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 1990

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
December 1990
1-Month
7.44"
(188.98mm)
3.11"
(78.99mm)
4.33"
(109.99mm)
127th Driest
Driest since:
1958
1st Wettest
Wettest to Date
1990
Nov–Dec 1990
2-Month
10.54"
(267.72mm)
6.23"
(158.24mm)
4.31"
(109.48mm)
125th Driest
Driest since:
1976
3rd Wettest
Wettest since:
2015
Oct–Dec 1990
3-Month
15.02"
(381.51mm)
9.13"
(231.90mm)
5.89"
(149.61mm)
127th Driest
Driest since:
1963
1st Wettest
Wettest to Date
1990
Sep–Dec 1990
4-Month
17.84"
(453.14mm)
12.60"
(320.04mm)
5.24"
(133.10mm)
123rd Driest
Driest since:
1963
5th Wettest
Wettest since:
1926
Aug–Dec 1990
5-Month
21.49"
(545.85mm)
16.27"
(413.26mm)
5.22"
(132.59mm)
122nd Driest
Driest since:
1953
6th Wettest
Wettest since:
1926
Jul–Dec 1990
6-Month
25.98"
(659.89mm)
20.27"
(514.86mm)
5.71"
(145.03mm)
122nd Driest
Driest since:
1953
6th Wettest
Wettest since:
1926
Jun–Dec 1990
7-Month
30.42"
(772.67mm)
24.52"
(622.81mm)
5.90"
(149.86mm)
121st Driest
Driest since:
1953
7th Wettest
Wettest since:
2015
May–Dec 1990
8-Month
37.75"
(958.85mm)
28.79"
(731.27mm)
8.96"
(227.58mm)
126th Driest
Driest since:
1953
2nd Wettest
Wettest to Date
2015
Apr–Dec 1990
9-Month
40.96"
(1,040.38mm)
32.70"
(830.58mm)
8.26"
(209.80mm)
124th Driest
Driest since:
1930
4th Wettest
Wettest to Date
2015
Mar–Dec 1990
10-Month
44.58"
(1,132.33mm)
36.51"
(927.35mm)
8.07"
(204.98mm)
122nd Driest
Driest since:
1930
6th Wettest
Wettest since:
2011
Feb–Dec 1990
11-Month
49.69"
(1,262.13mm)
39.19"
(995.43mm)
10.50"
(266.70mm)
123rd Driest
Driest since:
1930
5th Wettest
Wettest to Date
2011
Jan–Dec 1990
12-Month
52.73"
(1,339.34mm)
42.23"
(1,072.64mm)
10.50"
(266.70mm)
124th Driest
Driest since:
1930
4th Wettest
Wettest to Date
2019
Jul 1989–Dec 1990
18-Month
72.38"
(1,838.45mm)
62.51"
(1,587.75mm)
9.87"
(250.70mm)
118th Driest
Driest since:
1953
9th Wettest
Wettest since:
2019
Jan 1989–Dec 1990
24-Month
97.45"
(2,475.23mm)
84.45"
(2,145.03mm)
13.00"
(330.20mm)
118th Driest
Driest since:
1953
9th Wettest
Wettest since:
2019
Jan 1988–Dec 1990
36-Month
133.45"
(3,389.63mm)
126.69"
(3,217.93mm)
6.76"
(171.70mm)
90th Driest
Driest since:
1954
36th Wettest
Wettest since:
2020
Jan 1987–Dec 1990
48-Month
170.93"
(4,341.62mm)
168.95"
(4,291.33mm)
1.98"
(50.29mm)
62nd Driest
Driest since:
1955
63rd Wettest
Wettest since:
2021
Jan 1986–Dec 1990
60-Month
212.10"
(5,387.34mm)
211.20"
(5,364.48mm)
0.90"
(22.86mm)
57th Driest
Driest since:
1956
67th Wettest
Wettest since:
2021

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