EUREKA, SD - HCND station 392797

392797 - EUREKA, South Dakota

Latitude
45° 47´N

Longitude
99° 38´W

Elevation
1870 feet

10 nearest HCND stations

50 mi	N :	NAPOLEON, ND
53 mi	WNW :	FORT YATES 4SW, ND
57 mi	SSE :	FAULKTON 1NW, SD
62 mi	ESE :	ABERDEEN WSO AP, SD
64 mi	ENE :	FULLERTON 1ESE, ND
70 mi	SE :	MELLETTE, SD
88 mi	S :	HIGHMORE 1W, SD
88 mi	NNE :	JAMESTOWN STATE HOSPITAL, ND
92 mi	NW :	MANDAN EXPERIMENT STN, ND
102 mi	SSW :	PIERRE FAA AP, SD

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

	Total observations	%	NDJFM observations	%
TMAX	17439	95.5%	7197	95.2%
TMIN	17990	98.5%	7390	97.7%
PRCP	15644	85.7%	6056	80.1%
SNOW	13224	72.4%	5295	70.0%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7197 by year	29.9°F	16.2°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>=54°F	481	0.34	87	32	2.7*	map	table
Extreme low events Days with TMAX<=4°F	542	-0.42	76	168	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>=54°F	481	0.22	92	42	2.2*	map	table
Extreme low events Days with TMAX<=4°F	542	-0.58	49	176	3.6*	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>=54°F	481	64	85	1.3	map	table
Extreme low events Days with TMAX<=4°F	542	56	89	1.6*	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7390 by year	9.2°F	15.3°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<=-17°F	494	-0.32	70	131	1.9*	map	table
Extreme high events Days with TMIN>=29°F	593	0.29	104	48	2.2*	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	494	-0.54	58	171	2.9*	map	table
Extreme high events Days with TMIN>=29°F	593	0.13	94	55	1.7*	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	494	44	85	1.9*	map	table
Extreme high events Days with TMIN>=29°F	593	123	98	1.3	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	6056 by year	0.02"		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"	1298	0.09"	-0.12	194	250	1.3*	map	table
Extreme events Days with PRCP>0.12"	253	0.31"	-0.05	38	43	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"	1298	0.09"	-0.26	153	269	1.8*	map	table
Extreme events Days with PRCP>0.12"	253	0.31"	-0.30	20	45	2.2*	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"	1298	0.09"	191	230	1.2	map	table
Extreme events Days with PRCP>0.12"	253	0.31"	55	46	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	5295 by year	0.32"		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"	966	1.78"	-0.25	129	213	1.7*	map	table
Extreme events Days with SNOW>3.0"	148	5.23"	-0.18	15	27	1.8	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"	966	1.78"	-0.33	109	228	2.1*	map	table
Extreme events Days with SNOW>3.0"	148	5.23"	-0.45	12	39	3.2*	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"	966	1.78"	126	171	1.4*	map	table
Extreme events Days with SNOW>3.0"	148	5.23"	29	33	1.1	map	table

SNOW under 2 index extremes Help

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