Divisional Rankings

Divisional Data Info
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.

Kentucky, Climate Division 2

December 1990 Palmer Z-Index Rankings

View Period (Months):
  • Record Driest
  • Bottom ⅒
  • Bottom ⅓
  • Normal
  • Top ⅓
  • Top ⅒
  • Record Wettest
PeriodValue
1901-2000
Mean
AnomalyRank
(1895-2025)
Driest/Wettest
Since
Record
December 1990
1-Month
6.670.026.65129th Driest
Driest since:
1930
2nd Wettest
Wettest since:
1978
Nov–Dec 1990
2-Month
3.11-0.073.18127th Driest
Driest since:
1930
4th Wettest
Wettest since:
1978
Oct–Dec 1990
3-Month
2.760.002.76126th Driest
Driest since:
1953, 1963
5th Wettest
Wettest since:
1926
Sep–Dec 1990
4-Month
1.93-0.031.96119th Driest
Driest since:
1953
12th Wettest
Wettest since:
1979
Aug–Dec 1990
5-Month
1.40-0.031.43114th Driest
Driest since:
1953
17th Wettest
Wettest since:
1979
Jul–Dec 1990
6-Month
1.02-0.071.09105th Driest
Driest since:
1930
26th Wettest
Wettest since:
1979
Jun–Dec 1990
7-Month
0.69-0.040.7395th Driest
Driest since:
1930
36th Wettest
Wettest since:
1979
Ties: 1949
May–Dec 1990
8-Month
0.82-0.040.86100th Driest
Driest since:
1930
31st Wettest
Wettest since:
1979
Apr–Dec 1990
9-Month
0.54-0.040.5892nd Driest
Driest since:
1930
39th Wettest
Wettest since:
1979
Mar–Dec 1990
10-Month
0.29-0.040.3381st Driest
Driest since:
1930
50th Wettest
Wettest since:
1979
Ties: 1949
Feb–Dec 1990
11-Month
0.45-0.050.5092nd Driest
Driest since:
1930
39th Wettest
Wettest since:
1979
Jan–Dec 1990
12-Month
0.40-0.040.4490th Driest
Driest since:
1930
41st Wettest
Wettest since:
1979
Jul 1989–Dec 1990
18-Month
0.48-0.040.5294th Driest
Driest since:
1931
36th Wettest
Wettest since:
1979
Jan 1989–Dec 1990
24-Month
0.79-0.040.83120th Driest
Driest since:
1931
10th Wettest
Wettest since:
1979
Jan 1988–Dec 1990
36-Month
0.48-0.030.51103rd Driest
Driest since:
1954
26th Wettest
Wettest since:
2020
Ties: 1981
Jan 1987–Dec 1990
48-Month
0.12-0.030.1575th Driest
Driest since:
1955
53rd Wettest
Wettest since:
2021
Ties: 1920
Jan 1986–Dec 1990
60-Month
0.00-0.030.0358th Driest
Driest since:
1934
69th Wettest
Wettest since:
2021

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