CHIEF JOSEPH DAM, WA - COOP Northwest station 451400

451400 - CHIEF JOSEPH DAM, Washington

Latitude
48° 0´N

Longitude
119° 39´W

Elevation
250 meters

10 nearest COOP Northwest stations

12 mi	N :	MALOTT, WA
15 mi	N :	OKANOGAN, WA
18 mi	N :	OMAK, WA
20 mi	N :	OMAK 4 N, WA
23 mi	N :	CONCONULLY, WA
24 mi	NE :	DISAUTEL 9 NE, WA
27 mi	NE :	LOST CREEK AENEAS, WA
27 mi	N :	UPPER PINE CREEK, WA
28 mi	N :	TONASKET 11 WSW, WA
28 mi	N :	UPPER PINE CREEK 2, WA

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

	Total observations	%	NDJFM observations	%
TMAX	17256	94.5%	7146	94.5%
TMIN	17282	94.6%	7162	94.7%
PRCP	17281	94.6%	7137	94.4%
SNOW	13949	76.4%	5086	67.2%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7146 by year	40.9°F	11.5°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>=58°F	535	0.25	116	68	1.7*	map	table
Extreme low events Days with TMAX<=24°F	505	-0.19	85	127	1.5*	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>=58°F	535	0.41	132	37	3.6*	map	table
Extreme low events Days with TMAX<=24°F	505	-1.06	16	242	15.1*	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>=58°F	535	109	48	2.3*	map	table
Extreme low events Days with TMAX<=24°F	505	57	93	1.6*	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	7162 by year	25.5°F	10.2°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<=8°F	499	-0.14	89	124	1.4	map	table
Extreme high events Days with TMIN>=38°F	517	0.16	80	50	1.6*	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<=8°F	499	-1.01	17	220	12.9*	map	table
Extreme high events Days with TMIN>=38°F	517	0.52	133	27	4.9*	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<=8°F	499	46	102	2.2*	map	table
Extreme high events Days with TMIN>=38°F	517	118	69	1.7*	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	7137 by year	0.04"		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"	1858	0.15"	-0.04	282	310	1.1	map	table
Extreme events Days with PRCP>0.25"	358	0.43"	-0.14	43	62	1.4	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"	1858	0.15"	0.08	328	278	1.2*	map	table
Extreme events Days with PRCP>0.25"	358	0.43"	0.28	88	41	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"	1858	0.15"	408	287	1.4*	map	table
Extreme events Days with PRCP>0.25"	358	0.43"	69	64	1.1	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	5086 by year	0.16"		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"	381	2.10"	0.02	64	62	1.0	map	table
Extreme events Days with SNOW>3.3"	76	5.12"	-0.11	13	17	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"	381	2.10"	-0.17	43	73	1.7*	map	table
Extreme events Days with SNOW>3.3"	76	5.12"	-0.20	8	15	1.9	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"	381	2.10"	53	77	1.5	map	table
Extreme events Days with SNOW>3.3"	76	5.12"	10	17	1.7	map	table

SNOW under 2 index extremes Help

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