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 1987

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 1987
1-Month
0.54"
(13.72mm)
1.06"
(26.92mm)
-0.52"
(-13.20mm)
16th Driest
Driest since:
1989
113th Wettest
Wettest since:
1900
Ties: 1992
Mar–Apr 1987
2-Month
1.61"
(40.89mm)
2.21"
(56.13mm)
-0.60"
(-15.24mm)
35th Driest
Driest since:
1972
94th Wettest
Wettest since:
1905
Feb–Apr 1987
3-Month
3.09"
(78.49mm)
3.21"
(81.53mm)
-0.12"
(-3.04mm)
69th Driest
Driest since:
1972
60th Wettest
Wettest since:
1905
Ties: 1979
Jan–Apr 1987
4-Month
4.10"
(104.14mm)
4.20"
(106.68mm)
-0.10"
(-2.54mm)
70th Driest
Driest since:
1972
59th Wettest
Wettest since:
1905
Ties: 1908
Dec 1986–Apr 1987
5-Month
5.15"
(130.81mm)
5.21"
(132.33mm)
-0.06"
(-1.52mm)
76th Driest
Driest since:
2002
52nd Wettest
Wettest since:
1905
Nov 1986–Apr 1987
6-Month
6.77"
(171.96mm)
6.10"
(154.94mm)
0.67"
(17.02mm)
93rd Driest
Driest since:
1904
35th Wettest
Wettest since:
1941
Ties: 1968
Oct 1986–Apr 1987
7-Month
8.55"
(217.17mm)
7.23"
(183.64mm)
1.32"
(33.53mm)
103rd Driest
Driest since:
1904
25th Wettest
Wettest since:
1941
Sep 1986–Apr 1987
8-Month
10.35"
(262.89mm)
8.60"
(218.44mm)
1.75"
(44.45mm)
109th Driest
Driest since:
2002
19th Wettest
Wettest since:
1941
Ties: 1992
Aug 1986–Apr 1987
9-Month
12.61"
(320.29mm)
10.61"
(269.49mm)
2.00"
(50.80mm)
108th Driest
Driest since:
2021
20th Wettest
Wettest since:
1905
Jul 1986–Apr 1987
10-Month
14.72"
(373.89mm)
12.48"
(316.99mm)
2.24"
(56.90mm)
110th Driest
Driest since:
2021
18th Wettest
Wettest since:
1905
Jun 1986–Apr 1987
11-Month
16.34"
(415.04mm)
13.41"
(340.61mm)
2.93"
(74.43mm)
116th Driest
Driest since:
2021
12th Wettest
Wettest since:
1905
May 1986–Apr 1987
12-Month
17.45"
(443.23mm)
14.53"
(369.06mm)
2.92"
(74.17mm)
114th Driest
Driest since:
2021
14th Wettest
Wettest since:
1942
Nov 1985–Apr 1987
18-Month
23.97"
(608.84mm)
20.64"
(524.26mm)
3.33"
(84.58mm)
110th Driest
Driest since:
2021
17th Wettest
Wettest since:
1942
May 1985–Apr 1987
24-Month
33.35"
(847.09mm)
29.05"
(737.87mm)
4.30"
(109.22mm)
115th Driest
Driest since:
2022
12th Wettest
Wettest since:
1942
May 1984–Apr 1987
36-Month
52.63"
(1,336.80mm)
43.55"
(1,106.17mm)
9.08"
(230.63mm)
123rd Driest
Driest since:
1904
3rd Wettest
Wettest since:
1907
May 1983–Apr 1987
48-Month
68.78"
(1,747.01mm)
58.02"
(1,473.71mm)
10.76"
(273.30mm)
121st Driest
Driest since:
1904
4th Wettest
Wettest since:
1986
May 1982–Apr 1987
60-Month
87.33"
(2,218.18mm)
72.49"
(1,841.25mm)
14.84"
(376.93mm)
123rd Driest
Driest since:
1957
1st Wettest
Wettest to Date
1987

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