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.

Southwest Climate Region

Precipitation Rankings, May 1989

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1989
1-Month
0.74"
(18.80mm)
1.11"
(28.19mm)
-0.37"
(-9.39mm)
31st Driest
Driest since:
1974
98th Wettest
Wettest since:
2015
Ties: 1961, 1962, 1984
Apr–May 1989
2-Month
1.05"
(26.67mm)
2.17"
(55.12mm)
-1.12"
(-28.45mm)
7th Driest
Driest since:
2002
122nd Wettest
Wettest since:
1941
Mar–May 1989
3-Month
1.83"
(46.48mm)
3.33"
(84.58mm)
-1.50"
(-38.10mm)
10th Driest
Driest since:
2002
119th Wettest
Wettest since:
1941
Feb–May 1989
4-Month
2.71"
(68.83mm)
4.33"
(109.98mm)
-1.62"
(-41.15mm)
12th Driest
Driest since:
2002
117th Wettest
Wettest since:
1905
Ties: 2006
Jan–May 1989
5-Month
3.71"
(94.23mm)
5.31"
(134.87mm)
-1.60"
(-40.64mm)
21st Driest
Driest since:
1972
108th Wettest
Wettest since:
1905
Dec 1988–May 1989
6-Month
4.45"
(113.03mm)
6.32"
(160.53mm)
-1.87"
(-47.50mm)
20th Driest
Driest since:
2002
108th Wettest
Wettest since:
1905
Nov 1988–May 1989
7-Month
5.35"
(135.89mm)
7.21"
(183.13mm)
-1.86"
(-47.24mm)
25th Driest
Driest since:
2002
103rd Wettest
Wettest since:
1941
Ties: 1964
Oct 1988–May 1989
8-Month
5.87"
(149.10mm)
8.34"
(211.84mm)
-2.47"
(-62.74mm)
14th Driest
Driest since:
2002
114th Wettest
Wettest since:
1941
Sep 1988–May 1989
9-Month
7.25"
(184.15mm)
9.71"
(246.63mm)
-2.46"
(-62.48mm)
19th Driest
Driest since:
2002
109th Wettest
Wettest since:
1941
Ties: 1946
Aug 1988–May 1989
10-Month
9.89"
(251.21mm)
11.72"
(297.69mm)
-1.83"
(-46.48mm)
33rd Driest
Driest since:
2002
95th Wettest
Wettest since:
1941
Jul 1988–May 1989
11-Month
11.68"
(296.67mm)
13.59"
(345.19mm)
-1.91"
(-48.52mm)
35th Driest
Driest since:
2021
93rd Wettest
Wettest since:
1941
Jun 1988–May 1989
12-Month
12.90"
(327.66mm)
14.53"
(369.06mm)
-1.63"
(-41.40mm)
44th Driest
Driest since:
2021
84th Wettest
Wettest since:
1905
Ties: 1940
Dec 1987–May 1989
18-Month
19.33"
(490.98mm)
20.86"
(529.84mm)
-1.53"
(-38.86mm)
44th Driest
Driest since:
2021
83rd Wettest
Wettest since:
1942
Jun 1987–May 1989
24-Month
27.52"
(699.01mm)
29.05"
(737.87mm)
-1.53"
(-38.86mm)
52nd Driest
Driest since:
2021
75th Wettest
Wettest since:
1942
Ties: 1978
Jun 1986–May 1989
36-Month
45.69"
(1,160.53mm)
43.54"
(1,105.92mm)
2.15"
(54.61mm)
96th Driest
Driest since:
2022
30th Wettest
Wettest since:
1907
Jun 1985–May 1989
48-Month
61.57"
(1,563.88mm)
58.01"
(1,473.45mm)
3.56"
(90.43mm)
102nd Driest
Driest since:
1904
23rd Wettest
Wettest since:
1986
Jun 1984–May 1989
60-Month
81.24"
(2,063.50mm)
72.48"
(1,840.99mm)
8.76"
(222.51mm)
118th Driest
Driest since:
1957
6th Wettest
Wettest since:
1987

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