Drought Information Statement
Issued by NWS Denver/Boulder, CO

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Drought Information Statement
National Weather Service Denver/Boulder CO
600 PM MDT Fri Mar 31 2017

...Drought Conditions Improve on the Northeast and East Central
Colorado Plains...

Synopsis...
"While temperatures were once again much above average across the
Upper Colorado River Basin and eastern Colorado over the last
week...the large-scale weather pattern has shifted in favor of
wetter conditions. The notable areas currently in drought which
remained dry are northern Larimer and Weld Counties near the
Cheyenne Ridge" as stated in the March 28th Colorado NIDIS Weekly
Drought Summary.

Local Areas Affected...
Moderate Drought /D1/ was replaced by Abnormally Dry conditions /D0/
in northeast Colorado on the March 28th US Drought Monitor. Severe
Drought /D2/ was replaced by Moderate Drought /D1/ in Lincoln County
on the east central plains and western Douglas County along the
Front Range Urban Corridor. However...Severe Drought /D2/ continued
from the Denver Metro area north to just south of the Colorado
Wyoming border.

Hydrologic Summary...
From the Colorado NIDIS Weekly Drought Summary: "Streamflows are
much above average across the Upper Colorado River Basin...and for
the most part...above average in eastern Colorado. The above average
streamflows are being heavily driven by early snowmelt. The healthy
snowpack numbers leave reason to believe that streamflows should
remain in the normal range once peak snowmelt season hits. Along
with the increased streamflows...major reservoirs are beginning
their seasonal recharge.

Soil moisture is now much above average in the mid-to-high
elevations of western Colorado. This is also a direct result of
early melt. Eastern Colorado soil moisture has improved over the
past week...but deficits still exist primarily due to the warm and
dry second half of the 2016 growing season. "

On March 31st the snowpack ranged from 103 and 104 percent of normal
in the North and South Platte Basins to 108 percent of normal in the
upper Colorado River Basin.

Climate Summary...
March temperatures have been 1 to 10 degrees above normal. March
precipitation is above normal on the plains...near to below normal
in the mountains and remained below normal along the lower Front
Range Foothills and Urban Corridor. Preliminary NWS Cooperative
Observer March 1st through 30th precipitation totals are listed
below:

Location            Elev     2017   Normal  Departure  % Normal
--------            ----     ----   ------  ---------  --------
Above 8000 feet
 Dillon 1E          9065     0.90     0.98     -0.08       92
 Georgetown         8520     1.01     1.60     -0.59       63
 Georgetown 4SW    10020     2.11     1.86      0.25      113
 Grant              8675     1.09     1.22     -0.13       89
 Walden             8056     0.19     0.76     -0.57       25
 Winter Park        9108     1.79     2.45     -0.66       73

6000 to 8000 feet
 Cheesman Reservoir 6880     0.79     1.40     -0.61       56
 Conifer 6NE        7180     0.73     1.93     -1.20       38
 Evergreen          6985     2.14     2.35     -0.21       91
 Virginia Dale 7ENE 7015     0.33     1.22     -0.89       27
 Williams Fork Rsvr 7618     0.42     0.95     -0.53       44

Front Range Urban Corridor
 Boulder            6484     1.09     2.11     -1.02       52
 Denver area        5284     0.78     0.88     -0.10       89
 Fort Collins       5004     0.73     1.54     -0.81       47
 Greeley            4715     0.57     1.08     -0.51       53
 Loveland 2N        5080     0.63     1.52     -0.89       41
 Northglenn         5407     0.40     1.15     -0.75       35
 Wheat Ridge        5398     0.56     1.81     -1.25       31

Northeast/East Central Colorado Plains
 Akron 4E           4540     1.37     0.89      0.48      154
 Holyoke            3780     1.34     1.00      0.34      134
 Karval             5075     2.19     0.79      1.40      277
 Leroy 5WSW         4550     1.30     0.95      0.35      137
 New Raymer 21N     5180     1.15     0.98      0.17      117
 Woodrow 6NNE       4374     1.37     0.88      0.49      156

Weather Outlooks...
Moist spring storm systems will continue to bring much needed
precipitation to the region through Tuesday night. The 6 to 10 day
outlook has a tilt toward above normal temperatures and below normal
precipitation.

&&

Related web sites...
Additional information on current drought conditions may be found
at the following web addresses...

Advanced Hydrologic Prediction Service (AHPS):
http://water.weather.gov/ahps2/index.php?wfo=bou

U.S. Drought Monitor:
http://droughtmonitor.unl.edu/

Colorado Climate Center/NIDIS Drought Presentations:
http://climate.colostate.edu/drought_webinar.php

NWS Climate Prediction Center Outlooks:
http://www.cpc.ncep.noaa.gov/products/predictions/
http://www.cpc.ncep.noaa.gov/products/expert_assessment/
sdo_summary.php

Natural Resources Conservation Service:
https://www.nrcs.usda.gov/wps/portal/nrcs/main/co/snow/

CWCB Water Availability Task Force Presentations:
http://cwcb.state.co.us/public-information/
flood-water-availability-task-forces/Pages/main.aspx

USGS DroughtWatch and WaterWatch:
co.water.usgs.gov/drought/
waterwatch.usgs.gov/?m=real&r=co

Acknowledgments...
The Drought Monitor is a multi-agency effort involving the National
Weather Service and National Climatic Data Center, the U.S.
Department of Agriculture, State and Regional Center Climatologists
and the National Drought Mitigation Center. Information for this
statement has been gathered from NWS and FAA observation
sites...cooperative network stations, Natural Resources Conservation
Service SNOTEL network...CoCoRaHS network as well as the Colorado
Division of Water Resources...U.S. Geological Survey...U.S. Bureau
of Reclamation and U.S. Army Corp or Engineers stream and reservoir
gages.

Questions or Comments...
If you have any questions or comments about this drought information
please contact...
National Weather Service
325 Broadway
Boulder CO 80305
303-494-4221


$$
tlh


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