363435 - GRATERFORD, Pennsylvania

Latitude
40° 14´N
Longitude
75° 27´W
Elevation
46 meters

COOP Northeast

Pennsylvania
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10 nearest COOP Northeast stations
1 miE :GRATERFORD 1 E, PA
8 miSSW :PHOENIXVILLE 1 E, PA
10 miSSE :NORRISTOWN, PA
11 miW :POTTSTOWN, PA
11 miNNW :PALM 3 SE, PA
12 miNE :SELLERSVILLE, PA
12 miSSW :DEVAULT 1 W, PA
12 miNE :PERKASIE, PA
12 miE :SPRING HOUSE 2 NE, PA
13 miSSE :CONSHOHOCKEN, PA

Weather variables    Help
Click a weather variable name to jump down to those statistics.
Total
observations
%
NDJFM
observations
%
TMAX
424
2.3%
211
2.8%
TMIN
425
2.3%
211
2.8%
PRCP
8205
44.9%
3381
44.7%
SNOW
7590
41.6%
2758
36.5%




TMAX     top of page

Data not shown:
Less than 5% of days have TMAX observations during NDJFM over 1948-1997




TMIN     top of page

Data not shown:
Less than 5% of days have TMIN observations during NDJFM over 1948-1997




PRCP (total liquid water equivalent)     Help     top of page

PRCP
observations
mean
   
Distribution
during extreme days of
NDJFM
3381  by year
0.11"
   
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"
1062
0.36"
-0.28
120
237
2.0*
map
table
Extreme events
Days with PRCP>0.58"
212
1.03"
-0.35
18
50
2.8*
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"
1062
0.36"
-0.17
137
211
1.5*
map
table
Extreme events
Days with PRCP>0.58"
212
1.03"
0.08
33
28
1.2
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"
1062
0.36"
146
267
1.8*
map
table
Extreme events
Days with PRCP>0.58"
212
1.03"
25
50
2.0*
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
2758  by year
0.17"
   
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"
179
2.61"
-0.42
18
52
2.9*
map
table
Extreme events
Days with SNOW>4.0"
29
8.05"
-0.64
2
11
5.5
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"
179
2.61"
-0.03
27
32
1.2
map
table
Extreme events
Days with SNOW>4.0"
29
8.05"
0.80
10
1
10.0*
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"
179
2.61"
34
41
1.2
map
table
Extreme events
Days with SNOW>4.0"
29
8.05"
10
2
5.0
map
table

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