
From CBS Denver (Chris Spears):
A report released released Thursday by the U.S. Drought Monitor showed drought conditions growing across parts of Colorado.
An area of moderate drought that formed during late summer around Fort Collins has expanded south across Denver and into Douglas County, impacting over 1.5 million people. A second pocket of moderate drought can be found on the east-central plains.
In the nearby mountains and foothills conditions are abnormally dry, or in pre-drought. The same is true for parts of southern Colorado.
The current drought along Interstate 25 is what we call a meteorological or agricultural drought, meaning a short-term deficit in precipitation is having a significant impact on the landscape. Soils are dry and vegetation is not growing.
We are not in a hydrological drought which would imply a long period of below normal precipitation and major problems with water supply.
As of Oct. 20 Denver Water was reporting 89 percent water storage in their reservoir system, which is 3 percent above normal for this time of year.
The healthy number is thanks to abundant snow during 2015 and early 2016.
So what about the forecast for the upcoming winter?
Current long-range models are trending toward the development of La Nina between December and February, which can sometimes be bad for Colorado if it pushes the main storm track too far north.
From CBS Denver (Chris Spears):
As drought continues to develop along Colorado’s Front Range, Denver Water says supply is in good shape thanks to a cool and wet pattern during 2015 and continued efficient use of water by their customers.
“But while the short-term outlook is encouraging, we know we can never be sure what the next winter will bring,” said Travis Thompson.
Last week NOAA’s Climate Prediction Center reissued a La Niña Watch that was cancelled in September. Government forecasters now say there’s a 70 percent chance of the climate phenomenon developing during the upcoming winter.
A La Niña weather pattern during the winter season can sometimes mean dry and warm weather for Colorado because it tends to keep the main storm track north of the state.


