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 1906

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 1906
1-Month
1.64"
(41.66mm)
1.33"
(33.78mm)
0.31"
(7.88mm)
95th Driest
Driest since:
1909
34th Wettest
Wettest since:
1935
Ties: 1955
Mar–Apr 1906
2-Month
7.04"
(178.82mm)
3.67"
(93.22mm)
3.37"
(85.60mm)
122nd Driest
Driest since:
2008
7th Wettest
Wettest to Date
1983
Feb–Apr 1906
3-Month
9.89"
(251.21mm)
6.39"
(162.31mm)
3.50"
(88.90mm)
119th Driest
Driest since:
1997
10th Wettest
Wettest since:
1983
Jan–Apr 1906
4-Month
14.47"
(367.54mm)
9.37"
(238.00mm)
5.10"
(129.54mm)
117th Driest
Driest since:
2022
12th Wettest
Wettest to Date
1995
Dec 1905–Apr 1906
5-Month
15.65"
(397.51mm)
11.92"
(302.77mm)
3.73"
(94.74mm)
108th Driest
Driest since:
1977
20th Wettest
Wettest to Date
1978
Nov 1905–Apr 1906
6-Month
17.42"
(442.47mm)
13.79"
(350.27mm)
3.63"
(92.20mm)
105th Driest
Driest since:
1977
23rd Wettest
Wettest since:
1983
Ties: 1909
Oct 1905–Apr 1906
7-Month
17.57"
(446.28mm)
14.82"
(376.43mm)
2.75"
(69.85mm)
96th Driest
Driest since:
1977
32nd Wettest
Wettest since:
1983
Ties: 1997
Sep 1905–Apr 1906
8-Month
18.08"
(459.23mm)
15.31"
(388.87mm)
2.77"
(70.36mm)
98th Driest
Driest since:
1977
30th Wettest
Wettest since:
1983
Aug 1905–Apr 1906
9-Month
18.39"
(467.11mm)
15.70"
(398.78mm)
2.69"
(68.33mm)
97th Driest
Driest since:
1977
31st Wettest
Wettest since:
1983
Jul 1905–Apr 1906
10-Month
18.43"
(468.12mm)
16.03"
(407.16mm)
2.40"
(60.96mm)
96th Driest
Driest since:
2021
32nd Wettest
Wettest since:
1983
Jun 1905–Apr 1906
11-Month
18.57"
(471.68mm)
16.52"
(419.61mm)
2.05"
(52.07mm)
94th Driest
Driest since:
2021
34th Wettest
Wettest since:
1983
Ties: 1915, 1943
May 1905–Apr 1906
12-Month
20.18"
(512.57mm)
17.44"
(442.98mm)
2.74"
(69.59mm)
100th Driest
Driest since:
1977
28th Wettest
Wettest since:
1983
Nov 1904–Apr 1906
18-Month
33.36"
(847.34mm)
31.22"
(792.99mm)
2.14"
(54.35mm)
89th Driest
Driest since:
1977
38th Wettest
Wettest since:
1983
May 1904–Apr 1906
24-Month
38.48"
(977.39mm)
34.90"
(886.46mm)
3.58"
(90.93mm)
98th Driest
Driest since:
1977
29th Wettest
Wettest since:
1983
May 1903–Apr 1906
36-Month
58.06"
(1,474.72mm)
52.30"
(1,328.42mm)
5.76"
(146.30mm)
97th Driest
Driest since:
2022
29th Wettest
Wettest to Date
1984
May 1902–Apr 1906
48-Month
75.08"
(1,907.03mm)
69.56"
(1,766.82mm)
5.52"
(140.21mm)
96th Driest
Driest since:
2015
29th Wettest
Wettest to Date
1998
May 1901–Apr 1906
60-Month
92.65"
(2,353.31mm)
86.83"
(2,205.48mm)
5.82"
(147.83mm)
95th Driest
Driest since:
1933
29th Wettest
Wettest to Date
1999

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