GANN VALLEY 4NW, SD - HCND station 393217

393217 - GANN VALLEY 4NW, South Dakota

Latitude
44° 4´N

Longitude
99° 4´W

Elevation
1720 feet

10 nearest HCND stations

37 mi	NNW :	HIGHMORE 1W, SD
39 mi	S :	ACADEMY 2NE, SD
41 mi	WSW :	KENNEBEC, SD
50 mi	E :	FORESTBURG 3NE, SD
64 mi	WNW :	PIERRE FAA AP, SD
67 mi	N :	FAULKTON 1NW, SD
70 mi	ESE :	ALEXANDRIA, SD
77 mi	E :	HOWARD, SD
80 mi	NNE :	MELLETTE, SD
81 mi	WSW :	WOOD, SD

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

	Total observations	%	NDJFM observations	%
TMAX	17956	98.3%	7475	98.8%
TMIN	17839	97.7%	7435	98.3%
PRCP	13820	75.7%	5482	72.5%
SNOW	12021	65.8%	4951	65.5%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7475 by year	34.8°F	16.1°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>=59°F	522	0.37	103	38	2.7*	map	table
Extreme low events Days with TMAX<=9°F	511	-0.43	74	161	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>=59°F	522	0.14	91	54	1.7*	map	table
Extreme low events Days with TMAX<=9°F	511	-0.50	58	167	2.9*	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>=59°F	522	70	97	1.4	map	table
Extreme low events Days with TMAX<=9°F	511	48	83	1.7*	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7435 by year	12.2°F	14.7°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<=-13°F	504	-0.33	77	135	1.8*	map	table
Extreme high events Days with TMIN>=31°F	595	0.26	113	62	1.8*	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<=-13°F	504	-0.33	72	149	2.1*	map	table
Extreme high events Days with TMIN>=31°F	595	0.01	68	69	1.0	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<=-13°F	504	40	69	1.7*	map	table
Extreme high events Days with TMIN>=31°F	595	102	106	1.0	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	5482 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"	902	0.14"	-0.12	141	176	1.2	map	table
Extreme events Days with PRCP>0.20"	179	0.46"	-0.04	29	31	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"	902	0.14"	-0.21	105	164	1.6*	map	table
Extreme events Days with PRCP>0.20"	179	0.46"	-0.25	14	28	2.0*	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"	902	0.14"	141	129	1.1	map	table
Extreme events Days with PRCP>0.20"	179	0.46"	42	23	1.8	map	table

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SNOW Help top of page

SNOW	observations	mean		Distribution	during extreme days of
NDJFM	4951 by year	0.22"		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"	693	1.61"	-0.23	91	149	1.6*	map	table
Extreme events Days with SNOW>2.5"	136	4.11"	-0.10	19	22	1.2	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"	693	1.61"	-0.20	95	136	1.4*	map	table
Extreme events Days with SNOW>2.5"	136	4.11"	-0.55	7	42	6.0*	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"	693	1.61"	83	115	1.4*	map	table
Extreme events Days with SNOW>2.5"	136	4.11"	21	23	1.1	map	table

SNOW under 2 index extremes Help

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