Colorado Weather Update
description
Transcript of Colorado Weather Update
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Colorado Colorado Weather UpdateWeather Update
http://ccc.atmos.colostate.edu Presented at Colorado Wheat Day, Colorado Wheat Growers Association, November 20, 2004, Estes Park, ColoradoPrepared by Odie Bliss
Thomas B. McKee (Professor Emeritus)Thomas B. McKee (Professor Emeritus)Colorado Climate CenterColorado Climate CenterColorado State UniversityColorado State University
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Statewide Mean Annual Temperature History
Colorado Average Temperatures
40.0
41.0
42.0
43.0
44.0
45.0
46.0
47.0
48.0
49.0
50.0
Year
Tem
per
atu
re (
deg
ree
F)
Actual Temperature Average Temperature
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Colorado Average Precipitation
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Statewide Annual Precipitation History
http://lwf.ncdc.noaa.gov/oa/climate/research/cag3/CO.html
Colorado Annual Precipitation
7
9
11
13
15
17
19
21
23
1895
1900
1905
1910
1915
1920
1925
1930
1935
1940
1945
1950
1955
1960
1965
1970
1975
1980
1985
1990
1995
2000
Year
Pre
cip
itat
ion
(in
ches
)
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Monthly Average Pan EvaporationAverage Monthly Pan Evaporation
for Akron and Springfield, Colorado
0
2
4
6
8
10
12
14
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Month
Ev
ap
ora
tio
n (
inc
he
s)
Akron Springfield
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3-Month SPIFraction of Colorado in Drought
Based on 3 month SPI(1890 - September 2004)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1890
1893
1896
1899
1902
1905
1908
1911
1914
1917
1920
1923
1927
1930
1933
1936
1939
1942
1945
1948
1951
1954
1957
1960
1964
1967
1970
1973
1976
1979
1982
1985
1988
1991
1994
1997
2001
2004
Year
Fra
ctio
n (
in p
erce
nt)
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12-Month SPIFraction of Colorado in Drought
Based on 12 month SPI(1890 - September 2004)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1890
1893
1896
1899
1902
1905
1908
1911
1914
1917
1920
1923
1927
1930
1933
1936
1939
1942
1945
1948
1951
1954
1957
1960
1964
1967
1970
1973
1976
1979
1982
1985
1988
1991
1994
1997
2001
2004
Year
Fra
ctio
n (
in p
erce
nt)
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24-Month SPIFraction of Colorado in Drought
Based on 24 month SPI(1890 - September 2004)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1890
1893
1896
1899
1902
1905
1908
1911
1914
1917
1920
1923
1927
1930
1933
1936
1939
1942
1945
1948
1951
1954
1957
1960
1964
1967
1970
1973
1976
1979
1982
1985
1988
1991
1994
1997
2001
2004
Year
Fra
ctio
n (
in p
erce
nt)
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48-Month SPIFraction of Colorado in Drought
Based on 48 month SPI(1890 - September 2004)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
18
90
18
92
18
94
18
96
18
98
19
00
19
02
19
04
19
06
19
08
19
10
19
12
19
14
19
16
19
18
19
20
19
22
19
24
19
26
19
28
19
30
19
32
19
34
19
36
19
38
19
40
19
42
19
44
19
46
19
48
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50
19
52
19
54
19
56
19
58
19
60
19
62
19
64
19
66
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68
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70
19
72
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74
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19
78
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80
19
82
19
84
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86
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88
19
90
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92
19
94
19
96
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98
20
00
20
02
20
04
Year
Fra
ctio
n (
in p
erce
nt)
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The Evolution of Our Recent Drought
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1999 Water Year Precipitation
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2000 Water Year Precipitation
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2001 Water Year Precipitation
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2002 Water Year Precipitation
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US Drought Monitor, Oct 1, 2002
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2003 Water Year Precipitation
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US Drought Monitor, Oct 1, 2003
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Where Do We Stand Now?
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Water Year 2004 Precipitation as Percent of Average
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Growing Season (May-Sep) 2004 Precipitation as Percent of Average
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US Drought Monitor, Oct 1, 2004
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WY2004 Temperature DeparturesWater Year 2004
-6
-4
-2
0
2
4
6
8
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
Dep
artu
re fr
om a
vera
ge, d
egre
e F
Eastern Plains Foothills Mountains Western Valleys
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South Platte Basin Snowpack
http://www.co.nrcs.usda.gov/snow/data/basins.html
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Reservoir LevelsColorado Statewide Reservoir Levels on October 1st
for Years 1997-2004
133
122
130
100
93
48
74 72
0
20
40
60
80
100
120
140
Oct 1. 1997 Oct 1. 1998 Oct 1. 1999 Oct 1. 2000 Oct 1. 2001 Oct 1. 2002 Oct 1. 2003 Oct 1. 2004
Per
cen
t o
f A
vera
ge
Provisional data from the NRCS
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Fort Collins 2004 Water Year Precipitation
Fort Collins2004 Water Year
(through Oct '03 - Sep '04)
0
5
10
15
20
25
30
Month
Acc
um
ula
ted
Pre
cip
itat
ion
(in
ches
)
30 Year Averages-1971-2000 Max Year - 1961 Min Year - 1966
Period of Record Average - 1890 - 2002 2004 Water Year 2002 WY
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Akron 2004 Water Year PrecipitationAkron 4E
2004 Water Year (through Oct '03 - Sep '04)
0
5
10
15
20
25
30
Months
Acc
um
ula
ted
Pre
cip
itat
ion
(In
ches
)
30 Year Averages-1971-2000 Max Year - 1915 Min Year - 2002
Period of Record Average - 1906 - 2002 2004 Water Year Accumulated
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Burlington 2004 Water Year PrecipitationBurlington
2004 Water Year (through Oct '03 - Sep '04)
0
5
10
15
20
25
30
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
Months
Ac
cu
mu
late
d P
rec
ipit
ati
on
(In
ch
es
)
30 Year Averages-1971-2000 Max Year - 1915 Min Year - 1954
Period of Record Average - 1892-2002 2004 Water Year 2002 Water Year Accumulated
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Cheyenne Wells 2004 WY PrecipitationCheyenne Wells2004 Water Year
(through Oct '03 - Sep '04)
0
5
10
15
20
25
30
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
Months
Ac
cu
mu
late
d P
rec
ipit
ati
on
(In
ch
es
)
30 Year Averages-1971-2000 Max Year - 1909 Min Year - 1956
Period of Record Average - 1971 - 2002 2004 Water Year 2002 Water Year Accumulated
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October 2004 Precipitation Totals
Fort Collins – 1.05” (107% average)Akron – 0.80” (94% average)Burlington – 0.73” (78% average)Cheyenne Wells – 0.41” (51% average)
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What Comes Next?
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TemperatureDec-Feb 2004
From the Colorado Prediction Centerhttp://www.cpc.ncep.noaa.gov/products/predictions/multi_season/13_seasonal_outlooks/color/churchill.html
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PrecipitationDec-Feb 2004
From the Colorado Prediction Centerhttp://www.cpc.ncep.noaa.gov/products/predictions/multi_season/13_seasonal_outlooks/color/churchill.html
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TemperatureMar-May 2005
From the Colorado Prediction Centerhttp://www.cpc.ncep.noaa.gov/products/predictions/multi_season/13_seasonal_outlooks/color/churchill.html
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PrecipitationMar-May 2005
From the Colorado Prediction Centerhttp://www.cpc.ncep.noaa.gov/products/predictions/multi_season/13_seasonal_outlooks/color/churchill.html
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TemperatureMay-Jul 2005
From the Colorado Prediction Centerhttp://www.cpc.ncep.noaa.gov/products/predictions/multi_season/13_seasonal_outlooks/color/churchill.html
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PrecipitationMay-Jul 2005
From the Colorado Prediction Centerhttp://www.cpc.ncep.noaa.gov/products/predictions/multi_season/13_seasonal_outlooks/color/churchill.html
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CoAgMetWeather Data for Agriculture
Automated weather stations with daily and hourly readings of:
TemperatureHumidityWindPrecipitationSolar energyEvapotranspiration
http://www.coagmet.com
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Colorado Climate Magazine
Good bedtime reading about the climate of Colorado -- recent and historic
$15/year subscription pays printing and mailing costs
http://ccc.atmos.colostate.edu/magazine.php
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Colorado Climate CenterColorado State University
Data and Power Point Presentations available for downloading
http://ccc.atmos.colostate.edu
click on “Drought”
then click on “Presentations”