DARBY, MT - COOP Northwest station 242221

242221 - DARBY, Montana

Latitude
46° 1´N

Longitude
114° 11´W

Elevation
1183 meters

10 nearest COOP Northwest stations

9 mi	N :	HAMILTON, MT
13 mi	N :	WESTERN AG RESEARCH CNTR, MT
21 mi	N :	STEVENSVILLE, MT
21 mi	WNW :	MOOSE CREEK RANCH, ID
22 mi	WNW :	MOOSE CREEK RANGER STN, ID
26 mi	NW :	POWELL, ID
31 mi	S :	CONNER, MT
32 mi	NNW :	LOLO HOT SPRINGS 2 NE, MT
34 mi	S :	CONNER 5 SE, MT
36 mi	N :	MISSOULA 2 WNW, MT

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

	Total observations	%	NDJFM observations	%
TMAX	17794	97.4%	7342	97.1%
TMIN	17779	97.3%	7330	96.9%
PRCP	17884	97.9%	7391	97.7%
SNOW	12012	65.8%	3835	50.7%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7342 by year	41.6°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>=58°F	564	0.26	110	51	2.2*	map	table
Extreme low events Days with TMAX<=23°F	495	0.06	113	104	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>=58°F	564	0.61	168	31	5.4*	map	table
Extreme low events Days with TMAX<=23°F	495	-0.69	37	176	4.8*	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>=58°F	564	110	68	1.6*	map	table
Extreme low events Days with TMAX<=23°F	495	48	84	1.8*	map	table

TMAX under 2 index extremes Help

Maps - choose one extreme:

TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7330 by year	21.5°F	11.8°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<=1°F	493	0.10	117	107	1.1	map	table
Extreme high events Days with TMIN>=35°F	582	0.18	112	71	1.6*	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<=1°F	493	-0.74	26	170	6.5*	map	table
Extreme high events Days with TMIN>=35°F	582	0.35	120	39	3.1*	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<=1°F	493	56	92	1.6*	map	table
Extreme high events Days with TMIN>=35°F	582	98	93	1.1	map	table

TMIN under 2 index extremes Help

Maps - choose one extreme:

PRCP (total liquid water equivalent) Help top of page

PRCP	observations	mean		Distribution	during extreme days of
NDJFM	7391 by year	0.04"		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"	2421	0.13"	0.01	393	392	1.0	map	table
Extreme events Days with PRCP>0.21"	475	0.40"	0.02	76	75	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"	2421	0.13"	-0.31	251	539	2.1*	map	table
Extreme events Days with PRCP>0.21"	475	0.40"	-0.35	41	98	2.4*	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"	2421	0.13"	313	445	1.4*	map	table
Extreme events Days with PRCP>0.21"	475	0.40"	59	99	1.7*	map	table

PRCP under 2 index extremes Help

Maps - choose one extreme:

SNOW Help top of page

SNOW	observations	mean		Distribution	during extreme days of
NDJFM	3835 by year	0.29"		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"	614	1.79"	-0.15	96	121	1.3	map	table
Extreme events Days with SNOW>2.5"	122	4.83"	0.03	27	24	1.1	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"	614	1.79"	-0.71	33	197	6.0*	map	table
Extreme events Days with SNOW>2.5"	122	4.83"	-0.70	4	41	10.2*	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"	614	1.79"	53	176	3.3*	map	table
Extreme events Days with SNOW>2.5"	122	4.83"	14	36	2.6*	map	table

SNOW under 2 index extremes Help

Maps - choose one extreme: