#Snowpack news: Arkansas River Basin = 148% (Best in #Colorado)

Click on a thumbnail below to view a gallery of snowpack data for Colorado.

“The world’s people have spoken. Time is running out. They want you, the decision-makers, to act now” — David Attenborough #ActOnClimate #KeepItInTheGround

Temperatures increased across almost all of the Southwest region from 1901 to 2016, with the greatest increases in southern California and western Colorado. This map shows the difference between 1986–2016 average temperature and 1901–1960 average temperature.23 Source: adapted from Vose et al. 2017.23. Map credit: The National Climate Assessment 2018

From The Guardian (Damian Carrington):

The collapse of civilisation and the natural world is on the horizon, Sir David Attenborough has told the UN climate change summit in Poland.

The naturalist was chosen to represent the world’s people in addressing delegates of almost 200 nations who are in Katowice to negotiate how to turn pledges made in the 2015 Paris climate deal into reality.

As part of the UN’s people’s seat initiative, messages were gathered from all over the world to inform Attenborough’s address on Monday. “Right now we are facing a manmade disaster of global scale, our greatest threat in thousands of years: climate change,” he said. “If we don’t take action, the collapse of our civilisations and the extinction of much of the natural world is on the horizon.”

“Do you not see what is going on around you?” asks one young man in a video message played as part of a montage to the delegates. “We are already seeing increased impacts of climate change in China,” says a young woman. Another woman, standing outside a building burned down by a wildfire, says: “This used to be my home.”

Attenborough said: “The world’s people have spoken. Time is running out. They want you, the decision-makers, to act now. Leaders of the world, you must lead. The continuation of civilisations and the natural world upon which we depend is in your hands.”

Attenborough urged everyone to use the UN’s new ActNow chatbot, designed to give people the power and knowledge to take personal action against climate change.

Recent studies show the 20 warmest years on record have been in the past 22 years, and the top four in the past four years. Climate action must be increased fivefold to limit warming to the 1.5C scientists advise, according to the UN.

The COP24 summit was also addressed by António Guterres, the UN secretary general. “Climate change is running faster than we are and we must catch up sooner rather than later before it is too late,” he said. “For many, people, regions and even countries this is already a matter of life or death.”

Guterres said the two-week summit was the most important since Paris and that it must deliver firm funding commitments. “We have a collective responsibility to invest in averting global climate chaos,” he said.

He highlighted the opportunities of the green economy: “Climate action offers a compelling path to transform our world for the better. Governments and investors need to bet on the green economy, not the grey.”

[…]

Ricardo Navarro, of Friends of the Earth in El Salvador, said: “We must build an alternative future based on a just energy transformation. We face the threat of rightwing populist and climate-denying leaders further undermining climate protection and racing to exploit fossil fuels. We must resist.”

Another goal of the summit is for nations to increase their pledges to cut carbon emissions; currently they are on target for a disastrous 3C of warming. The prime minister of Fiji, Frank Bainimarama, who led the 2017 UN climate summit, said his country had raised its ambitions. He told the summit: “If we can do it, you can do it.”

#Snowpack news: SW #Colorado basins are still way behind #drought

Westwide SNOTEL snowpack map December 2, 2018 via the NRCS.

From The Colorado Sun (Jesse Paul):

The U.S. Drought Monitor shows conditions have improved only marginally since the summer and meteorologists and water advocates say whether the snow is adequate to quench the most parched parts of the state won’t be known until spring, when the runoff begins.

Areas of Colorado that most need the snow still are at below-normal snowpack levels compared to the deep snow reported in northern Colorado.

“We have been able to rebound a little bit with these storms,” said Megan Stackhouse, a meteorologist with the National Weather Service in Grand Junction. “Durango is in our forecast area, they are still 8.66 inches below normal (precipitation) for the year so far.”

West Drought Monitor November 27, 3018.
Colorado Drought Monitor November 27, 3018.

Snowpack in the San Miguel, Dolores, Animas and San Juan river basins was at 70 percent of normal as of Friday. The Gunnison River basin was at 94 percent of normal. The Rio Grande River basin was at 86 percent of normal and the Colorado River basin — which hydrates much of the the Front Range — was at 133 percent of normal.

The South Platte River basin’s snowpack level was 155 percent of normal heading into the weekend, when more snow fell.

Overall, the state’s snowpack level on Friday was 114 percent of normal, 108 percent of average, and 186 percent compared to last year’s level at this time.

From The Deseret News (Amy Joi O’Donoghue):

A congressionally mandated climate change report predicts dire consequences for the United States if greenhouse gas emissions are not immediately reduced, adding that some of the most severe impacts will occur in Utah and other parts of the Southwest.

Utah experts say those changes are not on the doorstep, they’re already here.

“We are just on the fringe of this. It is only going to get more intense with droughts that are longer and hotter, and snow becoming less common until we have no snow at all,” predicted Brian McInerney, senior hydrologist with the National Weather Service in Salt Lake City…

The report’s findings include:

• The season heat wave length in many U.S. cities has increased by 40 days since 1960.

• Large declines in Western states’ snowpacks have occurred from 1955 to 2016.

• Atmospheric concentration of carbon dioxide, the largest contributor to human-caused warming, has increased 40 percent since the industrial era.

• Alaska is warming faster than any other U.S. state and has warmed twice as fast as the global average since the mid-20th century.

In Utah, summer temperatures are sizzling as well, the nighttime lows are getting higher, and the state continues to struggle with the impacts of protracted drought.

From The Colorado Springs Gazette (Liz Forster):

“Drought is embedded and holding in the Four Corners, mostly over New Mexico and Colorado,” said Royce Fontenot, senior service hydrologist with the National Weather Service in Albuquerque. “It’s really had an impact on water supply, and we’re seeing record-low stream flows.”

Almost 82 percent of the Intermountain West is in drought, with 8.64 percent in exceptional drought, according to the U.S. Drought Monitor. Colorado is a bit worse. About 83 percent is in drought and 13.35 percent of the state, mostly in the southwest corner, is in exceptional drought.

Stream flows in the southwest portion of the state also are much below normal, according to data from the U.S. Geological Survey. Thirteen streamflow stations between Mesa and Archuleta counties were reported as much below normal compared with historic levels, three as below normal and five as normal.

The dearth of water is obvious in Blue Mesa Reservoir, the largest reservoir in Colorado. Driving along U.S. 50, water level lines of years past are etched into the dry reservoir walls. The data paints an even more startling picture: the reservoir is at 43 percent of its average capacity recorded between 1985 and 2016. That measurement puts its November water volume in below the 10th percentile of historic levels.

Downstream, Lake Powell made headlines this year when it dropped to less than half full. This year was the second driest year on record for the major reservoir in Arizona, lagging just behind 2002.

Although eastern Colorado received “great” precipitation events toward the end of the summer and the beginning of the fall, it was not enough to satiate the parched soils, said Fontenot.

“The streams just didn’t get what they need,” he said.

To fully lift the Four Corners out of the drought by June, the region would need to receive 173 percent of normal precipitation, NOAA models show.

Early-season snow raised the snowpack in parts of Colorado to more than 200 percent of normal. Snow has continued to periodically fall, but so has the percent of median snowpack.

As of Nov. 29, the state sat at 117 percent of median snowpack. The northern and eastern part of the state recorded between 125 percent and 151 percent of median, while the San Miguel, Dolores, Animas and San Juan river basins reported 70 percent of median…

“It’s the new normal here, and we have to get used to these trends and cycles where the water situation is more iffy year to year,” Steve Berry, spokesman for Colorado Springs Utilities.

Systemwide, Utilities’ reservoirs are at 74 percent capacity compared with 87 percent capacity this time last year.