SMITHLAND LOCK & DAM, IL - COOP Midwest station 118020

118020 - SMITHLAND LOCK & DAM, Illinois

Latitude
37° 10´N

Longitude
88° 26´W

Elevation
109 meters

10 nearest COOP Midwest stations

12 mi	W :	BROOKPORT DAM 52, IL
14 mi	NNW :	GOLCONDA RIVER, IL
18 mi	NNE :	ROSICLARE 5 NW, IL
21 mi	NNE :	ELIZABETHTOWN 1 NW, IL
22 mi	NW :	DIXON SPRINGS AGR CENTER, IL
22 mi	NW :	DIXON SPRINGS AGR CENTER, IL
34 mi	W :	GRAND CHAIN DAM 53, IL
34 mi	NNW :	NEW BURNSIDE, IL
38 mi	NW :	CREAL SPRINGS, IL
39 mi	N :	HARRISBURG, IL

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

	Total observations	%	NDJFM observations	%
TMAX	6170	33.8%	2563	33.9%
TMIN	6171	33.8%	2566	33.9%
PRCP	6222	34.1%	2589	34.2%
SNOW	6099	33.4%	2461	32.5%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	2563 by year	49.8°F	13.8°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>=70°F	195	0.34	35	14	2.5*	map	table
Extreme low events Days with TMAX<=30°F	191	0.20	45	30	1.5	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>=70°F	195	-0.24	21	32	1.5	map	table
Extreme low events Days with TMAX<=30°F	191	0.56	62	22	2.8*	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>=70°F	195	51	8	6.4*	map	table
Extreme low events Days with TMAX<=30°F	191	24	12	2.0*	map	table

TMAX under 2 index extremes Help

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	2566 by year	30.0°F	12.2°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<=11°F	184	0.12	42	31	1.4	map	table
Extreme high events Days with TMIN>=48°F	190	0.49	42	10	4.2*	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<=11°F	184	0.26	50	27	1.9*	map	table
Extreme high events Days with TMIN>=48°F	190	-0.52	8	42	5.2*	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<=11°F	184	12	6	2.0*	map	table
Extreme high events Days with TMIN>=48°F	190	60	10	6.0*	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	2589 by year	0.13"		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"	818	0.42"	0.37	190	89	2.1*	map	table
Extreme events Days with PRCP>0.68"	163	1.24"	0.55	39	8	4.9*	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"	818	0.42"	-0.04	140	142	1.0	map	table
Extreme events Days with PRCP>0.68"	163	1.24"	-0.36	16	34	2.1*	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"	818	0.42"	185	44	4.2*	map	table
Extreme events Days with PRCP>0.68"	163	1.24"	32	15	2.1*	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	2461 by year	0.05"		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"	62	1.86"	-0.37	6	14	2.3	map	table
Extreme events Days with SNOW>3.0"	11	5.00"	0.18	4	2	2.0	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"	62	1.86"	0.66	20	6	3.3*	map	table
Extreme events Days with SNOW>3.0"	11	5.00"	0.31	3	2	1.5	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"	62	1.86"	10	1	10.0*	map	table
Extreme events Days with SNOW>3.0"	11	5.00"	0	0	NaN	map	table

SNOW under 2 index extremes Help

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