Alert archive / Colorado / Winter Storm Watches in 2018

Winter Storm Watch 3, NWS Pueblo, CO

January 19, 20186 counties in Colorado

NWS Pueblo, CO issued this winter storm watch at Jan 19, 2018, 3:16 PM MST for 6 counties in Colorado. It took effect at Jan 20, 2018, 6:00 PM MST. It was in force for .

The area

The counties it named.

The facts

Issued
Jan 19, 2018, 3:16 PM MST (22:16 UTC)
In effect from
Jan 20, 2018, 6:00 PM MST
Expired
Jan 20, 2018, 4:22 AM MST
In force
Issued by
NWS Pueblo, CO

Counties Chaffee County, CO, El Paso County, CO, Fremont County, CO, Lake County, CO, Saguache County, CO, Teller County, CO

The radar

The Pueblo radar (KPUX), 131 km from the middle of the area, began a volume at 22:20 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

Denver, CO (KDEN), launched 12:00Z, 10.3 hours before the alert went out and 246 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, Denver, CO at 12:00Z on 2018-01-19Temperature 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, Denver, CO at 12:00Z on 2018-01-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.193958Sfc1 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
3898 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

408 
WWUS45 KPUB 192216
WSWPUB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pueblo CO
316 PM MST Fri Jan 19 2018

COZ066-068-200630-
/O.UPG.KPUB.WS.A.0002.180120T2100Z-180121T2100Z/
/O.NEW.KPUB.WW.Y.0005.180120T2100Z-180121T2100Z/
La Garita Mountains Above 10000 Feet-
Eastern San Juan Mountains Above 10000 Feet-
316 PM MST Fri Jan 19 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM SATURDAY TO 2 PM
MST SUNDAY...

* WHAT...Snow and blowing snow expected. Plan on difficult 
  travel conditions. Total snow accumulations of 7 to 10 inches, 
  with localized amounts up to 20 inches, are expected.

* WHERE...La Garita Mountains Above 10000 Feet and Eastern San 
  Juan Mountains Above 10000 Feet.

* WHEN...From 2 PM Saturday to 2 PM MST Sunday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will cause
  areas of blowing and drifting snow causing hazardous travel
  conditions over area passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing snow will cause primarily travel
difficulties. Be prepared for snow covered roads and limited
visibilities, and use caution while driving. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

$$

COZ058>061-200630-
/O.NEW.KPUB.WS.A.0003.180121T0100Z-180122T0000Z/
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-
316 PM MST Fri Jan 19 2018

...WINTER STORM WATCH IN EFFECT FROM SATURDAY EVENING THROUGH
SUNDAY AFTERNOON...

* WHAT...Heavy snow possible. Plan on difficult travel 
  conditions. Total snow accumulations of 6 to 9 inches, with 
  localized amounts up to 15 inches, are possible.

* WHERE...Western Mosquito Range/East Lake County Above 11000 
  Feet, Leadville Vicinity/Lake County Below 11000 Feet, Eastern 
  Sawatch Mountains Above 11000 Feet and Western Chaffee County 
  Between 9000 and 11000 Feet.

* WHEN...From Saturday evening through Sunday afternoon.

* ADDITIONAL DETAILS...Significant reductions in visibility and
  hazardous travel conditions over mountain passes are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

COZ081-082-200630-
/O.NEW.KPUB.WS.A.0003.180121T0600Z-180122T0000Z/
Teller County/Rampart Range Above 7500 Feet/Pikes Peak Between
7500 And 11000 Feet-Pikes Peak Above 11000 Feet-
316 PM MST Fri Jan 19 2018

...WINTER STORM WATCH IN EFFECT FROM SATURDAY EVENING THROUGH
SUNDAY AFTERNOON...

* WHAT...Heavy snow and blowing snow possible. Plan on difficult 
  travel conditions. Total snow accumulations of 3 to 5 inches, 
  with localized amounts up to 12 inches, are possible.

* WHERE...Teller County/Rampart Range Above 7500 Feet/Pikes Peak 
  Between 7500 and 11000 Feet and Pikes Peak Above 11000 Feet.

* WHEN...From Saturday evening through Sunday afternoon.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will 
  cause areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

COZ084-200630-
/O.NEW.KPUB.WS.A.0003.180121T0900Z-180122T0000Z/
Northern El Paso County/Monument Ridge/Rampart Range Below
7500 Feet-
316 PM MST Fri Jan 19 2018

...WINTER STORM WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH
SUNDAY AFTERNOON...

* WHAT...Heavy snow and blowing snow possible. Plan on difficult
  travel conditions. Total snow accumulations of 2 to 4 inches
  with locally higher amounts are possible.

* WHERE...Northern El Paso County/Monument Ridge/Rampart Range 
  Below 7500 Feet.

* WHEN...From late Saturday night through Sunday afternoon.

* ADDITIONAL DETAILS...Winds gusting as high as 55 mph will cause
  areas of blowing and drifting snow along with hazardous travel
  conditions on Interstate 25 over the Palmer Divide.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$
3 follow-up statements
674 
WWUS45 KPUB 200103
WSWPUB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pueblo CO
603 PM MST Fri Jan 19 2018

COZ066-068-200915-
/O.CON.KPUB.WW.Y.0005.180120T2100Z-180121T2100Z/
La Garita Mountains Above 10000 Feet-
Eastern San Juan Mountains Above 10000 Feet-
603 PM MST Fri Jan 19 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM SATURDAY
TO 2 PM MST SUNDAY...

* WHAT...Snow and blowing snow expected. Plan on difficult 
  travel conditions. Total snow accumulations of 7 to 10 inches, 
  with localized amounts up to 20 inches, are expected.

* WHERE...La Garita Mountains Above 10000 Feet and Eastern San 
  Juan Mountains Above 10000 Feet.

* WHEN...From 2 PM Saturday to 2 PM MST Sunday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will 
  cause areas of blowing and drifting snow causing hazardous 
  travel conditions over area passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing snow will cause primarily travel
difficulties. Be prepared for snow covered roads and limited
visibilities, and use caution while driving. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

$$

COZ058>061-200915-
/O.CON.KPUB.WS.A.0003.180121T0100Z-180122T0000Z/
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-
603 PM MST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY AFTERNOON...

* WHAT...Heavy snow possible. Plan on difficult travel 
  conditions. Total snow accumulations of 6 to 9 inches, with 
  localized amounts up to 15 inches, are possible.

* WHERE...Western Mosquito Range/East Lake County Above 11000 
  Feet, Leadville Vicinity/Lake County Below 11000 Feet, Eastern 
  Sawatch Mountains Above 11000 Feet and Western Chaffee County 
  Between 9000 and 11000 Feet.

* WHEN...From Saturday evening through Sunday afternoon.

* ADDITIONAL DETAILS...Significant reductions in visibility and 
  hazardous travel conditions over mountain passes are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

COZ081-082-200915-
/O.CON.KPUB.WS.A.0003.180121T0600Z-180122T0000Z/
Teller County/Rampart Range Above 7500 Feet/Pikes Peak Between
7500 And 11000 Feet-Pikes Peak Above 11000 Feet-
603 PM MST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY AFTERNOON...

* WHAT...Heavy snow and blowing snow possible. Plan on difficult 
  travel conditions. Total snow accumulations of 3 to 5 inches, 
  with localized amounts up to 12 inches, are possible.

* WHERE...Teller County/Rampart Range Above 7500 Feet/Pikes Peak 
  Between 7500 and 11000 Feet and Pikes Peak Above 11000 Feet.

* WHEN...From Saturday evening through Sunday afternoon.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will 
  cause areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

COZ084-200915-
/O.CON.KPUB.WS.A.0003.180121T0900Z-180122T0000Z/
Northern El Paso County/Monument Ridge/Rampart Range Below
7500 Feet-
603 PM MST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE SATURDAY NIGHT
THROUGH SUNDAY AFTERNOON...

* WHAT...Heavy snow and blowing snow possible. Plan on difficult
  travel conditions. Total snow accumulations of 2 to 4 inches  
  locally higher amounts are possible.

* WHERE...Northern El Paso County/Monument Ridge/Rampart Range 
  Below 7500 Feet.

* WHEN...From late Saturday night through Sunday afternoon.

* ADDITIONAL DETAILS...Winds gusting as high as 55 mph will 
  cause areas of blowing and drifting snow along with hazardous 
  travel conditions on Interstate 25 over the Palmer Divide.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$
663 
WWUS45 KPUB 200355
WSWPUB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pueblo CO
855 PM MST Fri Jan 19 2018

COZ066-068-201130-
/O.CON.KPUB.WW.Y.0005.180120T2100Z-180121T2100Z/
La Garita Mountains Above 10000 Feet-
Eastern San Juan Mountains Above 10000 Feet-
855 PM MST Fri Jan 19 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM SATURDAY
TO 2 PM MST SUNDAY...

* WHAT...Snow and blowing snow expected. Plan on difficult 
  travel conditions. Total snow accumulations of 7 to 10 inches, 
  with localized amounts up to 20 inches, are expected.

* WHERE...La Garita Mountains Above 10000 Feet and Eastern San 
  Juan Mountains Above 10000 Feet.

* WHEN...From 2 PM Saturday to 2 PM MST Sunday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will 
  cause areas of blowing and drifting snow causing hazardous 
  travel conditions over area passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing snow will cause primarily travel
difficulties. Be prepared for snow covered roads and limited
visibilities, and use caution while driving. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

$$

COZ058>061-201130-
/O.CON.KPUB.WS.A.0003.180121T0100Z-180122T0000Z/
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-
855 PM MST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY AFTERNOON...

* WHAT...Heavy snow possible. Plan on difficult travel 
  conditions. Total snow accumulations of 6 to 9 inches, with 
  localized amounts up to 15 inches, are possible.

* WHERE...Western Mosquito Range/East Lake County Above 11000 
  Feet, Leadville Vicinity/Lake County Below 11000 Feet, Eastern 
  Sawatch Mountains Above 11000 Feet and Western Chaffee County 
  Between 9000 and 11000 Feet.

* WHEN...From Saturday evening through Sunday afternoon.

* ADDITIONAL DETAILS...Significant reductions in visibility and 
  hazardous travel conditions over mountain passes are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

COZ081-082-201130-
/O.CON.KPUB.WS.A.0003.180121T0600Z-180122T0000Z/
Teller County/Rampart Range Above 7500 Feet/Pikes Peak Between
7500 And 11000 Feet-Pikes Peak Above 11000 Feet-
855 PM MST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY AFTERNOON...

* WHAT...Heavy snow and blowing snow possible. Plan on difficult 
  travel conditions. Total snow accumulations of 3 to 5 inches, 
  with localized amounts up to 12 inches, are possible.

* WHERE...Teller County/Rampart Range Above 7500 Feet/Pikes Peak 
  Between 7500 and 11000 Feet and Pikes Peak Above 11000 Feet.

* WHEN...From Saturday evening through Sunday afternoon.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will 
  cause areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

COZ084-201130-
/O.CON.KPUB.WS.A.0003.180121T0900Z-180122T0000Z/
Northern El Paso County/Monument Ridge/Rampart Range Below
7500 Feet-
855 PM MST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE SATURDAY NIGHT
THROUGH SUNDAY AFTERNOON...

* WHAT...Heavy snow and blowing snow possible. Plan on difficult 
  travel conditions. Total snow accumulations of 2 to 4 inches 
  locally higher amounts are possible.

* WHERE...Northern El Paso County/Monument Ridge/Rampart Range 
  Below 7500 Feet.

* WHEN...From late Saturday night through Sunday afternoon.

* ADDITIONAL DETAILS...Winds gusting as high as 55 mph will 
  cause areas of blowing and drifting snow along with hazardous 
  travel conditions on Interstate 25 over the Palmer Divide.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$
320 
WWUS45 KPUB 201122
WSWPUB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pueblo CO
422 AM MST Sat Jan 20 2018

COZ084-201930-
/O.UPG.KPUB.WS.A.0003.180121T0900Z-180122T0000Z/
/O.NEW.KPUB.WS.W.0002.180121T0900Z-180122T0000Z/
Northern El Paso County/Monument Ridge/Rampart Range Below
7500 Feet-
422 AM MST Sat Jan 20 2018

...WINTER STORM WARNING IN EFFECT FROM 2 AM TO 5 PM MST SUNDAY...

* WHAT...Heavy snow and blowing snow expected. Plan on difficult
  travel conditions. Total snow accumulations of 4 to 9 inches,
  with highest amounts along and just south of the Palmer Divide. 

* WHERE...Northern El Paso County/Monument Ridge/Rampart Range 
  Below 7500 Feet.

* WHEN...From 2 AM to 5 PM MST Sunday.

* ADDITIONAL DETAILS...Northerly winds of 20 to 30 mph with gusts
  up to 50 mph late Sunday morning and afternoon, will cause areas
  of blowing and drifting snow. Hazardous travel conditions can be
  expected, especially on west to east oriented roadways west of
  the I-25 Corridor. 
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions are expected. 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.

$$

COZ058>061-201930-
/O.UPG.KPUB.WS.A.0003.180121T0100Z-180122T0000Z/
/O.EXB.KPUB.WW.Y.0005.180121T0100Z-180122T0000Z/
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-
422 AM MST Sat Jan 20 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
5 PM MST SUNDAY...

* WHAT...Snow and blowing snow expected. Plan on difficult travel
  conditions. Total snow accumulations of 6 to 12 inches can be
  expected, with localized higher amounts on favored west facing
  slopes. 

* WHERE...Western Mosquito Range/East Lake County Above 11000 
  Feet, Leadville Vicinity/Lake County Below 11000 Feet, Eastern 
  Sawatch Mountains Above 11000 Feet and Western Chaffee County 
  Between 9000 and 11000 Feet.

* WHEN...From 6 PM this evening to 5 PM MST Sunday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will cause
  areas of blowing and drifting snow and hazardous travel  
  conditions over area passes. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing snow will cause primarily travel difficulties.
Be prepared for snow covered roads and limited visibilities, and 
use caution while driving. The latest road conditions for the 
state you are calling from can be obtained by calling 5 1 1.

$$

COZ081-082-201930-
/O.UPG.KPUB.WS.A.0003.180121T0600Z-180122T0000Z/
/O.EXB.KPUB.WW.Y.0005.180121T0600Z-180122T0000Z/
Teller County/Rampart Range Above 7500 Feet/Pikes Peak Between
7500 And 11000 Feet-Pikes Peak Above 11000 Feet-
422 AM MST Sat Jan 20 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
5 PM MST SUNDAY...

* WHAT...Snow and blowing snow expected. Plan on slippery road
  conditions. In addition, areas of poor visibility are expected.
  Total snow accumulations of 4 to 9 inches can be expected, with
  localized amounts up to 13 inches on favored higher north facing
  slopes.

* WHERE...Teller County/Rampart Range Above 7500 Feet/Pikes Peak 
  Between 7500 and 11000 Feet and Pikes Peak Above 11000 Feet.

* WHEN...From 11 PM this evening to 5 PM MST Sunday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will 
  cause areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing snow will cause primarily travel difficulties.
Be prepared for snow covered roads and limited visibilities, and 
use caution while driving. The latest road conditions for the 
state you are calling from can be obtained by calling 5 1 1.

$$

COZ072>075-079-080-201930-
/O.EXB.KPUB.WW.Y.0005.180121T0600Z-180122T0000Z/
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-
422 AM MST Sat Jan 20 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
5 PM MST SUNDAY...

* WHAT...Snow expected. Plan on slippery road conditions. In
  addition, some reductions to visibility are expected. Total snow
  accumulations of 4 to 9 inches can be expected, with localized
  amounts up to 14 inches on favored higher north facing slopes. 

* WHERE...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 and Wet 
  Mountains Above 10000 Feet.

* WHEN...From 11 PM this evening to 5 PM MST Sunday.

* ADDITIONAL DETAILS...Winds gusting as high as 30 mph will 
  cause patchy blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

COZ066-068-201930-
/O.CON.KPUB.WW.Y.0005.180120T2100Z-180121T2100Z/
La Garita Mountains Above 10000 Feet-
Eastern San Juan Mountains Above 10000 Feet-
422 AM MST Sat Jan 20 2018

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

* WHAT...Snow and blowing snow expected. Plan on difficult travel
  conditions. Total snow accumulations of 6 to 12 inches can be
  expected, with localized amounts up to 18 inches on favored
  southwest facing slopes. 

* WHERE...La Garita Mountains Above 10000 Feet and Eastern San 
  Juan Mountains Above 10000 Feet.

* WHEN...From 2 PM this afternoon to 2 PM MST Sunday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will cause
  areas of blowing and drifting snow and hazardous travel
  conditions over area passes. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing snow will cause primarily travel difficulties.
Be prepared for snow covered roads and limited visibilities, and 
use caution while driving. The latest road conditions for the 
state you are calling from can be obtained by calling 5 1 1.

$$

What forecasters said that day

The local office's own words before this winter storm watch 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 storm watch went out at Jan 19, 10:39 AM MST, 4 hours 37 minutes earlier.

Area forecast discussion, Jan 19, 10:39 AM MST, 4 hours 37 minutes before
Area Forecast Discussion
National Weather Service Pueblo CO
1039 AM MST Fri Jan 19 2018

.SHORT TERM...(Today and tonight)
Issued at 420 AM MST Fri Jan 19 2018

...Near Critical Fire Weather Conditions over Parts of the Area
today...

Upper trough moving onshore across the Pacific Coast will produce
increasing southwesterly flow over southern Colorado today and
tonight. West to southwest winds will begin to increase in the high
country today with gusts to 40 mph possible in the mountains by
afternoon, and gusts to around 30 mph along and near eastern
mountain slopes. With humidity falling below 15 percent this
afternoon, elevated fire danger will develop over the eastern
mountains and plains, although the duration of the event looks too
short to warrant fire weather highlights. Regardless, there will be
some local concerns for brief periods, especially in wind prone
areas around Walsenburg and across Fort Carson. It is advisable to
postpone outdoor burning or any other activities that could
accidentally start a wildfire. Max temps will be very mild for
January, reaching levels 20-25f above average and nearing records in
many areas. The normal, record and forecast for Colorado Springs
tomorrow is 43, 70(1986) and 67. For Pueblo, those numbers are 47,
75(1986) and 71. For Alamosa, those numbers are 34, 56(2000) and 53.

Overnight, winds will continue leading to a rather mild night at
most locations, and a few spots in the lee of the eastern mountains
may stay above freezing the entire night. Precip may reach wrn CO by
early morning Sat, but any snow should stay west of the Continental
Divide through sunrise and will keep a dry forecast in place.

.LONG TERM...(Saturday through Thursday)
Issued at 420 AM MST Fri Jan 19 2018

...Snow and a much colder airmass to spread across the area
Saturday night and Sunday...

Saturday-Sunday night...Latest models remain in good agreement of a
strong upper trough moving across the Great Basin Saturday morning,
bringing snow and a much colder airmass to south central and
southeast Colorado, as it moves across the area through the late
weekend.

Moisture increases within the increasing southwest flow aloft across
the area ahead of Great Basin system on Saturday, and will see
increasing chances of snow along and west of the ContDvd through the
late morning, with snow becoming likely through the late afternoon
across the Eastern San Juan and La Garita Mountains, where a few
inches of wind driven snow could accumulate through the afternoon.

Further east, another warm and breezy to windy day looks to be in
the offing. Temperatures aloft cool through the day, however, with
the downslope flow, will again see temperatures in the 60s to lower
70s across the lower elevations, warmest across the far Southeast
Plains. Induced lee troughing across the plains on Saturday will
help mix down gusty southwest winds of 20 to 30 mph for areas along
and west of the I-25 Corridor through the late morning and
afternoon. This will again lead to increased fire danger, however,
latest models remain in agreement of increasing moisture within the
southerly flow to keep humidity levels at or above 20 percent
through the afternoon, and will not issue any fire weather
highlights at this time.

The broad upper trough continues across the Eastern Great Basin
Saturday afternoon and develops a closed low across the Four Corners
Region Saturday night. Models then lift this system north and east
across the far Southeast Plains through the day Sunday and into
North Central Kansas Sunday night. Although the exact track of this
system is not certain, the current projected path would continue to
bring snow to the ContDvd, especially the Southwest Mountains,
through Sunday morning, with the focus of snow across the ContDvd
shifting to the Central Mountains through the afternoon with
developing northwest flow. With the favored southwest orographic
flow, have issued a winter storm watch for Zones 66 and 68 (Eastern
San Juan and La Garita Mts) late Saturday afternoon through Sunday
afternoon, with a foot or more possible, along expected hazardous
travel with blowing snow across the high mountain passes. Snow
across the Central Mountains and lower elevations of the Southwest
Mountains looks to be in the 4 to 8 inch range, and later shifts
will likely need winter weather advisories for Saturday night and
Sunday.

Snow is expected to spread east across the high mountain valleys
through the Eastern Mountains Saturday night, with the current
forecasted track of the system supporting a period of wind driven
snow, with strong and gusty north winds 20 to 40 mph behind the
systems associated cold front, spreading east across the I-25
Corridor through the far southeast plains Sunday morning through
Sunday evening. Current grids indicating advisory amount snow fall
of 3 to 9 inches across the Eastern Mountains, with 3 to 6 inches of
wind driven snow possible across Palmer Divide and Northern El Paso
County. Snow fall of 2 to 4 inches will be possible across the
Southern I-25 Corridor and Raton Mesa, with 1 to 3 inches possible
across the rest of the southeast plains. May also need winter
highlights across portions of the plains on Sunday, as snow combined
with the gusty north winds, will likely create hazardous travel
conditions. Again, a further north or south track to this system
could bring less or more snow to the eastern plains. At any rate,
temperatures on Sunday will be much colder than Saturday, with highs
mainly in the 20s and 30s areawide, warmest across the far Southeast
Plains.

Monday-Thursday...Moderating northwest flow aloft on Monday becomes
more westerly on Tuesday and increasing southwesterly on Wednesday,
ahead of another system digging into the Great Basin. This will lead
to a generally dry forecast through the period, save possible light
snow showers across the Central Mountains, along with a slow warming
trend to slightly above seasonal levels by Wednesday. Models do
agree on this system bringing another round of snow and colder
temperatures to the area for later in the work week, through differ
on its strength and location as it moves across the Rockies.

&&

.AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon)
Issued at 1028 AM MST Fri Jan 19 2018

A ridge of high pressure continues to build over southern
Colorado. Expect gusty westerly winds at KPUB during the early
afternoon hours. KCOS is experiencing blocked flow due to Pikes
Peak, but the TAFs indicate the westerly winds will prevail early
this afternoon. If Pikes Peak continues to block the flow,
variable winds will continue. KALS will experience gusting winds
late tomorrow morning. All sites will remain VFR throughout the
forecast period.

&&

.PUB WATCHES/WARNINGS/ADVISORIES...
Winter Storm Watch from Saturday afternoon through Sunday
afternoon for COZ066-068.

&&

SHORT TERM...PETERSEN
LONG TERM...MW
AVIATION...SKELLY
Hazardous weather outlook, Jan 19, 5:24 AM MST, 9 hours 52 minutes before
Hazardous Weather Outlook...CORRECTED
National Weather Service Pueblo CO
524 AM MST Fri Jan 19 2018

COZ058>089-093>099-201230-
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-
524 AM MST Fri Jan 19 2018

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

.DAY ONE...Today and Tonight

The combination of low humidity and gusty west winds will lead to
high fire danger this afternoon over the eastern mountains and along
the Interstate 25 corridor. Outdoor burning or any other activities
that could accidentally start a wildfire today should be
postponed.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Near-critical fire weather conditions will be possible across the
across portions of the southeastern Colorado Plains on Saturday,
as west to southwest winds increase ahead of a strong storm
system moving into the Great Basin.

This storm system looks to move into the Four Corners Region
Saturday night, and then continue across southeastern Colorado
through the day Sunday, before lifting into north central Kansas
into Sunday night. This system is expected to bring gusty winds
and moderate to heavy snowfall to the higher terrain of the
Continental Divide late Saturday afternoon through Sunday morning,
with hazardous travel expected across the higher mountain passes
through the day Sunday.

The exact track of this system remains in question, however, the
current projected path would support a period of wind driven snow
across Eastern Colorado on Sunday, with strong and gusty north
winds expected Sunday and Sunday night behind a passing cold
front. Light to moderate snow accumulations will be possible
across portions of the Eastern Mountains, the Palmer Divide and
Raton Mesa, with generally light snow accumulations possible
across the rest of the Southeast Plains. Hazardous travel
conditions will also be possible across Southeast Colorado on
Sunday, with the potential for poor visibilities in snow and
blowing snow.

Another weak storm system could bring some light accumulating
snow to the higher terrain of the Central Mountains Monday and
Tuesday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters will not be needed today or tonight.

10/23

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 19, 4:13 AM MSTWinter Storm WatchPUBConejos, Mineral, Rio Grande, Saguache11 hr
Jan 19, 3:16 PM MSTWinter Weather AdvisoryPUBAlamosa, Baca, Bent, Chaffee, Conejos, Costilla and 15 more53 hr

Nearby

Winter Storm Watches in Colorado, 2018Every winter storm watch in 2018

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.