YELLOWSTONE PARK MAMMOTH, WY - COOP Lower Rockies station 489905

489905 - YELLOWSTONE PARK MAMMOTH, Wyoming

Latitude
44° 59´N

Longitude
110° 42´W

Elevation
1899 meters

COOP Lower Rockies

10 nearest COOP Lower Rockies stations

15 mi	ESE :	TOWER FALLS, WY
24 mi	ESE :	LAMAR RANGER STN, WY
32 mi	SSE :	LAKE YELLOWSTONE, WY
37 mi	S :	OLD FAITHFUL, WY
48 mi	SE :	EAST GATE Y N P, WY
51 mi	E :	CRANDALL CREEK, WY
59 mi	S :	SNAKE RIVER, WY
59 mi	S :	GRASSY LAKE DAM, WY
60 mi	SSW :	BECHLER RIVER RS, WY
64 mi	ESE :	WAPITI 9 W, WY

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

	Total observations	%	NDJFM observations	%
TMAX	16774	91.8%	6993	92.5%
TMIN	16821	92.1%	7038	93.1%
PRCP	17104	93.7%	7127	94.2%
SNOW	16271	89.1%	6682	88.4%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	6993 by year	34.2°F	11.0°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>=49°F	532	0.17	76	48	1.6*	map	table
Extreme low events Days with TMAX<=17°F	468	-0.02	91	95	1.0	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>=49°F	532	0.70	161	18	8.9*	map	table
Extreme low events Days with TMAX<=17°F	468	-0.90	18	177	9.8*	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>=49°F	532	102	76	1.3	map	table
Extreme low events Days with TMAX<=17°F	468	50	77	1.5*	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7038 by year	14.2°F	12.8°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<=-7°F	488	-0.12	87	108	1.2	map	table
Extreme high events Days with TMIN>=31°F	535	0.03	72	73	1.0	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<=-7°F	488	-0.87	17	178	10.5*	map	table
Extreme high events Days with TMIN>=31°F	535	0.24	99	39	2.5*	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<=-7°F	488	52	100	1.9*	map	table
Extreme high events Days with TMIN>=31°F	535	81	104	1.3	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	7127 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"	2251	0.10"	-0.01	376	402	1.1	map	table
Extreme events Days with PRCP>0.15"	441	0.31"	-0.13	61	84	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"	2251	0.10"	-0.41	199	547	2.7*	map	table
Extreme events Days with PRCP>0.15"	441	0.31"	-0.63	31	143	4.6*	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"	2251	0.10"	306	433	1.4*	map	table
Extreme events Days with PRCP>0.15"	441	0.31"	53	85	1.6*	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	6682 by year	0.40"		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"	1626	1.63"	0.03	273	278	1.0	map	table
Extreme events Days with SNOW>2.3"	323	4.15"	0.01	55	55	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"	1626	1.63"	-0.49	133	466	3.5*	map	table
Extreme events Days with SNOW>2.3"	323	4.15"	-0.76	19	119	6.3*	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"	1626	1.63"	211	345	1.6*	map	table
Extreme events Days with SNOW>2.3"	323	4.15"	29	83	2.9*	map	table

SNOW under 2 index extremes Help

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