Station Number 45291
Prefecture Chiba [ Local Portal ]
Location 千葉県市原市米沢 (ICHIHARA SHI, CHIBA KEN)
Months of Observations 464
Number of Observations 338,697
Period of Observations
Period Name Lat. Long. Height Anemometer
1978/01/11 -- 1985/11/12 USHIKU 35.397N 140.148E 30m 6.5m
1985/11/13 -- 2002/12/23 USHIKU 35.397N 140.148E 30m 6.5m
2002/12/24 -- 2008/02/14 USHIKU 35.397N 140.148E 30m 9.4m
2008/02/15 -- 2016/08/99 USHIKU 35.397N 140.148E 30m 9.4m
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
45261 MOBARA (Chiba) 14.88km 81deg.
45331 OOTAKI (Chiba) 17.20km 159deg.
45326 SAKAHATA (Chiba) 18.54km 194deg.
45282 KISARAZU (Chiba) 19.29km 258deg.
45281 KISARAZU (Chiba) 21.31km 263deg.
45211 CHIBA (Chiba) 22.15km 352deg.
45212 CHIBA (Chiba) 23.11km 349deg.
45905 (Chiba) 23.11km 349deg.

Statistics for the Whole Period

Precipitation

0.0mm - 0.4mm 0.0mm - 0.4mm = 313,413
[313,413 (92.53% / 92.68%)] [313,413 / 338,168 (92.68%)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 12,916
[12,916 (3.81% / 3.82%)] [326,329 / 24,755 (96.50%)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 4,726
[4,726 (1.40% / 1.40%)] [331,055 / 11,839 (97.90%)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 2,419
[2,419 (0.71% / 0.72%)] [333,474 / 7,113 (98.61%)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 1,354
[1,354 (0.40% / 0.40%)] [334,828 / 4,694 (99.01%)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 879
[879 (0.26% / 0.26%)] [335,707 / 3,340 (99.27%)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 607
[607 (0.18% / 0.18%)] [336,314 / 2,461 (99.45%)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 406
[406 (0.12% / 0.12%)] [336,720 / 1,854 (99.57%)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 317
[317 (0.09% / 0.09%)] [337,037 / 1,448 (99.67%)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 225
[225 (0.07% / 0.07%)] [337,262 / 1,131 (99.73%)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 181
[181 (0.05% / 0.05%)] [337,443 / 906 (99.79%)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 131
[131 (0.04% / 0.04%)] [337,574 / 725 (99.82%)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 117
[117 (0.03% / 0.03%)] [337,691 / 594 (99.86%)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 80
[80 (0.02% / 0.02%)] [337,771 / 477 (99.88%)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 79
[79 (0.02% / 0.02%)] [337,850 / 397 (99.91%)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 41
[41 (0.01% / 0.01%)] [337,891 / 318 (99.92%)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 45
[45 (0.01% / 0.01%)] [337,936 / 277 (99.93%)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 27
[27 (0.01% / 0.01%)] [337,963 / 232 (99.94%)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 23
[23 (0.01% / 0.01%)] [337,986 / 205 (99.95%)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 28
[28 (0.01% / 0.01%)] [338,014 / 182 (99.95%)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 17
[17 (0.01% / 0.01%)] [338,031 / 154 (99.96%)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 9
[9 (0.00% / 0.00%)] [338,040 / 137 (99.96%)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 16
[16 (0.00% / 0.00%)] [338,056 / 128 (99.97%)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 14
[14 (0.00% / 0.00%)] [338,070 / 112 (99.97%)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 9
[9 (0.00% / 0.00%)] [338,079 / 98 (99.97%)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 5
[5 (0.00% / 0.00%)] [338,084 / 89 (99.98%)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 10
[10 (0.00% / 0.00%)] [338,094 / 84 (99.98%)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 11
[11 (0.00% / 0.00%)] [338,105 / 74 (99.98%)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 7
[7 (0.00% / 0.00%)] [338,112 / 63 (99.98%)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 6
[6 (0.00% / 0.00%)] [338,118 / 56 (99.99%)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 5
[5 (0.00% / 0.00%)] [338,123 / 50 (99.99%)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 2
[2 (0.00% / 0.00%)] [338,125 / 45 (99.99%)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 8
[8 (0.00% / 0.00%)] [338,133 / 43 (99.99%)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 5
[5 (0.00% / 0.00%)] [338,138 / 35 (99.99%)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 2
[2 (0.00% / 0.00%)] [338,140 / 30 (99.99%)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 4
[4 (0.00% / 0.00%)] [338,144 / 28 (99.99%)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 6
[6 (0.00% / 0.00%)] [338,150 / 24 (99.99%)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 4
[4 (0.00% / 0.00%)] [338,154 / 18 (100.00%)]
37.5mm - 38.4mm 37.5mm - 38.4mm = 2
[2 (0.00% / 0.00%)] [338,156 / 14 (100.00%)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 1
[1 (0.00% / 0.00%)] [338,157 / 12 (100.00%)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 1
[1 (0.00% / 0.00%)] [338,158 / 11 (100.00%)]
43.5mm - 44.4mm 43.5mm - 44.4mm = 2
[2 (0.00% / 0.00%)] [338,160 / 10 (100.00%)]
44.5mm - 45.4mm 44.5mm - 45.4mm = 2
[2 (0.00% / 0.00%)] [338,162 / 8 (100.00%)]
45.5mm - 46.4mm 45.5mm - 46.4mm = 1
[1 (0.00% / 0.00%)] [338,163 / 6 (100.00%)]
48.5mm - 49.4mm 48.5mm - 49.4mm = 1
[1 (0.00% / 0.00%)] [338,164 / 5 (100.00%)]
51.5mm - 52.4mm 51.5mm - 52.4mm = 1
[1 (0.00% / 0.00%)] [338,165 / 4 (100.00%)]
56.5mm - 57.4mm 56.5mm - 57.4mm = 1
[1 (0.00% / 0.00%)] [338,166 / 3 (100.00%)]
64.5mm - 65.4mm 64.5mm - 65.4mm = 1
[1 (0.00% / 0.00%)] [338,167 / 2 (100.00%)]
79.5mm - 80.4mm 79.5mm - 80.4mm = 1
[1 (0.00% / 0.00%)] [338,168 / 1 (100.00%)]

Missing observations (529 / 0.16%)

Wind Direction

Calm Calm = 68,919
[68,919 (20.35% / 20.37%)] [0 / 0 (NA)]
NNE NNE = 10,861
[10,861 (3.21% / 3.21%)] [0 / 0 (NA)]
NE NE = 11,779
[11,779 (3.48% / 3.48%)] [0 / 0 (NA)]
ENE ENE = 18,194
[18,194 (5.37% / 5.38%)] [0 / 0 (NA)]
E E = 39,577
[39,577 (11.69% / 11.70%)] [0 / 0 (NA)]
ESE ESE = 26,216
[26,216 (7.74% / 7.75%)] [0 / 0 (NA)]
SE SE = 14,049
[14,049 (4.15% / 4.15%)] [0 / 0 (NA)]
SSE SSE = 10,542
[10,542 (3.11% / 3.12%)] [0 / 0 (NA)]
S S = 11,262
[11,262 (3.33% / 3.33%)] [0 / 0 (NA)]
SSW SSW = 15,428
[15,428 (4.56% / 4.56%)] [0 / 0 (NA)]
SW SW = 15,910
[15,910 (4.70% / 4.70%)] [0 / 0 (NA)]
WSW WSW = 9,379
[9,379 (2.77% / 2.77%)] [0 / 0 (NA)]
W W = 5,445
[5,445 (1.61% / 1.61%)] [0 / 0 (NA)]
WNW WNW = 11,147
[11,147 (3.29% / 3.30%)] [0 / 0 (NA)]
NW NW = 25,949
[25,949 (7.66% / 7.67%)] [0 / 0 (NA)]
NNW NNW = 25,178
[25,178 (7.43% / 7.44%)] [0 / 0 (NA)]
N N = 18,447
[18,447 (5.45% / 5.45%)] [0 / 0 (NA)]

Missing observations (415 / 0.12%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 73,242
[73,242 (21.62% / 21.65%)] [73,242 / 338,303 (21.65%)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 116,981
[116,981 (34.54% / 34.58%)] [190,223 / 265,061 (56.23%)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 78,190
[78,190 (23.09% / 23.11%)] [268,413 / 148,080 (79.34%)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 41,223
[41,223 (12.17% / 12.19%)] [309,636 / 69,890 (91.53%)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 17,296
[17,296 (5.11% / 5.11%)] [326,932 / 28,667 (96.64%)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 7,332
[7,332 (2.16% / 2.17%)] [334,264 / 11,371 (98.81%)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 2,790
[2,790 (0.82% / 0.82%)] [337,054 / 4,039 (99.63%)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 899
[899 (0.27% / 0.27%)] [337,953 / 1,249 (99.90%)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 261
[261 (0.08% / 0.08%)] [338,214 / 350 (99.97%)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 61
[61 (0.02% / 0.02%)] [338,275 / 89 (99.99%)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 20
[20 (0.01% / 0.01%)] [338,295 / 28 (100.00%)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 7
[7 (0.00% / 0.00%)] [338,302 / 8 (100.00%)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 1
[1 (0.00% / 0.00%)] [338,303 / 1 (100.00%)]

Missing observations (394 / 0.12%)

Temperature

-8.5C - -7.6C -8.5C - -7.6C = 4
[4 (0.00% / 0.00%)] [4 / 338,400 (0.00%)]
-7.5C - -6.6C -7.5C - -6.6C = 26
[26 (0.01% / 0.01%)] [30 / 338,396 (0.01%)]
-6.5C - -5.6C -6.5C - -5.6C = 139
[139 (0.04% / 0.04%)] [169 / 338,370 (0.05%)]
-5.5C - -4.6C -5.5C - -4.6C = 322
[322 (0.10% / 0.10%)] [491 / 338,231 (0.15%)]
-4.5C - -3.6C -4.5C - -3.6C = 790
[790 (0.23% / 0.23%)] [1,281 / 337,909 (0.38%)]
-3.5C - -2.6C -3.5C - -2.6C = 1,582
[1,582 (0.47% / 0.47%)] [2,863 / 337,119 (0.85%)]
-2.5C - -1.6C -2.5C - -1.6C = 2,475
[2,475 (0.73% / 0.73%)] [5,338 / 335,537 (1.58%)]
-1.5C - -0.6C -1.5C - -0.6C = 3,672
[3,672 (1.08% / 1.09%)] [9,010 / 333,062 (2.66%)]
-0.5C - 0.4C -0.5C - 0.4C = 9,649
[9,649 (2.85% / 2.85%)] [18,659 / 329,390 (5.51%)]
0.5C - 1.4C 0.5C - 1.4C = 6,364
[6,364 (1.88% / 1.88%)] [25,023 / 319,741 (7.39%)]
1.5C - 2.4C 1.5C - 2.4C = 7,152
[7,152 (2.11% / 2.11%)] [32,175 / 313,377 (9.51%)]
2.5C - 3.4C 2.5C - 3.4C = 8,072
[8,072 (2.38% / 2.39%)] [40,247 / 306,225 (11.89%)]
3.5C - 4.4C 3.5C - 4.4C = 9,108
[9,108 (2.69% / 2.69%)] [49,355 / 298,153 (14.58%)]
4.5C - 5.4C 4.5C - 5.4C = 9,589
[9,589 (2.83% / 2.83%)] [58,944 / 289,045 (17.42%)]
5.5C - 6.4C 5.5C - 6.4C = 10,363
[10,363 (3.06% / 3.06%)] [69,307 / 279,456 (20.48%)]
6.5C - 7.4C 6.5C - 7.4C = 10,709
[10,709 (3.16% / 3.16%)] [80,016 / 269,093 (23.65%)]
7.5C - 8.4C 7.5C - 8.4C = 11,011
[11,011 (3.25% / 3.25%)] [91,027 / 258,384 (26.90%)]
8.5C - 9.4C 8.5C - 9.4C = 11,192
[11,192 (3.30% / 3.31%)] [102,219 / 247,373 (30.21%)]
9.5C - 10.4C 9.5C - 10.4C = 11,117
[11,117 (3.28% / 3.29%)] [113,336 / 236,181 (33.49%)]
10.5C - 11.4C 10.5C - 11.4C = 10,768
[10,768 (3.18% / 3.18%)] [124,104 / 225,064 (36.67%)]
11.5C - 12.4C 11.5C - 12.4C = 10,893
[10,893 (3.22% / 3.22%)] [134,997 / 214,296 (39.89%)]
12.5C - 13.4C 12.5C - 13.4C = 11,138
[11,138 (3.29% / 3.29%)] [146,135 / 203,403 (43.18%)]
13.5C - 14.4C 13.5C - 14.4C = 11,305
[11,305 (3.34% / 3.34%)] [157,440 / 192,265 (46.52%)]
14.5C - 15.4C 14.5C - 15.4C = 11,472
[11,472 (3.39% / 3.39%)] [168,912 / 180,960 (49.91%)]
15.5C - 16.4C 15.5C - 16.4C = 12,191
[12,191 (3.60% / 3.60%)] [181,103 / 169,488 (53.52%)]
16.5C - 17.4C 16.5C - 17.4C = 12,854
[12,854 (3.80% / 3.80%)] [193,957 / 157,297 (57.32%)]
17.5C - 18.4C 17.5C - 18.4C = 13,571
[13,571 (4.01% / 4.01%)] [207,528 / 144,443 (61.33%)]
18.5C - 19.4C 18.5C - 19.4C = 13,758
[13,758 (4.06% / 4.07%)] [221,286 / 130,872 (65.39%)]
19.5C - 20.4C 19.5C - 20.4C = 13,450
[13,450 (3.97% / 3.97%)] [234,736 / 117,114 (69.37%)]
20.5C - 21.4C 20.5C - 21.4C = 13,381
[13,381 (3.95% / 3.95%)] [248,117 / 103,664 (73.32%)]
21.5C - 22.4C 21.5C - 22.4C = 13,078
[13,078 (3.86% / 3.86%)] [261,195 / 90,283 (77.19%)]
22.5C - 23.4C 22.5C - 23.4C = 13,273
[13,273 (3.92% / 3.92%)] [274,468 / 77,205 (81.11%)]
23.5C - 24.4C 23.5C - 24.4C = 12,313
[12,313 (3.64% / 3.64%)] [286,781 / 63,932 (84.75%)]
24.5C - 25.4C 24.5C - 25.4C = 11,188
[11,188 (3.30% / 3.31%)] [297,969 / 51,619 (88.05%)]
25.5C - 26.4C 25.5C - 26.4C = 9,525
[9,525 (2.81% / 2.81%)] [307,494 / 40,431 (90.87%)]
26.5C - 27.4C 26.5C - 27.4C = 7,445
[7,445 (2.20% / 2.20%)] [314,939 / 30,906 (93.07%)]
27.5C - 28.4C 27.5C - 28.4C = 5,801
[5,801 (1.71% / 1.71%)] [320,740 / 23,461 (94.78%)]
28.5C - 29.4C 28.5C - 29.4C = 4,617
[4,617 (1.36% / 1.36%)] [325,357 / 17,660 (96.15%)]
29.5C - 30.4C 29.5C - 30.4C = 3,750
[3,750 (1.11% / 1.11%)] [329,107 / 13,043 (97.25%)]
30.5C - 31.4C 30.5C - 31.4C = 3,102
[3,102 (0.92% / 0.92%)] [332,209 / 9,293 (98.17%)]
31.5C - 32.4C 31.5C - 32.4C = 2,593
[2,593 (0.77% / 0.77%)] [334,802 / 6,191 (98.94%)]
32.5C - 33.4C 32.5C - 33.4C = 1,751
[1,751 (0.52% / 0.52%)] [336,553 / 3,598 (99.45%)]
33.5C - 34.4C 33.5C - 34.4C = 1,084
[1,084 (0.32% / 0.32%)] [337,637 / 1,847 (99.77%)]
34.5C - 35.4C 34.5C - 35.4C = 511
[511 (0.15% / 0.15%)] [338,148 / 763 (99.93%)]
35.5C - 36.4C 35.5C - 36.4C = 183
[183 (0.05% / 0.05%)] [338,331 / 252 (99.98%)]
36.5C - 37.4C 36.5C - 37.4C = 51
[51 (0.02% / 0.02%)] [338,382 / 69 (99.99%)]
37.5C - 38.4C 37.5C - 38.4C = 14
[14 (0.00% / 0.00%)] [338,396 / 18 (100.00%)]
38.5C - 39.4C 38.5C - 39.4C = 2
[2 (0.00% / 0.00%)] [338,398 / 4 (100.00%)]
39.5C - 40.4C 39.5C - 40.4C = 2
[2 (0.00% / 0.00%)] [338,400 / 2 (100.00%)]

Missing observations (297 / 0.09%)

Sunshine Duration

0.0h 0.0h = 242,228
[242,228 (71.52% / 71.59%)] [242,228 / 338,372 (71.59%)]
0.1h 0.1h = 7,806
[7,806 (2.30% / 2.31%)] [250,034 / 96,144 (73.89%)]
0.2h 0.2h = 6,137
[6,137 (1.81% / 1.81%)] [256,171 / 88,338 (75.71%)]
0.3h 0.3h = 5,377
[5,377 (1.59% / 1.59%)] [261,548 / 82,201 (77.30%)]
0.4h 0.4h = 5,024
[5,024 (1.48% / 1.48%)] [266,572 / 76,824 (78.78%)]
0.5h 0.5h = 5,033
[5,033 (1.49% / 1.49%)] [271,605 / 71,800 (80.27%)]
0.6h 0.6h = 5,085
[5,085 (1.50% / 1.50%)] [276,690 / 66,767 (81.77%)]
0.7h 0.7h = 5,566
[5,566 (1.64% / 1.64%)] [282,256 / 61,682 (83.42%)]
0.8h 0.8h = 6,196
[6,196 (1.83% / 1.83%)] [288,452 / 56,116 (85.25%)]
0.9h 0.9h = 7,801
[7,801 (2.30% / 2.31%)] [296,253 / 49,920 (87.55%)]
1.0h 1.0h = 42,119
[42,119 (12.44% / 12.45%)] [338,372 / 42,119 (100.00%)]

Missing observations (325 / 0.10%)