ELLISTON, MT - COOP Northwest station 242738

242738 - ELLISTON, Montana

Latitude
46° 34´N

Longitude
112° 26´W

Elevation
1547 meters

10 nearest COOP Northwest stations

4 mi	E :	MACDONALD OASS, MT
6 mi	ENE :	AUSTIN 1 W, MT
6 mi	ESE :	RIMINI, MT
8 mi	E :	RIMINI 4 NE, MT
8 mi	ESE :	CHESSMAN RESERVOIR, MT
8 mi	NNE :	MARYSVILLE 1 SW, MT
8 mi	NNE :	MARYSVILLE 3, MT
10 mi	E :	UNIONVILLE, MT
11 mi	E :	HELENA, MT
11 mi	SW :	DEER LODGE, MT

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

	Total observations	%	NDJFM observations	%
TMAX	9421	51.6%	3864	51.1%
TMIN	9389	51.4%	3863	51.1%
PRCP	9486	51.9%	3891	51.4%
SNOW	9201	50.4%	3748	49.6%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	3864 by year	35.5°F	11.9°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>=51°F	297	0.07	39	23	1.7*	map	table
Extreme low events Days with TMAX<=17°F	270	-0.40	45	85	1.9*	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>=51°F	297	0.41	70	19	3.7*	map	table
Extreme low events Days with TMAX<=17°F	270	-1.09	5	112	22.4*	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>=51°F	297	36	63	1.8*	map	table
Extreme low events Days with TMAX<=17°F	270	41	59	1.4	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	3863 by year	13.3°F	13.9°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	268	-0.44	44	88	2.0*	map	table
Extreme high events Days with TMIN>=30°F	337	-0.12	36	55	1.5	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	268	-1.06	8	116	14.5*	map	table
Extreme high events Days with TMIN>=30°F	337	0.28	68	24	2.8*	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	268	43	53	1.2	map	table
Extreme high events Days with TMIN>=30°F	337	31	64	2.1*	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	3891 by year	0.03"		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"	1149	0.10"	-0.19	157	229	1.5*	map	table
Extreme events Days with PRCP>0.15"	205	0.27"	-0.24	33	53	1.6	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"	1149	0.10"	-0.43	89	278	3.1*	map	table
Extreme events Days with PRCP>0.15"	205	0.27"	-0.65	12	63	5.2*	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"	1149	0.10"	160	223	1.4*	map	table
Extreme events Days with PRCP>0.15"	205	0.27"	21	41	2.0*	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	3748 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"	812	2.04"	-0.21	120	171	1.4*	map	table
Extreme events Days with SNOW>3.0"	129	5.09"	-0.25	26	36	1.4	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"	812	2.04"	-0.57	50	235	4.7*	map	table
Extreme events Days with SNOW>3.0"	129	5.09"	-0.80	5	48	9.6*	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"	812	2.04"	119	151	1.3	map	table
Extreme events Days with SNOW>3.0"	129	5.09"	13	32	2.5*	map	table

SNOW under 2 index extremes Help

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