SHEARWATER, AK - COOP Alaska station 508400

508400 - SHEARWATER, Alaska

Latitude
57° 21´N

Longitude
152° 55´W

Elevation
3 meters

Alaska

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10 nearest COOP Alaska stations

17 mi	NE :	CHINIAK, AK
19 mi	NNE :	KODIAK STATE USCG BASE, AK
19 mi	NNE :	KODIAK STATE USCG BASE, AK
24 mi	WSW :	OLD HARBOR, AK
26 mi	NNE :	OUZINKIE, AK
28 mi	WNW :	UGANIK BAY, AK
39 mi	W :	LARSEN BAY, AK
55 mi	W :	KARLUK LAKE, AK
55 mi	W :	KARLUK LAKE, AK
57 mi	W :	KARLUK RIVER, AK

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

	Total observations	%	NDJFM observations	%
TMAX	4327	23.7%	1763	23.3%
TMIN	4280	23.4%	1764	23.3%
PRCP	4382	24.0%	1766	23.4%
SNOW	2775	15.2%	867	11.5%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	1763 by year	37.9°F	6.2°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>=46°F	127	-0.34	16	26	1.6	map	table
Extreme low events Days with TMAX<=28°F	146	-0.24	26	37	1.4	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>=46°F	127	-0.12	15	27	1.8	map	table
Extreme low events Days with TMAX<=28°F	146	-0.34	12	23	1.9	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>=46°F	127	22	6	3.7*	map	table
Extreme low events Days with TMAX<=28°F	146	15	24	1.6	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	1764 by year	25.4°F	8.5°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<=11°F	136	-0.36	17	39	2.3*	map	table
Extreme high events Days with TMIN>=36°F	142	-0.64	5	36	7.2*	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<=11°F	136	-0.12	13	18	1.4	map	table
Extreme high events Days with TMIN>=36°F	142	0.70	32	5	6.4*	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<=11°F	136	12	30	2.5*	map	table
Extreme high events Days with TMIN>=36°F	142	26	0	Inf*	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	1766 by year	0.31"		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"	826	0.67"	-0.38	76	202	2.7*	map	table
Extreme events Days with PRCP>1.17"	165	2.05"	-0.56	11	48	4.4*	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"	826	0.67"	0.51	218	56	3.9*	map	table
Extreme events Days with PRCP>1.17"	165	2.05"	0.90	61	3	20.3*	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"	826	0.67"	88	60	1.5*	map	table
Extreme events Days with PRCP>1.17"	165	2.05"	21	4	5.2*	map	table

PRCP under 2 index extremes Help

Station table

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SNOW Help top of page

SNOW	observations	mean		Distribution	during extreme days of
NDJFM	867 by year	0.08"		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"	32	2.09"	-0.35	4	10	2.5	map	table
Extreme events Days with SNOW>3.5"	5	5.80"	-0.93	0	2	Inf	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"	32	2.09"	0.11	9	2	4.5	map	table
Extreme events Days with SNOW>3.5"	5	5.80"	0.56	2	0	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"	32	2.09"	0	0	NaN	map	table
Extreme events Days with SNOW>3.5"	5	5.80"	0	0	NaN	map	table

SNOW under 2 index extremes Help

Station table

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