Station Number 31281
Prefecture Aomori [ Local Portal ]
Location
Months of Observations 78
Number of Observations 56,746
Period of Observations
Period Name Lat. Long. Height Anemometer
1975/05/21 -- 1976/11/19 ROKKASHO 40.953N 141.317E 57m 0.0m
1976/11/20 -- 1982/09/21 ROKKASHO 40.953N 141.317E 57m 6.5m
Past Heavy Rain Data AMeDAS heavy rain
Weather Disaster Reports
Typhoon History
Neighbor Stations
Number Name Distance Azimuth
31336 ROKKASHO (Aomori) 8.45km 206deg.
31332 NOHEJI (Aomori) 15.23km 240deg.
31916 (Aomori) 15.23km 240deg.
31331 NOHEJI (Aomori) 21.21km 237deg.
31915 NOHEJI (Aomori) 21.21km 237deg.

Statistics for the Whole Period

Precipitation

0.0mm - 0.4mm 0.0mm - 0.4mm = 51,967
[51,967 (91.58% / 92.35%)] [51,967 / 56,271 (92.35%)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 2,558
[2,558 (4.51% / 4.55%)] [54,525 / 4,304 (96.90%)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 799
[799 (1.41% / 1.42%)] [55,324 / 1,746 (98.32%)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 373
[373 (0.66% / 0.66%)] [55,697 / 947 (98.98%)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 188
[188 (0.33% / 0.33%)] [55,885 / 574 (99.31%)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 119
[119 (0.21% / 0.21%)] [56,004 / 386 (99.53%)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 80
[80 (0.14% / 0.14%)] [56,084 / 267 (99.67%)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 59
[59 (0.10% / 0.10%)] [56,143 / 187 (99.77%)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 37
[37 (0.07% / 0.07%)] [56,180 / 128 (99.84%)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 18
[18 (0.03% / 0.03%)] [56,198 / 91 (99.87%)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 14
[14 (0.02% / 0.02%)] [56,212 / 73 (99.90%)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 10
[10 (0.02% / 0.02%)] [56,222 / 59 (99.91%)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 13
[13 (0.02% / 0.02%)] [56,235 / 49 (99.94%)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 8
[8 (0.01% / 0.01%)] [56,243 / 36 (99.95%)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 5
[5 (0.01% / 0.01%)] [56,248 / 28 (99.96%)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 6
[6 (0.01% / 0.01%)] [56,254 / 23 (99.97%)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 1
[1 (0.00% / 0.00%)] [56,255 / 17 (99.97%)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 3
[3 (0.01% / 0.01%)] [56,258 / 16 (99.98%)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 1
[1 (0.00% / 0.00%)] [56,259 / 13 (99.98%)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 1
[1 (0.00% / 0.00%)] [56,260 / 12 (99.98%)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 2
[2 (0.00% / 0.00%)] [56,262 / 11 (99.98%)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 2
[2 (0.00% / 0.00%)] [56,264 / 9 (99.99%)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 1
[1 (0.00% / 0.00%)] [56,265 / 7 (99.99%)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 2
[2 (0.00% / 0.00%)] [56,267 / 6 (99.99%)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 1
[1 (0.00% / 0.00%)] [56,268 / 4 (99.99%)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 1
[1 (0.00% / 0.00%)] [56,269 / 3 (100.00%)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 1
[1 (0.00% / 0.00%)] [56,270 / 2 (100.00%)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 1
[1 (0.00% / 0.00%)] [56,271 / 1 (100.00%)]

Missing observations (475 / 0.84%)

Wind Direction

Calm Calm = 5,972
[5,972 (10.52% / 11.78%)] [0 / 0 (NA)]
NNE NNE = 431
[431 (0.76% / 0.85%)] [0 / 0 (NA)]
NE NE = 1,236
[1,236 (2.18% / 2.44%)] [0 / 0 (NA)]
ENE ENE = 5,430
[5,430 (9.57% / 10.71%)] [0 / 0 (NA)]
E E = 4,956
[4,956 (8.73% / 9.77%)] [0 / 0 (NA)]
ESE ESE = 2,824
[2,824 (4.98% / 5.57%)] [0 / 0 (NA)]
SE SE = 1,306
[1,306 (2.30% / 2.58%)] [0 / 0 (NA)]
SSE SSE = 743
[743 (1.31% / 1.47%)] [0 / 0 (NA)]
S S = 521
[521 (0.92% / 1.03%)] [0 / 0 (NA)]
SSW SSW = 1,261
[1,261 (2.22% / 2.49%)] [0 / 0 (NA)]
SW SW = 2,242
[2,242 (3.95% / 4.42%)] [0 / 0 (NA)]
WSW WSW = 7,665
[7,665 (13.51% / 15.11%)] [0 / 0 (NA)]
W W = 8,150
[8,150 (14.36% / 16.07%)] [0 / 0 (NA)]
WNW WNW = 4,494
[4,494 (7.92% / 8.86%)] [0 / 0 (NA)]
NW NW = 2,174
[2,174 (3.83% / 4.29%)] [0 / 0 (NA)]
NNW NNW = 861
[861 (1.52% / 1.70%)] [0 / 0 (NA)]
N N = 446
[446 (0.79% / 0.88%)] [0 / 0 (NA)]

Missing observations (6,034 / 10.63%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 5,972
[5,972 (10.52% / 11.70%)] [5,972 / 51,044 (11.70%)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 11,641
[11,641 (20.51% / 22.81%)] [17,613 / 45,072 (34.51%)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 11,178
[11,178 (19.70% / 21.90%)] [28,791 / 33,431 (56.40%)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 8,975
[8,975 (15.82% / 17.58%)] [37,766 / 22,253 (73.99%)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 5,934
[5,934 (10.46% / 11.63%)] [43,700 / 13,278 (85.61%)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 3,832
[3,832 (6.75% / 7.51%)] [47,532 / 7,344 (93.12%)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 2,034
[2,034 (3.58% / 3.98%)] [49,566 / 3,512 (97.10%)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 906
[906 (1.60% / 1.77%)] [50,472 / 1,478 (98.88%)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 356
[356 (0.63% / 0.70%)] [50,828 / 572 (99.58%)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 130
[130 (0.23% / 0.25%)] [50,958 / 216 (99.83%)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 50
[50 (0.09% / 0.10%)] [51,008 / 86 (99.93%)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 19
[19 (0.03% / 0.04%)] [51,027 / 36 (99.97%)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 8
[8 (0.01% / 0.02%)] [51,035 / 17 (99.98%)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 5
[5 (0.01% / 0.01%)] [51,040 / 9 (99.99%)]
13.5m/s - 14.4m/s 13.5m/s - 14.4m/s = 1
[1 (0.00% / 0.00%)] [51,041 / 4 (99.99%)]
15.5m/s - 16.4m/s 15.5m/s - 16.4m/s = 2
[2 (0.00% / 0.00%)] [51,043 / 3 (100.00%)]
16.5m/s - 17.4m/s 16.5m/s - 17.4m/s = 1
[1 (0.00% / 0.00%)] [51,044 / 1 (100.00%)]

Missing observations (5,702 / 10.05%)

Temperature

-14.5C - -13.6C -14.5C - -13.6C = 1
[1 (0.00% / 0.00%)] [1 / 50,426 (0.00%)]
-13.5C - -12.6C -13.5C - -12.6C = 1
[1 (0.00% / 0.00%)] [2 / 50,425 (0.00%)]
-12.5C - -11.6C -12.5C - -11.6C = 8
[8 (0.01% / 0.02%)] [10 / 50,424 (0.02%)]
-11.5C - -10.6C -11.5C - -10.6C = 4
[4 (0.01% / 0.01%)] [14 / 50,416 (0.03%)]
-10.5C - -9.6C -10.5C - -9.6C = 4
[4 (0.01% / 0.01%)] [18 / 50,412 (0.04%)]
-9.5C - -8.6C -9.5C - -8.6C = 33
[33 (0.06% / 0.07%)] [51 / 50,408 (0.10%)]
-8.5C - -7.6C -8.5C - -7.6C = 74
[74 (0.13% / 0.15%)] [125 / 50,375 (0.25%)]
-7.5C - -6.6C -7.5C - -6.6C = 215
[215 (0.38% / 0.43%)] [340 / 50,301 (0.67%)]
-6.5C - -5.6C -6.5C - -5.6C = 339
[339 (0.60% / 0.67%)] [679 / 50,086 (1.35%)]
-5.5C - -4.6C -5.5C - -4.6C = 650
[650 (1.15% / 1.29%)] [1,329 / 49,747 (2.64%)]
-4.5C - -3.6C -4.5C - -3.6C = 1,063
[1,063 (1.87% / 2.11%)] [2,392 / 49,097 (4.74%)]
-3.5C - -2.6C -3.5C - -2.6C = 1,381
[1,381 (2.43% / 2.74%)] [3,773 / 48,034 (7.48%)]
-2.5C - -1.6C -2.5C - -1.6C = 1,587
[1,587 (2.80% / 3.15%)] [5,360 / 46,653 (10.63%)]
-1.5C - -0.6C -1.5C - -0.6C = 1,763
[1,763 (3.11% / 3.50%)] [7,123 / 45,066 (14.13%)]
-0.5C - 0.4C -0.5C - 0.4C = 3,845
[3,845 (6.78% / 7.63%)] [10,968 / 43,303 (21.75%)]
0.5C - 1.4C 0.5C - 1.4C = 2,077
[2,077 (3.66% / 4.12%)] [13,045 / 39,458 (25.87%)]
1.5C - 2.4C 1.5C - 2.4C = 1,985
[1,985 (3.50% / 3.94%)] [15,030 / 37,381 (29.81%)]
2.5C - 3.4C 2.5C - 3.4C = 1,940
[1,940 (3.42% / 3.85%)] [16,970 / 35,396 (33.65%)]
3.5C - 4.4C 3.5C - 4.4C = 1,784
[1,784 (3.14% / 3.54%)] [18,754 / 33,456 (37.19%)]
4.5C - 5.4C 4.5C - 5.4C = 1,703
[1,703 (3.00% / 3.38%)] [20,457 / 31,672 (40.57%)]
5.5C - 6.4C 5.5C - 6.4C = 1,537
[1,537 (2.71% / 3.05%)] [21,994 / 29,969 (43.62%)]
6.5C - 7.4C 6.5C - 7.4C = 1,384
[1,384 (2.44% / 2.74%)] [23,378 / 28,432 (46.36%)]
7.5C - 8.4C 7.5C - 8.4C = 1,515
[1,515 (2.67% / 3.00%)] [24,893 / 27,048 (49.37%)]
8.5C - 9.4C 8.5C - 9.4C = 1,623
[1,623 (2.86% / 3.22%)] [26,516 / 25,533 (52.58%)]
9.5C - 10.4C 9.5C - 10.4C = 1,492
[1,492 (2.63% / 2.96%)] [28,008 / 23,910 (55.54%)]
10.5C - 11.4C 10.5C - 11.4C = 1,456
[1,456 (2.57% / 2.89%)] [29,464 / 22,418 (58.43%)]
11.5C - 12.4C 11.5C - 12.4C = 1,576
[1,576 (2.78% / 3.13%)] [31,040 / 20,962 (61.56%)]
12.5C - 13.4C 12.5C - 13.4C = 1,727
[1,727 (3.04% / 3.42%)] [32,767 / 19,386 (64.98%)]
13.5C - 14.4C 13.5C - 14.4C = 1,645
[1,645 (2.90% / 3.26%)] [34,412 / 17,659 (68.24%)]
14.5C - 15.4C 14.5C - 15.4C = 1,748
[1,748 (3.08% / 3.47%)] [36,160 / 16,014 (71.71%)]
15.5C - 16.4C 15.5C - 16.4C = 1,955
[1,955 (3.45% / 3.88%)] [38,115 / 14,266 (75.59%)]
16.5C - 17.4C 16.5C - 17.4C = 2,139
[2,139 (3.77% / 4.24%)] [40,254 / 12,311 (79.83%)]
17.5C - 18.4C 17.5C - 18.4C = 1,976
[1,976 (3.48% / 3.92%)] [42,230 / 10,172 (83.75%)]
18.5C - 19.4C 18.5C - 19.4C = 1,839
[1,839 (3.24% / 3.65%)] [44,069 / 8,196 (87.39%)]
19.5C - 20.4C 19.5C - 20.4C = 1,602
[1,602 (2.82% / 3.18%)] [45,671 / 6,357 (90.57%)]
20.5C - 21.4C 20.5C - 21.4C = 1,315
[1,315 (2.32% / 2.61%)] [46,986 / 4,755 (93.18%)]
21.5C - 22.4C 21.5C - 22.4C = 1,039
[1,039 (1.83% / 2.06%)] [48,025 / 3,440 (95.24%)]
22.5C - 23.4C 22.5C - 23.4C = 764
[764 (1.35% / 1.52%)] [48,789 / 2,401 (96.75%)]
23.5C - 24.4C 23.5C - 24.4C = 540
[540 (0.95% / 1.07%)] [49,329 / 1,637 (97.82%)]
24.5C - 25.4C 24.5C - 25.4C = 390
[390 (0.69% / 0.77%)] [49,719 / 1,097 (98.60%)]
25.5C - 26.4C 25.5C - 26.4C = 261
[261 (0.46% / 0.52%)] [49,980 / 707 (99.12%)]
26.5C - 27.4C 26.5C - 27.4C = 181
[181 (0.32% / 0.36%)] [50,161 / 446 (99.47%)]
27.5C - 28.4C 27.5C - 28.4C = 122
[122 (0.21% / 0.24%)] [50,283 / 265 (99.72%)]
28.5C - 29.4C 28.5C - 29.4C = 75
[75 (0.13% / 0.15%)] [50,358 / 143 (99.87%)]
29.5C - 30.4C 29.5C - 30.4C = 45
[45 (0.08% / 0.09%)] [50,403 / 68 (99.95%)]
30.5C - 31.4C 30.5C - 31.4C = 16
[16 (0.03% / 0.03%)] [50,419 / 23 (99.99%)]
31.5C - 32.4C 31.5C - 32.4C = 6
[6 (0.01% / 0.01%)] [50,425 / 7 (100.00%)]
32.5C - 33.4C 32.5C - 33.4C = 1
[1 (0.00% / 0.00%)] [50,426 / 1 (100.00%)]

Missing observations (6,320 / 11.14%)

Sunshine Duration

0.0h 0.0h = 35,410
[35,410 (62.40% / 69.42%)] [35,410 / 51,007 (69.42%)]
0.1h 0.1h = 1,267
[1,267 (2.23% / 2.48%)] [36,677 / 15,597 (71.91%)]
0.2h 0.2h = 946
[946 (1.67% / 1.85%)] [37,623 / 14,330 (73.76%)]
0.3h 0.3h = 889
[889 (1.57% / 1.74%)] [38,512 / 13,384 (75.50%)]
0.4h 0.4h = 809
[809 (1.43% / 1.59%)] [39,321 / 12,495 (77.09%)]
0.5h 0.5h = 829
[829 (1.46% / 1.63%)] [40,150 / 11,686 (78.71%)]
0.6h 0.6h = 799
[799 (1.41% / 1.57%)] [40,949 / 10,857 (80.28%)]
0.7h 0.7h = 844
[844 (1.49% / 1.65%)] [41,793 / 10,058 (81.94%)]
0.8h 0.8h = 904
[904 (1.59% / 1.77%)] [42,697 / 9,214 (83.71%)]
0.9h 0.9h = 1,160
[1,160 (2.04% / 2.27%)] [43,857 / 8,310 (85.98%)]
1.0h 1.0h = 7,150
[7,150 (12.60% / 14.02%)] [51,007 / 7,150 (100.00%)]

Missing observations (5,739 / 10.11%)