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 1974

View Period (Months):
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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
May 1974
1-Month
0.20"
(5.08mm)
1.11"
(28.19mm)
-0.91"
(-23.11mm)
1st Driest
Driest since:
1974
128th Wettest
Wettest since:
2015
Apr–May 1974
2-Month
0.93"
(23.62mm)
2.17"
(55.12mm)
-1.24"
(-31.50mm)
5th Driest
Driest since:
2002
124th Wettest
Wettest since:
1941
Mar–May 1974
3-Month
1.75"
(44.45mm)
3.33"
(84.58mm)
-1.58"
(-40.13mm)
8th Driest
Driest since:
2002
121st Wettest
Wettest since:
1941
Feb–May 1974
4-Month
2.08"
(52.83mm)
4.33"
(109.98mm)
-2.25"
(-57.15mm)
3rd Driest
Driest since:
2002
126th Wettest
Wettest since:
1905
Jan–May 1974
5-Month
3.62"
(91.95mm)
5.31"
(134.87mm)
-1.69"
(-42.92mm)
17th Driest
Driest since:
1972
112th Wettest
Wettest since:
1905
Ties: 1971
Dec 1973–May 1974
6-Month
4.28"
(108.71mm)
6.32"
(160.53mm)
-2.04"
(-51.82mm)
11th Driest
Driest since:
2002
117th Wettest
Wettest since:
1905
Ties: 1934, 1971
Nov 1973–May 1974
7-Month
5.14"
(130.56mm)
7.21"
(183.13mm)
-2.07"
(-52.57mm)
19th Driest
Driest since:
2002
109th Wettest
Wettest since:
1941
Oct 1973–May 1974
8-Month
5.53"
(140.46mm)
8.34"
(211.84mm)
-2.81"
(-71.38mm)
9th Driest
Driest since:
2002
119th Wettest
Wettest since:
1941
Sep 1973–May 1974
9-Month
6.47"
(164.34mm)
9.71"
(246.63mm)
-3.24"
(-82.29mm)
7th Driest
Driest since:
2002
121st Wettest
Wettest since:
1941
Aug 1973–May 1974
10-Month
7.59"
(192.79mm)
11.72"
(297.69mm)
-4.13"
(-104.90mm)
3rd Driest
Driest since:
2002
125th Wettest
Wettest since:
1941
Jul 1973–May 1974
11-Month
9.68"
(245.87mm)
13.59"
(345.19mm)
-3.91"
(-99.32mm)
5th Driest
Driest since:
2021
123rd Wettest
Wettest since:
1941
Jun 1973–May 1974
12-Month
10.57"
(268.48mm)
14.53"
(369.06mm)
-3.96"
(-100.58mm)
5th Driest
Driest since:
2021
123rd Wettest
Wettest since:
1905
Dec 1972–May 1974
18-Month
18.57"
(471.68mm)
20.86"
(529.84mm)
-2.29"
(-58.16mm)
33rd Driest
Driest since:
2021
94th Wettest
Wettest since:
1942
Jun 1972–May 1974
24-Month
30.24"
(768.10mm)
29.05"
(737.87mm)
1.19"
(30.23mm)
91st Driest
Driest since:
2021
36th Wettest
Wettest since:
1942
Jun 1971–May 1974
36-Month
42.37"
(1,076.20mm)
43.54"
(1,105.92mm)
-1.17"
(-29.72mm)
54th Driest
Driest since:
2022
72nd Wettest
Wettest since:
1907
Jun 1970–May 1974
48-Month
55.00"
(1,397.00mm)
58.01"
(1,473.45mm)
-3.01"
(-76.45mm)
40th Driest
Driest since:
1904
85th Wettest
Wettest since:
1986
Ties: 1991
Jun 1969–May 1974
60-Month
69.74"
(1,771.40mm)
72.48"
(1,840.99mm)
-2.74"
(-69.59mm)
47th Driest
Driest since:
1957
77th Wettest
Wettest since:
1987

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