CHINOOK, MT - COOP Northwest station 241722

241722 - CHINOOK, Montana

Latitude
48° 35´N

Longitude
109° 14´W

Elevation
715 meters

10 nearest COOP Northwest stations

9 mi	N :	CHINOOK 15 N, MT
12 mi	W :	HAVRE, MT
12 mi	SSE :	CLEVELAND 5 ENE, MT
12 mi	SSW :	LLOYD, MT
13 mi	S :	CLEVELAND, MT
13 mi	WNW :	HAVRE 14 N, MT
15 mi	W :	HAVRE CITY-COUNTY ARPT, MT
16 mi	WSW :	FORT ASSINNIBOINE, MT
21 mi	SW :	ROCKY BOY, MT
24 mi	SSW :	WARRICK 2 NW, MT

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

	Total observations	%	NDJFM observations	%
TMAX	17282	94.6%	7178	94.9%
TMIN	17261	94.5%	7180	94.9%
PRCP	17461	95.6%	7226	95.5%
SNOW	14349	78.6%	4833	63.9%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7178 by year	34.8°F	18.2°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>=59°F	519	0.31	102	41	2.5*	map	table
Extreme low events Days with TMAX<=3°F	485	-0.35	73	136	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>=59°F	519	0.69	153	18	8.5*	map	table
Extreme low events Days with TMAX<=3°F	485	-1.18	14	239	17.1*	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>=59°F	519	97	95	1.0	map	table
Extreme low events Days with TMAX<=3°F	485	51	90	1.8*	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7180 by year	10.2°F	16.9°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<=-19°F	496	-0.28	82	125	1.5*	map	table
Extreme high events Days with TMIN>=32°F	499	0.29	106	49	2.2*	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<=-19°F	496	-1.00	15	223	14.9*	map	table
Extreme high events Days with TMIN>=32°F	499	0.36	99	30	3.3*	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<=-19°F	496	45	84	1.9*	map	table
Extreme high events Days with TMIN>=32°F	499	72	78	1.1	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	7226 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"	1154	0.10"	-0.10	162	213	1.3*	map	table
Extreme events Days with PRCP>0.15"	225	0.28"	-0.11	28	35	1.2	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"	1154	0.10"	-0.48	115	324	2.8*	map	table
Extreme events Days with PRCP>0.15"	225	0.28"	-0.43	21	54	2.6*	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"	1154	0.10"	142	234	1.6*	map	table
Extreme events Days with PRCP>0.15"	225	0.28"	23	39	1.7	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	4833 by year	0.18"		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"	540	1.59"	0.02	89	87	1.0	map	table
Extreme events Days with SNOW>2.5"	100	3.90"	-0.16	17	20	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"	540	1.59"	-0.71	35	181	5.2*	map	table
Extreme events Days with SNOW>2.5"	100	3.90"	-0.63	8	27	3.4*	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"	540	1.59"	53	148	2.8*	map	table
Extreme events Days with SNOW>2.5"	100	3.90"	11	20	1.8	map	table

SNOW under 2 index extremes Help

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