SONNETTE 2 WNW, MT - COOP Northwest station 247740

247740 - SONNETTE 2 WNW, Montana

Latitude
45° 25´N

Longitude
105° 52´W

Elevation
1190 meters

10 nearest COOP Northwest stations

1 mi	SE :	SONNETTE, MT
3 mi	NE :	SONNETTE 4 N, MT
10 mi	SSE :	MOORHEAD 9 NE, MT
14 mi	E :	BROADUS, MT
14 mi	S :	MOORHEAD, MT
19 mi	NNE :	VOLBORG, MT
19 mi	SE :	BIDDLE 8 SW, MT
20 mi	SE :	BIDDLE, MT
26 mi	ESE :	BOYES, MT
27 mi	ENE :	POWDERVILLE, MT

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

	Total observations	%	NDJFM observations	%
TMAX	11429	62.6%	4792	63.4%
TMIN	11371	62.3%	4773	63.1%
PRCP	11334	62.1%	4551	60.2%
SNOW	8151	44.6%	2074	27.4%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	4792 by year	38.6°F	14.9°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>=58°F	388	0.49	91	23	4.0*	map	table
Extreme low events Days with TMAX<=13°F	333	-0.28	47	91	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>=58°F	388	0.54	111	22	5.0*	map	table
Extreme low events Days with TMAX<=13°F	333	-0.83	21	128	6.1*	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>=58°F	388	88	41	2.1*	map	table
Extreme low events Days with TMAX<=13°F	333	48	47	1.0	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	4773 by year	12.6°F	14.4°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<=-13°F	335	-0.30	51	95	1.9*	map	table
Extreme high events Days with TMIN>=30°F	370	0.54	95	22	4.3*	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<=-13°F	335	-0.81	22	131	6.0*	map	table
Extreme high events Days with TMIN>=30°F	370	0.43	81	21	3.9*	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<=-13°F	335	46	31	1.5	map	table
Extreme high events Days with TMIN>=30°F	370	75	57	1.3	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	4551 by year	0.02"		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"	538	0.17"	-0.10	74	103	1.4*	map	table
Extreme events Days with PRCP>0.25"	103	0.46"	0.10	16	16	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"	538	0.17"	-0.15	74	99	1.3	map	table
Extreme events Days with PRCP>0.25"	103	0.46"	-0.30	13	16	1.2	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"	538	0.17"	119	78	1.5*	map	table
Extreme events Days with PRCP>0.25"	103	0.46"	18	16	1.1	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	2074 by year	0.13"		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"	130	2.13"	-0.46	15	35	2.3*	map	table
Extreme events Days with SNOW>3.0"	18	6.17"	0.21	4	3	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"	130	2.13"	-0.45	11	32	2.9*	map	table
Extreme events Days with SNOW>3.0"	18	6.17"	-0.78	1	4	4.0	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"	130	2.13"	47	17	2.8*	map	table
Extreme events Days with SNOW>3.0"	18	6.17"	6	4	1.5	map	table

SNOW under 2 index extremes Help

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