BOCA, CA - COOP Southwest station 040931

040931 - BOCA, California

Latitude
39° 23´N

Longitude
120° 6´W

Elevation
1699 meters

10 nearest COOP Southwest stations

3 mi	SW :	TRUCKEE RS, CA
5 mi	WNW :	SAGEHEN CREEK, CA
5 mi	WSW :	DONNER MEMORIAL ST PK, CA
8 mi	WSW :	DONNER SUMMIT, CA
9 mi	SSW :	SQUAW VALLEY, CA
9 mi	WSW :	SNOW LABORATORY CENTRAL SIERR, CA
9 mi	WSW :	SODA SPRINGS 1 E, CA
9 mi	S :	TAHOE CITY, CA
10 mi	WSW :	SODA SPRINGS, CA
12 mi	NW :	SIERRAVILLE R S, CA

Weather variables Help
Click a weather variable name to jump down to those statistics.

	Total observations	%	NDJFM observations	%
TMAX	17882	97.9%	7410	98.0%
TMIN	17877	97.9%	7404	97.9%
PRCP	17871	97.9%	7400	97.8%
SNOW	17861	97.8%	7396	97.8%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7410 by year	45.7°F	10.4°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>=62°F	528	0.09	76	60	1.3	map	table
Extreme low events Days with TMAX<=31°F	562	0.21	122	76	1.6*	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>=62°F	528	0.52	142	23	6.2*	map	table
Extreme low events Days with TMAX<=31°F	562	-1.00	21	245	11.7*	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>=62°F	528	67	71	1.1	map	table
Extreme low events Days with TMAX<=31°F	562	69	135	2.0*	map	table

TMAX under 2 index extremes Help

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7404 by year	14.2°F	12.0°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	539	0.10	121	104	1.2	map	table
Extreme high events Days with TMIN>=30°F	594	-0.14	77	117	1.5*	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	539	-1.05	15	240	16.0*	map	table
Extreme high events Days with TMIN>=30°F	594	0.11	103	70	1.5*	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	539	93	126	1.4	map	table
Extreme high events Days with TMIN>=30°F	594	93	103	1.1	map	table

TMIN under 2 index extremes Help

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PRCP (total liquid water equivalent) Help top of page

PRCP	observations	mean		Distribution	during extreme days of
NDJFM	7400 by year	0.11"		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"	1753	0.46"	-0.06	274	335	1.2*	map	table
Extreme events Days with PRCP>0.78"	347	1.29"	-0.05	50	65	1.3	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"	1753	0.46"	-0.29	218	406	1.9*	map	table
Extreme events Days with PRCP>0.78"	347	1.29"	-0.45	34	96	2.8*	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"	1753	0.46"	315	313	1.0	map	table
Extreme events Days with PRCP>0.78"	347	1.29"	62	52	1.2	map	table

PRCP under 2 index extremes Help

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SNOW Help top of page

SNOW	observations	mean		Distribution	during extreme days of
NDJFM	7396 by year	0.63"		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"	1021	4.56"	-0.03	171	200	1.2	map	table
Extreme events Days with SNOW>7.0"	195	12.17"	0.27	41	23	1.8*	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"	1021	4.56"	-0.53	99	310	3.1*	map	table
Extreme events Days with SNOW>7.0"	195	12.17"	-1.17	3	99	33.0*	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"	1021	4.56"	197	180	1.1	map	table
Extreme events Days with SNOW>7.0"	195	12.17"	36	34	1.1	map	table

SNOW under 2 index extremes Help

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