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 504
Number of Observations 368,184
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 -- 2017/12/99 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 = 341,858
[341,858 (92.85% / 92.89%)] [341,858 / 368,016 (92.89)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 12,394
[12,394 (3.37% / 3.37%)] [354,252 / 26,158 (96.26)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 4,877
[4,877 (1.32% / 1.33%)] [359,129 / 13,764 (97.59)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 2,685
[2,685 (0.73% / 0.73%)] [361,814 / 8,887 (98.31)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 1,650
[1,650 (0.45% / 0.45%)] [363,464 / 6,202 (98.76)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 1,099
[1,099 (0.30% / 0.30%)] [364,563 / 4,552 (99.06)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 803
[803 (0.22% / 0.22%)] [365,366 / 3,453 (99.28)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 543
[543 (0.15% / 0.15%)] [365,909 / 2,650 (99.43)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 428
[428 (0.12% / 0.12%)] [366,337 / 2,107 (99.54)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 350
[350 (0.10% / 0.10%)] [366,687 / 1,679 (99.64)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 221
[221 (0.06% / 0.06%)] [366,908 / 1,329 (99.70)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 201
[201 (0.05% / 0.05%)] [367,109 / 1,108 (99.75)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 155
[155 (0.04% / 0.04%)] [367,264 / 907 (99.80)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 123
[123 (0.03% / 0.03%)] [367,387 / 752 (99.83)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 105
[105 (0.03% / 0.03%)] [367,492 / 629 (99.86)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 63
[63 (0.02% / 0.02%)] [367,555 / 524 (99.87)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 66
[66 (0.02% / 0.02%)] [367,621 / 461 (99.89)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 51
[51 (0.01% / 0.01%)] [367,672 / 395 (99.91)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 54
[54 (0.01% / 0.01%)] [367,726 / 344 (99.92)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 28
[28 (0.01% / 0.01%)] [367,754 / 290 (99.93)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 39
[39 (0.01% / 0.01%)] [367,793 / 262 (99.94)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 25
[25 (0.01% / 0.01%)] [367,818 / 223 (99.95)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 25
[25 (0.01% / 0.01%)] [367,843 / 198 (99.95)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 27
[27 (0.01% / 0.01%)] [367,870 / 173 (99.96)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 16
[16 (0.00% / 0.00%)] [367,886 / 146 (99.96)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 15
[15 (0.00% / 0.00%)] [367,901 / 130 (99.97)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 14
[14 (0.00% / 0.00%)] [367,915 / 115 (99.97)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 18
[18 (0.00% / 0.00%)] [367,933 / 101 (99.98)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 9
[9 (0.00% / 0.00%)] [367,942 / 83 (99.98)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 12
[12 (0.00% / 0.00%)] [367,954 / 74 (99.98)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 7
[7 (0.00% / 0.00%)] [367,961 / 62 (99.99)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 6
[6 (0.00% / 0.00%)] [367,967 / 55 (99.99)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 5
[5 (0.00% / 0.00%)] [367,972 / 49 (99.99)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 3
[3 (0.00% / 0.00%)] [367,975 / 44 (99.99)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 2
[2 (0.00% / 0.00%)] [367,977 / 41 (99.99)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 5
[5 (0.00% / 0.00%)] [367,982 / 39 (99.99)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 2
[2 (0.00% / 0.00%)] [367,984 / 34 (99.99)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 8
[8 (0.00% / 0.00%)] [367,992 / 32 (99.99)]
37.5mm - 38.4mm 37.5mm - 38.4mm = 2
[2 (0.00% / 0.00%)] [367,994 / 24 (99.99)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 2
[2 (0.00% / 0.00%)] [367,996 / 22 (99.99)]
39.5mm - 40.4mm 39.5mm - 40.4mm = 1
[1 (0.00% / 0.00%)] [367,997 / 20 (99.99)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 3
[3 (0.00% / 0.00%)] [368,000 / 19 (100.00)]
41.5mm - 42.4mm 41.5mm - 42.4mm = 3
[3 (0.00% / 0.00%)] [368,003 / 16 (100.00)]
43.5mm - 44.4mm 43.5mm - 44.4mm = 5
[5 (0.00% / 0.00%)] [368,008 / 13 (100.00)]
44.5mm - 45.4mm 44.5mm - 45.4mm = 2
[2 (0.00% / 0.00%)] [368,010 / 8 (100.00)]
47.5mm - 48.4mm 47.5mm - 48.4mm = 2
[2 (0.00% / 0.00%)] [368,012 / 6 (100.00)]
49.5mm - 50.4mm 49.5mm - 50.4mm = 1
[1 (0.00% / 0.00%)] [368,013 / 4 (100.00)]
55.5mm - 56.4mm 55.5mm - 56.4mm = 1
[1 (0.00% / 0.00%)] [368,014 / 3 (100.00)]
57.5mm - 58.4mm 57.5mm - 58.4mm = 1
[1 (0.00% / 0.00%)] [368,015 / 2 (100.00)]
59.5mm - 60.4mm 59.5mm - 60.4mm = 1
[1 (0.00% / 0.00%)] [368,016 / 1 (100.00)]

Missing observations (168 / 0.05%)

Wind Direction

Calm Calm = 20,718
[20,718 (5.63% / 5.63%)]
NNE NNE = 27,144
[27,144 (7.37% / 7.38%)]
NE NE = 22,818
[22,818 (6.20% / 6.20%)]
ENE ENE = 20,618
[20,618 (5.60% / 5.60%)]
E E = 26,540
[26,540 (7.21% / 7.21%)]
ESE ESE = 22,528
[22,528 (6.12% / 6.12%)]
SE SE = 24,527
[24,527 (6.66% / 6.66%)]
SSE SSE = 34,010
[34,010 (9.24% / 9.24%)]
S S = 19,012
[19,012 (5.16% / 5.17%)]
SSW SSW = 25,990
[25,990 (7.06% / 7.06%)]
SW SW = 34,125
[34,125 (9.27% / 9.27%)]
WSW WSW = 17,822
[17,822 (4.84% / 4.84%)]
W W = 9,806
[9,806 (2.66% / 2.66%)]
WNW WNW = 13,552
[13,552 (3.68% / 3.68%)]
NW NW = 12,526
[12,526 (3.40% / 3.40%)]
NNW NNW = 12,375
[12,375 (3.36% / 3.36%)]
N N = 23,918
[23,918 (6.50% / 6.50%)]

Missing observations (155 / 0.04%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 21,483
[21,483 (5.83% / 5.84%)] [21,483 / 368,000 (5.84)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 84,454
[84,454 (22.94% / 22.95%)] [105,937 / 346,517 (28.79)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 82,255
[82,255 (22.34% / 22.35%)] [188,192 / 262,063 (51.14)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 63,507
[63,507 (17.25% / 17.26%)] [251,699 / 179,808 (68.40)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 45,497
[45,497 (12.36% / 12.36%)] [297,196 / 116,301 (80.76)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 28,371
[28,371 (7.71% / 7.71%)] [325,567 / 70,804 (88.47)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 17,753
[17,753 (4.82% / 4.82%)] [343,320 / 42,433 (93.29)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 11,352
[11,352 (3.08% / 3.08%)] [354,672 / 24,680 (96.38)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 6,830
[6,830 (1.86% / 1.86%)] [361,502 / 13,328 (98.23)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 3,637
[3,637 (0.99% / 0.99%)] [365,139 / 6,498 (99.22)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 1,618
[1,618 (0.44% / 0.44%)] [366,757 / 2,861 (99.66)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 709
[709 (0.19% / 0.19%)] [367,466 / 1,243 (99.85)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 317
[317 (0.09% / 0.09%)] [367,783 / 534 (99.94)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 114
[114 (0.03% / 0.03%)] [367,897 / 217 (99.97)]
13.5m/s - 14.4m/s 13.5m/s - 14.4m/s = 51
[51 (0.01% / 0.01%)] [367,948 / 103 (99.99)]
14.5m/s - 15.4m/s 14.5m/s - 15.4m/s = 17
[17 (0.00% / 0.00%)] [367,965 / 52 (99.99)]
15.5m/s - 16.4m/s 15.5m/s - 16.4m/s = 18
[18 (0.00% / 0.00%)] [367,983 / 35 (100.00)]
16.5m/s - 17.4m/s 16.5m/s - 17.4m/s = 9
[9 (0.00% / 0.00%)] [367,992 / 17 (100.00)]
17.5m/s - 18.4m/s 17.5m/s - 18.4m/s = 7
[7 (0.00% / 0.00%)] [367,999 / 8 (100.00)]
18.5m/s - 19.4m/s 18.5m/s - 19.4m/s = 1
[1 (0.00% / 0.00%)] [368,000 / 1 (100.00)]

Missing observations (184 / 0.05%)

Temperature

-5.5C - -4.6C -5.5C - -4.6C = 33
[33 (0.01% / 0.01%)] [33 / 365,608 (0.01)]
-4.5C - -3.6C -4.5C - -3.6C = 58
[58 (0.02% / 0.02%)] [91 / 365,575 (0.02)]
-3.5C - -2.6C -3.5C - -2.6C = 258
[258 (0.07% / 0.07%)] [349 / 365,517 (0.10)]
-2.5C - -1.6C -2.5C - -1.6C = 647
[647 (0.18% / 0.18%)] [996 / 365,259 (0.27)]
-1.5C - -0.6C -1.5C - -0.6C = 1,424
[1,424 (0.39% / 0.39%)] [2,420 / 364,612 (0.66)]
-0.5C - 0.4C -0.5C - 0.4C = 5,277
[5,277 (1.43% / 1.44%)] [7,697 / 363,188 (2.11)]
0.5C - 1.4C 0.5C - 1.4C = 3,967
[3,967 (1.08% / 1.09%)] [11,664 / 357,911 (3.19)]
1.5C - 2.4C 1.5C - 2.4C = 5,245
[5,245 (1.42% / 1.43%)] [16,909 / 353,944 (4.62)]
2.5C - 3.4C 2.5C - 3.4C = 6,634
[6,634 (1.80% / 1.81%)] [23,543 / 348,699 (6.44)]
3.5C - 4.4C 3.5C - 4.4C = 8,134
[8,134 (2.21% / 2.22%)] [31,677 / 342,065 (8.66)]
4.5C - 5.4C 4.5C - 5.4C = 9,305
[9,305 (2.53% / 2.55%)] [40,982 / 333,931 (11.21)]
5.5C - 6.4C 5.5C - 6.4C = 10,488
[10,488 (2.85% / 2.87%)] [51,470 / 324,626 (14.08)]
6.5C - 7.4C 6.5C - 7.4C = 11,629
[11,629 (3.16% / 3.18%)] [63,099 / 314,138 (17.26)]
7.5C - 8.4C 7.5C - 8.4C = 12,323
[12,323 (3.35% / 3.37%)] [75,422 / 302,509 (20.63)]
8.5C - 9.4C 8.5C - 9.4C = 12,785
[12,785 (3.47% / 3.50%)] [88,207 / 290,186 (24.13)]
9.5C - 10.4C 9.5C - 10.4C = 12,937
[12,937 (3.51% / 3.54%)] [101,144 / 277,401 (27.66)]
10.5C - 11.4C 10.5C - 11.4C = 12,830
[12,830 (3.48% / 3.51%)] [113,974 / 264,464 (31.17)]
11.5C - 12.4C 11.5C - 12.4C = 12,716
[12,716 (3.45% / 3.48%)] [126,690 / 251,634 (34.65)]
12.5C - 13.4C 12.5C - 13.4C = 12,824
[12,824 (3.48% / 3.51%)] [139,514 / 238,918 (38.16)]
13.5C - 14.4C 13.5C - 14.4C = 13,144
[13,144 (3.57% / 3.60%)] [152,658 / 226,094 (41.75)]
14.5C - 15.4C 14.5C - 15.4C = 13,685
[13,685 (3.72% / 3.74%)] [166,343 / 212,950 (45.50)]
15.5C - 16.4C 15.5C - 16.4C = 14,094
[14,094 (3.83% / 3.85%)] [180,437 / 199,265 (49.35)]
16.5C - 17.4C 16.5C - 17.4C = 14,937
[14,937 (4.06% / 4.09%)] [195,374 / 185,171 (53.44)]
17.5C - 18.4C 17.5C - 18.4C = 15,775
[15,775 (4.28% / 4.31%)] [211,149 / 170,234 (57.75)]
18.5C - 19.4C 18.5C - 19.4C = 16,092
[16,092 (4.37% / 4.40%)] [227,241 / 154,459 (62.15)]
19.5C - 20.4C 19.5C - 20.4C = 15,820
[15,820 (4.30% / 4.33%)] [243,061 / 138,367 (66.48)]
20.5C - 21.4C 20.5C - 21.4C = 16,321
[16,321 (4.43% / 4.46%)] [259,382 / 122,547 (70.95)]
21.5C - 22.4C 21.5C - 22.4C = 15,818
[15,818 (4.30% / 4.33%)] [275,200 / 106,226 (75.27)]
22.5C - 23.4C 22.5C - 23.4C = 15,092
[15,092 (4.10% / 4.13%)] [290,292 / 90,408 (79.40)]
23.5C - 24.4C 23.5C - 24.4C = 15,008
[15,008 (4.08% / 4.10%)] [305,300 / 75,316 (83.50)]
24.5C - 25.4C 24.5C - 25.4C = 14,785
[14,785 (4.02% / 4.04%)] [320,085 / 60,308 (87.55)]
25.5C - 26.4C 25.5C - 26.4C = 13,737
[13,737 (3.73% / 3.76%)] [333,822 / 45,523 (91.31)]
26.5C - 27.4C 26.5C - 27.4C = 10,418
[10,418 (2.83% / 2.85%)] [344,240 / 31,786 (94.16)]
27.5C - 28.4C 27.5C - 28.4C = 7,270
[7,270 (1.97% / 1.99%)] [351,510 / 21,368 (96.14)]
28.5C - 29.4C 28.5C - 29.4C = 5,761
[5,761 (1.56% / 1.58%)] [357,271 / 14,098 (97.72)]
29.5C - 30.4C 29.5C - 30.4C = 4,356
[4,356 (1.18% / 1.19%)] [361,627 / 8,337 (98.91)]
30.5C - 31.4C 30.5C - 31.4C = 2,588
[2,588 (0.70% / 0.71%)] [364,215 / 3,981 (99.62)]
31.5C - 32.4C 31.5C - 32.4C = 1,033
[1,033 (0.28% / 0.28%)] [365,248 / 1,393 (99.90)]
32.5C - 33.4C 32.5C - 33.4C = 280
[280 (0.08% / 0.08%)] [365,528 / 360 (99.98)]
33.5C - 34.4C 33.5C - 34.4C = 67
[67 (0.02% / 0.02%)] [365,595 / 80 (100.00)]
34.5C - 35.4C 34.5C - 35.4C = 12
[12 (0.00% / 0.00%)] [365,607 / 13 (100.00)]
35.5C - 36.4C 35.5C - 36.4C = 1
[1 (0.00% / 0.00%)] [365,608 / 1 (100.00)]

Missing observations (2,576 / 0.70%)

Sunshine Duration

0.0h 0.0h = 248,583
[248,583 (67.52% / 67.64%)] [248,583 / 367,503 (67.64)]
0.1h 0.1h = 9,319
[9,319 (2.53% / 2.54%)] [257,902 / 118,920 (70.18)]
0.2h 0.2h = 7,314
[7,314 (1.99% / 1.99%)] [265,216 / 109,601 (72.17)]
0.3h 0.3h = 6,544
[6,544 (1.78% / 1.78%)] [271,760 / 102,287 (73.95)]
0.4h 0.4h = 6,010
[6,010 (1.63% / 1.64%)] [277,770 / 95,743 (75.58)]
0.5h 0.5h = 5,809
[5,809 (1.58% / 1.58%)] [283,579 / 89,733 (77.16)]
0.6h 0.6h = 5,841
[5,841 (1.59% / 1.59%)] [289,420 / 83,924 (78.75)]
0.7h 0.7h = 6,363
[6,363 (1.73% / 1.73%)] [295,783 / 78,083 (80.48)]
0.8h 0.8h = 7,232
[7,232 (1.96% / 1.97%)] [303,015 / 71,720 (82.45)]
0.9h 0.9h = 9,724
[9,724 (2.64% / 2.65%)] [312,739 / 64,488 (85.10)]
1.0h 1.0h = 54,764
[54,764 (14.87% / 14.90%)] [367,503 / 54,764 (100.00)]

Missing observations (681 / 0.18%)