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 2011

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Record Driest

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
October 2011 1-Month	2.67" (67.82mm)	2.90" (73.66mm)	-0.23" (-5.84mm)	63rd Driest	Driest since: 2010	1963
	2.67" (67.82mm)	2.90" (73.66mm)	-0.23" (-5.84mm)	66th Wettest	Wettest since: 2009	1919
	Ties: 1996
Sep–Oct 2011 2-Month	7.46" (189.48mm)	6.37" (161.80mm)	1.09" (27.68mm)	94th Driest	Driest since: 2010	1897
Sep–Oct 2011 2-Month	7.46" (189.48mm)	6.37" (161.80mm)	1.09" (27.68mm)	35th Wettest	Wettest since: 2009	1926
Aug–Oct 2011 3-Month	10.32" (262.13mm)	10.04" (255.02mm)	0.28" (7.11mm)	75th Driest	Driest since: 2010	1897
Aug–Oct 2011 3-Month	10.32" (262.13mm)	10.04" (255.02mm)	0.28" (7.11mm)	54th Wettest	Wettest since: 2009	1926
Jul–Oct 2011 4-Month	13.61" (345.69mm)	14.04" (356.62mm)	-0.43" (-10.93mm)	45th Driest	Driest since: 2010	1953
Jul–Oct 2011 4-Month	13.61" (345.69mm)	14.04" (356.62mm)	-0.43" (-10.93mm)	84th Wettest	Wettest since: 2009	1926
Jun–Oct 2011 5-Month	18.64" (473.46mm)	18.29" (464.57mm)	0.35" (8.89mm)	65th Driest	Driest since: 2007	1953
Jun–Oct 2011 5-Month	18.64" (473.46mm)	18.29" (464.57mm)	0.35" (8.89mm)	64th Wettest	Wettest since: 2010	1926
May–Oct 2011 6-Month	24.62" (625.35mm)	22.56" (573.02mm)	2.06" (52.33mm)	83rd Driest	Driest since: 2007	1930
May–Oct 2011 6-Month	24.62" (625.35mm)	22.56" (573.02mm)	2.06" (52.33mm)	46th Wettest	Wettest since: 2010	2009
Apr–Oct 2011 7-Month	33.34" (846.84mm)	26.47" (672.34mm)	6.87" (174.50mm)	126th Driest	Driest since: 2010	1930
Apr–Oct 2011 7-Month	33.34" (846.84mm)	26.47" (672.34mm)	6.87" (174.50mm)	3rd Wettest	Wettest since: 2009	2009
Mar–Oct 2011 8-Month	37.69" (957.33mm)	30.28" (769.11mm)	7.41" (188.22mm)	126th Driest	Driest since: 2010	1930
Mar–Oct 2011 8-Month	37.69" (957.33mm)	30.28" (769.11mm)	7.41" (188.22mm)	3rd Wettest	Wettest since: 2009	2009
Feb–Oct 2011 9-Month	41.61" (1,056.89mm)	32.95" (836.93mm)	8.66" (219.96mm)	124th Driest	Driest since: 2010	1930
Feb–Oct 2011 9-Month	41.61" (1,056.89mm)	32.95" (836.93mm)	8.66" (219.96mm)	5th Wettest	Wettest since: 2009	2019
Jan–Oct 2011 10-Month	43.31" (1,100.07mm)	36.00" (914.40mm)	7.31" (185.67mm)	121st Driest	Driest since: 2010	1930
Jan–Oct 2011 10-Month	43.31" (1,100.07mm)	36.00" (914.40mm)	7.31" (185.67mm)	8th Wettest	Wettest since: 2009	2019
Dec 2010–Oct 2011 11-Month	45.30" (1,150.62mm)	39.09" (992.89mm)	6.21" (157.73mm)	116th Driest	Driest since: 2010	1930
Dec 2010–Oct 2011 11-Month	45.30" (1,150.62mm)	39.09" (992.89mm)	6.21" (157.73mm)	12th Wettest	Wettest since: 2009	2019
Nov 2010–Oct 2011 12-Month	49.32" (1,252.73mm)	42.23" (1,072.64mm)	7.09" (180.09mm)	116th Driest	Driest since: 2010	1963
Nov 2010–Oct 2011 12-Month	49.32" (1,252.73mm)	42.23" (1,072.64mm)	7.09" (180.09mm)	12th Wettest	Wettest since: 2009	2019
May 2010–Oct 2011 18-Month	74.70" (1,897.38mm)	64.79" (1,645.67mm)	9.91" (251.71mm)	119th Driest	Driest since: 2010	1931
May 2010–Oct 2011 18-Month	74.70" (1,897.38mm)	64.79" (1,645.67mm)	9.91" (251.71mm)	9th Wettest	Wettest since: 2009	2019
Nov 2009–Oct 2011 24-Month	91.35" (2,320.29mm)	84.46" (2,145.28mm)	6.89" (175.01mm)	98th Driest	Driest since: 2008	1931
Nov 2009–Oct 2011 24-Month	91.35" (2,320.29mm)	84.46" (2,145.28mm)	6.89" (175.01mm)	29th Wettest	Wettest since: 2010	2020
Nov 2008–Oct 2011 36-Month	142.77" (3,626.36mm)	126.69" (3,217.93mm)	16.08" (408.43mm)	116th Driest	Driest since: 2009	1954
Nov 2008–Oct 2011 36-Month	142.77" (3,626.36mm)	126.69" (3,217.93mm)	16.08" (408.43mm)	10th Wettest	Wettest since: 2010	2020
Nov 2007–Oct 2011 48-Month	192.59" (4,891.79mm)	168.97" (4,291.84mm)	23.62" (599.95mm)	119th Driest	Driest since: 2010	1956
Nov 2007–Oct 2011 48-Month	192.59" (4,891.79mm)	168.97" (4,291.84mm)	23.62" (599.95mm)	6th Wettest	Wettest since: 1975	2021
Nov 2006–Oct 2011 60-Month	231.74" (5,886.20mm)	211.20" (5,364.48mm)	20.54" (521.72mm)	115th Driest	Driest since: 2010	1956
Nov 2006–Oct 2011 60-Month	231.74" (5,886.20mm)	211.20" (5,364.48mm)	20.54" (521.72mm)	9th Wettest	Wettest since: 1976	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on January 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings