WASHINGTON DC NATIONAL ARPT, VA - COOP Mid-Atlantic station 448906

448906 - WASHINGTON DC NATIONAL ARPT, Virginia

Latitude
38° 52´N

Longitude
77° 2´W

Elevation
3 meters

COOP Mid-Atlantic

10 nearest COOP Mid-Atlantic stations

2 mi	NNW :	WASHNGTN DC WB CITY, MD
4 mi	NE :	NATIONAL ARBORETUM DC, MD
4 mi	NW :	CLARENDON LYON PARK, VA
4 mi	SSW :	ALEXANDRIA POTOMAC YARDS, VA
4 mi	W :	BARCROFT, VA
5 mi	WNW :	WAVERLY HILLS, VA
5 mi	N :	U S SOLDIERS HOME DC, MD
5 mi	SW :	EPISCOPAL HIGH SCHOOL, VA
5 mi	ESE :	SILVER HILL OBSV, MD
5 mi	SSW :	ALEXANDRIA CITY GARAGE, VA

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

	Total observations	%	NDJFM observations	%
TMAX	18261	100.0%	7563	100.0%
TMIN	18263	100.0%	7563	100.0%
PRCP	18263	100.0%	7563	100.0%
SNOW	18255	100.0%	7557	99.9%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7563 by year	49.8°F	12.0°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>=69°F	529	0.34	107	32	3.3*	map	table
Extreme low events Days with TMAX<=33°F	601	-0.29	94	147	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>=69°F	529	-0.58	21	132	6.3*	map	table
Extreme low events Days with TMAX<=33°F	601	0.53	185	59	3.1*	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>=69°F	529	79	107	1.4	map	table
Extreme low events Days with TMAX<=33°F	601	64	79	1.2	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	7563 by year	33.3°F	9.6°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<=19°F	611	-0.24	92	138	1.5*	map	table
Extreme high events Days with TMIN>=48°F	528	0.27	96	40	2.4*	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<=19°F	611	0.54	190	57	3.3*	map	table
Extreme high events Days with TMIN>=48°F	528	-0.37	36	112	3.1*	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<=19°F	611	76	65	1.2	map	table
Extreme high events Days with TMIN>=48°F	528	99	83	1.2	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	7563 by year	0.10"		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"	2416	0.31"	0.05	414	383	1.1	map	table
Extreme events Days with PRCP>0.53"	475	0.94"	0.02	75	74	1.0	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"	2416	0.31"	-0.08	382	455	1.2*	map	table
Extreme events Days with PRCP>0.53"	475	0.94"	0.12	98	68	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"	2416	0.31"	364	394	1.1	map	table
Extreme events Days with PRCP>0.53"	475	0.94"	74	65	1.1	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	7557 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"	449	1.86"	-0.26	61	106	1.7*	map	table
Extreme events Days with SNOW>3.0"	89	5.59"	-0.32	6	17	2.8*	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"	449	1.86"	0.36	122	62	2.0*	map	table
Extreme events Days with SNOW>3.0"	89	5.59"	0.46	25	8	3.1*	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"	449	1.86"	50	58	1.2	map	table
Extreme events Days with SNOW>3.0"	89	5.59"	17	5	3.4*	map	table

SNOW under 2 index extremes Help

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