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.

Ohio Valley Climate Region

Precipitation Rankings, October 2011

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
October 2011
1-Month
2.67"
(67.82mm)
2.90"
(73.66mm)
-0.23"
(-5.84mm)
63rd Driest
Driest since:
1963
66th Wettest
Wettest since:
1919
Ties: 1996
Sep–Oct 2011
2-Month
7.46"
(189.48mm)
6.37"
(161.80mm)
1.09"
(27.68mm)
94th Driest
Driest since:
1897
35th Wettest
Wettest since:
1926
Aug–Oct 2011
3-Month
10.32"
(262.13mm)
10.04"
(255.02mm)
0.28"
(7.11mm)
75th Driest
Driest since:
1897
54th Wettest
Wettest since:
1926
Jul–Oct 2011
4-Month
13.61"
(345.69mm)
14.04"
(356.62mm)
-0.43"
(-10.93mm)
45th Driest
Driest since:
1953
84th Wettest
Wettest since:
1926
Jun–Oct 2011
5-Month
18.64"
(473.46mm)
18.29"
(464.57mm)
0.35"
(8.89mm)
65th Driest
Driest since:
1953
64th Wettest
Wettest since:
1926
May–Oct 2011
6-Month
24.62"
(625.35mm)
22.56"
(573.02mm)
2.06"
(52.33mm)
83rd Driest
Driest since:
1930
46th Wettest
Wettest since:
2009
Apr–Oct 2011
7-Month
33.34"
(846.84mm)
26.47"
(672.34mm)
6.87"
(174.50mm)
126th Driest
Driest since:
1930
3rd Wettest
Wettest since:
2009
Mar–Oct 2011
8-Month
37.69"
(957.33mm)
30.28"
(769.11mm)
7.41"
(188.22mm)
126th Driest
Driest since:
1930
3rd Wettest
Wettest since:
2009
Feb–Oct 2011
9-Month
41.61"
(1,056.89mm)
32.95"
(836.93mm)
8.66"
(219.96mm)
124th Driest
Driest since:
1930
5th Wettest
Wettest since:
2019
Jan–Oct 2011
10-Month
43.31"
(1,100.07mm)
36.00"
(914.40mm)
7.31"
(185.67mm)
121st Driest
Driest since:
1930
8th Wettest
Wettest since:
2019
Dec 2010–Oct 2011
11-Month
45.30"
(1,150.62mm)
39.09"
(992.89mm)
6.21"
(157.73mm)
116th Driest
Driest since:
1930
12th Wettest
Wettest since:
2019
Nov 2010–Oct 2011
12-Month
49.32"
(1,252.73mm)
42.23"
(1,072.64mm)
7.09"
(180.09mm)
116th Driest
Driest since:
1963
12th Wettest
Wettest since:
2019
May 2010–Oct 2011
18-Month
74.70"
(1,897.38mm)
64.79"
(1,645.67mm)
9.91"
(251.71mm)
119th Driest
Driest since:
1931
9th Wettest
Wettest since:
2019
Nov 2009–Oct 2011
24-Month
91.35"
(2,320.29mm)
84.46"
(2,145.28mm)
6.89"
(175.01mm)
98th Driest
Driest since:
1931
29th Wettest
Wettest since:
2020
Nov 2008–Oct 2011
36-Month
142.77"
(3,626.36mm)
126.69"
(3,217.93mm)
16.08"
(408.43mm)
116th Driest
Driest since:
1954
10th Wettest
Wettest since:
2020
Nov 2007–Oct 2011
48-Month
192.59"
(4,891.79mm)
168.97"
(4,291.84mm)
23.62"
(599.95mm)
119th Driest
Driest since:
1956
6th Wettest
Wettest since:
2021
Nov 2006–Oct 2011
60-Month
231.74"
(5,886.20mm)
211.20"
(5,364.48mm)
20.54"
(521.72mm)
115th Driest
Driest since:
1956
9th Wettest
Wettest since:
2020

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