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 1988

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1988
1-Month
0.90"
(22.86mm)
0.92"
(23.37mm)
-0.02"
(-0.51mm)
75th Driest
Driest since:
1924
54th Wettest
Wettest since:
1998
Ties: 1938, 1939
Apr–May 1988
2-Month
3.13"
(79.50mm)
2.26"
(57.40mm)
0.87"
(22.10mm)
102nd Driest
Driest since:
1909
27th Wettest
Wettest since:
1896
Mar–May 1988
3-Month
3.62"
(91.95mm)
4.59"
(116.59mm)
-0.97"
(-24.64mm)
45th Driest
Driest since:
2008
84th Wettest
Wettest since:
1995
Feb–May 1988
4-Month
4.21"
(106.93mm)
7.31"
(185.67mm)
-3.10"
(-78.74mm)
15th Driest
Driest since:
1997
114th Wettest
Wettest since:
1998
Jan–May 1988
5-Month
7.05"
(179.07mm)
10.29"
(261.37mm)
-3.24"
(-82.30mm)
26th Driest
Driest since:
2022
103rd Wettest
Wettest since:
1998
Dec 1987–May 1988
6-Month
10.41"
(264.41mm)
12.84"
(326.14mm)
-2.43"
(-61.73mm)
39th Driest
Driest since:
1924
89th Wettest
Wettest since:
1995
Nov 1987–May 1988
7-Month
12.56"
(319.02mm)
14.71"
(373.63mm)
-2.15"
(-54.61mm)
52nd Driest
Driest since:
1977
76th Wettest
Wettest since:
1995
Oct 1987–May 1988
8-Month
13.87"
(352.30mm)
15.74"
(399.80mm)
-1.87"
(-47.50mm)
55th Driest
Driest since:
1977
73rd Wettest
Wettest since:
1983
Sep 1987–May 1988
9-Month
13.94"
(354.08mm)
16.23"
(412.24mm)
-2.29"
(-58.16mm)
51st Driest
Driest since:
2021
77th Wettest
Wettest since:
1983
Aug 1987–May 1988
10-Month
14.06"
(357.12mm)
16.62"
(422.15mm)
-2.56"
(-65.03mm)
48th Driest
Driest since:
2021
80th Wettest
Wettest since:
1983
Jul 1987–May 1988
11-Month
14.48"
(367.79mm)
16.95"
(430.53mm)
-2.47"
(-62.74mm)
50th Driest
Driest since:
2021
78th Wettest
Wettest since:
1983
Jun 1987–May 1988
12-Month
14.84"
(376.94mm)
17.44"
(442.98mm)
-2.60"
(-66.04mm)
46th Driest
Driest since:
2021
82nd Wettest
Wettest since:
1983
Dec 1986–May 1988
18-Month
24.60"
(624.84mm)
30.25"
(768.35mm)
-5.65"
(-143.51mm)
27th Driest
Driest since:
1977
100th Wettest
Wettest since:
1983
Jun 1986–May 1988
24-Month
27.72"
(704.09mm)
34.89"
(886.21mm)
-7.17"
(-182.12mm)
23rd Driest
Driest since:
2022
104th Wettest
Wettest since:
1983
Jun 1985–May 1988
36-Month
49.00"
(1,244.60mm)
52.30"
(1,328.42mm)
-3.30"
(-83.82mm)
52nd Driest
Driest since:
2022
74th Wettest
Wettest since:
1984
Jun 1984–May 1988
48-Month
64.79"
(1,645.67mm)
69.56"
(1,766.82mm)
-4.77"
(-121.15mm)
43rd Driest
Driest since:
2015
82nd Wettest
Wettest since:
1998
Ties: 1957
Jun 1983–May 1988
60-Month
83.91"
(2,131.31mm)
86.83"
(2,205.48mm)
-2.92"
(-74.17mm)
60th Driest
Driest since:
1933
64th Wettest
Wettest since:
1999

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