MILTON BLUE HILL OBSERVATORY, MA - COOP Northeast station 190736

190736 - MILTON BLUE HILL OBSERVATORY, Massachusetts

Latitude
42° 13´N

Longitude
71° 7´W

Elevation
192 meters

10 nearest COOP Northeast stations

5 mi	WSW :	NORWOOD RIVER GAGE, MA
7 mi	WSW :	WALPOLE, MA
8 mi	WSW :	WALPOLE 2, MA
8 mi	NW :	NEWTON, MA
8 mi	WNW :	CHARLES RIVER VILLAGE, MA
8 mi	NNW :	CHESTNUT HILL, MA
8 mi	WNW :	NEEDHAM, MA
9 mi	SW :	WALPOLE 1 SSE, MA
10 mi	E :	HINGHAM, MA
12 mi	N :	CAMBRIDGE, MA

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

	Total observations	%	NDJFM observations	%
TMAX	18092	99.1%	7465	98.7%
TMIN	18089	99.0%	7462	98.7%
PRCP	18012	98.6%	7465	98.7%
SNOW	17948	98.3%	7463	98.7%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7465 by year	40.2°F	11.6°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	582	0.30	112	39	2.9*	map	table
Extreme low events Days with TMAX<=23°F	529	-0.23	97	134	1.4	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	582	-0.27	40	95	2.4*	map	table
Extreme low events Days with TMAX<=23°F	529	0.31	132	76	1.7*	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	582	95	101	1.1	map	table
Extreme low events Days with TMAX<=23°F	529	60	77	1.3	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	7462 by year	24.7°F	11.3°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	564	-0.13	107	135	1.3	map	table
Extreme high events Days with TMIN>=41°F	517	0.20	89	43	2.1*	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	564	0.39	162	74	2.2*	map	table
Extreme high events Days with TMIN>=41°F	517	-0.18	39	81	2.1*	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	564	73	83	1.1	map	table
Extreme high events Days with TMIN>=41°F	517	87	93	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	7465 by year	0.15"		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"	2890	0.39"	-0.01	453	484	1.1	map	table
Extreme events Days with PRCP>0.67"	576	1.23"	-0.06	83	106	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"	2890	0.39"	0.01	498	493	1.0	map	table
Extreme events Days with PRCP>0.67"	576	1.23"	0.36	146	63	2.3*	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"	2890	0.39"	480	476	1.0	map	table
Extreme events Days with PRCP>0.67"	576	1.23"	104	90	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	7463 by year	0.38"		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"	1323	2.17"	-0.11	217	276	1.3*	map	table
Extreme events Days with SNOW>3.3"	259	7.14"	-0.07	36	51	1.4	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"	1323	2.17"	0.11	274	218	1.3*	map	table
Extreme events Days with SNOW>3.3"	259	7.14"	0.37	70	40	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"	1323	2.17"	206	204	1.0	map	table
Extreme events Days with SNOW>3.3"	259	7.14"	35	32	1.1	map	table

SNOW under 2 index extremes Help

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