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, July 1999

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
July 1999
1-Month
2.77"
(70.36mm)
1.87"
(47.50mm)
0.90"
(22.86mm)
122nd Driest
Driest since:
2003
7th Wettest
Wettest since:
1914
Jun–Jul 1999
2-Month
3.94"
(100.08mm)
2.81"
(71.37mm)
1.13"
(28.71mm)
121st Driest
Driest since:
1980
8th Wettest
Wettest since:
1921
May–Jul 1999
3-Month
5.34"
(135.64mm)
3.93"
(99.82mm)
1.41"
(35.82mm)
119th Driest
Driest since:
2002
10th Wettest
Wettest since:
2015
Apr–Jul 1999
4-Month
7.72"
(196.09mm)
4.99"
(126.75mm)
2.73"
(69.34mm)
126th Driest
Driest since:
2002
3rd Wettest
Wettest since:
1914
Mar–Jul 1999
5-Month
8.28"
(210.31mm)
6.14"
(155.96mm)
2.14"
(54.35mm)
124th Driest
Driest since:
2002
5th Wettest
Wettest since:
1941
Feb–Jul 1999
6-Month
8.74"
(222.00mm)
7.14"
(181.36mm)
1.60"
(40.64mm)
116th Driest
Driest since:
2002
13th Wettest
Wettest since:
1941
Ties: 1921
Jan–Jul 1999
7-Month
9.40"
(238.76mm)
8.12"
(206.25mm)
1.28"
(32.51mm)
106th Driest
Driest since:
2002
23rd Wettest
Wettest since:
1905
Dec 1998–Jul 1999
8-Month
9.89"
(251.21mm)
9.13"
(231.90mm)
0.76"
(19.31mm)
88th Driest
Driest since:
2002
40th Wettest
Wettest since:
1941
Nov 1998–Jul 1999
9-Month
10.88"
(276.35mm)
10.02"
(254.51mm)
0.86"
(21.84mm)
92nd Driest
Driest since:
2002
36th Wettest
Wettest since:
1941
Oct 1998–Jul 1999
10-Month
13.19"
(335.03mm)
11.15"
(283.21mm)
2.04"
(51.82mm)
109th Driest
Driest since:
2002
19th Wettest
Wettest since:
1941
Sep 1998–Jul 1999
11-Month
14.37"
(365.00mm)
12.52"
(318.01mm)
1.85"
(46.99mm)
104th Driest
Driest since:
2002
24th Wettest
Wettest since:
1941
Aug 1998–Jul 1999
12-Month
16.03"
(407.16mm)
14.53"
(369.06mm)
1.50"
(38.10mm)
100th Driest
Driest since:
2002
28th Wettest
Wettest since:
1941
Feb 1998–Jul 1999
18-Month
24.72"
(627.89mm)
21.67"
(550.42mm)
3.05"
(77.47mm)
110th Driest
Driest since:
2002
18th Wettest
Wettest since:
1942
Aug 1997–Jul 1999
24-Month
33.99"
(863.35mm)
29.06"
(738.12mm)
4.93"
(125.23mm)
117th Driest
Driest since:
2003
10th Wettest
Wettest since:
1942
Aug 1996–Jul 1999
36-Month
49.76"
(1,263.90mm)
43.55"
(1,106.17mm)
6.21"
(157.73mm)
116th Driest
Driest since:
1956
10th Wettest
Wettest since:
1907
Aug 1995–Jul 1999
48-Month
61.71"
(1,567.43mm)
58.02"
(1,473.71mm)
3.69"
(93.72mm)
102nd Driest
Driest since:
1956
23rd Wettest
Wettest since:
1986
Aug 1994–Jul 1999
60-Month
79.42"
(2,017.27mm)
72.50"
(1,841.50mm)
6.92"
(175.77mm)
111th Driest
Driest since:
1904
13th Wettest
Wettest since:
1987

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