040144 - ALTADENA, California

Latitude
34° 11´N
Longitude
118° 8´W
Elevation
344 meters

COOP Southwest

California
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Main
10 nearest COOP Southwest stations
1 miSSW :PASADENA, CA
2 miNW :ARROYO SECO RANGER STN, CA
3 miESE :SIERRA MADRE HENSZEY, CA
3 miNNE :CAMP HILL OPIDS 57B, CA
3 miNNE :OPIDS CAMP FC 57 B E, CA
3 miNE :MT WILSON NO 2, CA
4 miSSE :SAN GABRIEL FIRE DEPT, CA
4 miENE :HOEGEES FC 60 A, CA
4 miWNW :LA CRESCENTA FC 251C, CA
4 miENE :SANTA ANITA F L FC 432, CA

Weather variables    Help
Click a weather variable name to jump down to those statistics.
Total
observations
%
NDJFM
observations
%
TMAX
0
0.0%
0
0.0%
TMIN
0
0.0%
0
0.0%
PRCP
17654
96.7%
7360
97.3%
SNOW
17709
97.0%
7381
97.6%




TMAX     top of page

Data not shown:
Less than 5% of days have TMAX observations during NDJFM over 1948-1997

No TMAX extreme events during NDJFM over 1948-1997



TMIN     top of page

Data not shown:
Less than 5% of days have TMIN observations during NDJFM over 1948-1997

No TMIN extreme events during NDJFM over 1948-1997



PRCP (total liquid water equivalent)     Help     top of page

PRCP
observations
mean
   
Distribution
during extreme days of
NDJFM
7360  by year
0.12"
   
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"
1212
0.71"
-0.06
212
243
1.1
map
table
Extreme events
Days with PRCP>1.15"
241
2.21"
0.04
43
52
1.2
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"
1212
0.71"
-0.31
152
309
2.0*
map
table
Extreme events
Days with PRCP>1.15"
241
2.21"
-0.32
33
69
2.1*
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"
1212
0.71"
243
172
1.4*
map
table
Extreme events
Days with PRCP>1.15"
241
2.21"
65
27
2.4*
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
NDJFM
7381  by year
0.00"

No days with measureable SNOW during NDJFM over 1948-1997