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 2015

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 2015
1-Month
0.91"
(23.11mm)
1.33"
(33.78mm)
-0.42"
(-10.67mm)
45th Driest
Driest since:
1909
84th Wettest
Wettest since:
1935
Mar–Apr 2015
2-Month
1.53"
(38.86mm)
3.67"
(93.22mm)
-2.14"
(-54.36mm)
8th Driest
Driest since:
2008
121st Wettest
Wettest since:
1983
Feb–Apr 2015
3-Month
3.45"
(87.63mm)
6.39"
(162.31mm)
-2.94"
(-74.68mm)
14th Driest
Driest since:
1997
115th Wettest
Wettest since:
1983
Jan–Apr 2015
4-Month
4.04"
(102.62mm)
9.37"
(238.00mm)
-5.33"
(-135.38mm)
4th Driest
Driest since:
2022
125th Wettest
Wettest since:
1995
Dec 2014–Apr 2015
5-Month
8.29"
(210.57mm)
11.92"
(302.77mm)
-3.63"
(-92.20mm)
21st Driest
Driest since:
1977
107th Wettest
Wettest since:
1978
Nov 2014–Apr 2015
6-Month
9.67"
(245.62mm)
13.79"
(350.27mm)
-4.12"
(-104.65mm)
20th Driest
Driest since:
1977
108th Wettest
Wettest since:
1983
Oct 2014–Apr 2015
7-Month
10.34"
(262.64mm)
14.82"
(376.43mm)
-4.48"
(-113.79mm)
18th Driest
Driest since:
1977
110th Wettest
Wettest since:
1983
Sep 2014–Apr 2015
8-Month
11.25"
(285.75mm)
15.31"
(388.87mm)
-4.06"
(-103.12mm)
24th Driest
Driest since:
1977
104th Wettest
Wettest since:
1983
Aug 2014–Apr 2015
9-Month
12.13"
(308.10mm)
15.70"
(398.78mm)
-3.57"
(-90.68mm)
35th Driest
Driest since:
1977
93rd Wettest
Wettest since:
1983
Jul 2014–Apr 2015
10-Month
12.58"
(319.53mm)
16.03"
(407.16mm)
-3.45"
(-87.63mm)
37th Driest
Driest since:
2021
91st Wettest
Wettest since:
1983
Jun 2014–Apr 2015
11-Month
12.66"
(321.56mm)
16.52"
(419.61mm)
-3.86"
(-98.05mm)
32nd Driest
Driest since:
2021
96th Wettest
Wettest since:
1983
May 2014–Apr 2015
12-Month
13.20"
(335.28mm)
17.44"
(442.98mm)
-4.24"
(-107.70mm)
24th Driest
Driest since:
1977
104th Wettest
Wettest since:
1983
Nov 2013–Apr 2015
18-Month
21.24"
(539.50mm)
31.22"
(792.99mm)
-9.98"
(-253.49mm)
5th Driest
Driest since:
1977
122nd Wettest
Wettest since:
1983
May 2013–Apr 2015
24-Month
24.50"
(622.30mm)
34.90"
(886.46mm)
-10.40"
(-264.16mm)
6th Driest
Driest since:
1977
121st Wettest
Wettest since:
1983
May 2012–Apr 2015
36-Month
36.93"
(938.02mm)
52.30"
(1,328.42mm)
-15.37"
(-390.40mm)
3rd Driest
Driest since:
2022
123rd Wettest
Wettest since:
1984
May 2011–Apr 2015
48-Month
50.88"
(1,292.35mm)
69.56"
(1,766.82mm)
-18.68"
(-474.47mm)
1st Driest
Driest since:
2015
124th Wettest
Wettest since:
1998
May 2010–Apr 2015
60-Month
72.14"
(1,832.36mm)
86.83"
(2,205.48mm)
-14.69"
(-373.12mm)
9th Driest
Driest since:
1933
115th Wettest
Wettest since:
1999

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