Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

West Climate Region

Precipitation Rankings, April 2004

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 2004
1-Month
0.83"
(21.08mm)
1.33"
(33.78mm)
-0.50"
(-12.70mm)
37th Driest
Driest since:
1909
92nd Wettest
Wettest since:
1935
Mar–Apr 2004
2-Month
1.61"
(40.89mm)
3.67"
(93.22mm)
-2.06"
(-52.33mm)
11th Driest
Driest since:
2008
118th Wettest
Wettest since:
1983
Feb–Apr 2004
3-Month
5.74"
(145.80mm)
6.39"
(162.31mm)
-0.65"
(-16.51mm)
58th Driest
Driest since:
1997
71st Wettest
Wettest since:
1983
Ties: 2016
Jan–Apr 2004
4-Month
7.29"
(185.17mm)
9.37"
(238.00mm)
-2.08"
(-52.83mm)
44th Driest
Driest since:
2022
85th Wettest
Wettest since:
1995
Dec 2003–Apr 2004
5-Month
11.39"
(289.31mm)
11.92"
(302.77mm)
-0.53"
(-13.46mm)
71st Driest
Driest since:
1977
57th Wettest
Wettest since:
1978
Nov 2003–Apr 2004
6-Month
13.18"
(334.77mm)
13.79"
(350.27mm)
-0.61"
(-15.50mm)
63rd Driest
Driest since:
1977
65th Wettest
Wettest since:
1983
Ties: 1905
Oct 2003–Apr 2004
7-Month
13.28"
(337.31mm)
14.82"
(376.43mm)
-1.54"
(-39.12mm)
58th Driest
Driest since:
1977
70th Wettest
Wettest since:
1983
Sep 2003–Apr 2004
8-Month
13.51"
(343.15mm)
15.31"
(388.87mm)
-1.80"
(-45.72mm)
57th Driest
Driest since:
1977
71st Wettest
Wettest since:
1983
Aug 2003–Apr 2004
9-Month
14.32"
(363.73mm)
15.70"
(398.78mm)
-1.38"
(-35.05mm)
58th Driest
Driest since:
1977
70th Wettest
Wettest since:
1983
Jul 2003–Apr 2004
10-Month
14.66"
(372.36mm)
16.03"
(407.16mm)
-1.37"
(-34.80mm)
58th Driest
Driest since:
2021
70th Wettest
Wettest since:
1983
Jun 2003–Apr 2004
11-Month
14.72"
(373.89mm)
16.52"
(419.61mm)
-1.80"
(-45.72mm)
53rd Driest
Driest since:
2021
75th Wettest
Wettest since:
1983
May 2003–Apr 2004
12-Month
15.73"
(399.54mm)
17.44"
(442.98mm)
-1.71"
(-43.44mm)
57th Driest
Driest since:
1977
71st Wettest
Wettest since:
1983
Nov 2002–Apr 2004
18-Month
31.44"
(798.58mm)
31.22"
(792.99mm)
0.22"
(5.59mm)
69th Driest
Driest since:
1977
58th Wettest
Wettest since:
1983
May 2002–Apr 2004
24-Month
32.72"
(831.09mm)
34.90"
(886.46mm)
-2.18"
(-55.37mm)
51st Driest
Driest since:
1977
76th Wettest
Wettest since:
1983
May 2001–Apr 2004
36-Month
46.00"
(1,168.40mm)
52.30"
(1,328.42mm)
-6.30"
(-160.02mm)
34th Driest
Driest since:
2022
92nd Wettest
Wettest since:
1984
May 2000–Apr 2004
48-Month
60.26"
(1,530.60mm)
69.56"
(1,766.82mm)
-9.30"
(-236.22mm)
21st Driest
Driest since:
2015
104th Wettest
Wettest since:
1998
May 1999–Apr 2004
60-Month
76.08"
(1,932.43mm)
86.83"
(2,205.48mm)
-10.75"
(-273.05mm)
16th Driest
Driest since:
1933
108th Wettest
Wettest since:
1999

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