Station Number 21187
Prefecture Hokkaido (Iburi Subprefecture) [ Local Portal ]
Location 北海道苫小牧市しらかば町 苫小牧特別地域気象観測所 (TOMAKOMAI SHI, HOKKAIDO)
Months of Observations 327
Number of Observations 238,296
Period of Observations
Period Name Lat. Long. Height Anemometer
1988/06/25 -- 1999/12/20 TOMAKOMAI 42.623N 141.547E 6m 15.9m
1999/12/21 -- 1999/12/22 TOMAKOMAI 42.623N 141.547E 6m 15.8m
1999/12/23 -- 2004/09/21 TOMAKOMAI 42.623N 141.547E 6m 15.8m
2004/09/22 -- 2015/08/99 TOMAKOMAI 42.623N 141.547E 6m 20.1m
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
21913 TOMAKOMAI (Hokkaido) 0.11km 180deg.
21186 TOMAKOMAI (Hokkaido) 2.72km 85deg.
21261 SHIRAOI (Hokkaido) 18.31km 241deg.
21920 SHIRAOI (Hokkaido) 18.31km 241deg.
14286 SHIKOTSUKOHAN (Hokkaido) 20.14km 325deg.
14296 CHITOSE (Hokkaido) 20.65km 35deg.
14923 CHITOSE (Hokkaido) 20.65km 35deg.
21171 MORINO (Hokkaido) 24.62km 271deg.

Statistics for the Whole Period

Precipitation

0.0mm - 0.4mm 0.0mm - 0.4mm = 222,293
[222,293 (93.28% / 93.31%)] [222,293 / 238,237 (93.31%)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 9,253
[9,253 (3.88% / 3.88%)] [231,546 / 15,944 (97.19%)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 2,818
[2,818 (1.18% / 1.18%)] [234,364 / 6,691 (98.37%)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 1,445
[1,445 (0.61% / 0.61%)] [235,809 / 3,873 (98.98%)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 778
[778 (0.33% / 0.33%)] [236,587 / 2,428 (99.31%)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 510
[510 (0.21% / 0.21%)] [237,097 / 1,650 (99.52%)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 319
[319 (0.13% / 0.13%)] [237,416 / 1,140 (99.66%)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 203
[203 (0.09% / 0.09%)] [237,619 / 821 (99.74%)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 155
[155 (0.07% / 0.07%)] [237,774 / 618 (99.81%)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 110
[110 (0.05% / 0.05%)] [237,884 / 463 (99.85%)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 80
[80 (0.03% / 0.03%)] [237,964 / 353 (99.89%)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 59
[59 (0.02% / 0.02%)] [238,023 / 273 (99.91%)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 48
[48 (0.02% / 0.02%)] [238,071 / 214 (99.93%)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 33
[33 (0.01% / 0.01%)] [238,104 / 166 (99.94%)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 28
[28 (0.01% / 0.01%)] [238,132 / 133 (99.96%)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 20
[20 (0.01% / 0.01%)] [238,152 / 105 (99.96%)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 9
[9 (0.00% / 0.00%)] [238,161 / 85 (99.97%)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 9
[9 (0.00% / 0.00%)] [238,170 / 76 (99.97%)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 10
[10 (0.00% / 0.00%)] [238,180 / 67 (99.98%)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 6
[6 (0.00% / 0.00%)] [238,186 / 57 (99.98%)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 9
[9 (0.00% / 0.00%)] [238,195 / 51 (99.98%)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 5
[5 (0.00% / 0.00%)] [238,200 / 42 (99.98%)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 4
[4 (0.00% / 0.00%)] [238,204 / 37 (99.99%)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 7
[7 (0.00% / 0.00%)] [238,211 / 33 (99.99%)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 3
[3 (0.00% / 0.00%)] [238,214 / 26 (99.99%)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 4
[4 (0.00% / 0.00%)] [238,218 / 23 (99.99%)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 3
[3 (0.00% / 0.00%)] [238,221 / 19 (99.99%)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 3
[3 (0.00% / 0.00%)] [238,224 / 16 (99.99%)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 1
[1 (0.00% / 0.00%)] [238,225 / 13 (99.99%)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 2
[2 (0.00% / 0.00%)] [238,227 / 12 (100.00%)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 1
[1 (0.00% / 0.00%)] [238,228 / 10 (100.00%)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 2
[2 (0.00% / 0.00%)] [238,230 / 9 (100.00%)]
39.5mm - 40.4mm 39.5mm - 40.4mm = 1
[1 (0.00% / 0.00%)] [238,231 / 7 (100.00%)]
42.5mm - 43.4mm 42.5mm - 43.4mm = 1
[1 (0.00% / 0.00%)] [238,232 / 6 (100.00%)]
43.5mm - 44.4mm 43.5mm - 44.4mm = 1
[1 (0.00% / 0.00%)] [238,233 / 5 (100.00%)]
46.5mm - 47.4mm 46.5mm - 47.4mm = 1
[1 (0.00% / 0.00%)] [238,234 / 4 (100.00%)]
55.5mm - 56.4mm 55.5mm - 56.4mm = 1
[1 (0.00% / 0.00%)] [238,235 / 3 (100.00%)]
80.5mm - 81.4mm 80.5mm - 81.4mm = 1
[1 (0.00% / 0.00%)] [238,236 / 2 (100.00%)]
84.5mm - 85.4mm 84.5mm - 85.4mm = 1
[1 (0.00% / 0.00%)] [238,237 / 1 (100.00%)]

Missing observations (59 / 0.02%)

Wind Direction

Calm Calm = 4,342
[4,342 (1.82% / 1.82%)] [0 / 0 (NA)]
NNE NNE = 18,694
[18,694 (7.84% / 7.85%)] [0 / 0 (NA)]
NE NE = 6,432
[6,432 (2.70% / 2.70%)] [0 / 0 (NA)]
ENE ENE = 3,181
[3,181 (1.33% / 1.34%)] [0 / 0 (NA)]
E E = 3,507
[3,507 (1.47% / 1.47%)] [0 / 0 (NA)]
ESE ESE = 8,451
[8,451 (3.55% / 3.55%)] [0 / 0 (NA)]
SE SE = 22,477
[22,477 (9.43% / 9.44%)] [0 / 0 (NA)]
SSE SSE = 18,526
[18,526 (7.77% / 7.78%)] [0 / 0 (NA)]
S S = 16,072
[16,072 (6.74% / 6.75%)] [0 / 0 (NA)]
SSW SSW = 15,270
[15,270 (6.41% / 6.41%)] [0 / 0 (NA)]
SW SW = 17,183
[17,183 (7.21% / 7.22%)] [0 / 0 (NA)]
WSW WSW = 15,487
[15,487 (6.50% / 6.50%)] [0 / 0 (NA)]
W W = 16,093
[16,093 (6.75% / 6.76%)] [0 / 0 (NA)]
WNW WNW = 11,734
[11,734 (4.92% / 4.93%)] [0 / 0 (NA)]
NW NW = 9,439
[9,439 (3.96% / 3.96%)] [0 / 0 (NA)]
NNW NNW = 14,583
[14,583 (6.12% / 6.12%)] [0 / 0 (NA)]
N N = 36,666
[36,666 (15.39% / 15.40%)] [0 / 0 (NA)]

Missing observations (159 / 0.07%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 4,754
[4,754 (1.99% / 2.00%)] [4,754 / 238,136 (2.00%)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 42,173
[42,173 (17.70% / 17.71%)] [46,927 / 233,382 (19.71%)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 62,213
[62,213 (26.11% / 26.12%)] [109,140 / 191,209 (45.83%)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 48,897
[48,897 (20.52% / 20.53%)] [158,037 / 128,996 (66.36%)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 32,791
[32,791 (13.76% / 13.77%)] [190,828 / 80,099 (80.13%)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 20,368
[20,368 (8.55% / 8.55%)] [211,196 / 47,308 (88.69%)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 12,132
[12,132 (5.09% / 5.09%)] [223,328 / 26,940 (93.78%)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 6,758
[6,758 (2.84% / 2.84%)] [230,086 / 14,808 (96.62%)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 3,720
[3,720 (1.56% / 1.56%)] [233,806 / 8,050 (98.18%)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 2,028
[2,028 (0.85% / 0.85%)] [235,834 / 4,330 (99.03%)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 1,045
[1,045 (0.44% / 0.44%)] [236,879 / 2,302 (99.47%)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 566
[566 (0.24% / 0.24%)] [237,445 / 1,257 (99.71%)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 340
[340 (0.14% / 0.14%)] [237,785 / 691 (99.85%)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 177
[177 (0.07% / 0.07%)] [237,962 / 351 (99.93%)]
13.5m/s - 14.4m/s 13.5m/s - 14.4m/s = 89
[89 (0.04% / 0.04%)] [238,051 / 174 (99.96%)]
14.5m/s - 15.4m/s 14.5m/s - 15.4m/s = 46
[46 (0.02% / 0.02%)] [238,097 / 85 (99.98%)]
15.5m/s - 16.4m/s 15.5m/s - 16.4m/s = 23
[23 (0.01% / 0.01%)] [238,120 / 39 (99.99%)]
16.5m/s - 17.4m/s 16.5m/s - 17.4m/s = 8
[8 (0.00% / 0.00%)] [238,128 / 16 (100.00%)]
17.5m/s - 18.4m/s 17.5m/s - 18.4m/s = 3
[3 (0.00% / 0.00%)] [238,131 / 8 (100.00%)]
18.5m/s - 19.4m/s 18.5m/s - 19.4m/s = 3
[3 (0.00% / 0.00%)] [238,134 / 5 (100.00%)]
19.5m/s - 20.4m/s 19.5m/s - 20.4m/s = 2
[2 (0.00% / 0.00%)] [238,136 / 2 (100.00%)]

Missing observations (160 / 0.07%)

Temperature

-18.5C - -17.6C -18.5C - -17.6C = 5
[5 (0.00% / 0.00%)] [5 / 238,246 (0.00%)]
-17.5C - -16.6C -17.5C - -16.6C = 6
[6 (0.00% / 0.00%)] [11 / 238,241 (0.00%)]
-16.5C - -15.6C -16.5C - -15.6C = 19
[19 (0.01% / 0.01%)] [30 / 238,235 (0.01%)]
-15.5C - -14.6C -15.5C - -14.6C = 42
[42 (0.02% / 0.02%)] [72 / 238,216 (0.03%)]
-14.5C - -13.6C -14.5C - -13.6C = 99
[99 (0.04% / 0.04%)] [171 / 238,174 (0.07%)]
-13.5C - -12.6C -13.5C - -12.6C = 202
[202 (0.08% / 0.08%)] [373 / 238,075 (0.16%)]
-12.5C - -11.6C -12.5C - -11.6C = 353
[353 (0.15% / 0.15%)] [726 / 237,873 (0.30%)]
-11.5C - -10.6C -11.5C - -10.6C = 629
[629 (0.26% / 0.26%)] [1,355 / 237,520 (0.57%)]
-10.5C - -9.6C -10.5C - -9.6C = 957
[957 (0.40% / 0.40%)] [2,312 / 236,891 (0.97%)]
-9.5C - -8.6C -9.5C - -8.6C = 1,354
[1,354 (0.57% / 0.57%)] [3,666 / 235,934 (1.54%)]
-8.5C - -7.6C -8.5C - -7.6C = 1,796
[1,796 (0.75% / 0.75%)] [5,462 / 234,580 (2.29%)]
-7.5C - -6.6C -7.5C - -6.6C = 2,451
[2,451 (1.03% / 1.03%)] [7,913 / 232,784 (3.32%)]
-6.5C - -5.6C -6.5C - -5.6C = 3,286
[3,286 (1.38% / 1.38%)] [11,199 / 230,333 (4.70%)]
-5.5C - -4.6C -5.5C - -4.6C = 4,282
[4,282 (1.80% / 1.80%)] [15,481 / 227,047 (6.50%)]
-4.5C - -3.6C -4.5C - -3.6C = 5,345
[5,345 (2.24% / 2.24%)] [20,826 / 222,765 (8.74%)]
-3.5C - -2.6C -3.5C - -2.6C = 6,313
[6,313 (2.65% / 2.65%)] [27,139 / 217,420 (11.39%)]
-2.5C - -1.6C -2.5C - -1.6C = 7,230
[7,230 (3.03% / 3.03%)] [34,369 / 211,107 (14.43%)]
-1.5C - -0.6C -1.5C - -0.6C = 7,956
[7,956 (3.34% / 3.34%)] [42,325 / 203,877 (17.77%)]
-0.5C - 0.4C -0.5C - 0.4C = 16,971
[16,971 (7.12% / 7.12%)] [59,296 / 195,921 (24.89%)]
0.5C - 1.4C 0.5C - 1.4C = 9,387
[9,387 (3.94% / 3.94%)] [68,683 / 178,950 (28.83%)]
1.5C - 2.4C 1.5C - 2.4C = 8,701
[8,701 (3.65% / 3.65%)] [77,384 / 169,563 (32.48%)]
2.5C - 3.4C 2.5C - 3.4C = 7,945
[7,945 (3.33% / 3.33%)] [85,329 / 160,862 (35.82%)]
3.5C - 4.4C 3.5C - 4.4C = 7,563
[7,563 (3.17% / 3.17%)] [92,892 / 152,917 (38.99%)]
4.5C - 5.4C 4.5C - 5.4C = 7,172
[7,172 (3.01% / 3.01%)] [100,064 / 145,354 (42.00%)]
5.5C - 6.4C 5.5C - 6.4C = 6,967
[6,967 (2.92% / 2.92%)] [107,031 / 138,182 (44.92%)]
6.5C - 7.4C 6.5C - 7.4C = 6,924
[6,924 (2.91% / 2.91%)] [113,955 / 131,215 (47.83%)]
7.5C - 8.4C 7.5C - 8.4C = 7,012
[7,012 (2.94% / 2.94%)] [120,967 / 124,291 (50.77%)]
8.5C - 9.4C 8.5C - 9.4C = 7,246
[7,246 (3.04% / 3.04%)] [128,213 / 117,279 (53.82%)]
9.5C - 10.4C 9.5C - 10.4C = 7,392
[7,392 (3.10% / 3.10%)] [135,605 / 110,033 (56.92%)]
10.5C - 11.4C 10.5C - 11.4C = 7,783
[7,783 (3.27% / 3.27%)] [143,388 / 102,641 (60.18%)]
11.5C - 12.4C 11.5C - 12.4C = 7,699
[7,699 (3.23% / 3.23%)] [151,087 / 94,858 (63.42%)]
12.5C - 13.4C 12.5C - 13.4C = 7,720
[7,720 (3.24% / 3.24%)] [158,807 / 87,159 (66.66%)]
13.5C - 14.4C 13.5C - 14.4C = 7,956
[7,956 (3.34% / 3.34%)] [166,763 / 79,439 (70.00%)]
14.5C - 15.4C 14.5C - 15.4C = 8,518
[8,518 (3.57% / 3.58%)] [175,281 / 71,483 (73.57%)]
15.5C - 16.4C 15.5C - 16.4C = 8,983
[8,983 (3.77% / 3.77%)] [184,264 / 62,965 (77.34%)]
16.5C - 17.4C 16.5C - 17.4C = 9,253
[9,253 (3.88% / 3.88%)] [193,517 / 53,982 (81.23%)]
17.5C - 18.4C 17.5C - 18.4C = 9,044
[9,044 (3.80% / 3.80%)] [202,561 / 44,729 (85.02%)]
18.5C - 19.4C 18.5C - 19.4C = 8,618
[8,618 (3.62% / 3.62%)] [211,179 / 35,685 (88.64%)]
19.5C - 20.4C 19.5C - 20.4C = 7,752
[7,752 (3.25% / 3.25%)] [218,931 / 27,067 (91.89%)]
20.5C - 21.4C 20.5C - 21.4C = 6,770
[6,770 (2.84% / 2.84%)] [225,701 / 19,315 (94.73%)]
21.5C - 22.4C 21.5C - 22.4C = 5,142
[5,142 (2.16% / 2.16%)] [230,843 / 12,545 (96.89%)]
22.5C - 23.4C 22.5C - 23.4C = 3,356
[3,356 (1.41% / 1.41%)] [234,199 / 7,403 (98.30%)]
23.5C - 24.4C 23.5C - 24.4C = 1,962
[1,962 (0.82% / 0.82%)] [236,161 / 4,047 (99.12%)]
24.5C - 25.4C 24.5C - 25.4C = 1,087
[1,087 (0.46% / 0.46%)] [237,248 / 2,085 (99.58%)]
25.5C - 26.4C 25.5C - 26.4C = 510
[510 (0.21% / 0.21%)] [237,758 / 998 (99.80%)]
26.5C - 27.4C 26.5C - 27.4C = 282
[282 (0.12% / 0.12%)] [238,040 / 488 (99.91%)]
27.5C - 28.4C 27.5C - 28.4C = 130
[130 (0.05% / 0.05%)] [238,170 / 206 (99.97%)]
28.5C - 29.4C 28.5C - 29.4C = 42
[42 (0.02% / 0.02%)] [238,212 / 76 (99.99%)]
29.5C - 30.4C 29.5C - 30.4C = 23
[23 (0.01% / 0.01%)] [238,235 / 34 (100.00%)]
30.5C - 31.4C 30.5C - 31.4C = 8
[8 (0.00% / 0.00%)] [238,243 / 11 (100.00%)]
31.5C - 32.4C 31.5C - 32.4C = 1
[1 (0.00% / 0.00%)] [238,244 / 3 (100.00%)]
32.5C - 33.4C 32.5C - 33.4C = 2
[2 (0.00% / 0.00%)] [238,246 / 2 (100.00%)]

Missing observations (50 / 0.02%)

Sunshine Duration

0.0h 0.0h = 171,830
[171,830 (72.11% / 72.15%)] [171,830 / 238,173 (72.15%)]
0.1h 0.1h = 5,797
[5,797 (2.43% / 2.43%)] [177,627 / 66,343 (74.58%)]
0.2h 0.2h = 4,568
[4,568 (1.92% / 1.92%)] [182,195 / 60,546 (76.50%)]
0.3h 0.3h = 4,068
[4,068 (1.71% / 1.71%)] [186,263 / 55,978 (78.20%)]
0.4h 0.4h = 4,121
[4,121 (1.73% / 1.73%)] [190,384 / 51,910 (79.94%)]
0.5h 0.5h = 4,010
[4,010 (1.68% / 1.68%)] [194,394 / 47,789 (81.62%)]
0.6h 0.6h = 3,884
[3,884 (1.63% / 1.63%)] [198,278 / 43,779 (83.25%)]
0.7h 0.7h = 4,043
[4,043 (1.70% / 1.70%)] [202,321 / 39,895 (84.95%)]
0.8h 0.8h = 4,420
[4,420 (1.85% / 1.86%)] [206,741 / 35,852 (86.80%)]
0.9h 0.9h = 5,475
[5,475 (2.30% / 2.30%)] [212,216 / 31,432 (89.10%)]
1.0h 1.0h = 25,957
[25,957 (10.89% / 10.90%)] [238,173 / 25,957 (100.00%)]

Missing observations (123 / 0.05%)

Snow Depth

0cm 0cm = 17,497
[17,497 (7.34% / 51.40%)] [17,497 / 34,042 (51.40%)]
1cm - 5cm 1cm - 5cm = 3,173
[3,173 (1.33% / 9.32%)] [20,670 / 16,545 (60.72%)]
6cm - 10cm 6cm - 10cm = 2,961
[2,961 (1.24% / 8.70%)] [23,631 / 13,372 (69.42%)]
11cm - 15cm 11cm - 15cm = 3,684
[3,684 (1.55% / 10.82%)] [27,315 / 10,411 (80.24%)]
16cm - 20cm 16cm - 20cm = 2,755
[2,755 (1.16% / 8.09%)] [30,070 / 6,727 (88.33%)]
21cm - 25cm 21cm - 25cm = 2,009
[2,009 (0.84% / 5.90%)] [32,079 / 3,972 (94.23%)]
26cm - 30cm 26cm - 30cm = 1,378
[1,378 (0.58% / 4.05%)] [33,457 / 1,963 (98.28%)]
31cm - 35cm 31cm - 35cm = 262
[262 (0.11% / 0.77%)] [33,719 / 585 (99.05%)]
36cm - 40cm 36cm - 40cm = 202
[202 (0.08% / 0.59%)] [33,921 / 323 (99.64%)]
41cm - 45cm 41cm - 45cm = 80
[80 (0.03% / 0.24%)] [34,001 / 121 (99.88%)]
46cm - 50cm 46cm - 50cm = 40
[40 (0.02% / 0.12%)] [34,041 / 41 (100.00%)]
51cm - 55cm 51cm - 55cm = 1
[1 (0.00% / 0.00%)] [34,042 / 1 (100.00%)]

Missing observations (204,254 / 85.71%)