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.

Northwest Climate Region

Precipitation Rankings, April 1974

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 1974
1-Month
2.56"
(65.02mm)
2.36"
(59.94mm)
0.20"
(5.08mm)
76th Driest
Driest since:
1977
53rd Wettest
Wettest since:
1937
Ties: 1904
Mar–Apr 1974
2-Month
7.93"
(201.42mm)
5.62"
(142.75mm)
2.31"
(58.67mm)
118th Driest
Driest since:
1924
11th Wettest
Wettest since:
1904
Feb–Apr 1974
3-Month
11.81"
(299.97mm)
9.23"
(234.44mm)
2.58"
(65.53mm)
112th Driest
Driest since:
1911
17th Wettest
Wettest since:
1904
Jan–Apr 1974
4-Month
18.49"
(469.65mm)
13.75"
(349.25mm)
4.74"
(120.40mm)
126th Driest
Driest since:
1977
3rd Wettest
Wettest since:
1904
Dec 1973–Apr 1974
5-Month
25.30"
(642.62mm)
18.40"
(467.36mm)
6.90"
(175.26mm)
126th Driest
Driest since:
1977
2nd Wettest
Wettest to Date
1997
Nov 1973–Apr 1974
6-Month
34.27"
(870.46mm)
22.75"
(577.85mm)
11.52"
(292.61mm)
127th Driest
Driest since:
1977
1st Wettest
Wettest to Date
1974
Oct 1973–Apr 1974
7-Month
36.83"
(935.48mm)
25.31"
(642.87mm)
11.52"
(292.61mm)
127th Driest
Driest since:
1977
1st Wettest
Wettest to Date
1974
Sep 1973–Apr 1974
8-Month
39.05"
(991.87mm)
26.73"
(678.94mm)
12.32"
(312.93mm)
127th Driest
Driest since:
1977
1st Wettest
Wettest to Date
1974
Aug 1973–Apr 1974
9-Month
39.47"
(1,002.54mm)
27.53"
(699.26mm)
11.94"
(303.28mm)
127th Driest
Driest since:
1977
1st Wettest
Wettest to Date
1974
Jul 1973–Apr 1974
10-Month
39.89"
(1,013.21mm)
28.26"
(717.80mm)
11.63"
(295.41mm)
127th Driest
Driest since:
1977
1st Wettest
Wettest to Date
1974
Jun 1973–Apr 1974
11-Month
41.19"
(1,046.23mm)
29.99"
(761.75mm)
11.20"
(284.48mm)
127th Driest
Driest since:
1977
1st Wettest
Wettest to Date
1974
May 1973–Apr 1974
12-Month
42.77"
(1,086.36mm)
32.13"
(816.10mm)
10.64"
(270.26mm)
126th Driest
Driest since:
1977
2nd Wettest
Wettest to Date
1997
Nov 1972–Apr 1974
18-Month
60.32"
(1,532.13mm)
54.88"
(1,393.95mm)
5.44"
(138.18mm)
107th Driest
Driest since:
1930
20th Wettest
Wettest since:
1997
May 1972–Apr 1974
24-Month
68.67"
(1,744.22mm)
64.29"
(1,632.97mm)
4.38"
(111.25mm)
94th Driest
Driest since:
1930
33rd Wettest
Wettest since:
1997
May 1971–Apr 1974
36-Month
107.61"
(2,733.29mm)
96.34"
(2,447.04mm)
11.27"
(286.25mm)
116th Driest
Driest since:
1931
10th Wettest
Wettest since:
1997
May 1970–Apr 1974
48-Month
144.64"
(3,673.86mm)
128.37"
(3,260.60mm)
16.27"
(413.26mm)
117th Driest
Driest since:
1932
8th Wettest
Wettest since:
1999
May 1969–Apr 1974
60-Month
176.85"
(4,491.99mm)
160.35"
(4,072.89mm)
16.50"
(419.10mm)
116th Driest
Driest since:
1933
8th Wettest
Wettest to Date
1999

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