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 1940

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
October 1940
1-Month
1.79"
(45.47mm)
2.90"
(73.66mm)
-1.11"
(-28.19mm)
22nd Driest
Driest since:
1963
107th Wettest
Wettest since:
1919
Sep–Oct 1940
2-Month
3.02"
(76.71mm)
6.37"
(161.80mm)
-3.35"
(-85.09mm)
5th Driest
Driest since:
1897
124th Wettest
Wettest since:
1926
Aug–Oct 1940
3-Month
7.46"
(189.48mm)
10.04"
(255.02mm)
-2.58"
(-65.54mm)
13th Driest
Driest since:
1897
116th Wettest
Wettest since:
1926
Jul–Oct 1940
4-Month
9.78"
(248.41mm)
14.04"
(356.62mm)
-4.26"
(-108.21mm)
7th Driest
Driest since:
1953
122nd Wettest
Wettest since:
1926
Jun–Oct 1940
5-Month
13.91"
(353.31mm)
18.29"
(464.57mm)
-4.38"
(-111.26mm)
8th Driest
Driest since:
1953
121st Wettest
Wettest since:
1926
May–Oct 1940
6-Month
17.39"
(441.71mm)
22.56"
(573.02mm)
-5.17"
(-131.31mm)
9th Driest
Driest since:
1930
120th Wettest
Wettest since:
2009
Apr–Oct 1940
7-Month
22.09"
(561.09mm)
26.47"
(672.34mm)
-4.38"
(-111.25mm)
13th Driest
Driest since:
1930
116th Wettest
Wettest since:
2009
Mar–Oct 1940
8-Month
25.33"
(643.38mm)
30.28"
(769.11mm)
-4.95"
(-125.73mm)
9th Driest
Driest since:
1930
120th Wettest
Wettest since:
2009
Feb–Oct 1940
9-Month
28.27"
(718.06mm)
32.95"
(836.93mm)
-4.68"
(-118.87mm)
13th Driest
Driest since:
1930
116th Wettest
Wettest since:
2019
Jan–Oct 1940
10-Month
29.84"
(757.94mm)
36.00"
(914.40mm)
-6.16"
(-156.46mm)
10th Driest
Driest since:
1930
119th Wettest
Wettest since:
2019
Dec 1939–Oct 1940
11-Month
31.66"
(804.16mm)
39.09"
(992.89mm)
-7.43"
(-188.73mm)
7th Driest
Driest since:
1930
121st Wettest
Wettest since:
2019
Nov 1939–Oct 1940
12-Month
33.24"
(844.30mm)
42.23"
(1,072.64mm)
-8.99"
(-228.34mm)
3rd Driest
Driest since:
1963
125th Wettest
Wettest since:
2019
May 1939–Oct 1940
18-Month
52.61"
(1,336.29mm)
64.79"
(1,645.67mm)
-12.18"
(-309.38mm)
4th Driest
Driest since:
1931
124th Wettest
Wettest since:
2019
Nov 1938–Oct 1940
24-Month
76.31"
(1,938.27mm)
84.46"
(2,145.28mm)
-8.15"
(-207.01mm)
10th Driest
Driest since:
1931
117th Wettest
Wettest since:
2020
Nov 1937–Oct 1940
36-Month
118.10"
(2,999.74mm)
126.69"
(3,217.93mm)
-8.59"
(-218.19mm)
15th Driest
Driest since:
1954
111th Wettest
Wettest since:
2020
Nov 1936–Oct 1940
48-Month
164.16"
(4,169.66mm)
168.97"
(4,291.84mm)
-4.81"
(-122.18mm)
27th Driest
Driest since:
1956
98th Wettest
Wettest since:
2021
Nov 1935–Oct 1940
60-Month
198.80"
(5,049.52mm)
211.20"
(5,364.48mm)
-12.40"
(-314.96mm)
14th Driest
Driest since:
1956
110th Wettest
Wettest since:
2020

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