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, December 2011

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
December 2011
1-Month
4.35"
(110.49mm)
3.11"
(78.99mm)
1.24"
(31.50mm)
107th Driest
Driest since:
1958
21st Wettest
Wettest since:
1990
Nov–Dec 2011
2-Month
10.39"
(263.91mm)
6.23"
(158.24mm)
4.16"
(105.67mm)
124th Driest
Driest since:
1976
4th Wettest
Wettest since:
2015
Oct–Dec 2011
3-Month
13.06"
(331.72mm)
9.13"
(231.90mm)
3.93"
(99.82mm)
120th Driest
Driest since:
1963
8th Wettest
Wettest since:
1990
Sep–Dec 2011
4-Month
17.85"
(453.39mm)
12.60"
(320.04mm)
5.25"
(133.35mm)
124th Driest
Driest since:
1963
4th Wettest
Wettest since:
1926
Aug–Dec 2011
5-Month
20.71"
(526.03mm)
16.27"
(413.26mm)
4.44"
(112.77mm)
116th Driest
Driest since:
1953
12th Wettest
Wettest since:
1926
Jul–Dec 2011
6-Month
24.00"
(609.60mm)
20.27"
(514.86mm)
3.73"
(94.74mm)
108th Driest
Driest since:
1953
20th Wettest
Wettest since:
1926
Jun–Dec 2011
7-Month
29.03"
(737.36mm)
24.52"
(622.81mm)
4.51"
(114.55mm)
111th Driest
Driest since:
1953
17th Wettest
Wettest since:
2015
May–Dec 2011
8-Month
35.01"
(889.25mm)
28.79"
(731.27mm)
6.22"
(157.98mm)
118th Driest
Driest since:
1953
10th Wettest
Wettest since:
2015
Apr–Dec 2011
9-Month
43.73"
(1,110.74mm)
32.70"
(830.58mm)
11.03"
(280.16mm)
126th Driest
Driest since:
1930
2nd Wettest
Wettest to Date
2015
Mar–Dec 2011
10-Month
48.08"
(1,221.23mm)
36.51"
(927.35mm)
11.57"
(293.88mm)
127th Driest
Driest since:
1930
1st Wettest
Wettest to Date
2011
Feb–Dec 2011
11-Month
52.00"
(1,320.80mm)
39.19"
(995.43mm)
12.81"
(325.37mm)
127th Driest
Driest since:
1930
1st Wettest
Wettest to Date
2011
Jan–Dec 2011
12-Month
53.70"
(1,363.98mm)
42.23"
(1,072.64mm)
11.47"
(291.34mm)
126th Driest
Driest since:
1930
2nd Wettest
Wettest to Date
2019
Jul 2010–Dec 2011
18-Month
72.93"
(1,852.42mm)
62.51"
(1,587.75mm)
10.42"
(264.67mm)
120th Driest
Driest since:
1953
7th Wettest
Wettest since:
2019
Ties: 2004
Jan 2010–Dec 2011
24-Month
96.06"
(2,439.92mm)
84.45"
(2,145.03mm)
11.61"
(294.89mm)
116th Driest
Driest since:
1953
11th Wettest
Wettest since:
2019
Jan 2009–Dec 2011
36-Month
146.06"
(3,709.92mm)
126.69"
(3,217.93mm)
19.37"
(491.99mm)
122nd Driest
Driest since:
1954
4th Wettest
Wettest to Date
2020
Jan 2008–Dec 2011
48-Month
195.84"
(4,974.34mm)
168.95"
(4,291.33mm)
26.89"
(683.01mm)
122nd Driest
Driest since:
1955
3rd Wettest
Wettest to Date
2021
Jan 2007–Dec 2011
60-Month
235.66"
(5,985.76mm)
211.20"
(5,364.48mm)
24.46"
(621.28mm)
119th Driest
Driest since:
1956
5th Wettest
Wettest to Date
2021

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