.author-name { display: none; }
WY 2019 Season Summary

WY 2019 Season Summary

SUMMARY

After a worrisome October and November when Colorado received very little precipitation and experienced very warm temperatures, winter finally kicked into action and Colorado started receiving abundant snowfall, building the snowpack rapidly during the months of December, January, and into February.  One of the big stories this winter season is the atmospheric rivers that fueled these productive storms, which were record breaking in some locations.  On the other end of the spectrum, one of the other big stories this winter is the observed warmest March on record.  The effects of this hot month (preceded by a very warm February) was a rapid warming of the snowpack and snowmelt at lower elevations and valleys, resulting in most stream gauges observed a 2-3 week bump in stream flow in mid-March thru the first part of April.  However, Colorado recovered from the hot/dry spell with a long stretch of regular precipitation beginning around March 23 – April 4.  A dry spell was again repeated April 5-19.  And, starting the latter part of April regular precipitation (however sparse) was observed steadily but intermittently until June 1.     

At the Center for Snow and Avalanche Studies’ (CSAS) Senator Beck Basin Study Area (SBB) at Red Mountain Pass, the primary Colorado Dust-on-Snow Program (CODOS) monitoring site, WY2017 produced a total of four separate dust-on-snow events, on the light side of a typical dust loading season based on observations going back to WY2005.  Dust season began relatively late in the season.  With the abundant moisture in the dust source area, the Southern Colorado Plateau, dust mobilization was kept in check until March when soils started drying out.  Dust-on-snow events March 5, 23, 31 and on April 9 were documented.  Surprisingly no dust events were observed the rest of April and May, although a couple haze events were noted.  On June 12 a big dust storm in the desert southwest was observed with the USGS dust cameras, additional dust on any remaining snow in the Colorado Mountains was not observed at lower elevations, but it is possible some higher elevation snow cover could have received additional dust from this event. Of the four documented dust events, two of these events were pretty heavy in their severity.  The end result, even though total mass loading of dust was light, with the location of the dust in the snowpack (i.e. upper portion) and its consequential role in snowmelt, we classified dust severity as “Average”, albeit the lighter side of average at SBB.  Northern and some Central CODOS sample sites in Colorado were classified as “Minimum” dust severity.  The transition from “Average” to “Minimum” severity took place in Central Colorado, thus some Central and all Southern CODOS sites were classified as “Average”.

CODOS Update: 1" Precip, Wintry Weekend, Journal Publication

CODOS Update: 1" Precip, Wintry Weekend, Journal Publication

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: Melt Rates, Plots, Still Lots of Snow

CODOS Update: Melt Rates, Plots, Still Lots of Snow

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: Dust Out, Sun Out, Surf's Up

CODOS Update: Dust Out, Sun Out, Surf's Up

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: CODOS Tour Part II, Dust Emerged at SASP

CODOS Update: CODOS Tour Part II, Dust Emerged at SASP

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: CODOS Tour Part I, Warm-Up In Forecast

CODOS Update: CODOS Tour Part I, Warm-Up In Forecast

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: Another Dust Event, SASP Hits Peak SWE Again, Chances of Precip This Week

CODOS Update: Another Dust Event, SASP Hits Peak SWE Again, Chances of Precip This Week

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: New Dust Events D5 & D6, 2" New Precip, Stormy Week Continues

CODOS Update: New Dust Events D5 & D6, 2" New Precip, Stormy Week Continues

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: D3 Emerging, Dust Event #4, Warm-up thru Thursday then more Precip

CODOS Update: D3 Emerging, Dust Event #4, Warm-up thru Thursday then more Precip

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Tour Update: Dust Present Throughout State, On Top Of Very Big Snowpack

CODOS Tour Update: Dust Present Throughout State, On Top Of Very Big Snowpack

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: Significant Dust, Precip in Forecast, Warm-Up this Weekend

CODOS Update: Significant Dust, Precip in Forecast, Warm-Up this Weekend

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: Data Plots and General Observations

CODOS Update: Data Plots and General Observations

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: Dust Event #3 Observed

CODOS Update: Dust Event #3 Observed

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: Live Graphics Page, DERC and Radiation Plots

CODOS Update: Live Graphics Page, DERC and Radiation Plots

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: March 26 SASP and Red Mt Observations

CODOS Update: March 26 SASP and Red Mt Observations

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: March CODOS Tour Report

CODOS Update: March CODOS Tour Report

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: D2 Observed, Snow Keeps Coming

CODOS Update: D2 Observed, Snow Keeps Coming

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: March 1 DERC, Dust and SWE Conditions

CODOS Update: March 1 DERC, Dust and SWE Conditions

SUMMARY

Colorado has begun March with “high” conditions completely dominating the range of snowpack conditions among major basins across the Colorado Mountains.   This update summarizes snowpack conditions state-wide and evaluates March 1st snow water equivalent (SWE) data from SNOTEL stations associated with our eleven CODOS sites and places them within the framework of the Dust Enhanced Runoff Classification scheme (DERC) developed by CODOS.  A summary is presented by individual Basin, and provides a site-specific analyses for each CODOS site (linked below). 

CODOS Update: Atmospheric River, Light D1, Current Snowpack Conditions

CODOS Update: Atmospheric River, Light D1, Current Snowpack Conditions

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.

CODOS Update: Current Conditions, SNOTEL Plots

CODOS Update: Current Conditions, SNOTEL Plots

Dust Free So Far and Healthy Snowpack

Greetings From Silverton, 

Despite a dry and lackadaisical start to winter, persistent snowcover in Senator Beck occurred on November 21, we have seen a major turn-around with a steady stream of productive storms.  We have received eight winter storms so far (Storm #8 Report will follow shortly) that in and of themselves have totaled ~10.0" of water.  Snow depth at Swamp Angel is at 4.5’ and the wind effected Senator Beck site is lingering around 1.5’.