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.

South Climate Region

Precipitation Rankings, May 2009

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
May 2009
1-Month
4.26"
(108.20mm)
4.05"
(102.87mm)
0.21"
(5.33mm)
77th Driest
Driest since:
1998
52nd Wettest
Wettest since:
2015
Apr–May 2009
2-Month
8.22"
(208.79mm)
7.26"
(184.40mm)
0.96"
(24.39mm)
95th Driest
Driest since:
1998
34th Wettest
Wettest since:
2015
Mar–May 2009
3-Month
11.63"
(295.40mm)
9.96"
(252.98mm)
1.67"
(42.42mm)
103rd Driest
Driest since:
1925
26th Wettest
Wettest since:
2015
Feb–May 2009
4-Month
12.85"
(326.39mm)
12.19"
(309.63mm)
0.66"
(16.76mm)
83rd Driest
Driest since:
1925
46th Wettest
Wettest since:
2015
Jan–May 2009
5-Month
13.90"
(353.06mm)
14.42"
(366.27mm)
-0.52"
(-13.21mm)
57th Driest
Driest since:
1963
72nd Wettest
Wettest since:
2015
Ties: 1914
Dec 2008–May 2009
6-Month
15.90"
(403.86mm)
16.92"
(429.77mm)
-1.02"
(-25.91mm)
51st Driest
Driest since:
1963
77th Wettest
Wettest since:
2015
Ties: 1930
Nov 2008–May 2009
7-Month
17.44"
(442.98mm)
19.34"
(491.24mm)
-1.90"
(-48.26mm)
40th Driest
Driest since:
1971
88th Wettest
Wettest since:
2016
Oct 2008–May 2009
8-Month
20.20"
(513.08mm)
22.04"
(559.82mm)
-1.84"
(-46.74mm)
45th Driest
Driest since:
1925
83rd Wettest
Wettest since:
2019
Sep 2008–May 2009
9-Month
24.53"
(623.06mm)
25.25"
(641.35mm)
-0.72"
(-18.29mm)
51st Driest
Driest since:
1918
77th Wettest
Wettest since:
2019
Aug 2008–May 2009
10-Month
29.80"
(756.92mm)
28.19"
(716.03mm)
1.61"
(40.89mm)
77th Driest
Driest since:
1925
51st Wettest
Wettest since:
2019
Jul 2008–May 2009
11-Month
32.39"
(822.71mm)
31.39"
(797.31mm)
1.00"
(25.40mm)
73rd Driest
Driest since:
1925
55th Wettest
Wettest since:
2019
Jun 2008–May 2009
12-Month
35.58"
(903.73mm)
34.90"
(886.46mm)
0.68"
(17.27mm)
63rd Driest
Driest since:
1925
65th Wettest
Wettest since:
2019
Ties: 1994
Dec 2007–May 2009
18-Month
52.51"
(1,333.75mm)
51.87"
(1,317.50mm)
0.64"
(16.25mm)
68th Driest
Driest since:
1918
59th Wettest
Wettest since:
2016
Jun 2007–May 2009
24-Month
73.13"
(1,857.50mm)
69.89"
(1,775.21mm)
3.24"
(82.29mm)
79th Driest
Driest since:
1918
48th Wettest
Wettest since:
2020
Jun 2006–May 2009
36-Month
110.61"
(2,809.49mm)
104.83"
(2,662.68mm)
5.78"
(146.81mm)
92nd Driest
Driest since:
1956
34th Wettest
Wettest since:
1975
Jun 2005–May 2009
48-Month
139.15"
(3,534.41mm)
139.71"
(3,548.63mm)
-0.56"
(-14.22mm)
58th Driest
Driest since:
1956
67th Wettest
Wettest since:
1975
Jun 2004–May 2009
60-Month
180.17"
(4,576.32mm)
174.45"
(4,431.03mm)
5.72"
(145.29mm)
79th Driest
Driest since:
1957
45th Wettest
Wettest since:
2019

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