COULEE DAM 1 SW, WA - COOP Northwest station 451767

451767 - COULEE DAM 1 SW, Washington

Latitude
47° 57´N

Longitude
119° 0´W

Elevation
518 meters

10 nearest COOP Northwest stations

11 mi	SSW :	HARTLINE, WA
19 mi	WSW :	MANSFIELD, WA
22 mi	S :	WILSON CREEK, WA
23 mi	WSW :	MANSFIELD 7 W, WA
25 mi	WSW :	WITHROW, WA
29 mi	ESE :	WILBUR, WA
31 mi	SSW :	EPHRATA AP FCWOS, WA
31 mi	SSW :	EPHRATA, WA
34 mi	S :	RUFF 3 SW, WA
35 mi	NNW :	CHIEF JOSEPH DAM, WA

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

	Total observations	%	NDJFM observations	%
TMAX	17944	98.3%	7457	98.6%
TMIN	17970	98.4%	7468	98.7%
PRCP	17952	98.3%	7456	98.6%
SNOW	16794	92.0%	6342	83.9%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7457 by year	39.7°F	11.0°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	581	0.17	118	76	1.6*	map	table
Extreme low events Days with TMAX<=23°F	539	-0.10	108	127	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	581	0.60	171	27	6.3*	map	table
Extreme low events Days with TMAX<=23°F	539	-0.97	22	243	11.0*	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	581	110	58	1.9*	map	table
Extreme low events Days with TMAX<=23°F	539	57	90	1.6*	map	table

TMAX under 2 index extremes Help

Maps - choose one extreme:

TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7468 by year	26.6°F	9.7°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<=10°F	532	-0.02	113	124	1.1	map	table
Extreme high events Days with TMIN>=39°F	499	0.16	75	53	1.4*	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<=10°F	532	-1.12	16	254	15.9*	map	table
Extreme high events Days with TMIN>=39°F	499	0.56	137	21	6.5*	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<=10°F	532	50	97	1.9*	map	table
Extreme high events Days with TMIN>=39°F	499	113	75	1.5*	map	table

TMIN under 2 index extremes Help

Maps - choose one extreme:

PRCP (total liquid water equivalent) Help top of page

PRCP	observations	mean		Distribution	during extreme days of
NDJFM	7456 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"	2517	0.11"	0.01	411	386	1.1	map	table
Extreme events Days with PRCP>0.19"	482	0.33"	-0.10	69	81	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"	2517	0.11"	0.06	433	391	1.1	map	table
Extreme events Days with PRCP>0.19"	482	0.33"	0.18	92	64	1.4*	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"	2517	0.11"	454	433	1.0	map	table
Extreme events Days with PRCP>0.19"	482	0.33"	74	84	1.1	map	table

PRCP under 2 index extremes Help

Maps - choose one extreme:

SNOW Help top of page

SNOW	observations	mean		Distribution	during extreme days of
NDJFM	6342 by year	0.11"		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"	461	1.52"	-0.26	69	111	1.6*	map	table
Extreme events Days with SNOW>2.5"	74	3.97"	-0.23	10	15	1.5	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"	461	1.52"	-0.64	29	158	5.4*	map	table
Extreme events Days with SNOW>2.5"	74	3.97"	-0.83	2	25	12.5*	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"	461	1.52"	47	113	2.4*	map	table
Extreme events Days with SNOW>2.5"	74	3.97"	8	15	1.9	map	table

SNOW under 2 index extremes Help

Maps - choose one extreme: