GREAT FALLS INTL ARPT, MT - COOP Northwest station 243751

243751 - GREAT FALLS INTL ARPT, Montana

Latitude
47° 28´N

Longitude
111° 23´W

Elevation
1117 meters

10 nearest COOP Northwest stations

0 mi	N :	GREAT FALLS NWSFO, MT
3 mi	NE :	GREAT FALLS, MT
5 mi	SSW :	ULM 8 SE TRULY, MT
10 mi	NW :	POWER 6 SE, MT
10 mi	W :	SUN RIVER 4 S, MT
14 mi	SW :	CASCADE 5 S, MT
15 mi	NNE :	CARTER 14 W, MT
15 mi	W :	SIMMS 1 NE, MT
17 mi	NNW :	DUTTON 6 E, MT
18 mi	WNW :	FAIRFIELD, MT

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

	Total observations	%	NDJFM observations	%
TMAX	18252	99.9%	7552	99.9%
TMIN	18070	98.9%	7463	98.7%
PRCP	17834	97.7%	7334	97.0%
SNOW	17960	98.3%	7464	98.7%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7552 by year	37.6°F	16.9°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	600	0.33	123	44	2.8*	map	table
Extreme low events Days with TMAX<=6°F	535	-0.46	76	172	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>=58°F	600	0.79	206	17	12.1*	map	table
Extreme low events Days with TMAX<=6°F	535	-1.11	15	240	16.0*	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	600	111	85	1.3	map	table
Extreme low events Days with TMAX<=6°F	535	61	94	1.5*	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7463 by year	18.5°F	16.4°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<=-11°F	514	-0.49	72	164	2.3*	map	table
Extreme high events Days with TMIN>=39°F	509	0.21	87	48	1.8*	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<=-11°F	514	-1.18	14	248	17.7*	map	table
Extreme high events Days with TMIN>=39°F	509	0.76	173	8	21.6*	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<=-11°F	514	49	87	1.8*	map	table
Extreme high events Days with TMIN>=39°F	509	68	97	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	7334 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"	2039	0.09"	-0.12	322	401	1.2*	map	table
Extreme events Days with PRCP>0.15"	372	0.29"	-0.12	58	71	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"	2039	0.09"	-0.39	219	500	2.3*	map	table
Extreme events Days with PRCP>0.15"	372	0.29"	-0.49	36	93	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"	2039	0.09"	270	337	1.2*	map	table
Extreme events Days with PRCP>0.15"	372	0.29"	48	67	1.4	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	7464 by year	0.30"		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"	1879	1.19"	-0.13	289	377	1.3*	map	table
Extreme events Days with SNOW>1.9"	369	3.45"	-0.10	59	67	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"	1879	1.19"	-0.47	167	492	2.9*	map	table
Extreme events Days with SNOW>1.9"	369	3.45"	-0.57	27	96	3.6*	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"	1879	1.19"	261	318	1.2*	map	table
Extreme events Days with SNOW>1.9"	369	3.45"	49	64	1.3	map	table

SNOW under 2 index extremes Help

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