244985 - LEWISTOWN MUNICIPAL ARPT, Montana

Latitude
47° 3´N
Longitude
109° 27´W
Elevation
1263 meters

COOP Northwest

Montana
Help

Main
10 nearest COOP Northwest stations
9 miNNE :HILGER, MT
12 miW :HOBSON, MT
14 miW :MOCCASIN EXPERIMENT STN, MT
18 miNW :DENTON 1 NNE, MT
21 miN :WINIFRED, MT
32 miNNW :ILIAD, MT
34 miS :LEWISTOWN 11 SSE, MT
37 miE :GRASS RANGE, MT
39 miSSW :BUFFALO, MT
39 miENE :ROY 8 NE, MT

Weather variables    Help
Click a weather variable name to jump down to those statistics.
Total
observations
%
NDJFM
observations
%
TMAX
18106
99.1%
7437
98.3%
TMIN
18107
99.1%
7437
98.3%
PRCP
18106
99.1%
7436
98.3%
SNOW
17991
98.5%
7395
97.8%




TMAX     Help     top of page

TMAX
observations
mean
std dev
   
Distribution
during extreme days of
NDJFM
7437  by year
36.7°F
15.6°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>=57°F
525
0.25
88
36
2.4*
map
table
Extreme low events
Days with TMAX<=9°F
502
-0.36
80
154
1.9*
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>=57°F
525
0.85
189
11
17.2*
map
table
Extreme low events
Days with TMAX<=9°F
502
-1.14
14
235
16.8*
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>=57°F
525
91
95
1.0
map
table
Extreme low events
Days with TMAX<=9°F
502
53
94
1.8*
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
7437  by year
14.9°F
15.5°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<=-13°F
498
-0.32
87
138
1.6*
map
table
Extreme high events
Days with TMIN>=34°F
576
0.27
116
53
2.2*
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<=-13°F
498
-1.20
15
239
15.9*
map
table
Extreme high events
Days with TMIN>=34°F
576
0.49
140
29
4.8*
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<=-13°F
498
47
88
1.9*
map
table
Extreme high events
Days with TMIN>=34°F
576
88
105
1.2
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
7436  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"
2172
0.09"
-0.08
322
404
1.3*
map
table
Extreme events
Days with PRCP>0.13"
422
0.26"
0.05
67
65
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"
2172
0.09"
-0.34
223
495
2.2*
map
table
Extreme events
Days with PRCP>0.13"
422
0.26"
-0.28
48
95
2.0*
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"
2172
0.09"
275
348
1.3*
map
table
Extreme events
Days with PRCP>0.13"
422
0.26"
56
64
1.1
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
7395  by year
0.30"
   
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"
1933
1.14"
-0.10
295
379
1.3*
map
table
Extreme events
Days with SNOW>1.8"
381
3.13"
-0.09
56
73
1.3
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"
1933
1.14"
-0.42
169
478
2.8*
map
table
Extreme events
Days with SNOW>1.8"
381
3.13"
-0.40
31
90
2.9*
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"
1933
1.14"
236
306
1.3*
map
table
Extreme events
Days with SNOW>1.8"
381
3.13"
50
50
1.0
map
table

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