MC MILLIN RESERVOIR, WA - COOP Northwest station 455224

455224 - MC MILLIN RESERVOIR, Washington

Latitude
47° 8´N

Longitude
122° 16´W

Elevation
177 meters

10 nearest COOP Northwest stations

3 mi	NW :	PUYALLUP 2 W EXP STN, WA
3 mi	NW :	PUYALLUP 3 W, WA
5 mi	SSE :	ORTING 4 S, WA
6 mi	W :	MC CHORD AFB, WA
6 mi	NW :	TACOMA 1, WA
7 mi	NW :	TACOMA CITY HALL, WA
8 mi	E :	BUCKLEY 1 NE, WA
9 mi	SE :	FAIRFAX, WA
11 mi	N :	KENT, WA
14 mi	N :	SEATTLE SEATTLE-TACOMA INTL A, WA

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

	Total observations	%	NDJFM observations	%
TMAX	18227	99.8%	7563	100.0%
TMIN	18214	99.7%	7558	99.9%
PRCP	18228	99.8%	7561	100.0%
SNOW	17971	98.4%	7306	96.6%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7563 by year	48.0°F	7.5°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>=59°F	539	0.02	92	77	1.2	map	table
Extreme low events Days with TMAX<=37°F	615	-0.12	109	135	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>=59°F	539	1.00	218	7	31.1*	map	table
Extreme low events Days with TMAX<=37°F	615	-0.86	39	258	6.6*	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>=59°F	539	91	62	1.5*	map	table
Extreme low events Days with TMAX<=37°F	615	81	123	1.5*	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	7558 by year	33.3°F	7.6°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<=22°F	523	0.04	113	108	1.0	map	table
Extreme high events Days with TMIN>=44°F	521	0.05	74	66	1.1	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<=22°F	523	-0.97	13	212	16.3*	map	table
Extreme high events Days with TMIN>=44°F	521	0.65	148	15	9.9*	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<=22°F	523	60	111	1.8*	map	table
Extreme high events Days with TMIN>=44°F	521	85	72	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	7561 by year	0.17"		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"	4750	0.28"	0.00	765	769	1.0	map	table
Extreme events Days with PRCP>0.44"	948	0.78"	0.05	165	134	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"	4750	0.28"	-0.11	675	854	1.3*	map	table
Extreme events Days with PRCP>0.44"	948	0.78"	-0.05	132	143	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"	4750	0.28"	747	856	1.1*	map	table
Extreme events Days with PRCP>0.44"	948	0.78"	142	170	1.2	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	7306 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"	244	1.95"	-0.40	33	61	1.8*	map	table
Extreme events Days with SNOW>3.0"	40	5.47"	-0.57	5	12	2.4	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"	244	1.95"	-1.53	0	149	Inf*	map	table
Extreme events Days with SNOW>3.0"	40	5.47"	-1.58	0	24	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"	244	1.95"	29	63	2.2*	map	table
Extreme events Days with SNOW>3.0"	40	5.47"	6	8	1.3	map	table

SNOW under 2 index extremes Help

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