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.

Southwest Climate Region

Precipitation Rankings, April 2022

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 2022
1-Month
0.32"
(8.13mm)
1.06"
(26.92mm)
-0.74"
(-18.79mm)
2nd Driest
Driest since:
1989
127th Wettest
Wettest since:
1900
Mar–Apr 2022
2-Month
1.15"
(29.21mm)
2.21"
(56.13mm)
-1.06"
(-26.92mm)
10th Driest
Driest since:
1972
119th Wettest
Wettest since:
1905
Ties: 1950
Feb–Apr 2022
3-Month
1.67"
(42.42mm)
3.21"
(81.53mm)
-1.54"
(-39.11mm)
4th Driest
Driest since:
1972
125th Wettest
Wettest since:
1905
Jan–Apr 2022
4-Month
2.11"
(53.59mm)
4.20"
(106.68mm)
-2.09"
(-53.09mm)
3rd Driest
Driest since:
1972
126th Wettest
Wettest since:
1905
Dec 2021–Apr 2022
5-Month
3.60"
(91.44mm)
5.21"
(132.33mm)
-1.61"
(-40.89mm)
16th Driest
Driest since:
2002
112th Wettest
Wettest since:
1905
Nov 2021–Apr 2022
6-Month
3.78"
(96.01mm)
6.10"
(154.94mm)
-2.32"
(-58.93mm)
8th Driest
Driest since:
1904
120th Wettest
Wettest since:
1941
Oct 2021–Apr 2022
7-Month
4.86"
(123.44mm)
7.23"
(183.64mm)
-2.37"
(-60.20mm)
10th Driest
Driest since:
1904
118th Wettest
Wettest since:
1941
Sep 2021–Apr 2022
8-Month
6.05"
(153.67mm)
8.60"
(218.44mm)
-2.55"
(-64.77mm)
8th Driest
Driest since:
2002
120th Wettest
Wettest since:
1941
Ties: 1899
Aug 2021–Apr 2022
9-Month
8.08"
(205.23mm)
10.61"
(269.49mm)
-2.53"
(-64.26mm)
15th Driest
Driest since:
2021
113th Wettest
Wettest since:
1905
Ties: 1963
Jul 2021–Apr 2022
10-Month
10.82"
(274.83mm)
12.48"
(316.99mm)
-1.66"
(-42.16mm)
34th Driest
Driest since:
2021
94th Wettest
Wettest since:
1905
Jun 2021–Apr 2022
11-Month
11.71"
(297.43mm)
13.41"
(340.61mm)
-1.70"
(-43.18mm)
36th Driest
Driest since:
2021
92nd Wettest
Wettest since:
1905
May 2021–Apr 2022
12-Month
12.83"
(325.88mm)
14.53"
(369.06mm)
-1.70"
(-43.18mm)
39th Driest
Driest since:
2021
89th Wettest
Wettest since:
1942
Nov 2020–Apr 2022
18-Month
16.99"
(431.55mm)
20.64"
(524.26mm)
-3.65"
(-92.71mm)
19th Driest
Driest since:
2021
108th Wettest
Wettest since:
1942
May 2020–Apr 2022
24-Month
20.91"
(531.11mm)
29.05"
(737.87mm)
-8.14"
(-206.76mm)
1st Driest
Driest since:
2022
126th Wettest
Wettest since:
1942
May 2019–Apr 2022
36-Month
34.54"
(877.32mm)
43.55"
(1,106.17mm)
-9.01"
(-228.85mm)
3rd Driest
Driest since:
1904
123rd Wettest
Wettest since:
1907
May 2018–Apr 2022
48-Month
50.36"
(1,279.14mm)
58.02"
(1,473.71mm)
-7.66"
(-194.57mm)
12th Driest
Driest since:
1904
113th Wettest
Wettest since:
1986
May 2017–Apr 2022
60-Month
61.91"
(1,572.51mm)
72.49"
(1,841.25mm)
-10.58"
(-268.74mm)
4th Driest
Driest since:
1957
120th Wettest
Wettest since:
1987

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