CHOTEAU AP, MT - HCND station 241737

241737 - CHOTEAU AP, Montana

Latitude
47° 49´N

Longitude
112° 10´W

Elevation
3945 feet

10 nearest HCND stations

25 mi	SSW :	AUGUSTA, MT
35 mi	N :	VALIER, MT
46 mi	SSE :	CASCADE 5S, MT
55 mi	N :	CUT BANK FAA AP, MT
84 mi	S :	HELENA WSO, MT
96 mi	WSW :	SAINT IGNATIUS, MT
102 mi	WNW :	KALISPELL WSO AP, MT
117 mi	ESE :	MOCCASIN EXPERIMENT STATION, MT
119 mi	ENE :	FORT ASSINNIBOINE, MT
143 mi	WNW :	FORTINE 1N, MT

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

	Total observations	%	NDJFM observations	%
TMAX	17650	96.6%	7301	96.5%
TMIN	17597	96.4%	7256	95.9%
PRCP	12697	69.5%	5062	66.9%
SNOW	12292	67.3%	5086	67.2%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7301 by year	39.7°F	16.0°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>=59°F	535	0.32	100	38	2.6*	map	table
Extreme low events Days with TMAX<=10°F	510	-0.41	76	154	2.0*	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>=59°F	535	0.98	217	15	14.5*	map	table
Extreme low events Days with TMAX<=10°F	510	-1.16	18	238	13.2*	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>=59°F	535	88	76	1.2	map	table
Extreme low events Days with TMAX<=10°F	510	55	99	1.8*	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7256 by year	17.3°F	16.2°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<=-12°F	495	-0.40	78	153	2.0*	map	table
Extreme high events Days with TMIN>=37°F	552	0.34	119	43	2.8*	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<=-12°F	495	-1.29	7	256	36.6*	map	table
Extreme high events Days with TMIN>=37°F	552	0.72	177	23	7.7*	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<=-12°F	495	51	93	1.8*	map	table
Extreme high events Days with TMIN>=37°F	552	94	89	1.1	map	table

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PRCP (total liquid water equivalent) Help top of page

PRCP	observations	mean		Distribution	during extreme days of
NDJFM	5062 by year	0.01"		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"	945	0.08"	-0.11	147	183	1.2	map	table
Extreme events Days with PRCP>0.11"	188	0.22"	-0.13	28	39	1.4	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"	945	0.08"	-0.55	76	267	3.5*	map	table
Extreme events Days with PRCP>0.11"	188	0.22"	-0.46	18	42	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"	945	0.08"	124	162	1.3*	map	table
Extreme events Days with PRCP>0.11"	188	0.22"	28	21	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	5086 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"	846	1.74"	-0.17	128	179	1.4*	map	table
Extreme events Days with SNOW>3.0"	101	4.88"	-0.07	17	17	1.0	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"	846	1.74"	-0.67	52	262	5.0*	map	table
Extreme events Days with SNOW>3.0"	101	4.88"	-0.74	4	27	6.8*	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"	846	1.74"	109	143	1.3*	map	table
Extreme events Days with SNOW>3.0"	101	4.88"	15	12	1.2	map	table

SNOW under 2 index extremes Help

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