Drought Information Statement
Issued by NWS Denver/Boulder, CO

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AXUS75 KBOU 122356
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059-069-073-075-087-093-095-115-117-121-123-300000-

DROUGHT INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
455 PM MST THU JAN 12 2017

..DROUGHT CONDITIONS IMPROVE IN THE NORTH CENTRAL COLORADO HIGH
COUNTRY...

SYNOPSIS...

FROM EARLY TO MID NOVEMBER 2016 THE NORTH CENTRAL COLORADO ROCKIES
HAD ONE OF ITS LOWEST SNOWPACKS IN THE PAST 40 YEARS. AS OF JANUARY
12TH IT HAD ONE OF ITS HIGHEST. DROUGHT CONDITIONS ARE IMPROVING
WITH DROUGHT AND ABNORMALLY DRY CONDITIONS REDUCED THIS WEEK IN THE
NORTH CENTRAL COLORADO HIGH COUNTRY.

LOCAL AREAS AFFECTED...

ON THE JANUARY 10TH U.S. DROUGHT MONITOR...ABNORMALLY DRY CONDITIONS
/D0/ WERE REMOVED FROM MOST AREAS WEST OF THE CONTINENTAL DIVIDE.
MODERATE /D1/ DROUGHT IN THE MOUNTAINS ABOVE 9000 FEET EAST OF
THE DIVIDE HAS BEEN REPLACED WITH ABNORMALLY DRY CONDITIONS /D0/.

HYDROLOGIC SUMMARY...

THE MOUNTAIN SNOWPACK WAS ONLY 4 PERCENT OF NORMAL IN THE UPPER
COLORADO RIVER BASIN AND 12 PERCENT OF NORMAL IN THE NORTH AND SOUTH
PLATTE BASINS ON NOVEMBER 15TH. A FEW DAYS LATER HIGH PRESSURE
FINALLY GAVE WAY TO NORTHWEST FLOW ALOFT. THIS ALLOWED THE STORM
TRACK TO MOVE SOUTH INTO COLORADO. BRIAN DOMONKOS WITH THE NATURAL
RESOURCES CONSERVATION SERVICE STATED "ACCORDING TO THE SNOTEL
DATA...FROM NOVEMBER 17TH THROUGH JANUARY 1ST 2017 SNOWPACK IN THE
MOUNTAINS GREW AT THE FASTEST RATE DATING BACK TO 1986 WITH A
STATEWIDE GAIN OF 7.4 INCHES OF SNOW WATER EQUIVALENT". THE SNOWPACK
HAS CONTINUED TO CLIMB TO 158 AND 159 PERCENT OF NORMAL IN THE SOUTH
PLATTE AND UPPER COLORADO RIVER BASINS AND 144 PERCENT OF NORMAL IN
THE NORTH PLATTE BASIN ON JANUARY 12TH.

COMBINED BASIN RESERVOIR STORAGE REMAINED IN GOOD SHAPE AT AROUND
105 PERCENT OF AVERAGE ON JANUARY 1ST.

STREAMFLOW REMAINS MOSTLY IN THE NORMAL RANGE FOR THIS TIME OF YEAR.

CLIMATE SUMMARY...

PRECIPITATION THE PAST MONTH HAS BEEN MUCH ABOVE NORMAL IN THE NORTH
CENTRAL MOUNTAINS AND ABOVE NORMAL ALONG THE URBAN CORRIDOR.
HOWEVER...PRECIPITATION ON THE COLORADO PLAINS CONTINUED TO BE ONLY
50 TO 75 PERCENT OF NORMAL IN A SWATH FROM SOUTHERN LINCOLN COUNTY
TO THE NORTHEAST CORNER OF COLORADO.

BELOW ARE UNOFFICIAL PRECIPITATION TOTALS FROM DECEMBER 1ST 2016
THROUGH JANUARY 11TH 2017:
LOCATION              2017    NORMAL   DEPARTURE   % NORMAL
--------              ----   -------   ---------  ---------
NORTH CENTRAL MOUNTAINS
 DILLON 1E            4.60     1.17       3.43       393
 ESTES PARK 1SSE      2.76     0.93       1.83       297
 GEORGETOWN           3.40     1.14       2.26       298
 GRAND LAKE 1NW       5.15     2.26       2.89       228
 GRANT                1.45     0.84       0.61       173
 LAKE GEORGE 8SW      0.58     0.47       0.11       123
 WALDEN               2.40     0.85       1.55       282
 WINTER PARK          6.49     3.09       3.40       210

NORTHERN FRONT RANGE URBAN CORRIDOR
 BOULDER              1.90     1.21       0.69       157
 DOWNTOWN DENVER      0.98     0.64       0.34       153
 FORT COLLINS         1.16     0.64       0.52       181
 GREELEY              1.17     0.73       0.44       160
 LAKEWOOD             0.98     0.86       0.12       114
 LOVELAND 2N          1.41     0.78       0.63       181
 NORTHGLENN           1.38     0.69       0.69       200
 RALSTON RESERVOIR    1.38     1.01       0.37       137

NORTHEAST AND EAST CENTRAL PLAINS
 FORT MORGAN          0.46     0.40       0.06       115
 HOLYOKE              0.28     0.60      -0.32        47
 HUGO 1NW             0.26     0.38      -0.12        68
 KARVAL               0.22     0.41      -0.19        54
 NEW RAYMER 21N       1.26     0.51       0.75       247
 SEDGWICK 5S          0.43     0.57      -0.14        75
 SHAW 4ENE            0.42     0.59      -0.17        71
 WOODROW 6NNE         0.98     0.50       0.48       196

PRECIPITATION/TEMPERATURE OUTLOOKS...

THE 6 TO 10 DAY...8 TO 14 DAY AND WEEK 3 OUTLOOKS INDICATE ABOVE
NORMAL PRECIPITATION.

&&

RELATED WEB SITES...

ADDITIONAL INFORMATION ON CURRENT DROUGHT CONDITIONS MAY BE FOUND
AT THE FOLLOWING WEB ADDRESSES /USE LOWER CASE LETTERS/:

LOCAL WEATHER...CLIMATE AND WATER INFORMATION
WWW.WEATHER.GOV/BOU

US DROUGHT MONITOR
DROUGHTMONITOR.UNL.EDU

COLORADO CLIMATE CENTER/NIDIS DROUGHT PRESENTATIONS
CLIMATE.COLOSTATE.EDU/DROUGHT_WEBINAR.PHP

NWS CLIMATE PREDICTION CENTER OUTLOOKS
WWW.CPC.NCEP.NOAA.GOV/PRODUCTS/PREDICTIONS/
WWW.CPC.NCEP.NOAA.GOV/PRODUCTS/EXPERT_ASSESSMENT/
SEASONAL_DROUGHT.PNG

US DEPARTMENT OF AGRICULTURE
HTTP://WWW.CO.NRCS.USDA.GOV/
HTTP://WWW.NASS.USDA.GOV/

CWCB WATER AVAILABILITY TASK FORCE PRESENTATIONS
CWCB.STATE.CO.US/PUBLIC-INFORMATION/FLOOD-WATER-AVAILABILITY-TASK-
FORCES/

ACKNOWLEDGMENTS...

THE DROUGHT MONITOR IS A MULTI-AGENCY EFFORT INVOLVING NOAA`S
NATIONAL WEATHER SERVICE...STATE AND REGIONAL CLIMATE CENTERS...
DEPARTMENT OF AGRICULTURE (USDA) 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 COLORADO DIVISION OF WATER RESOURCES... US GEOLOGICAL
SURVEY...BUREAU OF RECLAMATION AND US ARMY CORP OF ENGINEERS STREAM
AND RESERVOIR GAUGES.

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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