ALTADENA, CA - COOP Southwest station 040144

040144 - ALTADENA, California

Latitude
34° 11´N

Longitude
118° 8´W

Elevation
344 meters

COOP Southwest

California

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10 nearest COOP Southwest stations

1 mi	SSW :	PASADENA, CA
2 mi	NW :	ARROYO SECO RANGER STN, CA
3 mi	ESE :	SIERRA MADRE HENSZEY, CA
3 mi	NNE :	CAMP HILL OPIDS 57B, CA
3 mi	NNE :	OPIDS CAMP FC 57 B E, CA
3 mi	NE :	MT WILSON NO 2, CA
4 mi	SSE :	SAN GABRIEL FIRE DEPT, CA
4 mi	ENE :	HOEGEES FC 60 A, CA
4 mi	WNW :	LA CRESCENTA FC 251C, CA
4 mi	ENE :	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:

SNOW Help top of page

SNOW	observations	mean
NDJFM	7381 by year	0.00"

No days with measureable SNOW during NDJFM over 1948-1997