 2021

COZ058>089-093>099-190215-
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-
711 PM MST Sun Jan 17 2021

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

.DAY ONE...Tonight

Snow will continue to spread into the central mountains overnight
with 1 to 2 inches of accumulation possible across the higher
terrain, mainly north of Cottonwood Pass.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

An upper level storm will bring snow to the region from midday
Monday through Tuesday, before snowfall ends by Tuesday evening.
The heaviest snow will likely occur over the east slopes of the
southern Sangre de Cristo Range and Wet Mountains Monday night,
before shifting into the San Juan Mountains early Tuesday morning.
Lower elevations along and west of I-25 will see mainly light
snow, and the far eastern plains may only see some spotty snow
showers and flurries Monday night and early Tuesday morning.
Although snowfall amounts are still subject to change, snowfall
amounts of 6 to 12 inches will be possible across the southern
Sangre De Cristo and eastern San Juan mountains, with 3 to 8
inches possible across the remainder of the southern mountains
south of highway 50. One to 4 inches will be possible across the
remainder of the mountains to the north of highway 50, with up to
2 inches possible across the valleys and adjacent lower
elevations of the southern I-25 corridor. Roads could become slick
and hazardous, especially Monday night through Tuesday.

Another storm system will begin to impact the region on Friday,
bringing snow to the mountains from Friday afternoon into the
weekend, while lower elevations see a chance for rain or snow
beginning on Saturday.

.SPOTTER INFORMATION STATEMENT...

Weather conditions that meet reporting criteria for spotters will be
possible tonight in portions of Lake County.

31/31

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 18, 2:48 PM MSTWinter Storm WarningPUBConejos, Costilla, Huerfano, Las Animas, Mineral, Rio Grande23 hr

Nearby

Winter Weather Advisories in Colorado, 2021Every winter weather advisory in 2021

Sources

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