090219 - ALPHARETTA 4 SSW, Georgia

Latitude
34° 0´N
Longitude
84° 18´W
Elevation
317 meters

COOP Southeast

Georgia
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Main
10 nearest COOP Southeast stations
5 miSE :NORCROSS, GA
8 miN :FIELDS CROSS ROADS, GA
14 miNNE :CUMMING 2 SW, GA
15 miNW :WOODSTOCK, GA
16 miSW :ATLANTA BOLTON, GA
17 miSSW :DECATUR, GA
17 miNNE :CUMMING 1 WNW, GA
17 miS :ATLANTA KIRKWOOD, GA
18 miSSW :ATLANTA WSO-CITY, GA
19 miWSW :MABLETON 1 N, GA

Weather variables    Help
Click a weather variable name to jump down to those statistics.
Total
observations
%
NDJFM
observations
%
TMAX
13451
73.7%
5546
73.3%
TMIN
13465
73.7%
5557
73.5%
PRCP
13482
73.8%
5527
73.1%
SNOW
13541
74.1%
5504
72.8%




TMAX     Help     top of page

TMAX
observations
mean
std dev
   
Distribution
during extreme days of
NDJFM
5546  by year
56.1°F
11.8°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>=73°F
427
0.40
91
31
2.9*
map
table
Extreme low events
Days with TMAX<=38°F
417
-0.46
52
119
2.3*
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
427
-0.55
27
113
4.2*
map
table
Extreme low events
Days with TMAX<=38°F
417
0.67
136
30
4.5*
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
427
59
71
1.2
map
table
Extreme low events
Days with TMAX<=38°F
417
79
25
3.2*
map
table

TMAX under 2 index extremes     Help
Station table Maps - choose one extreme:
High NAMLow NAM High PNALow PNA High CTILow CTI




TMIN     Help     top of page

TMIN
observations
mean
std dev
   
Distribution
during extreme days of
NDJFM
5557  by year
32.4°F
11.0°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<=17°F
425
-0.46
54
127
2.4*
map
table
Extreme high events
Days with TMIN>=50°F
407
0.25
67
34
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<=17°F
425
0.60
144
34
4.2*
map
table
Extreme high events
Days with TMIN>=50°F
407
-0.56
29
100
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<=17°F
425
69
30
2.3*
map
table
Extreme high events
Days with TMIN>=50°F
407
98
51
1.9*
map
table

TMIN under 2 index extremes     Help
Station table Maps - choose one extreme:
High NAMLow NAM High PNALow PNA High CTILow CTI




PRCP (total liquid water equivalent)     Help     top of page

PRCP
observations
mean
   
Distribution
during extreme days of
NDJFM
5527  by year
0.16"
   
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"
1864
0.48"
-0.02
301
308
1.0
map
table
Extreme events
Days with PRCP>0.77"
372
1.43"
0.04
71
55
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"
1864
0.48"
-0.05
318
342
1.1
map
table
Extreme events
Days with PRCP>0.77"
372
1.43"
-0.10
57
64
1.1
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"
1864
0.48"
387
217
1.8*
map
table
Extreme events
Days with PRCP>0.77"
372
1.43"
85
32
2.7*
map
table

PRCP under 2 index extremes     Help
Station table Maps - choose one extreme:
High NAMLow NAM High PNALow PNA High CTILow CTI




SNOW     Help     top of page

SNOW
observations
mean
   
Distribution
during extreme days of
NDJFM
5504  by year
0.01"
   
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"
33
1.95"
-0.04
7
6
1.2
map
table
Extreme events
Days with SNOW>3.1"
6
5.83"
1.42
4
0
Inf
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"
33
1.95"
1.48
19
0
Inf*
map
table
Extreme events
Days with SNOW>3.1"
6
5.83"
2.14
4
0
Inf
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"
33
1.95"
8
3
2.7
map
table
Extreme events
Days with SNOW>3.1"
6
5.83"
2
0
Inf
map
table

SNOW under 2 index extremes     Help
Station table Maps - choose one extreme:
High NAMLow NAM High PNALow PNA High CTILow CTI