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.

Northwest Climate Region

Precipitation Rankings, January 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
January 1999
1-Month
5.25"
(133.35mm)
4.53"
(115.06mm)
0.72"
(18.29mm)
92nd Driest
Driest since:
1985
37th Wettest
Wettest since:
1953
Dec 1998–Jan 1999
2-Month
11.44"
(290.58mm)
9.17"
(232.92mm)
2.27"
(57.66mm)
105th Driest
Driest since:
1977
23rd Wettest
Wettest since:
1965
Nov 1998–Jan 1999
3-Month
18.76"
(476.50mm)
13.53"
(343.66mm)
5.23"
(132.84mm)
119th Driest
Driest since:
1977
9th Wettest
Wettest since:
1974
Oct 1998–Jan 1999
4-Month
20.53"
(521.46mm)
16.08"
(408.43mm)
4.45"
(113.03mm)
116th Driest
Driest since:
1977
12th Wettest
Wettest since:
1997
Sep 1998–Jan 1999
5-Month
21.78"
(553.21mm)
17.50"
(444.50mm)
4.28"
(108.71mm)
116th Driest
Driest since:
1977
12th Wettest
Wettest since:
1974
Aug 1998–Jan 1999
6-Month
22.00"
(558.80mm)
18.31"
(465.07mm)
3.69"
(93.73mm)
114th Driest
Driest since:
1977
14th Wettest
Wettest since:
1974
Jul 1998–Jan 1999
7-Month
22.95"
(582.93mm)
19.04"
(483.62mm)
3.91"
(99.31mm)
112th Driest
Driest since:
1977
16th Wettest
Wettest since:
1956
Jun 1998–Jan 1999
8-Month
24.91"
(632.71mm)
20.76"
(527.30mm)
4.15"
(105.41mm)
114th Driest
Driest since:
1977
14th Wettest
Wettest since:
1956
May 1998–Jan 1999
9-Month
29.61"
(752.09mm)
22.91"
(581.91mm)
6.70"
(170.18mm)
120th Driest
Driest since:
1977
8th Wettest
Wettest since:
1997
Apr 1998–Jan 1999
10-Month
31.51"
(800.35mm)
25.27"
(641.86mm)
6.24"
(158.49mm)
119th Driest
Driest since:
1977
9th Wettest
Wettest since:
1997
Mar 1998–Jan 1999
11-Month
34.85"
(885.19mm)
28.53"
(724.66mm)
6.32"
(160.53mm)
119th Driest
Driest since:
1977
9th Wettest
Wettest since:
1997
Feb 1998–Jan 1999
12-Month
38.65"
(981.71mm)
32.13"
(816.10mm)
6.52"
(165.61mm)
119th Driest
Driest since:
1977
9th Wettest
Wettest since:
1997
Aug 1997–Jan 1999
18-Month
58.16"
(1,477.26mm)
50.47"
(1,281.94mm)
7.69"
(195.32mm)
117th Driest
Driest since:
1930
10th Wettest
Wettest since:
1997
Feb 1997–Jan 1999
24-Month
74.27"
(1,886.46mm)
64.28"
(1,632.71mm)
9.99"
(253.75mm)
120th Driest
Driest since:
1931
7th Wettest
Wettest since:
1997
Feb 1996–Jan 1999
36-Month
118.95"
(3,021.33mm)
96.31"
(2,446.27mm)
22.64"
(575.06mm)
124th Driest
Driest since:
1931
2nd Wettest
Wettest since:
1998
Feb 1995–Jan 1999
48-Month
159.93"
(4,062.22mm)
128.35"
(3,260.09mm)
31.58"
(802.13mm)
124th Driest
Driest since:
1932
1st Wettest
Wettest to Date
1999
Feb 1994–Jan 1999
60-Month
192.23"
(4,882.64mm)
160.30"
(4,071.62mm)
31.93"
(811.02mm)
122nd Driest
Driest since:
1933
2nd Wettest
Wettest to Date
2000

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