POMEROY, WA - COOP Northwest station 456610

456610 - POMEROY, Washington

Latitude
46° 28´N

Longitude
117° 35´W

Elevation
579 meters

10 nearest COOP Northwest stations

9 mi	NNE :	LOWER GRANITE DAM, WA
9 mi	NE :	WAWAWAI, WA
13 mi	SW :	DAYTON 9 SE, WA
15 mi	SE :	ASOTIN 14 SW, WA
15 mi	ESE :	CLARKSTON HEIGHTS, WA
16 mi	E :	LEWISTON, ID
16 mi	NE :	PULLMAN 2 E, WA
16 mi	NE :	PULLMAN EXP STN, WA
16 mi	E :	LEWISTON WATER PLANT, ID
17 mi	ESE :	LEWISTON NEZ PERCE COUNTY ARP, ID

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

	Total observations	%	NDJFM observations	%
TMAX	17427	95.4%	7095	93.8%
TMIN	17411	95.3%	7065	93.4%
PRCP	17650	96.6%	7182	95.0%
SNOW	16559	90.7%	6276	83.0%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7095 by year	45.7°F	11.1°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>=60°F	648	0.20	127	70	1.8*	map	table
Extreme low events Days with TMAX<=28°F	514	-0.08	95	118	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>=60°F	648	0.56	179	33	5.4*	map	table
Extreme low events Days with TMAX<=28°F	514	-0.67	48	188	3.9*	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>=60°F	648	113	94	1.2	map	table
Extreme low events Days with TMAX<=28°F	514	63	81	1.3	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	7065 by year	28.7°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<=12°F	528	-0.12	100	127	1.3	map	table
Extreme high events Days with TMIN>=42°F	487	0.20	91	56	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<=12°F	528	-0.86	26	204	7.8*	map	table
Extreme high events Days with TMIN>=42°F	487	0.49	134	33	4.1*	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<=12°F	528	62	102	1.6*	map	table
Extreme high events Days with TMIN>=42°F	487	85	68	1.2	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	7182 by year	0.06"		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"	2470	0.18"	-0.04	389	430	1.1	map	table
Extreme events Days with PRCP>0.28"	494	0.50"	0.06	87	73	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"	2470	0.18"	-0.15	320	450	1.4*	map	table
Extreme events Days with PRCP>0.28"	494	0.50"	-0.16	64	79	1.2	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"	2470	0.18"	413	457	1.1	map	table
Extreme events Days with PRCP>0.28"	494	0.50"	75	99	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	6276 by year	0.07"		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"	196	2.12"	-0.19	28	43	1.5	map	table
Extreme events Days with SNOW>3.0"	36	5.72"	-0.10	6	7	1.2	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"	196	2.12"	-1.15	2	86	43.0*	map	table
Extreme events Days with SNOW>3.0"	36	5.72"	-1.54	0	20	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"	196	2.12"	29	39	1.3	map	table
Extreme events Days with SNOW>3.0"	36	5.72"	7	12	1.7	map	table

SNOW under 2 index extremes Help

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