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 1971

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
October 1971
1-Month
2.08"
(52.83mm)
2.90"
(73.66mm)
-0.82"
(-20.83mm)
26th Driest
Driest since:
1963
103rd Wettest
Wettest since:
1919
Ties: 1920
Sep–Oct 1971
2-Month
6.04"
(153.42mm)
6.37"
(161.80mm)
-0.33"
(-8.38mm)
56th Driest
Driest since:
1897
73rd Wettest
Wettest since:
1926
Aug–Oct 1971
3-Month
8.85"
(224.79mm)
10.04"
(255.02mm)
-1.19"
(-30.23mm)
29th Driest
Driest since:
1897
100th Wettest
Wettest since:
1926
Jul–Oct 1971
4-Month
13.89"
(352.81mm)
14.04"
(356.62mm)
-0.15"
(-3.81mm)
55th Driest
Driest since:
1953
74th Wettest
Wettest since:
1926
Ties: 1900
Jun–Oct 1971
5-Month
17.41"
(442.21mm)
18.29"
(464.57mm)
-0.88"
(-22.36mm)
44th Driest
Driest since:
1953
85th Wettest
Wettest since:
1926
May–Oct 1971
6-Month
21.77"
(552.96mm)
22.56"
(573.02mm)
-0.79"
(-20.06mm)
39th Driest
Driest since:
1930
90th Wettest
Wettest since:
2009
Apr–Oct 1971
7-Month
23.61"
(599.69mm)
26.47"
(672.34mm)
-2.86"
(-72.65mm)
24th Driest
Driest since:
1930
105th Wettest
Wettest since:
2009
Mar–Oct 1971
8-Month
25.57"
(649.48mm)
30.28"
(769.11mm)
-4.71"
(-119.63mm)
12th Driest
Driest since:
1930
117th Wettest
Wettest since:
2009
Ties: 1952
Feb–Oct 1971
9-Month
29.32"
(744.73mm)
32.95"
(836.93mm)
-3.63"
(-92.20mm)
19th Driest
Driest since:
1930
110th Wettest
Wettest since:
2019
Jan–Oct 1971
10-Month
31.73"
(805.94mm)
36.00"
(914.40mm)
-4.27"
(-108.46mm)
13th Driest
Driest since:
1930
116th Wettest
Wettest since:
2019
Dec 1970–Oct 1971
11-Month
34.48"
(875.79mm)
39.09"
(992.89mm)
-4.61"
(-117.10mm)
13th Driest
Driest since:
1930
115th Wettest
Wettest since:
2019
Nov 1970–Oct 1971
12-Month
36.65"
(930.91mm)
42.23"
(1,072.64mm)
-5.58"
(-141.73mm)
14th Driest
Driest since:
1963
114th Wettest
Wettest since:
2019
May 1970–Oct 1971
18-Month
62.66"
(1,591.56mm)
64.79"
(1,645.67mm)
-2.13"
(-54.11mm)
33rd Driest
Driest since:
1931
95th Wettest
Wettest since:
2019
Nov 1969–Oct 1971
24-Month
80.94"
(2,055.88mm)
84.46"
(2,145.28mm)
-3.52"
(-89.40mm)
34th Driest
Driest since:
1931
93rd Wettest
Wettest since:
2020
Nov 1968–Oct 1971
36-Month
124.91"
(3,172.71mm)
126.69"
(3,217.93mm)
-1.78"
(-45.22mm)
46th Driest
Driest since:
1954
80th Wettest
Wettest since:
2020
Nov 1967–Oct 1971
48-Month
165.56"
(4,205.22mm)
168.97"
(4,291.84mm)
-3.41"
(-86.62mm)
33rd Driest
Driest since:
1956
92nd Wettest
Wettest since:
2021
Ties: 1939
Nov 1966–Oct 1971
60-Month
208.40"
(5,293.36mm)
211.20"
(5,364.48mm)
-2.80"
(-71.12mm)
39th Driest
Driest since:
1956
85th Wettest
Wettest since:
2020

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