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 2002

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 2002
1-Month
0.88"
(22.35mm)
1.33"
(33.78mm)
-0.45"
(-11.43mm)
41st Driest
Driest since:
1909
88th Wettest
Wettest since:
1935
Ties: 1979, 1981
Mar–Apr 2002
2-Month
2.22"
(56.39mm)
3.67"
(93.22mm)
-1.45"
(-36.83mm)
23rd Driest
Driest since:
2008
106th Wettest
Wettest since:
1983
Feb–Apr 2002
3-Month
3.31"
(84.07mm)
6.39"
(162.31mm)
-3.08"
(-78.24mm)
12th Driest
Driest since:
1997
117th Wettest
Wettest since:
1983
Ties: 1988
Jan–Apr 2002
4-Month
4.89"
(124.21mm)
9.37"
(238.00mm)
-4.48"
(-113.79mm)
12th Driest
Driest since:
2022
117th Wettest
Wettest since:
1995
Dec 2001–Apr 2002
5-Month
8.54"
(216.92mm)
11.92"
(302.77mm)
-3.38"
(-85.85mm)
28th Driest
Driest since:
1977
100th Wettest
Wettest since:
1978
Ties: 1934
Nov 2001–Apr 2002
6-Month
11.53"
(292.86mm)
13.79"
(350.27mm)
-2.26"
(-57.41mm)
49th Driest
Driest since:
1977
79th Wettest
Wettest since:
1983
Oct 2001–Apr 2002
7-Month
12.02"
(305.31mm)
14.82"
(376.43mm)
-2.80"
(-71.12mm)
44th Driest
Driest since:
1977
84th Wettest
Wettest since:
1983
Ties: 2001
Sep 2001–Apr 2002
8-Month
12.30"
(312.42mm)
15.31"
(388.87mm)
-3.01"
(-76.45mm)
42nd Driest
Driest since:
1977
86th Wettest
Wettest since:
1983
Aug 2001–Apr 2002
9-Month
12.44"
(315.98mm)
15.70"
(398.78mm)
-3.26"
(-82.80mm)
40th Driest
Driest since:
1977
88th Wettest
Wettest since:
1983
Ties: 1968
Jul 2001–Apr 2002
10-Month
12.94"
(328.68mm)
16.03"
(407.16mm)
-3.09"
(-78.48mm)
41st Driest
Driest since:
2021
87th Wettest
Wettest since:
1983
Ties: 1968
Jun 2001–Apr 2002
11-Month
13.13"
(333.50mm)
16.52"
(419.61mm)
-3.39"
(-86.11mm)
37th Driest
Driest since:
2021
91st Wettest
Wettest since:
1983
Ties: 1947
May 2001–Apr 2002
12-Month
13.28"
(337.31mm)
17.44"
(442.98mm)
-4.16"
(-105.67mm)
25th Driest
Driest since:
1977
103rd Wettest
Wettest since:
1983
Nov 2000–Apr 2002
18-Month
23.33"
(592.58mm)
31.22"
(792.99mm)
-7.89"
(-200.41mm)
18th Driest
Driest since:
1977
109th Wettest
Wettest since:
1983
May 2000–Apr 2002
24-Month
27.54"
(699.52mm)
34.90"
(886.46mm)
-7.36"
(-186.94mm)
22nd Driest
Driest since:
1977
105th Wettest
Wettest since:
1983
May 1999–Apr 2002
36-Month
43.36"
(1,101.34mm)
52.30"
(1,328.42mm)
-8.94"
(-227.08mm)
19th Driest
Driest since:
2022
107th Wettest
Wettest since:
1984
May 1998–Apr 2002
48-Month
63.39"
(1,610.11mm)
69.56"
(1,766.82mm)
-6.17"
(-156.71mm)
37th Driest
Driest since:
2015
88th Wettest
Wettest since:
1998
May 1997–Apr 2002
60-Month
89.72"
(2,278.89mm)
86.83"
(2,205.48mm)
2.89"
(73.41mm)
84th Driest
Driest since:
1933
40th Wettest
Wettest since:
1999

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