National Rankings

National Data Info
Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Contiguous U.S.

Precipitation Rankings, April 1973

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 1973
1-Month
3.33"
(84.58mm)
2.52"
(64.01mm)
0.81"
(20.57mm)
122nd Driest
Driest since:
1987
7th Wettest
Wettest since:
1957
Mar–Apr 1973
2-Month
7.33"
(186.18mm)
5.03"
(127.76mm)
2.30"
(58.42mm)
128th Driest
Driest since:
1910
1st Wettest
Wettest to Date
1973
Feb–Apr 1973
3-Month
9.29"
(235.97mm)
7.16"
(181.86mm)
2.13"
(54.11mm)
127th Driest
Driest since:
1910
2nd Wettest
Wettest to Date
1983
Jan–Apr 1973
4-Month
11.77"
(298.96mm)
9.47"
(240.54mm)
2.30"
(58.42mm)
126th Driest
Driest since:
1910
3rd Wettest
Wettest to Date
1998
Dec 1972–Apr 1973
5-Month
14.79"
(375.67mm)
11.82"
(300.23mm)
2.97"
(75.44mm)
126th Driest
Driest since:
1931
2nd Wettest
Wettest to Date
1983
Ties: 1998
Nov 1972–Apr 1973
6-Month
17.84"
(453.14mm)
14.05"
(356.87mm)
3.79"
(96.27mm)
126th Driest
Driest since:
1977
2nd Wettest
Wettest to Date
1983
Oct 1972–Apr 1973
7-Month
20.59"
(522.99mm)
16.22"
(411.99mm)
4.37"
(111.00mm)
125th Driest
Driest since:
1981
3rd Wettest
Wettest to Date
1983
Sep 1972–Apr 1973
8-Month
23.33"
(592.58mm)
18.71"
(475.23mm)
4.62"
(117.35mm)
126th Driest
Driest since:
1918
2nd Wettest
Wettest to Date
2019
Aug 1972–Apr 1973
9-Month
25.97"
(659.64mm)
21.33"
(541.78mm)
4.64"
(117.86mm)
126th Driest
Driest since:
1918
2nd Wettest
Wettest to Date
2019
Jul 1972–Apr 1973
10-Month
28.90"
(734.06mm)
24.12"
(612.65mm)
4.78"
(121.41mm)
126th Driest
Driest since:
1931
2nd Wettest
Wettest to Date
2019
Jun 1972–Apr 1973
11-Month
32.00"
(812.80mm)
27.04"
(686.82mm)
4.96"
(125.98mm)
126th Driest
Driest since:
1931
2nd Wettest
Wettest to Date
2019
Ties: 1983
May 1972–Apr 1973
12-Month
34.95"
(887.73mm)
29.95"
(760.73mm)
5.00"
(127.00mm)
124th Driest
Driest since:
1918
4th Wettest
Wettest to Date
2019
Nov 1971–Apr 1973
18-Month
48.70"
(1,236.98mm)
44.02"
(1,118.11mm)
4.68"
(118.87mm)
117th Driest
Driest since:
1931
10th Wettest
Wettest to Date
2020
May 1971–Apr 1973
24-Month
65.46"
(1,662.68mm)
59.92"
(1,521.97mm)
5.54"
(140.71mm)
117th Driest
Driest since:
1955
10th Wettest
Wettest to Date
2020
May 1970–Apr 1973
36-Month
94.32"
(2,395.73mm)
89.88"
(2,282.95mm)
4.44"
(112.78mm)
105th Driest
Driest since:
1955
21st Wettest
Wettest since:
2020
May 1969–Apr 1973
48-Month
124.40"
(3,159.76mm)
119.77"
(3,042.16mm)
4.63"
(117.60mm)
99th Driest
Driest since:
1956
26th Wettest
Wettest since:
2019
May 1968–Apr 1973
60-Month
156.25"
(3,968.75mm)
149.63"
(3,800.60mm)
6.62"
(168.15mm)
102nd Driest
Driest since:
1957
22nd Wettest
Wettest to Date
2020

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