HERON 2 NW, MT - COOP Northwest station 244084

244084 - HERON 2 NW, Montana

Latitude
48° 4´N

Longitude
115° 59´W

Elevation
683 meters

10 nearest COOP Northwest stations

17 mi	N :	TROY, MT
19 mi	NE :	LIBBY 1 NE RS, MT
21 mi	W :	CABINET GORGE, ID
23 mi	NE :	LIBBY DAM, MT
23 mi	NE :	LIBBY DAM BASE, MT
24 mi	W :	CLARK FORK 1 ENE, ID
26 mi	NE :	WARLAND RANGER STN, MT
27 mi	N :	TROY 18 N, MT
31 mi	NE :	WARLAND 12 N, MT
33 mi	NNE :	YAAK, MT

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

	Total observations	%	NDJFM observations	%
TMAX	18181	99.6%	7558	99.9%
TMIN	18182	99.6%	7554	99.9%
PRCP	18208	99.7%	7560	100.0%
SNOW	18156	99.4%	7506	99.2%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7558 by year	37.1°F	9.2°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>=50°F	593	0.12	109	76	1.4*	map	table
Extreme low events Days with TMAX<=23°F	552	-0.02	117	123	1.1	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>=50°F	593	0.70	185	29	6.4*	map	table
Extreme low events Days with TMAX<=23°F	552	-1.05	12	250	20.8*	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>=50°F	593	119	68	1.8*	map	table
Extreme low events Days with TMAX<=23°F	552	57	91	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	7554 by year	23.0°F	10.8°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<=4°F	533	-0.08	115	122	1.1	map	table
Extreme high events Days with TMIN>=34°F	598	0.05	79	76	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<=4°F	533	-0.96	13	205	15.8*	map	table
Extreme high events Days with TMIN>=34°F	598	0.47	141	27	5.2*	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<=4°F	533	49	110	2.2*	map	table
Extreme high events Days with TMIN>=34°F	598	115	94	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	7560 by year	0.13"		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"	3996	0.25"	0.03	667	630	1.1	map	table
Extreme events Days with PRCP>0.40"	769	0.70"	0.05	126	99	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"	3996	0.25"	-0.21	493	791	1.6*	map	table
Extreme events Days with PRCP>0.40"	769	0.70"	-0.29	68	154	2.3*	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"	3996	0.25"	622	697	1.1*	map	table
Extreme events Days with PRCP>0.40"	769	0.70"	103	146	1.4*	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	7506 by year	0.60"		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"	2186	2.06"	0.02	387	373	1.0	map	table
Extreme events Days with SNOW>3.1"	433	5.67"	-0.07	71	82	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"	2186	2.06"	-0.61	151	661	4.4*	map	table
Extreme events Days with SNOW>3.1"	433	5.67"	-1.00	12	182	15.2*	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"	2186	2.06"	319	420	1.3*	map	table
Extreme events Days with SNOW>3.1"	433	5.67"	39	106	2.7*	map	table

SNOW under 2 index extremes Help

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