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 1998

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 1998
1-Month
6.36"
(161.54mm)
4.53"
(115.06mm)
1.83"
(46.48mm)
111th Driest
Driest since:
1985
18th Wettest
Wettest since:
1953
Dec 1997–Jan 1998
2-Month
9.05"
(229.87mm)
9.17"
(232.92mm)
-0.12"
(-3.05mm)
64th Driest
Driest since:
1977
64th Wettest
Wettest since:
1965
Nov 1997–Jan 1998
3-Month
12.02"
(305.31mm)
13.53"
(343.66mm)
-1.51"
(-38.35mm)
42nd Driest
Driest since:
1977
86th Wettest
Wettest since:
1974
Oct 1997–Jan 1998
4-Month
16.10"
(408.94mm)
16.08"
(408.43mm)
0.02"
(0.51mm)
63rd Driest
Driest since:
1977
65th Wettest
Wettest since:
1997
Sep 1997–Jan 1998
5-Month
18.54"
(470.92mm)
17.50"
(444.50mm)
1.04"
(26.42mm)
78th Driest
Driest since:
1977
50th Wettest
Wettest since:
1974
Aug 1997–Jan 1998
6-Month
19.51"
(495.55mm)
18.31"
(465.07mm)
1.20"
(30.48mm)
80th Driest
Driest since:
1977
48th Wettest
Wettest since:
1974
Ties: 1959
Jul 1997–Jan 1998
7-Month
20.98"
(532.89mm)
19.04"
(483.62mm)
1.94"
(49.27mm)
92nd Driest
Driest since:
1977
36th Wettest
Wettest since:
1956
Jun 1997–Jan 1998
8-Month
23.22"
(589.79mm)
20.76"
(527.30mm)
2.46"
(62.49mm)
97th Driest
Driest since:
1977
31st Wettest
Wettest since:
1956
May 1997–Jan 1998
9-Month
25.18"
(639.57mm)
22.91"
(581.91mm)
2.27"
(57.66mm)
92nd Driest
Driest since:
1977
36th Wettest
Wettest since:
1997
Apr 1997–Jan 1998
10-Month
28.47"
(723.14mm)
25.27"
(641.86mm)
3.20"
(81.28mm)
98th Driest
Driest since:
1977
30th Wettest
Wettest since:
1997
Mar 1997–Jan 1998
11-Month
33.19"
(843.03mm)
28.53"
(724.66mm)
4.66"
(118.37mm)
111th Driest
Driest since:
1977
17th Wettest
Wettest since:
1997
Feb 1997–Jan 1998
12-Month
35.62"
(904.75mm)
32.13"
(816.10mm)
3.49"
(88.65mm)
99th Driest
Driest since:
1977
29th Wettest
Wettest since:
1997
Aug 1996–Jan 1998
18-Month
63.05"
(1,601.47mm)
50.47"
(1,281.94mm)
12.58"
(319.53mm)
125th Driest
Driest since:
1930
2nd Wettest
Wettest since:
1997
Feb 1996–Jan 1998
24-Month
80.30"
(2,039.62mm)
64.28"
(1,632.71mm)
16.02"
(406.91mm)
125th Driest
Driest since:
1931
2nd Wettest
Wettest since:
1997
Feb 1995–Jan 1998
36-Month
121.28"
(3,080.51mm)
96.31"
(2,446.27mm)
24.97"
(634.24mm)
125th Driest
Driest since:
1931
1st Wettest
Wettest to Date
1998
Feb 1994–Jan 1998
48-Month
153.58"
(3,900.93mm)
128.35"
(3,260.09mm)
25.23"
(640.84mm)
123rd Driest
Driest since:
1932
2nd Wettest
Wettest to Date
1999
Feb 1993–Jan 1998
60-Month
182.20"
(4,627.88mm)
160.30"
(4,071.62mm)
21.90"
(556.26mm)
120th Driest
Driest since:
1933
4th Wettest
Wettest since:
2000

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