SILVERTON, OR - COOP Northwest station 357823

357823 - SILVERTON, Oregon

Latitude
45° 0´N

Longitude
122° 46´W

Elevation
124 meters

10 nearest COOP Northwest stations

9 mi	NE :	MOLALLA 1 NW, OR
10 mi	N :	AURORA, OR
11 mi	NNE :	CANBY 2 S, OR
12 mi	N :	N WILLAMETTE EXP STN, OR
12 mi	NE :	COLTON, OR
12 mi	NNE :	CANBY 2 NE, OR
13 mi	NNW :	REX 1 S, OR
14 mi	NNE :	WEST LINN, OR
15 mi	NNE :	OREGON CITY, OR
17 mi	NE :	ESTACADA 2 SE, OR

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

	Total observations	%	NDJFM observations	%
TMAX	12810	70.1%	5257	69.5%
TMIN	12821	70.2%	5267	69.6%
PRCP	12807	70.1%	5258	69.5%
SNOW	12719	69.6%	5167	68.3%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	5257 by year	49.9°F	7.9°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>=61°F	390	0.29	81	32	2.5*	map	table
Extreme low events Days with TMAX<=38°F	434	-0.08	77	93	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>=61°F	390	0.89	143	11	13.0*	map	table
Extreme low events Days with TMAX<=38°F	434	-0.48	39	133	3.4*	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>=61°F	390	87	33	2.6*	map	table
Extreme low events Days with TMAX<=38°F	434	83	46	1.8*	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	5267 by year	35.7°F	7.5°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<=25°F	404	-0.04	72	82	1.1	map	table
Extreme high events Days with TMIN>=46°F	421	0.23	75	39	1.9*	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<=25°F	404	-0.54	43	124	2.9*	map	table
Extreme high events Days with TMIN>=46°F	421	0.55	107	14	7.6*	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<=25°F	404	66	48	1.4	map	table
Extreme high events Days with TMIN>=46°F	421	80	37	2.2*	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	5258 by year	0.21"		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"	3225	0.34"	0.11	591	447	1.3*	map	table
Extreme events Days with PRCP>0.53"	641	0.94"	0.12	117	76	1.5*	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"	3225	0.34"	-0.08	478	578	1.2*	map	table
Extreme events Days with PRCP>0.53"	641	0.94"	-0.19	78	120	1.5*	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"	3225	0.34"	645	414	1.6*	map	table
Extreme events Days with PRCP>0.53"	641	0.94"	127	95	1.3	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	5167 by year	0.03"		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"	55	2.57"	-0.23	11	12	1.1	map	table
Extreme events Days with SNOW>4.0"	7	7.23"	-0.62	1	2	2.0	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"	55	2.57"	-1.36	0	27	Inf*	map	table
Extreme events Days with SNOW>4.0"	7	7.23"	-1.23	0	3	Inf	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"	55	2.57"	14	7	2.0	map	table
Extreme events Days with SNOW>4.0"	7	7.23"	2	2	1.0	map	table

SNOW under 2 index extremes Help

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