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 499
Number of Observations 364,512
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 -- 2017/07/99 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 = 338,534
[338,534 (92.87% / 92.92%)] [338,534 / 364,344 (92.92)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 12,256
[12,256 (3.36% / 3.36%)] [350,790 / 25,810 (96.28)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 4,809
[4,809 (1.32% / 1.32%)] [355,599 / 13,554 (97.60)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 2,643
[2,643 (0.73% / 0.73%)] [358,242 / 8,745 (98.33)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 1,633
[1,633 (0.45% / 0.45%)] [359,875 / 6,102 (98.77)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 1,084
[1,084 (0.30% / 0.30%)] [360,959 / 4,469 (99.07)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 792
[792 (0.22% / 0.22%)] [361,751 / 3,385 (99.29)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 539
[539 (0.15% / 0.15%)] [362,290 / 2,593 (99.44)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 418
[418 (0.11% / 0.11%)] [362,708 / 2,054 (99.55)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 345
[345 (0.09% / 0.09%)] [363,053 / 1,636 (99.65)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 218
[218 (0.06% / 0.06%)] [363,271 / 1,291 (99.71)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 195
[195 (0.05% / 0.05%)] [363,466 / 1,073 (99.76)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 152
[152 (0.04% / 0.04%)] [363,618 / 878 (99.80)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 117
[117 (0.03% / 0.03%)] [363,735 / 726 (99.83)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 101
[101 (0.03% / 0.03%)] [363,836 / 609 (99.86)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 60
[60 (0.02% / 0.02%)] [363,896 / 508 (99.88)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 64
[64 (0.02% / 0.02%)] [363,960 / 448 (99.89)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 51
[51 (0.01% / 0.01%)] [364,011 / 384 (99.91)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 53
[53 (0.01% / 0.01%)] [364,064 / 333 (99.92)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 27
[27 (0.01% / 0.01%)] [364,091 / 280 (99.93)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 36
[36 (0.01% / 0.01%)] [364,127 / 253 (99.94)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 22
[22 (0.01% / 0.01%)] [364,149 / 217 (99.95)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 25
[25 (0.01% / 0.01%)] [364,174 / 195 (99.95)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 27
[27 (0.01% / 0.01%)] [364,201 / 170 (99.96)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 16
[16 (0.00% / 0.00%)] [364,217 / 143 (99.97)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 14
[14 (0.00% / 0.00%)] [364,231 / 127 (99.97)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 14
[14 (0.00% / 0.00%)] [364,245 / 113 (99.97)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 18
[18 (0.00% / 0.00%)] [364,263 / 99 (99.98)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 9
[9 (0.00% / 0.00%)] [364,272 / 81 (99.98)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 12
[12 (0.00% / 0.00%)] [364,284 / 72 (99.98)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 7
[7 (0.00% / 0.00%)] [364,291 / 60 (99.99)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 6
[6 (0.00% / 0.00%)] [364,297 / 53 (99.99)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 5
[5 (0.00% / 0.00%)] [364,302 / 47 (99.99)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 3
[3 (0.00% / 0.00%)] [364,305 / 42 (99.99)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 2
[2 (0.00% / 0.00%)] [364,307 / 39 (99.99)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 5
[5 (0.00% / 0.00%)] [364,312 / 37 (99.99)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 2
[2 (0.00% / 0.00%)] [364,314 / 32 (99.99)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 8
[8 (0.00% / 0.00%)] [364,322 / 30 (99.99)]
37.5mm - 38.4mm 37.5mm - 38.4mm = 2
[2 (0.00% / 0.00%)] [364,324 / 22 (99.99)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 2
[2 (0.00% / 0.00%)] [364,326 / 20 (100.00)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 3
[3 (0.00% / 0.00%)] [364,329 / 18 (100.00)]
41.5mm - 42.4mm 41.5mm - 42.4mm = 3
[3 (0.00% / 0.00%)] [364,332 / 15 (100.00)]
43.5mm - 44.4mm 43.5mm - 44.4mm = 5
[5 (0.00% / 0.00%)] [364,337 / 12 (100.00)]
44.5mm - 45.4mm 44.5mm - 45.4mm = 2
[2 (0.00% / 0.00%)] [364,339 / 7 (100.00)]
47.5mm - 48.4mm 47.5mm - 48.4mm = 2
[2 (0.00% / 0.00%)] [364,341 / 5 (100.00)]
55.5mm - 56.4mm 55.5mm - 56.4mm = 1
[1 (0.00% / 0.00%)] [364,342 / 3 (100.00)]
57.5mm - 58.4mm 57.5mm - 58.4mm = 1
[1 (0.00% / 0.00%)] [364,343 / 2 (100.00)]
59.5mm - 60.4mm 59.5mm - 60.4mm = 1
[1 (0.00% / 0.00%)] [364,344 / 1 (100.00)]

Missing observations (168 / 0.05%)

Wind Direction

Calm Calm = 20,709
[20,709 (5.68% / 5.68%)]
NNE NNE = 26,853
[26,853 (7.37% / 7.37%)]
NE NE = 22,542
[22,542 (6.18% / 6.19%)]
ENE ENE = 20,369
[20,369 (5.59% / 5.59%)]
E E = 26,288
[26,288 (7.21% / 7.21%)]
ESE ESE = 22,267
[22,267 (6.11% / 6.11%)]
SE SE = 24,205
[24,205 (6.64% / 6.64%)]
SSE SSE = 33,707
[33,707 (9.25% / 9.25%)]
S S = 18,866
[18,866 (5.18% / 5.18%)]
SSW SSW = 25,830
[25,830 (7.09% / 7.09%)]
SW SW = 33,873
[33,873 (9.29% / 9.30%)]
WSW WSW = 17,595
[17,595 (4.83% / 4.83%)]
W W = 9,679
[9,679 (2.66% / 2.66%)]
WNW WNW = 13,373
[13,373 (3.67% / 3.67%)]
NW NW = 12,396
[12,396 (3.40% / 3.40%)]
NNW NNW = 12,230
[12,230 (3.36% / 3.36%)]
N N = 23,575
[23,575 (6.47% / 6.47%)]

Missing observations (155 / 0.04%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 21,446
[21,446 (5.88% / 5.89%)] [21,446 / 364,328 (5.89)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 83,697
[83,697 (22.96% / 22.97%)] [105,143 / 342,882 (28.86)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 81,303
[81,303 (22.30% / 22.32%)] [186,446 / 259,185 (51.18)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 62,834
[62,834 (17.24% / 17.25%)] [249,280 / 177,882 (68.42)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 44,981
[44,981 (12.34% / 12.35%)] [294,261 / 115,048 (80.77)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 28,091
[28,091 (7.71% / 7.71%)] [322,352 / 70,067 (88.48)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 17,567
[17,567 (4.82% / 4.82%)] [339,919 / 41,976 (93.30)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 11,249
[11,249 (3.09% / 3.09%)] [351,168 / 24,409 (96.39)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 6,754
[6,754 (1.85% / 1.85%)] [357,922 / 13,160 (98.24)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 3,607
[3,607 (0.99% / 0.99%)] [361,529 / 6,406 (99.23)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 1,585
[1,585 (0.43% / 0.44%)] [363,114 / 2,799 (99.67)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 697
[697 (0.19% / 0.19%)] [363,811 / 1,214 (99.86)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 309
[309 (0.08% / 0.08%)] [364,120 / 517 (99.94)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 111
[111 (0.03% / 0.03%)] [364,231 / 208 (99.97)]
13.5m/s - 14.4m/s 13.5m/s - 14.4m/s = 50
[50 (0.01% / 0.01%)] [364,281 / 97 (99.99)]
14.5m/s - 15.4m/s 14.5m/s - 15.4m/s = 15
[15 (0.00% / 0.00%)] [364,296 / 47 (99.99)]
15.5m/s - 16.4m/s 15.5m/s - 16.4m/s = 18
[18 (0.00% / 0.00%)] [364,314 / 32 (100.00)]
16.5m/s - 17.4m/s 16.5m/s - 17.4m/s = 8
[8 (0.00% / 0.00%)] [364,322 / 14 (100.00)]
17.5m/s - 18.4m/s 17.5m/s - 18.4m/s = 5
[5 (0.00% / 0.00%)] [364,327 / 6 (100.00)]
18.5m/s - 19.4m/s 18.5m/s - 19.4m/s = 1
[1 (0.00% / 0.00%)] [364,328 / 1 (100.00)]

Missing observations (184 / 0.05%)

Temperature

-5.5C - -4.6C -5.5C - -4.6C = 33
[33 (0.01% / 0.01%)] [33 / 361,936 (0.01)]
-4.5C - -3.6C -4.5C - -3.6C = 58
[58 (0.02% / 0.02%)] [91 / 361,903 (0.03)]
-3.5C - -2.6C -3.5C - -2.6C = 258
[258 (0.07% / 0.07%)] [349 / 361,845 (0.10)]
-2.5C - -1.6C -2.5C - -1.6C = 646
[646 (0.18% / 0.18%)] [995 / 361,587 (0.27)]
-1.5C - -0.6C -1.5C - -0.6C = 1,419
[1,419 (0.39% / 0.39%)] [2,414 / 360,941 (0.67)]
-0.5C - 0.4C -0.5C - 0.4C = 5,264
[5,264 (1.44% / 1.45%)] [7,678 / 359,522 (2.12)]
0.5C - 1.4C 0.5C - 1.4C = 3,940
[3,940 (1.08% / 1.09%)] [11,618 / 354,258 (3.21)]
1.5C - 2.4C 1.5C - 2.4C = 5,205
[5,205 (1.43% / 1.44%)] [16,823 / 350,318 (4.65)]
2.5C - 3.4C 2.5C - 3.4C = 6,577
[6,577 (1.80% / 1.82%)] [23,400 / 345,113 (6.47)]
3.5C - 4.4C 3.5C - 4.4C = 8,086
[8,086 (2.22% / 2.23%)] [31,486 / 338,536 (8.70)]
4.5C - 5.4C 4.5C - 5.4C = 9,245
[9,245 (2.54% / 2.55%)] [40,731 / 330,450 (11.25)]
5.5C - 6.4C 5.5C - 6.4C = 10,445
[10,445 (2.87% / 2.89%)] [51,176 / 321,205 (14.14)]
6.5C - 7.4C 6.5C - 7.4C = 11,567
[11,567 (3.17% / 3.20%)] [62,743 / 310,760 (17.34)]
7.5C - 8.4C 7.5C - 8.4C = 12,244
[12,244 (3.36% / 3.38%)] [74,987 / 299,193 (20.72)]
8.5C - 9.4C 8.5C - 9.4C = 12,672
[12,672 (3.48% / 3.50%)] [87,659 / 286,949 (24.22)]
9.5C - 10.4C 9.5C - 10.4C = 12,820
[12,820 (3.52% / 3.54%)] [100,479 / 274,277 (27.76)]
10.5C - 11.4C 10.5C - 11.4C = 12,711
[12,711 (3.49% / 3.51%)] [113,190 / 261,457 (31.27)]
11.5C - 12.4C 11.5C - 12.4C = 12,583
[12,583 (3.45% / 3.48%)] [125,773 / 248,746 (34.75)]
12.5C - 13.4C 12.5C - 13.4C = 12,663
[12,663 (3.47% / 3.50%)] [138,436 / 236,163 (38.25)]
13.5C - 14.4C 13.5C - 14.4C = 12,975
[12,975 (3.56% / 3.58%)] [151,411 / 223,500 (41.83)]
14.5C - 15.4C 14.5C - 15.4C = 13,534
[13,534 (3.71% / 3.74%)] [164,945 / 210,525 (45.57)]
15.5C - 16.4C 15.5C - 16.4C = 13,922
[13,922 (3.82% / 3.85%)] [178,867 / 196,991 (49.42)]
16.5C - 17.4C 16.5C - 17.4C = 14,805
[14,805 (4.06% / 4.09%)] [193,672 / 183,069 (53.51)]
17.5C - 18.4C 17.5C - 18.4C = 15,646
[15,646 (4.29% / 4.32%)] [209,318 / 168,264 (57.83)]
18.5C - 19.4C 18.5C - 19.4C = 15,941
[15,941 (4.37% / 4.40%)] [225,259 / 152,618 (62.24)]
19.5C - 20.4C 19.5C - 20.4C = 15,672
[15,672 (4.30% / 4.33%)] [240,931 / 136,677 (66.57)]
20.5C - 21.4C 20.5C - 21.4C = 16,175
[16,175 (4.44% / 4.47%)] [257,106 / 121,005 (71.04)]
21.5C - 22.4C 21.5C - 22.4C = 15,687
[15,687 (4.30% / 4.33%)] [272,793 / 104,830 (75.37)]
22.5C - 23.4C 22.5C - 23.4C = 14,912
[14,912 (4.09% / 4.12%)] [287,705 / 89,143 (79.49)]
23.5C - 24.4C 23.5C - 24.4C = 14,784
[14,784 (4.06% / 4.08%)] [302,489 / 74,231 (83.58)]
24.5C - 25.4C 24.5C - 25.4C = 14,597
[14,597 (4.00% / 4.03%)] [317,086 / 59,447 (87.61)]
25.5C - 26.4C 25.5C - 26.4C = 13,567
[13,567 (3.72% / 3.75%)] [330,653 / 44,850 (91.36)]
26.5C - 27.4C 26.5C - 27.4C = 10,248
[10,248 (2.81% / 2.83%)] [340,901 / 31,283 (94.19)]
27.5C - 28.4C 27.5C - 28.4C = 7,129
[7,129 (1.96% / 1.97%)] [348,030 / 21,035 (96.16)]
28.5C - 29.4C 28.5C - 29.4C = 5,696
[5,696 (1.56% / 1.57%)] [353,726 / 13,906 (97.73)]
29.5C - 30.4C 29.5C - 30.4C = 4,304
[4,304 (1.18% / 1.19%)] [358,030 / 8,210 (98.92)]
30.5C - 31.4C 30.5C - 31.4C = 2,552
[2,552 (0.70% / 0.71%)] [360,582 / 3,906 (99.63)]
31.5C - 32.4C 31.5C - 32.4C = 1,012
[1,012 (0.28% / 0.28%)] [361,594 / 1,354 (99.91)]
32.5C - 33.4C 32.5C - 33.4C = 268
[268 (0.07% / 0.07%)] [361,862 / 342 (99.98)]
33.5C - 34.4C 33.5C - 34.4C = 61
[61 (0.02% / 0.02%)] [361,923 / 74 (100.00)]
34.5C - 35.4C 34.5C - 35.4C = 12
[12 (0.00% / 0.00%)] [361,935 / 13 (100.00)]
35.5C - 36.4C 35.5C - 36.4C = 1
[1 (0.00% / 0.00%)] [361,936 / 1 (100.00)]

Missing observations (2,576 / 0.71%)

Sunshine Duration

0.0h 0.0h = 246,001
[246,001 (67.49% / 67.61%)] [246,001 / 363,832 (67.61)]
0.1h 0.1h = 9,210
[9,210 (2.53% / 2.53%)] [255,211 / 117,831 (70.15)]
0.2h 0.2h = 7,238
[7,238 (1.99% / 1.99%)] [262,449 / 108,621 (72.13)]
0.3h 0.3h = 6,471
[6,471 (1.78% / 1.78%)] [268,920 / 101,383 (73.91)]
0.4h 0.4h = 5,938
[5,938 (1.63% / 1.63%)] [274,858 / 94,912 (75.55)]
0.5h 0.5h = 5,751
[5,751 (1.58% / 1.58%)] [280,609 / 88,974 (77.13)]
0.6h 0.6h = 5,772
[5,772 (1.58% / 1.59%)] [286,381 / 83,223 (78.71)]
0.7h 0.7h = 6,303
[6,303 (1.73% / 1.73%)] [292,684 / 77,451 (80.44)]
0.8h 0.8h = 7,148
[7,148 (1.96% / 1.96%)] [299,832 / 71,148 (82.41)]
0.9h 0.9h = 9,633
[9,633 (2.64% / 2.65%)] [309,465 / 64,000 (85.06)]
1.0h 1.0h = 54,367
[54,367 (14.92% / 14.94%)] [363,832 / 54,367 (100.00)]

Missing observations (680 / 0.19%)