HELENA 1 SSE, OK - COOP South Central station 344019

344019 - HELENA 1 SSE, Oklahoma

Latitude
36° 32´N

Longitude
98° 17´W

Elevation
412 meters

COOP South Central

10 nearest COOP South Central stations

16 mi	SW :	ORIENTA, OK
17 mi	NNW :	CHEROKEE, OK
17 mi	NNE :	GREAT SALT PLAINS DAM, OK
18 mi	NW :	DACOMA 2 NE, OK
20 mi	SSE :	AMES, OK
22 mi	SSW :	FAIRVIEW, OK
24 mi	ESE :	ENID, OK
25 mi	E :	KREMLIN, OK
27 mi	NW :	ALVA, OK
27 mi	SE :	WAUKOMIS, OK

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

	Total observations	%	NDJFM observations	%
TMAX	13354	73.1%	5489	72.6%
TMIN	13318	72.9%	5488	72.6%
PRCP	18163	99.5%	7498	99.1%
SNOW	18060	98.9%	7393	97.8%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	5489 by year	51.4°F	14.9°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>=73°F	379	0.30	80	43	1.9*	map	table
Extreme low events Days with TMAX<=28°F	366	-0.18	63	88	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>=73°F	379	-0.27	28	66	2.4*	map	table
Extreme low events Days with TMAX<=28°F	366	-0.11	61	80	1.3	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>=73°F	379	48	61	1.3	map	table
Extreme low events Days with TMAX<=28°F	366	52	31	1.7*	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	5488 by year	27.4°F	11.2°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<=10°F	410	-0.19	72	100	1.4	map	table
Extreme high events Days with TMIN>=44°F	374	0.30	80	42	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<=10°F	410	-0.07	80	91	1.1	map	table
Extreme high events Days with TMIN>=44°F	374	-0.37	20	69	3.4*	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<=10°F	410	39	38	1.0	map	table
Extreme high events Days with TMIN>=44°F	374	75	44	1.7*	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	7498 by year	0.05"		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"	1094	0.32"	0.02	198	199	1.0	map	table
Extreme events Days with PRCP>0.48"	217	0.98"	0.02	38	35	1.1	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"	1094	0.32"	-0.08	146	182	1.2*	map	table
Extreme events Days with PRCP>0.48"	217	0.98"	-0.19	20	36	1.8*	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"	1094	0.32"	232	117	2.0*	map	table
Extreme events Days with PRCP>0.48"	217	0.98"	43	19	2.3*	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	7393 by year	0.10"		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"	307	2.50"	-0.09	57	64	1.1	map	table
Extreme events Days with SNOW>4.0"	46	6.57"	0.01	11	7	1.6	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"	307	2.50"	0.06	51	45	1.1	map	table
Extreme events Days with SNOW>4.0"	46	6.57"	-0.02	9	7	1.3	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"	307	2.50"	49	34	1.4	map	table
Extreme events Days with SNOW>4.0"	46	6.57"	7	4	1.8	map	table

SNOW under 2 index extremes Help

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