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 476
Number of Observations 347,712
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 -- 2015/08/99 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 = 323,138
[323,138 (92.93% / 92.95%)] [323,138 / 347,630 (92.95%)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 11,614
[11,614 (3.34% / 3.34%)] [334,752 / 24,492 (96.30%)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 4,554
[4,554 (1.31% / 1.31%)] [339,306 / 12,878 (97.61%)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 2,522
[2,522 (0.73% / 0.73%)] [341,828 / 8,324 (98.33%)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 1,556
[1,556 (0.45% / 0.45%)] [343,384 / 5,802 (98.78%)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 1,026
[1,026 (0.30% / 0.30%)] [344,410 / 4,246 (99.07%)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 742
[742 (0.21% / 0.21%)] [345,152 / 3,220 (99.29%)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 521
[521 (0.15% / 0.15%)] [345,673 / 2,478 (99.44%)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 401
[401 (0.12% / 0.12%)] [346,074 / 1,957 (99.55%)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 326
[326 (0.09% / 0.09%)] [346,400 / 1,556 (99.65%)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 207
[207 (0.06% / 0.06%)] [346,607 / 1,230 (99.71%)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 186
[186 (0.05% / 0.05%)] [346,793 / 1,023 (99.76%)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 145
[145 (0.04% / 0.04%)] [346,938 / 837 (99.80%)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 108
[108 (0.03% / 0.03%)] [347,046 / 692 (99.83%)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 100
[100 (0.03% / 0.03%)] [347,146 / 584 (99.86%)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 59
[59 (0.02% / 0.02%)] [347,205 / 484 (99.88%)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 63
[63 (0.02% / 0.02%)] [347,268 / 425 (99.90%)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 49
[49 (0.01% / 0.01%)] [347,317 / 362 (99.91%)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 50
[50 (0.01% / 0.01%)] [347,367 / 313 (99.92%)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 26
[26 (0.01% / 0.01%)] [347,393 / 263 (99.93%)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 29
[29 (0.01% / 0.01%)] [347,422 / 237 (99.94%)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 22
[22 (0.01% / 0.01%)] [347,444 / 208 (99.95%)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 22
[22 (0.01% / 0.01%)] [347,466 / 186 (99.95%)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 25
[25 (0.01% / 0.01%)] [347,491 / 164 (99.96%)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 16
[16 (0.00% / 0.00%)] [347,507 / 139 (99.96%)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 14
[14 (0.00% / 0.00%)] [347,521 / 123 (99.97%)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 14
[14 (0.00% / 0.00%)] [347,535 / 109 (99.97%)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 17
[17 (0.00% / 0.00%)] [347,552 / 95 (99.98%)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 8
[8 (0.00% / 0.00%)] [347,560 / 78 (99.98%)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 12
[12 (0.00% / 0.00%)] [347,572 / 70 (99.98%)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 7
[7 (0.00% / 0.00%)] [347,579 / 58 (99.99%)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 6
[6 (0.00% / 0.00%)] [347,585 / 51 (99.99%)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 5
[5 (0.00% / 0.00%)] [347,590 / 45 (99.99%)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 3
[3 (0.00% / 0.00%)] [347,593 / 40 (99.99%)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 2
[2 (0.00% / 0.00%)] [347,595 / 37 (99.99%)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 4
[4 (0.00% / 0.00%)] [347,599 / 35 (99.99%)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 2
[2 (0.00% / 0.00%)] [347,601 / 31 (99.99%)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 8
[8 (0.00% / 0.00%)] [347,609 / 29 (99.99%)]
37.5mm - 38.4mm 37.5mm - 38.4mm = 2
[2 (0.00% / 0.00%)] [347,611 / 21 (99.99%)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 2
[2 (0.00% / 0.00%)] [347,613 / 19 (100.00%)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 3
[3 (0.00% / 0.00%)] [347,616 / 17 (100.00%)]
41.5mm - 42.4mm 41.5mm - 42.4mm = 3
[3 (0.00% / 0.00%)] [347,619 / 14 (100.00%)]
43.5mm - 44.4mm 43.5mm - 44.4mm = 5
[5 (0.00% / 0.00%)] [347,624 / 11 (100.00%)]
44.5mm - 45.4mm 44.5mm - 45.4mm = 2
[2 (0.00% / 0.00%)] [347,626 / 6 (100.00%)]
47.5mm - 48.4mm 47.5mm - 48.4mm = 1
[1 (0.00% / 0.00%)] [347,627 / 4 (100.00%)]
55.5mm - 56.4mm 55.5mm - 56.4mm = 1
[1 (0.00% / 0.00%)] [347,628 / 3 (100.00%)]
57.5mm - 58.4mm 57.5mm - 58.4mm = 1
[1 (0.00% / 0.00%)] [347,629 / 2 (100.00%)]
59.5mm - 60.4mm 59.5mm - 60.4mm = 1
[1 (0.00% / 0.00%)] [347,630 / 1 (100.00%)]

Missing observations (82 / 0.02%)

Wind Direction

Calm Calm = 20,669
[20,669 (5.94% / 5.95%)] [0 / 0 (NA)]
NNE NNE = 25,545
[25,545 (7.35% / 7.35%)] [0 / 0 (NA)]
NE NE = 21,421
[21,421 (6.16% / 6.16%)] [0 / 0 (NA)]
ENE ENE = 19,289
[19,289 (5.55% / 5.55%)] [0 / 0 (NA)]
E E = 24,948
[24,948 (7.17% / 7.18%)] [0 / 0 (NA)]
ESE ESE = 21,037
[21,037 (6.05% / 6.05%)] [0 / 0 (NA)]
SE SE = 22,652
[22,652 (6.51% / 6.52%)] [0 / 0 (NA)]
SSE SSE = 32,190
[32,190 (9.26% / 9.26%)] [0 / 0 (NA)]
S S = 18,026
[18,026 (5.18% / 5.19%)] [0 / 0 (NA)]
SSW SSW = 24,639
[24,639 (7.09% / 7.09%)] [0 / 0 (NA)]
SW SW = 32,587
[32,587 (9.37% / 9.37%)] [0 / 0 (NA)]
WSW WSW = 16,816
[16,816 (4.84% / 4.84%)] [0 / 0 (NA)]
W W = 9,234
[9,234 (2.66% / 2.66%)] [0 / 0 (NA)]
WNW WNW = 12,689
[12,689 (3.65% / 3.65%)] [0 / 0 (NA)]
NW NW = 11,818
[11,818 (3.40% / 3.40%)] [0 / 0 (NA)]
NNW NNW = 11,654
[11,654 (3.35% / 3.35%)] [0 / 0 (NA)]
N N = 22,433
[22,433 (6.45% / 6.45%)] [0 / 0 (NA)]

Missing observations (65 / 0.02%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 21,239
[21,239 (6.11% / 6.11%)] [21,239 / 347,618 (6.11%)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 80,258
[80,258 (23.08% / 23.09%)] [101,497 / 326,379 (29.20%)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 77,233
[77,233 (22.21% / 22.22%)] [178,730 / 246,121 (51.42%)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 59,789
[59,789 (17.19% / 17.20%)] [238,519 / 168,888 (68.62%)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 42,652
[42,652 (12.27% / 12.27%)] [281,171 / 109,099 (80.89%)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 26,640
[26,640 (7.66% / 7.66%)] [307,811 / 66,447 (88.55%)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 16,727
[16,727 (4.81% / 4.81%)] [324,538 / 39,807 (93.36%)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 10,709
[10,709 (3.08% / 3.08%)] [335,247 / 23,080 (96.44%)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 6,423
[6,423 (1.85% / 1.85%)] [341,670 / 12,371 (98.29%)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 3,400
[3,400 (0.98% / 0.98%)] [345,070 / 5,948 (99.27%)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 1,474
[1,474 (0.42% / 0.42%)] [346,544 / 2,548 (99.69%)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 630
[630 (0.18% / 0.18%)] [347,174 / 1,074 (99.87%)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 270
[270 (0.08% / 0.08%)] [347,444 / 444 (99.95%)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 87
[87 (0.03% / 0.03%)] [347,531 / 174 (99.97%)]
13.5m/s - 14.4m/s 13.5m/s - 14.4m/s = 43
[43 (0.01% / 0.01%)] [347,574 / 87 (99.99%)]
14.5m/s - 15.4m/s 14.5m/s - 15.4m/s = 12
[12 (0.00% / 0.00%)] [347,586 / 44 (99.99%)]
15.5m/s - 16.4m/s 15.5m/s - 16.4m/s = 18
[18 (0.01% / 0.01%)] [347,604 / 32 (100.00%)]
16.5m/s - 17.4m/s 16.5m/s - 17.4m/s = 8
[8 (0.00% / 0.00%)] [347,612 / 14 (100.00%)]
17.5m/s - 18.4m/s 17.5m/s - 18.4m/s = 5
[5 (0.00% / 0.00%)] [347,617 / 6 (100.00%)]
18.5m/s - 19.4m/s 18.5m/s - 19.4m/s = 1
[1 (0.00% / 0.00%)] [347,618 / 1 (100.00%)]

Missing observations (94 / 0.03%)

Temperature

-5.5C - -4.6C -5.5C - -4.6C = 33
[33 (0.01% / 0.01%)] [33 / 345,224 (0.01%)]
-4.5C - -3.6C -4.5C - -3.6C = 58
[58 (0.02% / 0.02%)] [91 / 345,191 (0.03%)]
-3.5C - -2.6C -3.5C - -2.6C = 246
[246 (0.07% / 0.07%)] [337 / 345,133 (0.10%)]
-2.5C - -1.6C -2.5C - -1.6C = 629
[629 (0.18% / 0.18%)] [966 / 344,887 (0.28%)]
-1.5C - -0.6C -1.5C - -0.6C = 1,391
[1,391 (0.40% / 0.40%)] [2,357 / 344,258 (0.68%)]
-0.5C - 0.4C -0.5C - 0.4C = 5,078
[5,078 (1.46% / 1.47%)] [7,435 / 342,867 (2.15%)]
0.5C - 1.4C 0.5C - 1.4C = 3,779
[3,779 (1.09% / 1.09%)] [11,214 / 337,789 (3.25%)]
1.5C - 2.4C 1.5C - 2.4C = 5,004
[5,004 (1.44% / 1.45%)] [16,218 / 334,010 (4.70%)]
2.5C - 3.4C 2.5C - 3.4C = 6,307
[6,307 (1.81% / 1.83%)] [22,525 / 329,006 (6.52%)]
3.5C - 4.4C 3.5C - 4.4C = 7,720
[7,720 (2.22% / 2.24%)] [30,245 / 322,699 (8.76%)]
4.5C - 5.4C 4.5C - 5.4C = 8,820
[8,820 (2.54% / 2.55%)] [39,065 / 314,979 (11.32%)]
5.5C - 6.4C 5.5C - 6.4C = 10,026
[10,026 (2.88% / 2.90%)] [49,091 / 306,159 (14.22%)]
6.5C - 7.4C 6.5C - 7.4C = 11,067
[11,067 (3.18% / 3.21%)] [60,158 / 296,133 (17.43%)]
7.5C - 8.4C 7.5C - 8.4C = 11,737
[11,737 (3.38% / 3.40%)] [71,895 / 285,066 (20.83%)]
8.5C - 9.4C 8.5C - 9.4C = 12,114
[12,114 (3.48% / 3.51%)] [84,009 / 273,329 (24.33%)]
9.5C - 10.4C 9.5C - 10.4C = 12,180
[12,180 (3.50% / 3.53%)] [96,189 / 261,215 (27.86%)]
10.5C - 11.4C 10.5C - 11.4C = 12,064
[12,064 (3.47% / 3.49%)] [108,253 / 249,035 (31.36%)]
11.5C - 12.4C 11.5C - 12.4C = 11,950
[11,950 (3.44% / 3.46%)] [120,203 / 236,971 (34.82%)]
12.5C - 13.4C 12.5C - 13.4C = 12,022
[12,022 (3.46% / 3.48%)] [132,225 / 225,021 (38.30%)]
13.5C - 14.4C 13.5C - 14.4C = 12,371
[12,371 (3.56% / 3.58%)] [144,596 / 212,999 (41.88%)]
14.5C - 15.4C 14.5C - 15.4C = 12,926
[12,926 (3.72% / 3.74%)] [157,522 / 200,628 (45.63%)]
15.5C - 16.4C 15.5C - 16.4C = 13,279
[13,279 (3.82% / 3.85%)] [170,801 / 187,702 (49.48%)]
16.5C - 17.4C 16.5C - 17.4C = 14,060
[14,060 (4.04% / 4.07%)] [184,861 / 174,423 (53.55%)]
17.5C - 18.4C 17.5C - 18.4C = 14,913
[14,913 (4.29% / 4.32%)] [199,774 / 160,363 (57.87%)]
18.5C - 19.4C 18.5C - 19.4C = 15,287
[15,287 (4.40% / 4.43%)] [215,061 / 145,450 (62.30%)]
19.5C - 20.4C 19.5C - 20.4C = 14,878
[14,878 (4.28% / 4.31%)] [229,939 / 130,163 (66.61%)]
20.5C - 21.4C 20.5C - 21.4C = 15,305
[15,305 (4.40% / 4.43%)] [245,244 / 115,285 (71.04%)]
21.5C - 22.4C 21.5C - 22.4C = 14,862
[14,862 (4.27% / 4.31%)] [260,106 / 99,980 (75.34%)]
22.5C - 23.4C 22.5C - 23.4C = 14,176
[14,176 (4.08% / 4.11%)] [274,282 / 85,118 (79.45%)]
23.5C - 24.4C 23.5C - 24.4C = 14,079
[14,079 (4.05% / 4.08%)] [288,361 / 70,942 (83.53%)]
24.5C - 25.4C 24.5C - 25.4C = 13,898
[13,898 (4.00% / 4.03%)] [302,259 / 56,863 (87.55%)]
25.5C - 26.4C 25.5C - 26.4C = 12,942
[12,942 (3.72% / 3.75%)] [315,201 / 42,965 (91.30%)]
26.5C - 27.4C 26.5C - 27.4C = 9,821
[9,821 (2.82% / 2.84%)] [325,022 / 30,023 (94.15%)]
27.5C - 28.4C 27.5C - 28.4C = 6,830
[6,830 (1.96% / 1.98%)] [331,852 / 20,202 (96.13%)]
28.5C - 29.4C 28.5C - 29.4C = 5,461
[5,461 (1.57% / 1.58%)] [337,313 / 13,372 (97.71%)]
29.5C - 30.4C 29.5C - 30.4C = 4,113
[4,113 (1.18% / 1.19%)] [341,426 / 7,911 (98.90%)]
30.5C - 31.4C 30.5C - 31.4C = 2,469
[2,469 (0.71% / 0.72%)] [343,895 / 3,798 (99.62%)]
31.5C - 32.4C 31.5C - 32.4C = 994
[994 (0.29% / 0.29%)] [344,889 / 1,329 (99.90%)]
32.5C - 33.4C 32.5C - 33.4C = 265
[265 (0.08% / 0.08%)] [345,154 / 335 (99.98%)]
33.5C - 34.4C 33.5C - 34.4C = 57
[57 (0.02% / 0.02%)] [345,211 / 70 (100.00%)]
34.5C - 35.4C 34.5C - 35.4C = 12
[12 (0.00% / 0.00%)] [345,223 / 13 (100.00%)]
35.5C - 36.4C 35.5C - 36.4C = 1
[1 (0.00% / 0.00%)] [345,224 / 1 (100.00%)]

Missing observations (2,488 / 0.72%)

Sunshine Duration

0.0h 0.0h = 234,700
[234,700 (67.50% / 67.61%)] [234,700 / 347,126 (67.61%)]
0.1h 0.1h = 8,716
[8,716 (2.51% / 2.51%)] [243,416 / 112,426 (70.12%)]
0.2h 0.2h = 6,870
[6,870 (1.98% / 1.98%)] [250,286 / 103,710 (72.10%)]
0.3h 0.3h = 6,166
[6,166 (1.77% / 1.78%)] [256,452 / 96,840 (73.88%)]
0.4h 0.4h = 5,655
[5,655 (1.63% / 1.63%)] [262,107 / 90,674 (75.51%)]
0.5h 0.5h = 5,467
[5,467 (1.57% / 1.57%)] [267,574 / 85,019 (77.08%)]
0.6h 0.6h = 5,488
[5,488 (1.58% / 1.58%)] [273,062 / 79,552 (78.66%)]
0.7h 0.7h = 5,994
[5,994 (1.72% / 1.73%)] [279,056 / 74,064 (80.39%)]
0.8h 0.8h = 6,800
[6,800 (1.96% / 1.96%)] [285,856 / 68,070 (82.35%)]
0.9h 0.9h = 9,194
[9,194 (2.64% / 2.65%)] [295,050 / 61,270 (85.00%)]
1.0h 1.0h = 52,076
[52,076 (14.98% / 15.00%)] [347,126 / 52,076 (100.00%)]

Missing observations (586 / 0.17%)