030746 - BLACK ROCK, Arkansas

Latitude
36° 6´N
Longitude
91° 6´W
Elevation
73 meters

COOP Southeast

Arkansas
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Main
10 nearest COOP Southeast stations
10 miENE :WALNUT RIDGE MUNICIPAL ARPT, AR
11 miW :SMITHVILLE, AR
14 miNNE :POCAHONTAS 1, AR
14 miS :ALICIA, AR
22 miSW :WALNUT GROVE 2 NNE, AR
24 miWNW :HARDY, AR
27 miENE :BEECH GROVE, AR
27 miSE :JONESBORO 4 N, AR
29 miW :EVENING SHADE 1 NNE, AR
34 miE :PARAGOULD 1 S, AR

Weather variables    Help
Click a weather variable name to jump down to those statistics.
Total
observations
%
NDJFM
observations
%
TMAX
58
0.3%
29
0.4%
TMIN
29
0.2%
29
0.4%
PRCP
18250
99.9%
7554
99.9%
SNOW
17984
98.5%
7289
96.4%




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
7554  by year
0.14"
   
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"
1894
0.57"
0.06
335
307
1.1
map
table
Extreme events
Days with PRCP>0.91"
378
1.65"
0.15
68
49
1.4
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"
1894
0.57"
-0.27
215
401
1.9*
map
table
Extreme events
Days with PRCP>0.91"
378
1.65"
-0.54
23
93
4.0*
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"
1894
0.57"
312
299
1.0
map
table
Extreme events
Days with PRCP>0.91"
378
1.65"
64
60
1.1
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
7289  by year
0.03"
   
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"
112
2.15"
-0.50
9
30
3.3*
map
table
Extreme events
Days with SNOW>3.0"
22
5.18"
-0.65
2
10
5.0
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"
112
2.15"
0.40
30
13
2.3*
map
table
Extreme events
Days with SNOW>3.0"
22
5.18"
0.54
7
2
3.5
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"
112
2.15"
17
16
1.1
map
table
Extreme events
Days with SNOW>3.0"
22
5.18"
3
2
1.5
map
table

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