NATIONAL ARBORETUM DC, MD - COOP Mid-Atlantic station 186350

186350 - NATIONAL ARBORETUM DC, Maryland

Latitude
38° 54´N

Longitude
76° 59´W

Elevation
15 meters

COOP Mid-Atlantic

10 nearest COOP Mid-Atlantic stations

3 mi	NW :	U S SOLDIERS HOME DC, MD
4 mi	SW :	WASHINGTON DC NATIONAL ARPT, VA
4 mi	W :	WASHNGTN DC WB CITY, MD
4 mi	NNW :	BRIGHTWOOD DC, MD
4 mi	SE :	SUITLAND, MD
5 mi	N :	BROOKSIDE MANOR, MD
5 mi	SSE :	SILVER HILL OBSV, MD
5 mi	NNE :	RIVERDALE, MD
5 mi	W :	CLARENDON LYON PARK, VA
6 mi	SE :	DISTRICT HEIGHTS, MD

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

	Total observations	%	NDJFM observations	%
TMAX	17599	96.4%	7225	95.5%
TMIN	17543	96.1%	7180	94.9%
PRCP	17689	96.9%	7274	96.2%
SNOW	17169	94.0%	6739	89.1%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7225 by year	50.4°F	12.1°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>=70°F	496	0.26	82	38	2.2*	map	table
Extreme low events Days with TMAX<=33°F	534	-0.26	88	138	1.6*	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>=70°F	496	-0.53	26	123	4.7*	map	table
Extreme low events Days with TMAX<=33°F	534	0.52	160	47	3.4*	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>=70°F	496	71	104	1.5*	map	table
Extreme low events Days with TMAX<=33°F	534	60	67	1.1	map	table

TMAX under 2 index extremes Help

Maps - choose one extreme:

TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7180 by year	30.7°F	10.2°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	511	-0.14	89	107	1.2	map	table
Extreme high events Days with TMIN>=46°F	517	0.22	83	43	1.9*	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	511	0.44	146	60	2.4*	map	table
Extreme high events Days with TMIN>=46°F	517	-0.35	33	100	3.0*	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	511	61	62	1.0	map	table
Extreme high events Days with TMIN>=46°F	517	95	77	1.2	map	table

TMIN under 2 index extremes Help

Maps - choose one extreme:

PRCP (total liquid water equivalent) Help top of page

PRCP	observations	mean		Distribution	during extreme days of
NDJFM	7274 by year	0.11"		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"	2118	0.37"	0.02	346	340	1.0	map	table
Extreme events Days with PRCP>0.63"	413	1.06"	-0.04	58	68	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"	2118	0.37"	-0.04	346	387	1.1	map	table
Extreme events Days with PRCP>0.63"	413	1.06"	0.28	91	53	1.7*	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"	2118	0.37"	326	356	1.1	map	table
Extreme events Days with PRCP>0.63"	413	1.06"	69	54	1.3	map	table

PRCP under 2 index extremes Help

Maps - choose one extreme:

SNOW Help top of page

SNOW	observations	mean		Distribution	during extreme days of
NDJFM	6739 by year	0.11"		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"	242	2.93"	-0.22	35	55	1.6	map	table
Extreme events Days with SNOW>4.5"	45	7.50"	-0.48	2	11	5.5*	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"	242	2.93"	0.35	66	32	2.1*	map	table
Extreme events Days with SNOW>4.5"	45	7.50"	0.88	17	3	5.7*	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"	242	2.93"	27	16	1.7*	map	table
Extreme events Days with SNOW>4.5"	45	7.50"	11	2	5.5*	map	table

SNOW under 2 index extremes Help

Maps - choose one extreme: