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, May 1989

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1989
1-Month
0.93"
(23.62mm)
0.92"
(23.37mm)
0.01"
(0.25mm)
76th Driest
Driest since:
1924
53rd Wettest
Wettest since:
1998
Apr–May 1989
2-Month
1.52"
(38.61mm)
2.26"
(57.40mm)
-0.74"
(-18.79mm)
30th Driest
Driest since:
1909
99th Wettest
Wettest since:
1896
Mar–May 1989
3-Month
5.05"
(128.27mm)
4.59"
(116.59mm)
0.46"
(11.68mm)
86th Driest
Driest since:
2008
43rd Wettest
Wettest since:
1995
Feb–May 1989
4-Month
6.27"
(159.26mm)
7.31"
(185.67mm)
-1.04"
(-26.41mm)
51st Driest
Driest since:
1997
78th Wettest
Wettest since:
1998
Ties: 1895, 1903
Jan–May 1989
5-Month
7.43"
(188.72mm)
10.29"
(261.37mm)
-2.86"
(-72.65mm)
29th Driest
Driest since:
2022
100th Wettest
Wettest since:
1998
Dec 1988–May 1989
6-Month
9.60"
(243.84mm)
12.84"
(326.14mm)
-3.24"
(-82.30mm)
30th Driest
Driest since:
1924
98th Wettest
Wettest since:
1995
Nov 1988–May 1989
7-Month
12.72"
(323.09mm)
14.71"
(373.63mm)
-1.99"
(-50.54mm)
55th Driest
Driest since:
1977
73rd Wettest
Wettest since:
1995
Oct 1988–May 1989
8-Month
12.85"
(326.39mm)
15.74"
(399.80mm)
-2.89"
(-73.41mm)
43rd Driest
Driest since:
1977
85th Wettest
Wettest since:
1983
Sep 1988–May 1989
9-Month
13.06"
(331.72mm)
16.23"
(412.24mm)
-3.17"
(-80.52mm)
41st Driest
Driest since:
2021
87th Wettest
Wettest since:
1983
Aug 1988–May 1989
10-Month
13.60"
(345.44mm)
16.62"
(422.15mm)
-3.02"
(-76.71mm)
41st Driest
Driest since:
2021
87th Wettest
Wettest since:
1983
Jul 1988–May 1989
11-Month
13.75"
(349.25mm)
16.95"
(430.53mm)
-3.20"
(-81.28mm)
38th Driest
Driest since:
2021
90th Wettest
Wettest since:
1983
Ties: 1949
Jun 1988–May 1989
12-Month
14.29"
(362.97mm)
17.44"
(442.98mm)
-3.15"
(-80.01mm)
40th Driest
Driest since:
2021
88th Wettest
Wettest since:
1983
Dec 1987–May 1989
18-Month
24.70"
(627.38mm)
30.25"
(768.35mm)
-5.55"
(-140.97mm)
29th Driest
Driest since:
1977
98th Wettest
Wettest since:
1983
Jun 1987–May 1989
24-Month
29.13"
(739.90mm)
34.89"
(886.21mm)
-5.76"
(-146.31mm)
29th Driest
Driest since:
2022
98th Wettest
Wettest since:
1983
Jun 1986–May 1989
36-Month
42.01"
(1,067.05mm)
52.30"
(1,328.42mm)
-10.29"
(-261.37mm)
11th Driest
Driest since:
2022
115th Wettest
Wettest since:
1984
Jun 1985–May 1989
48-Month
63.29"
(1,607.57mm)
69.56"
(1,766.82mm)
-6.27"
(-159.25mm)
38th Driest
Driest since:
2015
87th Wettest
Wettest since:
1998
Jun 1984–May 1989
60-Month
79.08"
(2,008.63mm)
86.83"
(2,205.48mm)
-7.75"
(-196.85mm)
36th Driest
Driest since:
1933
88th Wettest
Wettest since:
1999

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