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 1979

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1979
1-Month
0.79"
(20.07mm)
0.92"
(23.37mm)
-0.13"
(-3.30mm)
68th Driest
Driest since:
1924
61st Wettest
Wettest since:
1998
Ties: 1907, 1960
Apr–May 1979
2-Month
1.67"
(42.42mm)
2.26"
(57.40mm)
-0.59"
(-14.98mm)
44th Driest
Driest since:
1909
85th Wettest
Wettest since:
1896
Ties: 2001
Mar–May 1979
3-Month
4.29"
(108.97mm)
4.59"
(116.59mm)
-0.30"
(-7.62mm)
66th Driest
Driest since:
2008
63rd Wettest
Wettest since:
1995
Feb–May 1979
4-Month
7.62"
(193.55mm)
7.31"
(185.67mm)
0.31"
(7.88mm)
80th Driest
Driest since:
1997
49th Wettest
Wettest since:
1998
Jan–May 1979
5-Month
11.24"
(285.50mm)
10.29"
(261.37mm)
0.95"
(24.13mm)
86th Driest
Driest since:
2022
43rd Wettest
Wettest since:
1998
Dec 1978–May 1979
6-Month
12.52"
(318.01mm)
12.84"
(326.14mm)
-0.32"
(-8.13mm)
70th Driest
Driest since:
1924
58th Wettest
Wettest since:
1995
Ties: 1962
Nov 1978–May 1979
7-Month
14.20"
(360.68mm)
14.71"
(373.63mm)
-0.51"
(-12.95mm)
68th Driest
Driest since:
1977
60th Wettest
Wettest since:
1995
Oct 1978–May 1979
8-Month
14.53"
(369.06mm)
15.74"
(399.80mm)
-1.21"
(-30.74mm)
60th Driest
Driest since:
1977
68th Wettest
Wettest since:
1983
Sep 1978–May 1979
9-Month
16.00"
(406.40mm)
16.23"
(412.24mm)
-0.23"
(-5.84mm)
69th Driest
Driest since:
2021
59th Wettest
Wettest since:
1983
Aug 1978–May 1979
10-Month
16.23"
(412.24mm)
16.62"
(422.15mm)
-0.39"
(-9.91mm)
66th Driest
Driest since:
2021
62nd Wettest
Wettest since:
1983
Jul 1978–May 1979
11-Month
16.40"
(416.56mm)
16.95"
(430.53mm)
-0.55"
(-13.97mm)
65th Driest
Driest since:
2021
63rd Wettest
Wettest since:
1983
Ties: 1900
Jun 1978–May 1979
12-Month
16.54"
(420.12mm)
17.44"
(442.98mm)
-0.90"
(-22.86mm)
63rd Driest
Driest since:
2021
65th Wettest
Wettest since:
1983
Dec 1977–May 1979
18-Month
38.08"
(967.23mm)
30.25"
(768.35mm)
7.83"
(198.88mm)
115th Driest
Driest since:
1977
12th Wettest
Wettest since:
1983
Jun 1977–May 1979
24-Month
42.59"
(1,081.79mm)
34.89"
(886.21mm)
7.70"
(195.58mm)
114th Driest
Driest since:
2022
13th Wettest
Wettest since:
1983
Jun 1976–May 1979
36-Month
53.17"
(1,350.52mm)
52.30"
(1,328.42mm)
0.87"
(22.10mm)
77th Driest
Driest since:
2022
49th Wettest
Wettest since:
1984
Jun 1975–May 1979
48-Month
64.81"
(1,646.17mm)
69.56"
(1,766.82mm)
-4.75"
(-120.65mm)
46th Driest
Driest since:
2015
79th Wettest
Wettest since:
1998
Jun 1974–May 1979
60-Month
81.85"
(2,078.99mm)
86.83"
(2,205.48mm)
-4.98"
(-126.49mm)
47th Driest
Driest since:
1933
77th Wettest
Wettest since:
1999

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