Regional Rankings

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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

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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: 1964	1963
	2.08" (52.83mm)	2.90" (73.66mm)	-0.82" (-20.83mm)	103rd Wettest	Wettest since: 1970	1919
	Ties: 1920
Sep–Oct 1971 2-Month	6.04" (153.42mm)	6.37" (161.80mm)	-0.33" (-8.38mm)	56th Driest	Driest since: 1968	1897
Sep–Oct 1971 2-Month	6.04" (153.42mm)	6.37" (161.80mm)	-0.33" (-8.38mm)	73rd Wettest	Wettest since: 1970	1926
Aug–Oct 1971 3-Month	8.85" (224.79mm)	10.04" (255.02mm)	-1.19" (-30.23mm)	29th Driest	Driest since: 1964	1897
Aug–Oct 1971 3-Month	8.85" (224.79mm)	10.04" (255.02mm)	-1.19" (-30.23mm)	100th Wettest	Wettest since: 1970	1926
Jul–Oct 1971 4-Month	13.89" (352.81mm)	14.04" (356.62mm)	-0.15" (-3.81mm)	55th Driest	Driest since: 1968	1953
	13.89" (352.81mm)	14.04" (356.62mm)	-0.15" (-3.81mm)	74th Wettest	Wettest since: 1970	1926
	Ties: 1900
Jun–Oct 1971 5-Month	17.41" (442.21mm)	18.29" (464.57mm)	-0.88" (-22.36mm)	44th Driest	Driest since: 1968	1953
Jun–Oct 1971 5-Month	17.41" (442.21mm)	18.29" (464.57mm)	-0.88" (-22.36mm)	85th Wettest	Wettest since: 1970	1926
May–Oct 1971 6-Month	21.77" (552.96mm)	22.56" (573.02mm)	-0.79" (-20.06mm)	39th Driest	Driest since: 1966	1930
May–Oct 1971 6-Month	21.77" (552.96mm)	22.56" (573.02mm)	-0.79" (-20.06mm)	90th Wettest	Wettest since: 1970	2009
Apr–Oct 1971 7-Month	23.61" (599.69mm)	26.47" (672.34mm)	-2.86" (-72.65mm)	24th Driest	Driest since: 1964	1930
Apr–Oct 1971 7-Month	23.61" (599.69mm)	26.47" (672.34mm)	-2.86" (-72.65mm)	105th Wettest	Wettest since: 1970	2009
Mar–Oct 1971 8-Month	25.57" (649.48mm)	30.28" (769.11mm)	-4.71" (-119.63mm)	12th Driest	Driest since: 1963	1930
	25.57" (649.48mm)	30.28" (769.11mm)	-4.71" (-119.63mm)	117th Wettest	Wettest since: 1970	2009
	Ties: 1952
Feb–Oct 1971 9-Month	29.32" (744.73mm)	32.95" (836.93mm)	-3.63" (-92.20mm)	19th Driest	Driest since: 1966	1930
Feb–Oct 1971 9-Month	29.32" (744.73mm)	32.95" (836.93mm)	-3.63" (-92.20mm)	110th Wettest	Wettest since: 1970	2019
Jan–Oct 1971 10-Month	31.73" (805.94mm)	36.00" (914.40mm)	-4.27" (-108.46mm)	13th Driest	Driest since: 1963	1930
Jan–Oct 1971 10-Month	31.73" (805.94mm)	36.00" (914.40mm)	-4.27" (-108.46mm)	116th Wettest	Wettest since: 1970	2019
Dec 1970–Oct 1971 11-Month	34.48" (875.79mm)	39.09" (992.89mm)	-4.61" (-117.10mm)	13th Driest	Driest since: 1966	1930
Dec 1970–Oct 1971 11-Month	34.48" (875.79mm)	39.09" (992.89mm)	-4.61" (-117.10mm)	115th Wettest	Wettest since: 1970	2019
Nov 1970–Oct 1971 12-Month	36.65" (930.91mm)	42.23" (1,072.64mm)	-5.58" (-141.73mm)	14th Driest	Driest since: 1966	1963
Nov 1970–Oct 1971 12-Month	36.65" (930.91mm)	42.23" (1,072.64mm)	-5.58" (-141.73mm)	114th Wettest	Wettest since: 1970	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: 1967	1931
May 1970–Oct 1971 18-Month	62.66" (1,591.56mm)	64.79" (1,645.67mm)	-2.13" (-54.11mm)	95th Wettest	Wettest since: 1970	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: 1967	1931
Nov 1969–Oct 1971 24-Month	80.94" (2,055.88mm)	84.46" (2,145.28mm)	-3.52" (-89.40mm)	93rd Wettest	Wettest since: 1970	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: 1968	1954
Nov 1968–Oct 1971 36-Month	124.91" (3,172.71mm)	126.69" (3,217.93mm)	-1.78" (-45.22mm)	80th Wettest	Wettest since: 1970	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: 1969	1956
	165.56" (4,205.22mm)	168.97" (4,291.84mm)	-3.41" (-86.62mm)	92nd Wettest	Wettest since: 1970	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: 1970	1956
Nov 1966–Oct 1971 60-Month	208.40" (5,293.36mm)	211.20" (5,364.48mm)	-2.80" (-71.12mm)	85th Wettest	Wettest since: 1962	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published November 2022, retrieved on December 2, 2022 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings