ARROWROCK DAM, ID - HCND station 100448

100448 - ARROWROCK DAM, Idaho

Latitude
43° 37´N

Longitude
115° 55´W

Elevation
3275 feet

10 nearest HCND stations

39 mi	W :	CALDWELL, ID
55 mi	SSE :	GLENNS FERRY, ID
61 mi	WNW :	PAYETTE, ID
71 mi	WNW :	VALE, OR
76 mi	NNW :	CAMBRIDGE, ID
85 mi	WSW :	DANNER, OR
93 mi	SE :	JEROME, ID
96 mi	N :	NEW MEADOWS RS, ID
104 mi	NE :	CHALLIS, ID
110 mi	SE :	HOLLISTER, ID

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

	Total observations	%	NDJFM observations	%
TMAX	17127	93.8%	7053	93.3%
TMIN	17459	95.6%	7179	94.9%
PRCP	16544	90.6%	6630	87.7%
SNOW	15997	87.6%	6214	82.2%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7053 by year	40.7°F	10.5°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>=56°F	538	0.13	81	53	1.5*	map	table
Extreme low events Days with TMAX<=25°F	477	0.12	118	94	1.3	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>=56°F	538	0.62	160	21	7.6*	map	table
Extreme low events Days with TMAX<=25°F	477	-0.55	45	152	3.4*	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>=56°F	538	70	70	1.0	map	table
Extreme low events Days with TMAX<=25°F	477	45	99	2.2*	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7179 by year	24.4°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<=8°F	500	0.14	121	88	1.4	map	table
Extreme high events Days with TMIN>=36°F	517	-0.01	64	63	1.0	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<=8°F	500	-0.71	35	179	5.1*	map	table
Extreme high events Days with TMIN>=36°F	517	0.36	117	25	4.7*	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<=8°F	500	28	134	4.8*	map	table
Extreme high events Days with TMIN>=36°F	517	108	61	1.8*	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	6630 by year	0.10"		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"	2596	0.24"	-0.01	453	458	1.0	map	table
Extreme events Days with PRCP>0.40"	493	0.72"	-0.01	83	84	1.0	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"	2596	0.24"	-0.26	289	526	1.8*	map	table
Extreme events Days with PRCP>0.40"	493	0.72"	-0.15	55	82	1.5*	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"	2596	0.24"	406	465	1.1*	map	table
Extreme events Days with PRCP>0.40"	493	0.72"	72	95	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	6214 by year	0.33"		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"	892	2.30"	-0.01	171	174	1.0	map	table
Extreme events Days with SNOW>3.5"	175	5.81"	0.06	41	33	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"	892	2.30"	-0.70	48	298	6.2*	map	table
Extreme events Days with SNOW>3.5"	175	5.81"	-0.99	5	69	13.8*	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"	892	2.30"	128	177	1.4*	map	table
Extreme events Days with SNOW>3.5"	175	5.81"	16	59	3.7*	map	table

SNOW under 2 index extremes Help

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