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 2007

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 2007
1-Month
1.12"
(28.45mm)
1.33"
(33.78mm)
-0.21"
(-5.33mm)
59th Driest
Driest since:
1909
70th Wettest
Wettest since:
1935
Ties: 1971, 1990
Mar–Apr 2007
2-Month
1.80"
(45.72mm)
3.67"
(93.22mm)
-1.87"
(-47.50mm)
13th Driest
Driest since:
2008
116th Wettest
Wettest since:
1983
Feb–Apr 2007
3-Month
4.71"
(119.63mm)
6.39"
(162.31mm)
-1.68"
(-42.68mm)
41st Driest
Driest since:
1997
88th Wettest
Wettest since:
1983
Jan–Apr 2007
4-Month
5.32"
(135.13mm)
9.37"
(238.00mm)
-4.05"
(-102.87mm)
15th Driest
Driest since:
2022
114th Wettest
Wettest since:
1995
Dec 2006–Apr 2007
5-Month
7.43"
(188.72mm)
11.92"
(302.77mm)
-4.49"
(-114.05mm)
15th Driest
Driest since:
1977
113th Wettest
Wettest since:
1978
Ties: 2013
Nov 2006–Apr 2007
6-Month
8.91"
(226.31mm)
13.79"
(350.27mm)
-4.88"
(-123.96mm)
11th Driest
Driest since:
1977
117th Wettest
Wettest since:
1983
Oct 2006–Apr 2007
7-Month
9.53"
(242.06mm)
14.82"
(376.43mm)
-5.29"
(-134.37mm)
7th Driest
Driest since:
1977
121st Wettest
Wettest since:
1983
Ties: 1976
Sep 2006–Apr 2007
8-Month
9.65"
(245.11mm)
15.31"
(388.87mm)
-5.66"
(-143.76mm)
6th Driest
Driest since:
1977
122nd Wettest
Wettest since:
1983
Aug 2006–Apr 2007
9-Month
9.71"
(246.63mm)
15.70"
(398.78mm)
-5.99"
(-152.15mm)
4th Driest
Driest since:
1977
124th Wettest
Wettest since:
1983
Jul 2006–Apr 2007
10-Month
10.08"
(256.03mm)
16.03"
(407.16mm)
-5.95"
(-151.13mm)
4th Driest
Driest since:
2021
124th Wettest
Wettest since:
1983
Jun 2006–Apr 2007
11-Month
10.29"
(261.37mm)
16.52"
(419.61mm)
-6.23"
(-158.24mm)
4th Driest
Driest since:
2021
124th Wettest
Wettest since:
1983
May 2006–Apr 2007
12-Month
10.94"
(277.88mm)
17.44"
(442.98mm)
-6.50"
(-165.10mm)
3rd Driest
Driest since:
1977
125th Wettest
Wettest since:
1983
Nov 2005–Apr 2007
18-Month
30.17"
(766.32mm)
31.22"
(792.99mm)
-1.05"
(-26.67mm)
56th Driest
Driest since:
1977
71st Wettest
Wettest since:
1983
May 2005–Apr 2007
24-Month
35.01"
(889.25mm)
34.90"
(886.46mm)
0.11"
(2.79mm)
69th Driest
Driest since:
1977
58th Wettest
Wettest since:
1983
May 2004–Apr 2007
36-Month
56.65"
(1,438.91mm)
52.30"
(1,328.42mm)
4.35"
(110.49mm)
93rd Driest
Driest since:
2022
33rd Wettest
Wettest since:
1984
May 2003–Apr 2007
48-Month
72.38"
(1,838.45mm)
69.56"
(1,766.82mm)
2.82"
(71.63mm)
82nd Driest
Driest since:
2015
43rd Wettest
Wettest since:
1998
May 2002–Apr 2007
60-Month
89.37"
(2,270.00mm)
86.83"
(2,205.48mm)
2.54"
(64.52mm)
83rd Driest
Driest since:
1933
41st Wettest
Wettest since:
1999

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