246635 - POLSON, Montana

Latitude
47° 40´N
Longitude
114° 12´W
Elevation
911 meters

COOP Northwest

Montana
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Main
10 nearest COOP Northwest stations
1 miNW :POLSON KERR DAM, MT
6 miSSW :ROUND BUTTE 1 NNE, MT
6 miNNW :BIG ARM, MT
10 miNNE :BIGFORK 13 S, MT
12 miW :LONEPINE, MT
13 miW :LONEPINE 1 WNW, MT
14 miWSW :HOT SPRINGS, MT
15 miS :ST IGNATIUS, MT
21 miSW :PARADISE, MT
21 miWSW :PLAINS RANGER STATION, MT

Weather variables    Help
Click a weather variable name to jump down to those statistics.
Total
observations
%
NDJFM
observations
%
TMAX
15145
82.9%
6280
83.0%
TMIN
15136
82.9%
6273
82.9%
PRCP
15154
83.0%
6270
82.9%
SNOW
11144
61.0%
3214
42.5%




TMAX     Help     top of page

TMAX
observations
mean
std dev
   
Distribution
during extreme days of
NDJFM
6280  by year
37.9°F
11.3°F
   
overall
NAM
PNA
CTI

TMAX and NAM    Help
scatterplot
days
by month
mean
NAM index
extreme high
NAM days
extreme low
NAM days
ratio of extreme
high:low NAM days
Extreme high events
Days with TMAX>=53°F
439
0.30
103
45
2.3*
map
table
Extreme low events
Days with TMAX<=19°F
422
0.07
100
91
1.1
map
table

TMAX and PNA    Help
scatterplot
days
by month
mean
PNA index
extreme high
PNA days
extreme low
PNA days
ratio of extreme
high:low PNA days
Extreme high events
Days with TMAX>=53°F
439
0.41
96
25
3.8*
map
table
Extreme low events
Days with TMAX<=19°F
422
-0.97
9
180
20.0*
map
table

TMAX and CTI    Help
days
by month
high CTI days
(moderate to strong
El Niño winters)
low CTI days
(moderate to strong
La Niña winters)
ratio of high:low CTI
(El Niño:La Niña days)
Extreme high events
Days with TMAX>=53°F
439
69
55
1.3
map
table
Extreme low events
Days with TMAX<=19°F
422
31
76
2.5*
map
table

TMAX under 2 index extremes     Help
Station table Maps - choose one extreme:
High NAMLow NAM High PNALow PNA High CTILow CTI




TMIN     Help     top of page

TMIN
observations
mean
std dev
   
Distribution
during extreme days of
NDJFM
6273  by year
23.8°F
11.0°F
   
overall
NAM
PNA
CTI

TMIN and NAM    Help
scatterplot
days
by month
mean
NAM index
extreme high
NAM days
extreme low
NAM days
ratio of extreme
high:low NAM days
Extreme low events
Days with TMIN<=5°F
462
0.03
113
98
1.2
map
table
Extreme high events
Days with TMIN>=37°F
421
0.24
81
39
2.1*
map
table

TMIN and PNA    Help
scatterplot
days
by month
mean
PNA index
extreme high
PNA days
extreme low
PNA days
ratio of extreme
high:low PNA days
Extreme low events
Days with TMIN<=5°F
462
-1.05
7
208
29.7*
map
table
Extreme high events
Days with TMIN>=37°F
421
0.36
86
23
3.7*
map
table

TMIN and CTI    Help
days
by month
high CTI days
(moderate to strong
El Niño winters)
low CTI days
(moderate to strong
La Niña winters)
ratio of high:low CTI
(El Niño:La Niña days)
Extreme low events
Days with TMIN<=5°F
462
24
90
3.8*
map
table
Extreme high events
Days with TMIN>=37°F
421
68
73
1.1
map
table

TMIN under 2 index extremes     Help
Station table Maps - choose one extreme:
High NAMLow NAM High PNALow PNA High CTILow CTI




PRCP (total liquid water equivalent)     Help     top of page

PRCP
observations
mean
   
Distribution
during extreme days of
NDJFM
6270  by year
0.03"
   
overall
NAM
PNA
CTI

PRCP and NAM    Help
scatterplot
days
by month
mean
mean
NAM index
extreme high
NAM days
extreme low
NAM days
ratio of extreme
high:low NAM days
Observed events
Days with PRCP>0.00"
2065
0.10"
0.04
359
313
1.1
map
table
Extreme events
Days with PRCP>0.16"
409
0.29"
-0.04
62
61
1.0
map
table

PRCP and PNA    Help
scatterplot
days
by month
mean
mean
PNA index
extreme high
PNA days
extreme low
PNA days
ratio of extreme
high:low PNA days
Observed events
Days with PRCP>0.00"
2065
0.10"
-0.18
265
389
1.5*
map
table
Extreme events
Days with PRCP>0.16"
409
0.29"
-0.01
63
58
1.1
map
table

PRCP and CTI    Help
days
by month
mean
high CTI days
(moderate to strong
El Niño winters)
low CTI days
(moderate to strong
La Niña winters)
ratio of high:low CTI
(El Niño:La Niña days)
Observed events
Days with PRCP>0.00"
2065
0.10"
307
394
1.3*
map
table
Extreme events
Days with PRCP>0.16"
409
0.29"
56
73
1.3
map
table

PRCP under 2 index extremes     Help
Station table Maps - choose one extreme:
High NAMLow NAM High PNALow PNA High CTILow CTI




SNOW     Help     top of page

SNOW
observations
mean
   
Distribution
during extreme days of
NDJFM
3214  by year
0.19"
   
overall
NAM
PNA
CTI

SNOW and NAM    Help
scatterplot
days
by month
mean
mean
NAM index
extreme high
NAM days
extreme low
NAM days
ratio of extreme
high:low NAM days
Observed events
Days with SNOW>0.0"
287
2.09"
-0.05
52
51
1.0
map
table
Extreme events
Days with SNOW>3.0"
56
5.08"
-0.04
10
11
1.1
map
table

SNOW and PNA    Help
scatterplot
days
by month
mean
mean
PNA index
extreme high
PNA days
extreme low
PNA days
ratio of extreme
high:low PNA days
Observed events
Days with SNOW>0.0"
287
2.09"
-0.77
16
98
6.1*
map
table
Extreme events
Days with SNOW>3.0"
56
5.08"
-1.00
3
20
6.7*
map
table

SNOW and CTI    Help
days
by month
mean
high CTI days
(moderate to strong
El Niño winters)
low CTI days
(moderate to strong
La Niña winters)
ratio of high:low CTI
(El Niño:La Niña days)
Observed events
Days with SNOW>0.0"
287
2.09"
15
103
6.9*
map
table
Extreme events
Days with SNOW>3.0"
56
5.08"
2
18
9.0*
map
table

SNOW under 2 index extremes     Help
Station table Maps - choose one extreme:
High NAMLow NAM High PNALow PNA High CTILow CTI