Climate at a Glance | Divisional Rankings | National Centers for Environmental Information (NCEI)

Divisional Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska or Hawaii. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Louisiana, Climate Division 7

December 1998 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1998 1-Month	-0.77	-0.09	-0.68	61st Driest	Driest since: 1996	1917
December 1998 1-Month	-0.77	-0.09	-0.68	70th Wettest	Wettest since: 1997	1982
Nov–Dec 1998 2-Month	-0.23	-0.09	-0.14	63rd Driest	Driest since: 1996	1917
Nov–Dec 1998 2-Month	-0.23	-0.09	-0.14	68th Wettest	Wettest since: 1997	1940
Oct–Dec 1998 3-Month	0.15	-0.06	0.21	77th Driest	Driest since: 1997	1917
	0.15	-0.06	0.21	54th Wettest	Wettest since: 1996	2002
	Ties: 1979
Sep–Dec 1998 4-Month	1.26	-0.09	1.35	115th Driest	Driest since: 1997	1924
Sep–Dec 1998 4-Month	1.26	-0.09	1.35	16th Wettest	Wettest since: 1985	2002
Aug–Dec 1998 5-Month	0.84	-0.09	0.93	106th Driest	Driest since: 1997	1924
Aug–Dec 1998 5-Month	0.84	-0.09	0.93	25th Wettest	Wettest since: 1996	1940
Jul–Dec 1998 6-Month	0.17	-0.08	0.25	75th Driest	Driest since: 1997	1924
Jul–Dec 1998 6-Month	0.17	-0.08	0.25	56th Wettest	Wettest since: 1996	1940
Jun–Dec 1998 7-Month	-0.11	-0.08	-0.03	56th Driest	Driest since: 1997	1924
	-0.11	-0.08	-0.03	75th Wettest	Wettest since: 1996	1940
	Ties: 1993, 1994
May–Dec 1998 8-Month	-0.59	-0.06	-0.53	36th Driest	Driest since: 1990	1924
	-0.59	-0.06	-0.53	95th Wettest	Wettest since: 1997	1940
	Ties: 1926
Apr–Dec 1998 9-Month	-0.54	-0.05	-0.49	36th Driest	Driest since: 1990	1924
Apr–Dec 1998 9-Month	-0.54	-0.05	-0.49	95th Wettest	Wettest since: 1997	1940
Mar–Dec 1998 10-Month	-0.48	-0.05	-0.43	38th Driest	Driest since: 1990	1924
Mar–Dec 1998 10-Month	-0.48	-0.05	-0.43	93rd Wettest	Wettest since: 1997	1940
Feb–Dec 1998 11-Month	-0.36	-0.06	-0.30	41st Driest	Driest since: 1990	1924
	-0.36	-0.06	-0.30	90th Wettest	Wettest since: 1997	1940
	Ties: 1910, 1960
Jan–Dec 1998 12-Month	0.10	-0.06	0.16	70th Driest	Driest since: 1996	1954
	0.10	-0.06	0.16	61st Wettest	Wettest since: 1997	1940
	Ties: 1968
Jul 1997–Dec 1998 18-Month	-0.09	-0.07	-0.02	59th Driest	Driest since: 1996	1925
	-0.09	-0.07	-0.02	71st Wettest	Wettest since: 1997	1941
	Ties: 1915
Jan 1997–Dec 1998 24-Month	0.21	-0.05	0.26	89th Driest	Driest since: 1997	2011
	0.21	-0.05	0.26	41st Wettest	Wettest since: 1995	1941
	Ties: 1994
Jan 1996–Dec 1998 36-Month	0.01	-0.05	0.06	71st Driest	Driest since: 1982	1918
Jan 1996–Dec 1998 36-Month	0.01	-0.05	0.06	58th Wettest	Wettest since: 1997	1942
Jan 1995–Dec 1998 48-Month	0.15	-0.04	0.19	88th Driest	Driest since: 1997	1904
	0.15	-0.04	0.19	40th Wettest	Wettest since: 1996	1943
	Ties: 1979, 1990
Jan 1994–Dec 1998 60-Month	0.10	-0.04	0.14	80th Driest	Driest since: 1990	1910
Jan 1994–Dec 1998 60-Month	0.10	-0.04	0.14	47th Wettest	Wettest since: 1997	1944

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

Louisiana, Climate Division 7

December 1998 Palmer Z-Index Rankings

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