SIMPSON 6 NW, MT - COOP Northwest station 247620

247620 - SIMPSON 6 NW, Montana

Latitude
48° 59´N

Longitude
110° 18´W

Elevation
835 meters

10 nearest COOP Northwest stations

8 mi	WSW :	RUDYARD 27 N, MT
11 mi	SSW :	HINGHAM 11 N, MT
12 mi	SE :	HAVRE 22 NW, MT
15 mi	WSW :	JOPLIN 23 N, MT
17 mi	S :	GILDFORD, MT
17 mi	W :	CHESTER 31 N, MT
18 mi	SSW :	HINGHAM, MT
20 mi	SSE :	KREMLIN, MT
22 mi	SW :	JOPLIN, MT
27 mi	SW :	CHESTER, MT

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

	Total observations	%	NDJFM observations	%
TMAX	17535	96.0%	7200	95.2%
TMIN	17578	96.2%	7216	95.4%
PRCP	18011	98.6%	7462	98.7%
SNOW	17908	98.1%	7393	97.8%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7200 by year	31.9°F	18.3°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>=56°F	500	0.31	93	39	2.4*	map	table
Extreme low events Days with TMAX<=0°F	499	-0.44	69	159	2.3*	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>=56°F	500	0.74	158	16	9.9*	map	table
Extreme low events Days with TMAX<=0°F	499	-1.20	11	249	22.6*	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>=56°F	500	95	77	1.2	map	table
Extreme low events Days with TMAX<=0°F	499	51	78	1.5*	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7216 by year	8.0°F	17.0°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<=-20°F	559	-0.34	87	156	1.8*	map	table
Extreme high events Days with TMIN>=30°F	579	0.37	139	55	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<=-20°F	559	-1.10	14	260	18.6*	map	table
Extreme high events Days with TMIN>=30°F	579	0.54	148	23	6.4*	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<=-20°F	559	50	105	2.1*	map	table
Extreme high events Days with TMIN>=30°F	579	105	77	1.4	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	7462 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"	876	0.09"	-0.15	124	180	1.5*	map	table
Extreme events Days with PRCP>0.13"	168	0.24"	-0.18	23	36	1.6	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"	876	0.09"	-0.46	92	235	2.6*	map	table
Extreme events Days with PRCP>0.13"	168	0.24"	-0.24	24	33	1.4	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"	876	0.09"	114	148	1.3*	map	table
Extreme events Days with PRCP>0.13"	168	0.24"	17	20	1.2	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	7393 by year	0.16"		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"	768	1.57"	-0.18	110	164	1.5*	map	table
Extreme events Days with SNOW>2.0"	135	3.77"	-0.27	21	31	1.5	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"	768	1.57"	-0.56	70	222	3.2*	map	table
Extreme events Days with SNOW>2.0"	135	3.77"	-0.52	10	33	3.3*	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"	768	1.57"	99	140	1.4*	map	table
Extreme events Days with SNOW>2.0"	135	3.77"	11	23	2.1*	map	table

SNOW under 2 index extremes Help

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