LEWISTOWN 11 SSE, MT - COOP Northwest station 244978

244978 - LEWISTOWN 11 SSE, Montana

Latitude
46° 54´N

Longitude
109° 25´W

Elevation
1513 meters

10 nearest COOP Northwest stations

10 mi	S :	JUDITH GAP 13 E, MT
12 mi	WSW :	BUFFALO, MT
13 mi	SW :	JUDITH GAP, MT
16 mi	S :	RYEGATE 18 NNW, MT
23 mi	SSW :	HARLOWTON, MT
24 mi	S :	BARBER, MT
34 mi	N :	LEWISTOWN MUNICIPAL ARPT, MT
34 mi	NNW :	HOBSON, MT
36 mi	S :	GIBSON 2 NE, MT
36 mi	SSW :	MELVILLE, MT

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

	Total observations	%	NDJFM observations	%
TMAX	3159	17.3%	1268	16.8%
TMIN	3161	17.3%	1268	16.8%
PRCP	17668	96.7%	7216	95.4%
SNOW	16262	89.0%	6305	83.4%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	1268 by year	35.8°F	16.1°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>=57°F	91	-0.05	3	7	2.3	map	table
Extreme low events Days with TMAX<=7°F	86	-0.34	11	23	2.1	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>=57°F	91	1.13	41	0	Inf*	map	table
Extreme low events Days with TMAX<=7°F	86	-1.62	0	58	Inf*	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>=57°F	91	3	51	17.0*	map	table
Extreme low events Days with TMAX<=7°F	86	0	52	Inf*	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	1268 by year	14.2°F	15.8°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<=-15°F	90	-0.27	14	22	1.6	map	table
Extreme high events Days with TMIN>=34°F	87	-0.27	6	15	2.5*	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<=-15°F	90	-1.70	0	63	Inf*	map	table
Extreme high events Days with TMIN>=34°F	87	0.74	30	4	7.5*	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<=-15°F	90	0	54	Inf*	map	table
Extreme high events Days with TMIN>=34°F	87	6	47	7.8*	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	7216 by year	0.03"		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"	1894	0.13"	-0.12	285	371	1.3*	map	table
Extreme events Days with PRCP>0.20"	375	0.35"	-0.06	51	64	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"	1894	0.13"	-0.27	219	402	1.8*	map	table
Extreme events Days with PRCP>0.20"	375	0.35"	-0.12	54	64	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"	1894	0.13"	256	316	1.2*	map	table
Extreme events Days with PRCP>0.20"	375	0.35"	61	42	1.5	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	6305 by year	0.59"		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"	1293	2.88"	-0.09	208	259	1.2*	map	table
Extreme events Days with SNOW>4.5"	256	7.17"	-0.06	37	45	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"	1293	2.88"	-0.41	133	323	2.4*	map	table
Extreme events Days with SNOW>4.5"	256	7.17"	-0.28	28	50	1.8*	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"	1293	2.88"	184	245	1.3*	map	table
Extreme events Days with SNOW>4.5"	256	7.17"	40	32	1.2	map	table

SNOW under 2 index extremes Help

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