TRIPOLI, IA - COOP Northern Plains station 138339

138339 - TRIPOLI, Iowa

Latitude
42° 49´N

Longitude
92° 16´W

Elevation
293 meters

COOP Northern Plains

10 nearest COOP Northern Plains stations

17 mi	N :	NEW HAMPTON, IA
19 mi	NW :	NASHUA 2 NW, IA
19 mi	WSW :	SHELL ROCK 2 W, IA
20 mi	SSW :	WATERLOO MUNICIPAL ARPT, IA
20 mi	NE :	WAUCOMA, IA
21 mi	S :	WATERLOO, IA
21 mi	ESE :	OELWEIN 2 S, IA
22 mi	SSW :	CEDAR FALLS, IA
22 mi	S :	WATERLOO #1, IA
23 mi	E :	FAYETTE, IA

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

	Total observations	%	NDJFM observations	%
TMAX	17092	93.6%	7055	93.3%
TMIN	17090	93.6%	7057	93.3%
PRCP	17069	93.5%	7030	93.0%
SNOW	17059	93.4%	7017	92.8%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7055 by year	34.1°F	14.2°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>=56°F	472	0.33	87	37	2.4*	map	table
Extreme low events Days with TMAX<=12°F	514	-0.41	77	144	1.9*	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>=56°F	472	-0.22	37	63	1.7*	map	table
Extreme low events Days with TMAX<=12°F	514	0.07	107	103	1.0	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>=56°F	472	58	80	1.4	map	table
Extreme low events Days with TMAX<=12°F	514	61	63	1.0	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	7057 by year	15.9°F	15.0°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	477	-0.37	73	122	1.7*	map	table
Extreme high events Days with TMIN>=35°F	493	0.25	87	44	2.0*	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	477	0.11	109	103	1.1	map	table
Extreme high events Days with TMIN>=35°F	493	-0.27	35	70	2.0*	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<=-10°F	477	47	59	1.3	map	table
Extreme high events Days with TMIN>=35°F	493	98	78	1.3	map	table

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PRCP (total liquid water equivalent) Help top of page

PRCP	observations	mean		Distribution	during extreme days of
NDJFM	7030 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"	1362	0.25"	-0.05	214	229	1.1	map	table
Extreme events Days with PRCP>0.40"	254	0.75"	0.07	47	35	1.3	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"	1362	0.25"	-0.29	143	281	2.0*	map	table
Extreme events Days with PRCP>0.40"	254	0.75"	-0.58	13	58	4.5*	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"	1362	0.25"	198	224	1.1	map	table
Extreme events Days with PRCP>0.40"	254	0.75"	40	53	1.3	map	table

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SNOW Help top of page

SNOW	observations	mean		Distribution	during extreme days of
NDJFM	7017 by year	0.21"		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"	812	1.85"	-0.18	127	172	1.4*	map	table
Extreme events Days with SNOW>2.8"	161	4.90"	-0.17	26	37	1.4	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"	812	1.85"	-0.20	104	167	1.6*	map	table
Extreme events Days with SNOW>2.8"	161	4.90"	-0.38	12	32	2.7*	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"	812	1.85"	105	128	1.2	map	table
Extreme events Days with SNOW>2.8"	161	4.90"	21	31	1.5	map	table

SNOW under 2 index extremes Help

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