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 2003

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 2003
1-Month
3.03"
(76.96mm)
1.33"
(33.78mm)
1.70"
(43.18mm)
122nd Driest
Driest since:
1909
7th Wettest
Wettest since:
1935
Mar–Apr 2003
2-Month
4.98"
(126.49mm)
3.67"
(93.22mm)
1.31"
(33.27mm)
105th Driest
Driest since:
2008
24th Wettest
Wettest since:
1983
Feb–Apr 2003
3-Month
6.98"
(177.29mm)
6.39"
(162.31mm)
0.59"
(14.98mm)
85th Driest
Driest since:
1997
44th Wettest
Wettest since:
1983
Jan–Apr 2003
4-Month
8.33"
(211.58mm)
9.37"
(238.00mm)
-1.04"
(-26.42mm)
58th Driest
Driest since:
2022
71st Wettest
Wettest since:
1995
Ties: 1981
Dec 2002–Apr 2003
5-Month
13.45"
(341.63mm)
11.92"
(302.77mm)
1.53"
(38.86mm)
89th Driest
Driest since:
1977
39th Wettest
Wettest since:
1978
Nov 2002–Apr 2003
6-Month
15.71"
(399.03mm)
13.79"
(350.27mm)
1.92"
(48.76mm)
89th Driest
Driest since:
1977
39th Wettest
Wettest since:
1983
Oct 2002–Apr 2003
7-Month
15.89"
(403.61mm)
14.82"
(376.43mm)
1.07"
(27.18mm)
86th Driest
Driest since:
1977
42nd Wettest
Wettest since:
1983
Sep 2002–Apr 2003
8-Month
16.14"
(409.96mm)
15.31"
(388.87mm)
0.83"
(21.09mm)
83rd Driest
Driest since:
1977
45th Wettest
Wettest since:
1983
Aug 2002–Apr 2003
9-Month
16.17"
(410.72mm)
15.70"
(398.78mm)
0.47"
(11.94mm)
78th Driest
Driest since:
1977
50th Wettest
Wettest since:
1983
Jul 2002–Apr 2003
10-Month
16.33"
(414.78mm)
16.03"
(407.16mm)
0.30"
(7.62mm)
77th Driest
Driest since:
2021
51st Wettest
Wettest since:
1983
Jun 2002–Apr 2003
11-Month
16.48"
(418.59mm)
16.52"
(419.61mm)
-0.04"
(-1.02mm)
71st Driest
Driest since:
2021
57th Wettest
Wettest since:
1983
May 2002–Apr 2003
12-Month
16.99"
(431.55mm)
17.44"
(442.98mm)
-0.45"
(-11.43mm)
69th Driest
Driest since:
1977
59th Wettest
Wettest since:
1983
Nov 2001–Apr 2003
18-Month
28.52"
(724.41mm)
31.22"
(792.99mm)
-2.70"
(-68.58mm)
44th Driest
Driest since:
1977
83rd Wettest
Wettest since:
1983
May 2001–Apr 2003
24-Month
30.27"
(768.86mm)
34.90"
(886.46mm)
-4.63"
(-117.60mm)
34th Driest
Driest since:
1977
93rd Wettest
Wettest since:
1983
May 2000–Apr 2003
36-Month
44.53"
(1,131.06mm)
52.30"
(1,328.42mm)
-7.77"
(-197.36mm)
28th Driest
Driest since:
2022
98th Wettest
Wettest since:
1984
May 1999–Apr 2003
48-Month
60.35"
(1,532.89mm)
69.56"
(1,766.82mm)
-9.21"
(-233.93mm)
22nd Driest
Driest since:
2015
103rd Wettest
Wettest since:
1998
May 1998–Apr 2003
60-Month
80.38"
(2,041.65mm)
86.83"
(2,205.48mm)
-6.45"
(-163.83mm)
41st Driest
Driest since:
1933
83rd Wettest
Wettest since:
1999

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