COPCO NO 1 DAM, CA - COOP Southwest station 041990

041990 - COPCO NO 1 DAM, California

Latitude
41° 59´N

Longitude
122° 20´W

Elevation
824 meters

10 nearest COOP Southwest stations

9 mi	SW :	BETTS RANCH, CA
9 mi	SSW :	MONTAGUE SISKIYOU COUNTY AP, CA
12 mi	SSW :	MONTAGUE YREKA MUNI AP, CA
12 mi	SE :	MOUNT HEBRON RNG STN, CA
14 mi	SW :	YREKA RANGER STN, CA
15 mi	SW :	YREKA, CA
15 mi	SSE :	GRASS LAKE HWY MNTC ST, CA
17 mi	WSW :	OAK KNOLL W C, CA
18 mi	WSW :	OAK KNOLL R S NO 2, CA
20 mi	SW :	FORT JONES 6 ESE, CA

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

TMAX top of page

Data not shown:
Less than 5% of days have TMAX observations 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

PRCP (total liquid water equivalent) Help top of page

PRCP	observations	mean		Distribution	during extreme days of
NDJFM	5806 by year	0.09"		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"	2274	0.23"	0.06	385	342	1.1	map	table
Extreme events Days with PRCP>0.37"	444	0.71"	0.08	71	59	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"	2274	0.23"	-0.08	335	411	1.2*	map	table
Extreme events Days with PRCP>0.37"	444	0.71"	-0.11	67	75	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"	2274	0.23"	451	281	1.6*	map	table
Extreme events Days with PRCP>0.37"	444	0.71"	78	63	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	5807 by year	0.12"		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"	390	1.85"	0.11	72	60	1.2	map	table
Extreme events Days with SNOW>3.0"	58	5.36"	-0.02	13	14	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"	390	1.85"	-0.88	15	150	10.0*	map	table
Extreme events Days with SNOW>3.0"	58	5.36"	-1.23	1	27	27.0*	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"	390	1.85"	77	62	1.2	map	table
Extreme events Days with SNOW>3.0"	58	5.36"	11	6	1.8	map	table

SNOW under 2 index extremes Help

Maps - choose one extreme: