HELENA, AR - COOP Southeast station 033242

033242 - HELENA, Arkansas

Latitude
34° 31´N

Longitude
90° 35´W

Elevation
59 meters

10 nearest COOP Southeast stations

7 mi	SE :	LULA, MS
15 mi	NNW :	BEAR CREEK LAKE, AR
16 mi	NE :	TUNICA, MS
16 mi	NE :	TUNICA 2, MS
18 mi	NW :	MARIANNA 2 S, AR
19 mi	W :	MARVELL, AR
22 mi	ESE :	SLEDGE 2 N, MS
22 mi	S :	CLARKSDALE, MS
23 mi	E :	SARAH 3 SE, MS
30 mi	ENE :	ARKABUTLA DAM, MS

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

	Total observations	%	NDJFM observations	%
TMAX	17643	96.6%	7304	96.6%
TMIN	17610	96.4%	7361	97.3%
PRCP	17780	97.4%	7387	97.7%
SNOW	17418	95.4%	6995	92.5%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7304 by year	56.0°F	12.8°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>=74°F	581	0.13	85	70	1.2	map	table
Extreme low events Days with TMAX<=36°F	534	-0.26	81	136	1.7*	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>=74°F	581	-0.58	29	148	5.1*	map	table
Extreme low events Days with TMAX<=36°F	534	0.34	147	68	2.2*	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>=74°F	581	76	101	1.3	map	table
Extreme low events Days with TMAX<=36°F	534	54	63	1.2	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7361 by year	36.1°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<=20°F	577	-0.30	86	142	1.7*	map	table
Extreme high events Days with TMIN>=54°F	528	0.20	89	60	1.5*	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<=20°F	577	0.47	172	63	2.7*	map	table
Extreme high events Days with TMIN>=54°F	528	-0.81	15	169	11.3*	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<=20°F	577	61	61	1.0	map	table
Extreme high events Days with TMIN>=54°F	528	74	119	1.6*	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	7387 by year	0.16"		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"	2215	0.54"	0.09	399	335	1.2*	map	table
Extreme events Days with PRCP>0.90"	439	1.60"	0.17	84	57	1.5*	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"	2215	0.54"	-0.26	271	472	1.7*	map	table
Extreme events Days with PRCP>0.90"	439	1.60"	-0.43	37	107	2.9*	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"	2215	0.54"	360	367	1.0	map	table
Extreme events Days with PRCP>0.90"	439	1.60"	62	83	1.3	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	6995 by year	0.01"		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"	44	2.17"	-0.19	3	9	3.0	map	table
Extreme events Days with SNOW>3.5"	8	6.50"	0.43	1	1	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"	44	2.17"	0.06	4	4	1.0	map	table
Extreme events Days with SNOW>3.5"	8	6.50"	0.48	2	1	2.0	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"	44	2.17"	2	10	5.0*	map	table
Extreme events Days with SNOW>3.5"	8	6.50"	0	0	NaN	map	table

SNOW under 2 index extremes Help

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