CHEWELAH, WA - COOP Northwest station 451395

451395 - CHEWELAH, Washington

Latitude
48° 17´N

Longitude
117° 43´W

Elevation
509 meters

10 nearest COOP Northwest stations

12 mi	NNW :	COLVILLE AIRPORT, WA
12 mi	NNW :	COLVILLE, WA
13 mi	N :	COLVILLE BASIC, WA
19 mi	ESE :	NEWPORT, WA
26 mi	NNE :	METALINE FALLS, WA
26 mi	N :	NORTHPORT, WA
31 mi	NNE :	BOUNDARY DAM, WA
31 mi	NNE :	BOUNDARY DAM 1 W, WA
32 mi	W :	INCHELIUM 2 NW, WA
41 mi	S :	DEER PARK 2 E, WA

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

	Total observations	%	NDJFM observations	%
TMAX	17956	98.3%	7425	98.2%
TMIN	17961	98.3%	7429	98.2%
PRCP	17911	98.1%	7373	97.5%
SNOW	17901	98.0%	7358	97.3%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7425 by year	39.6°F	10.8°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>=55°F	577	0.17	113	77	1.5*	map	table
Extreme low events Days with TMAX<=23°F	495	-0.06	94	112	1.2	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>=55°F	577	0.66	182	25	7.3*	map	table
Extreme low events Days with TMAX<=23°F	495	-1.02	12	223	18.6*	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>=55°F	577	118	49	2.4*	map	table
Extreme low events Days with TMAX<=23°F	495	49	86	1.8*	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7429 by year	22.2°F	12.1°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<=1°F	502	-0.01	107	111	1.0	map	table
Extreme high events Days with TMIN>=35°F	560	0.04	76	79	1.0	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<=1°F	502	-0.98	15	211	14.1*	map	table
Extreme high events Days with TMIN>=35°F	560	0.54	159	32	5.0*	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<=1°F	502	34	99	2.9*	map	table
Extreme high events Days with TMIN>=35°F	560	127	82	1.5*	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	7373 by year	0.08"		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"	2862	0.20"	0.01	460	451	1.0	map	table
Extreme events Days with PRCP>0.31"	568	0.55"	0.02	104	92	1.1	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"	2862	0.20"	-0.07	422	494	1.2*	map	table
Extreme events Days with PRCP>0.31"	568	0.55"	-0.06	82	90	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"	2862	0.20"	491	503	1.0	map	table
Extreme events Days with PRCP>0.31"	568	0.55"	106	114	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	7358 by year	0.29"		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"	1158	1.83"	-0.11	186	214	1.2	map	table
Extreme events Days with SNOW>3.0"	175	5.12"	-0.05	31	29	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"	1158	1.83"	-0.57	96	363	3.8*	map	table
Extreme events Days with SNOW>3.0"	175	5.12"	-0.95	7	72	10.3*	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"	1158	1.83"	140	225	1.6*	map	table
Extreme events Days with SNOW>3.0"	175	5.12"	28	34	1.2	map	table

SNOW under 2 index extremes Help

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