SHEMYA AFB, AK - COOP Alaska station 508419

508419 - SHEMYA AFB, Alaska

Latitude
52° 43´N

Longitude
185° 54´W

Elevation
37 meters

Alaska

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10 nearest COOP Alaska stations

40 mi	W :	ATTU, AK
233 mi	ESE :	AMCHITKA, AK
411 mi	E :	ADAK NAS, AK
499 mi	E :	ATKA, AK
705 mi	ENE :	ST PAUL ISLAND ARPT, AK
719 mi	ENE :	ST GEORGE ISLAND, AK
767 mi	E :	CAPE AFB, AK
767 mi	E :	CAPE AFB, AK
767 mi	E :	UMNAK AP, AK
817 mi	E :	DUTCH HARBOR, AK

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

	Total observations	%	NDJFM observations	%
TMAX	14201	77.8%	5988	79.2%
TMIN	14201	77.8%	5987	79.2%
PRCP	14252	78.0%	5974	79.0%
SNOW	13856	75.9%	5824	77.0%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	5988 by year	35.3°F	4.0°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>=41°F	559	0.16	78	54	1.4*	map	table
Extreme low events Days with TMAX<=29°F	428	0.20	75	48	1.6*	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>=41°F	559	-0.36	35	102	2.9*	map	table
Extreme low events Days with TMAX<=29°F	428	0.71	142	28	5.1*	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>=41°F	559	107	76	1.4*	map	table
Extreme low events Days with TMAX<=29°F	428	67	49	1.4	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	5987 by year	29.7°F	4.8°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	431	0.20	93	55	1.7*	map	table
Extreme high events Days with TMIN>=36°F	527	0.12	65	58	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	431	0.58	135	39	3.5*	map	table
Extreme high events Days with TMIN>=36°F	527	-0.54	26	133	5.1*	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<=22°F	431	84	46	1.8*	map	table
Extreme high events Days with TMIN>=36°F	527	89	91	1.0	map	table

TMIN under 2 index extremes Help

Station table

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PRCP (total liquid water equivalent) Help top of page

PRCP	observations	mean		Distribution	during extreme days of
NDJFM	5974 by year	0.09"		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"	4270	0.12"	0.00	714	715	1.0	map	table
Extreme events Days with PRCP>0.18"	812	0.40"	0.07	141	109	1.3	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"	4270	0.12"	0.02	711	693	1.0	map	table
Extreme events Days with PRCP>0.18"	812	0.40"	-0.26	85	171	2.0*	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"	4270	0.12"	774	505	1.5*	map	table
Extreme events Days with PRCP>0.18"	812	0.40"	141	103	1.4*	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	5824 by year	0.44"		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"	3071	0.84"	0.03	541	503	1.1	map	table
Extreme events Days with SNOW>1.2"	582	2.53"	0.03	101	79	1.3	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"	3071	0.84"	0.16	612	432	1.4*	map	table
Extreme events Days with SNOW>1.2"	582	2.53"	0.13	114	91	1.3	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"	3071	0.84"	572	361	1.6*	map	table
Extreme events Days with SNOW>1.2"	582	2.53"	102	73	1.4*	map	table

SNOW under 2 index extremes Help

Station table

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