ROCK HALL, MD - COOP Mid-Atlantic station 187700

187700 - ROCK HALL, Maryland

Latitude
39° 8´N

Longitude
76° 14´W

Elevation
6 meters

COOP Mid-Atlantic

10 nearest COOP Mid-Atlantic stations

8 mi	S :	EASTERN NECK ISLAND, MD
11 mi	ENE :	CHESTERTOWN, MD
11 mi	ESE :	CENTREVILLE, MD
12 mi	SSW :	STEVENSVILLE 1 W, MD
12 mi	SW :	SANDY POINT, MD
13 mi	S :	GRASONVILLE, MD
15 mi	NW :	MIDDLE RIVER, MD
16 mi	NNW :	EDGEWOOD ARSENAL, MD
16 mi	NNE :	COLEMAN 3 WNW, MD
17 mi	SW :	ANNAPOLIS US NAVAL ACADEMY, MD

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

	Total observations	%	NDJFM observations	%
TMAX	6436	35.2%	2577	34.1%
TMIN	6436	35.2%	2575	34.0%
PRCP	6484	35.5%	2577	34.1%
SNOW	6460	35.4%	2547	33.7%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	2577 by year	48.9°F	10.7°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>=66°F	172	-0.16	15	23	1.5	map	table
Extreme low events Days with TMAX<=33°F	174	-0.48	22	48	2.2*	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>=66°F	172	-0.52	8	41	5.1*	map	table
Extreme low events Days with TMAX<=33°F	174	0.37	44	22	2.0*	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>=66°F	172	10	40	4.0*	map	table
Extreme low events Days with TMAX<=33°F	174	23	36	1.6	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	2575 by year	31.2°F	9.5°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<=17°F	187	-0.31	30	51	1.7	map	table
Extreme high events Days with TMIN>=45°F	207	-0.15	20	22	1.1	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<=17°F	187	0.25	46	29	1.6	map	table
Extreme high events Days with TMIN>=45°F	207	-0.34	9	34	3.8*	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<=17°F	187	25	41	1.6	map	table
Extreme high events Days with TMIN>=45°F	207	28	33	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	2577 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"	802	0.33"	-0.22	108	177	1.6*	map	table
Extreme events Days with PRCP>0.55"	158	0.94"	-0.33	17	38	2.2*	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"	802	0.33"	-0.21	110	175	1.6*	map	table
Extreme events Days with PRCP>0.55"	158	0.94"	0.03	31	27	1.1	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"	802	0.33"	83	188	2.3*	map	table
Extreme events Days with PRCP>0.55"	158	0.94"	20	24	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	2547 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"	121	2.42"	-0.39	20	34	1.7	map	table
Extreme events Days with SNOW>3.5"	24	6.86"	-0.36	2	7	3.5	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"	121	2.42"	0.04	23	22	1.0	map	table
Extreme events Days with SNOW>3.5"	24	6.86"	0.47	5	1	5.0	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"	121	2.42"	12	24	2.0	map	table
Extreme events Days with SNOW>3.5"	24	6.86"	6	2	3.0	map	table

SNOW under 2 index extremes Help

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