Station Number 45401
Prefecture Chiba [ Local Portal ]
Location 千葉県館山市長須賀 館山特別地域気象観測所 (TATEYAMA SHI, CHIBA KEN)
Months of Observations 488
Number of Observations 356,496
Period of Observations
Period Name Lat. Long. Height Anemometer
1974/11/01 -- 1975/03/11 TATEYAMA 34.987N 139.865E 6m 0.0m
1975/03/12 -- 1981/03/26 TATEYAMA 34.987N 139.865E 6m 14.7m
1981/03/27 -- 1985/12/31 TATEYAMA 34.987N 139.865E 6m 14.8m
1986/01/01 -- 1996/02/26 TATEYAMA 34.987N 139.865E 6m 14.8m
1996/02/27 -- 2009/03/17 TATEYAMA 34.987N 139.865E 6m 14.7m
2009/03/18 -- 2016/08/99 TATEYAMA 34.987N 139.865E 6m 21.8m
Real-time Data AMeRAS (AMeDAS Ranking Service)
Past Heavy Rain Data AMeDAS heavy rain
Weather Disaster Reports
Typhoon History
Neighbor Stations
Number Name Distance Azimuth
45346 KYONAN (Chiba) 15.19km 350deg.
45361 KAMOGAWA (Chiba) 25.53km 57deg.

Statistics for the Whole Period

Precipitation

0.0mm - 0.4mm 0.0mm - 0.4mm = 331,089
[331,089 (92.87% / 92.92%)] [331,089 / 356,328 (92.92%)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 11,973
[11,973 (3.36% / 3.36%)] [343,062 / 25,239 (96.28%)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 4,689
[4,689 (1.32% / 1.32%)] [347,751 / 13,266 (97.59%)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 2,586
[2,586 (0.73% / 0.73%)] [350,337 / 8,577 (98.32%)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 1,605
[1,605 (0.45% / 0.45%)] [351,942 / 5,991 (98.77%)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 1,066
[1,066 (0.30% / 0.30%)] [353,008 / 4,386 (99.07%)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 768
[768 (0.22% / 0.22%)] [353,776 / 3,320 (99.28%)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 530
[530 (0.15% / 0.15%)] [354,306 / 2,552 (99.43%)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 413
[413 (0.12% / 0.12%)] [354,719 / 2,022 (99.55%)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 337
[337 (0.09% / 0.09%)] [355,056 / 1,609 (99.64%)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 214
[214 (0.06% / 0.06%)] [355,270 / 1,272 (99.70%)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 190
[190 (0.05% / 0.05%)] [355,460 / 1,058 (99.76%)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 152
[152 (0.04% / 0.04%)] [355,612 / 868 (99.80%)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 114
[114 (0.03% / 0.03%)] [355,726 / 716 (99.83%)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 100
[100 (0.03% / 0.03%)] [355,826 / 602 (99.86%)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 60
[60 (0.02% / 0.02%)] [355,886 / 502 (99.88%)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 63
[63 (0.02% / 0.02%)] [355,949 / 442 (99.89%)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 51
[51 (0.01% / 0.01%)] [356,000 / 379 (99.91%)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 52
[52 (0.01% / 0.01%)] [356,052 / 328 (99.92%)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 27
[27 (0.01% / 0.01%)] [356,079 / 276 (99.93%)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 33
[33 (0.01% / 0.01%)] [356,112 / 249 (99.94%)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 22
[22 (0.01% / 0.01%)] [356,134 / 216 (99.95%)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 25
[25 (0.01% / 0.01%)] [356,159 / 194 (99.95%)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 26
[26 (0.01% / 0.01%)] [356,185 / 169 (99.96%)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 16
[16 (0.00% / 0.00%)] [356,201 / 143 (99.96%)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 14
[14 (0.00% / 0.00%)] [356,215 / 127 (99.97%)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 14
[14 (0.00% / 0.00%)] [356,229 / 113 (99.97%)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 18
[18 (0.01% / 0.01%)] [356,247 / 99 (99.98%)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 9
[9 (0.00% / 0.00%)] [356,256 / 81 (99.98%)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 12
[12 (0.00% / 0.00%)] [356,268 / 72 (99.98%)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 7
[7 (0.00% / 0.00%)] [356,275 / 60 (99.99%)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 6
[6 (0.00% / 0.00%)] [356,281 / 53 (99.99%)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 5
[5 (0.00% / 0.00%)] [356,286 / 47 (99.99%)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 3
[3 (0.00% / 0.00%)] [356,289 / 42 (99.99%)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 2
[2 (0.00% / 0.00%)] [356,291 / 39 (99.99%)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 5
[5 (0.00% / 0.00%)] [356,296 / 37 (99.99%)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 2
[2 (0.00% / 0.00%)] [356,298 / 32 (99.99%)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 8
[8 (0.00% / 0.00%)] [356,306 / 30 (99.99%)]
37.5mm - 38.4mm 37.5mm - 38.4mm = 2
[2 (0.00% / 0.00%)] [356,308 / 22 (99.99%)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 2
[2 (0.00% / 0.00%)] [356,310 / 20 (99.99%)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 3
[3 (0.00% / 0.00%)] [356,313 / 18 (100.00%)]
41.5mm - 42.4mm 41.5mm - 42.4mm = 3
[3 (0.00% / 0.00%)] [356,316 / 15 (100.00%)]
43.5mm - 44.4mm 43.5mm - 44.4mm = 5
[5 (0.00% / 0.00%)] [356,321 / 12 (100.00%)]
44.5mm - 45.4mm 44.5mm - 45.4mm = 2
[2 (0.00% / 0.00%)] [356,323 / 7 (100.00%)]
47.5mm - 48.4mm 47.5mm - 48.4mm = 2
[2 (0.00% / 0.00%)] [356,325 / 5 (100.00%)]
55.5mm - 56.4mm 55.5mm - 56.4mm = 1
[1 (0.00% / 0.00%)] [356,326 / 3 (100.00%)]
57.5mm - 58.4mm 57.5mm - 58.4mm = 1
[1 (0.00% / 0.00%)] [356,327 / 2 (100.00%)]
59.5mm - 60.4mm 59.5mm - 60.4mm = 1
[1 (0.00% / 0.00%)] [356,328 / 1 (100.00%)]

Missing observations (168 / 0.05%)

Wind Direction

Calm Calm = 20,686
[20,686 (5.80% / 5.81%)] [0 / 0 (NA)]
NNE NNE = 26,274
[26,274 (7.37% / 7.37%)] [0 / 0 (NA)]
NE NE = 22,065
[22,065 (6.19% / 6.19%)] [0 / 0 (NA)]
ENE ENE = 19,887
[19,887 (5.58% / 5.58%)] [0 / 0 (NA)]
E E = 25,725
[25,725 (7.22% / 7.22%)] [0 / 0 (NA)]
ESE ESE = 21,696
[21,696 (6.09% / 6.09%)] [0 / 0 (NA)]
SE SE = 23,426
[23,426 (6.57% / 6.57%)] [0 / 0 (NA)]
SSE SSE = 32,967
[32,967 (9.25% / 9.25%)] [0 / 0 (NA)]
S S = 18,457
[18,457 (5.18% / 5.18%)] [0 / 0 (NA)]
SSW SSW = 25,152
[25,152 (7.06% / 7.06%)] [0 / 0 (NA)]
SW SW = 33,191
[33,191 (9.31% / 9.31%)] [0 / 0 (NA)]
WSW WSW = 17,269
[17,269 (4.84% / 4.85%)] [0 / 0 (NA)]
W W = 9,473
[9,473 (2.66% / 2.66%)] [0 / 0 (NA)]
WNW WNW = 13,028
[13,028 (3.65% / 3.66%)] [0 / 0 (NA)]
NW NW = 12,109
[12,109 (3.40% / 3.40%)] [0 / 0 (NA)]
NNW NNW = 11,936
[11,936 (3.35% / 3.35%)] [0 / 0 (NA)]
N N = 23,000
[23,000 (6.45% / 6.45%)] [0 / 0 (NA)]

Missing observations (155 / 0.04%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 21,329
[21,329 (5.98% / 5.99%)] [21,329 / 356,312 (5.99%)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 81,993
[81,993 (23.00% / 23.01%)] [103,322 / 334,983 (29.00%)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 79,401
[79,401 (22.27% / 22.28%)] [182,723 / 252,990 (51.28%)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 61,426
[61,426 (17.23% / 17.24%)] [244,149 / 173,589 (68.52%)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 43,873
[43,873 (12.31% / 12.31%)] [288,022 / 112,163 (80.83%)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 27,401
[27,401 (7.69% / 7.69%)] [315,423 / 68,290 (88.52%)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 17,144
[17,144 (4.81% / 4.81%)] [332,567 / 40,889 (93.34%)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 10,962
[10,962 (3.07% / 3.08%)] [343,529 / 23,745 (96.41%)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 6,581
[6,581 (1.85% / 1.85%)] [350,110 / 12,783 (98.26%)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 3,505
[3,505 (0.98% / 0.98%)] [353,615 / 6,202 (99.24%)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 1,533
[1,533 (0.43% / 0.43%)] [355,148 / 2,697 (99.67%)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 672
[672 (0.19% / 0.19%)] [355,820 / 1,164 (99.86%)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 298
[298 (0.08% / 0.08%)] [356,118 / 492 (99.95%)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 99
[99 (0.03% / 0.03%)] [356,217 / 194 (99.97%)]
13.5m/s - 14.4m/s 13.5m/s - 14.4m/s = 49
[49 (0.01% / 0.01%)] [356,266 / 95 (99.99%)]
14.5m/s - 15.4m/s 14.5m/s - 15.4m/s = 14
[14 (0.00% / 0.00%)] [356,280 / 46 (99.99%)]
15.5m/s - 16.4m/s 15.5m/s - 16.4m/s = 18
[18 (0.01% / 0.01%)] [356,298 / 32 (100.00%)]
16.5m/s - 17.4m/s 16.5m/s - 17.4m/s = 8
[8 (0.00% / 0.00%)] [356,306 / 14 (100.00%)]
17.5m/s - 18.4m/s 17.5m/s - 18.4m/s = 5
[5 (0.00% / 0.00%)] [356,311 / 6 (100.00%)]
18.5m/s - 19.4m/s 18.5m/s - 19.4m/s = 1
[1 (0.00% / 0.00%)] [356,312 / 1 (100.00%)]

Missing observations (184 / 0.05%)

Temperature

-5.5C - -4.6C -5.5C - -4.6C = 33
[33 (0.01% / 0.01%)] [33 / 353,920 (0.01%)]
-4.5C - -3.6C -4.5C - -3.6C = 58
[58 (0.02% / 0.02%)] [91 / 353,887 (0.03%)]
-3.5C - -2.6C -3.5C - -2.6C = 252
[252 (0.07% / 0.07%)] [343 / 353,829 (0.10%)]
-2.5C - -1.6C -2.5C - -1.6C = 634
[634 (0.18% / 0.18%)] [977 / 353,577 (0.28%)]
-1.5C - -0.6C -1.5C - -0.6C = 1,398
[1,398 (0.39% / 0.40%)] [2,375 / 352,943 (0.67%)]
-0.5C - 0.4C -0.5C - 0.4C = 5,143
[5,143 (1.44% / 1.45%)] [7,518 / 351,545 (2.12%)]
0.5C - 1.4C 0.5C - 1.4C = 3,849
[3,849 (1.08% / 1.09%)] [11,367 / 346,402 (3.21%)]
1.5C - 2.4C 1.5C - 2.4C = 5,096
[5,096 (1.43% / 1.44%)] [16,463 / 342,553 (4.65%)]
2.5C - 3.4C 2.5C - 3.4C = 6,426
[6,426 (1.80% / 1.82%)] [22,889 / 337,457 (6.47%)]
3.5C - 4.4C 3.5C - 4.4C = 7,899
[7,899 (2.22% / 2.23%)] [30,788 / 331,031 (8.70%)]
4.5C - 5.4C 4.5C - 5.4C = 9,025
[9,025 (2.53% / 2.55%)] [39,813 / 323,132 (11.25%)]
5.5C - 6.4C 5.5C - 6.4C = 10,208
[10,208 (2.86% / 2.88%)] [50,021 / 314,107 (14.13%)]
6.5C - 7.4C 6.5C - 7.4C = 11,305
[11,305 (3.17% / 3.19%)] [61,326 / 303,899 (17.33%)]
7.5C - 8.4C 7.5C - 8.4C = 11,996
[11,996 (3.36% / 3.39%)] [73,322 / 292,594 (20.72%)]
8.5C - 9.4C 8.5C - 9.4C = 12,348
[12,348 (3.46% / 3.49%)] [85,670 / 280,598 (24.21%)]
9.5C - 10.4C 9.5C - 10.4C = 12,458
[12,458 (3.49% / 3.52%)] [98,128 / 268,250 (27.73%)]
10.5C - 11.4C 10.5C - 11.4C = 12,360
[12,360 (3.47% / 3.49%)] [110,488 / 255,792 (31.22%)]
11.5C - 12.4C 11.5C - 12.4C = 12,259
[12,259 (3.44% / 3.46%)] [122,747 / 243,432 (34.68%)]
12.5C - 13.4C 12.5C - 13.4C = 12,366
[12,366 (3.47% / 3.49%)] [135,113 / 231,173 (38.18%)]
13.5C - 14.4C 13.5C - 14.4C = 12,700
[12,700 (3.56% / 3.59%)] [147,813 / 218,807 (41.76%)]
14.5C - 15.4C 14.5C - 15.4C = 13,268
[13,268 (3.72% / 3.75%)] [161,081 / 206,107 (45.51%)]
15.5C - 16.4C 15.5C - 16.4C = 13,644
[13,644 (3.83% / 3.86%)] [174,725 / 192,839 (49.37%)]
16.5C - 17.4C 16.5C - 17.4C = 14,471
[14,471 (4.06% / 4.09%)] [189,196 / 179,195 (53.46%)]
17.5C - 18.4C 17.5C - 18.4C = 15,309
[15,309 (4.29% / 4.33%)] [204,505 / 164,724 (57.78%)]
18.5C - 19.4C 18.5C - 19.4C = 15,639
[15,639 (4.39% / 4.42%)] [220,144 / 149,415 (62.20%)]
19.5C - 20.4C 19.5C - 20.4C = 15,368
[15,368 (4.31% / 4.34%)] [235,512 / 133,776 (66.54%)]
20.5C - 21.4C 20.5C - 21.4C = 15,792
[15,792 (4.43% / 4.46%)] [251,304 / 118,408 (71.01%)]
21.5C - 22.4C 21.5C - 22.4C = 15,334
[15,334 (4.30% / 4.33%)] [266,638 / 102,616 (75.34%)]
22.5C - 23.4C 22.5C - 23.4C = 14,592
[14,592 (4.09% / 4.12%)] [281,230 / 87,282 (79.46%)]
23.5C - 24.4C 23.5C - 24.4C = 14,440
[14,440 (4.05% / 4.08%)] [295,670 / 72,690 (83.54%)]
24.5C - 25.4C 24.5C - 25.4C = 14,276
[14,276 (4.00% / 4.03%)] [309,946 / 58,250 (87.58%)]
25.5C - 26.4C 25.5C - 26.4C = 13,278
[13,278 (3.72% / 3.75%)] [323,224 / 43,974 (91.33%)]
26.5C - 27.4C 26.5C - 27.4C = 10,057
[10,057 (2.82% / 2.84%)] [333,281 / 30,696 (94.17%)]
27.5C - 28.4C 27.5C - 28.4C = 6,994
[6,994 (1.96% / 1.98%)] [340,275 / 20,639 (96.14%)]
28.5C - 29.4C 28.5C - 29.4C = 5,568
[5,568 (1.56% / 1.57%)] [345,843 / 13,645 (97.72%)]
29.5C - 30.4C 29.5C - 30.4C = 4,208
[4,208 (1.18% / 1.19%)] [350,051 / 8,077 (98.91%)]
30.5C - 31.4C 30.5C - 31.4C = 2,520
[2,520 (0.71% / 0.71%)] [352,571 / 3,869 (99.62%)]
31.5C - 32.4C 31.5C - 32.4C = 1,007
[1,007 (0.28% / 0.28%)] [353,578 / 1,349 (99.90%)]
32.5C - 33.4C 32.5C - 33.4C = 268
[268 (0.08% / 0.08%)] [353,846 / 342 (99.98%)]
33.5C - 34.4C 33.5C - 34.4C = 61
[61 (0.02% / 0.02%)] [353,907 / 74 (100.00%)]
34.5C - 35.4C 34.5C - 35.4C = 12
[12 (0.00% / 0.00%)] [353,919 / 13 (100.00%)]
35.5C - 36.4C 35.5C - 36.4C = 1
[1 (0.00% / 0.00%)] [353,920 / 1 (100.00%)]

Missing observations (2,576 / 0.72%)

Sunshine Duration

0.0h 0.0h = 240,657
[240,657 (67.51% / 67.64%)] [240,657 / 355,817 (67.64%)]
0.1h 0.1h = 8,972
[8,972 (2.52% / 2.52%)] [249,629 / 115,160 (70.16%)]
0.2h 0.2h = 7,070
[7,070 (1.98% / 1.99%)] [256,699 / 106,188 (72.14%)]
0.3h 0.3h = 6,323
[6,323 (1.77% / 1.78%)] [263,022 / 99,118 (73.92%)]
0.4h 0.4h = 5,806
[5,806 (1.63% / 1.63%)] [268,828 / 92,795 (75.55%)]
0.5h 0.5h = 5,615
[5,615 (1.58% / 1.58%)] [274,443 / 86,989 (77.13%)]
0.6h 0.6h = 5,644
[5,644 (1.58% / 1.59%)] [280,087 / 81,374 (78.72%)]
0.7h 0.7h = 6,152
[6,152 (1.73% / 1.73%)] [286,239 / 75,730 (80.45%)]
0.8h 0.8h = 6,993
[6,993 (1.96% / 1.97%)] [293,232 / 69,578 (82.41%)]
0.9h 0.9h = 9,407
[9,407 (2.64% / 2.64%)] [302,639 / 62,585 (85.05%)]
1.0h 1.0h = 53,178
[53,178 (14.92% / 14.95%)] [355,817 / 53,178 (100.00%)]

Missing observations (679 / 0.19%)