Station Number 40221
Prefecture Ibaraki [ Local Portal ]
Location 茨城県古河市北町 (KOGA SHI, IBARAKI KEN)
Months of Observations 474
Number of Observations 345,995
Period of Observations
Period Name Lat. Long. Height Anemometer
1974/11/01 -- 1978/01/10 KOGA 36.203N 139.715E 20m 0.0m
1978/01/11 -- 1987/10/27 KOGA 36.203N 139.715E 20m 8.5m
1987/10/28 -- 1989/10/23 KOGA 36.203N 139.715E 20m 8.5m
1989/10/24 -- 2008/01/15 KOGA 36.202N 139.717E 20m 8.5m
2008/01/16 -- 2010/01/04 KOGA 36.202N 139.717E 20m 8.5m
2010/01/05 -- 2015/08/99 KOGA 36.202N 139.717E 20m 10.0m
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
43126 KUKI (Saitama) 14.74km 210deg.
42366 TATEBAYASHI (Gunma) 16.99km 281deg.
41376 OYAMA (Tochigi) 18.19km 33deg.
41371 TOCHIGI (Tochigi) 19.02km 356deg.
40281 SHIMOTSUMA (Ibaraki) 20.85km 100deg.
41361 SANO (Tochigi) 22.22km 323deg.
43121 KONOSU (Saitama) 23.22km 229deg.
40326 BANDO (Ibaraki) 24.38km 139deg.
41356 ASHIKAGA (Tochigi) 24.58km 296deg.
40282 JOSO (Ibaraki) 25.64km 112deg.
40231 SHIMODATE (Ibaraki) 25.93km 69deg.
41311 KUZUU (Tochigi) 27.95km 335deg.

Statistics for the Whole Period

Precipitation

0.0mm - 0.4mm 0.0mm - 0.4mm = 324,469
[324,469 (93.78% / 93.95%)] [324,469 / 345,355 (93.95%)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 11,598
[11,598 (3.35% / 3.36%)] [336,067 / 20,886 (97.31%)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 4,200
[4,200 (1.21% / 1.22%)] [340,267 / 9,288 (98.53%)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 1,931
[1,931 (0.56% / 0.56%)] [342,198 / 5,088 (99.09%)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 1,021
[1,021 (0.30% / 0.30%)] [343,219 / 3,157 (99.38%)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 583
[583 (0.17% / 0.17%)] [343,802 / 2,136 (99.55%)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 378
[378 (0.11% / 0.11%)] [344,180 / 1,553 (99.66%)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 270
[270 (0.08% / 0.08%)] [344,450 / 1,175 (99.74%)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 182
[182 (0.05% / 0.05%)] [344,632 / 905 (99.79%)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 141
[141 (0.04% / 0.04%)] [344,773 / 723 (99.83%)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 104
[104 (0.03% / 0.03%)] [344,877 / 582 (99.86%)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 80
[80 (0.02% / 0.02%)] [344,957 / 478 (99.88%)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 61
[61 (0.02% / 0.02%)] [345,018 / 398 (99.90%)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 62
[62 (0.02% / 0.02%)] [345,080 / 337 (99.92%)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 37
[37 (0.01% / 0.01%)] [345,117 / 275 (99.93%)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 33
[33 (0.01% / 0.01%)] [345,150 / 238 (99.94%)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 29
[29 (0.01% / 0.01%)] [345,179 / 205 (99.95%)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 13
[13 (0.00% / 0.00%)] [345,192 / 176 (99.95%)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 24
[24 (0.01% / 0.01%)] [345,216 / 163 (99.96%)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 22
[22 (0.01% / 0.01%)] [345,238 / 139 (99.97%)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 11
[11 (0.00% / 0.00%)] [345,249 / 117 (99.97%)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 11
[11 (0.00% / 0.00%)] [345,260 / 106 (99.97%)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 14
[14 (0.00% / 0.00%)] [345,274 / 95 (99.98%)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 7
[7 (0.00% / 0.00%)] [345,281 / 81 (99.98%)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 7
[7 (0.00% / 0.00%)] [345,288 / 74 (99.98%)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 8
[8 (0.00% / 0.00%)] [345,296 / 67 (99.98%)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 7
[7 (0.00% / 0.00%)] [345,303 / 59 (99.98%)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 2
[2 (0.00% / 0.00%)] [345,305 / 52 (99.99%)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 4
[4 (0.00% / 0.00%)] [345,309 / 50 (99.99%)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 6
[6 (0.00% / 0.00%)] [345,315 / 46 (99.99%)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 4
[4 (0.00% / 0.00%)] [345,319 / 40 (99.99%)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 3
[3 (0.00% / 0.00%)] [345,322 / 36 (99.99%)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 6
[6 (0.00% / 0.00%)] [345,328 / 33 (99.99%)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 3
[3 (0.00% / 0.00%)] [345,331 / 27 (99.99%)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 2
[2 (0.00% / 0.00%)] [345,333 / 24 (99.99%)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 4
[4 (0.00% / 0.00%)] [345,337 / 22 (99.99%)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 5
[5 (0.00% / 0.00%)] [345,342 / 18 (100.00%)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 1
[1 (0.00% / 0.00%)] [345,343 / 13 (100.00%)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 1
[1 (0.00% / 0.00%)] [345,344 / 12 (100.00%)]
41.5mm - 42.4mm 41.5mm - 42.4mm = 1
[1 (0.00% / 0.00%)] [345,345 / 11 (100.00%)]
43.5mm - 44.4mm 43.5mm - 44.4mm = 3
[3 (0.00% / 0.00%)] [345,348 / 10 (100.00%)]
44.5mm - 45.4mm 44.5mm - 45.4mm = 3
[3 (0.00% / 0.00%)] [345,351 / 7 (100.00%)]
46.5mm - 47.4mm 46.5mm - 47.4mm = 1
[1 (0.00% / 0.00%)] [345,352 / 4 (100.00%)]
47.5mm - 48.4mm 47.5mm - 48.4mm = 1
[1 (0.00% / 0.00%)] [345,353 / 3 (100.00%)]
49.5mm - 50.4mm 49.5mm - 50.4mm = 1
[1 (0.00% / 0.00%)] [345,354 / 2 (100.00%)]
68.5mm - 69.4mm 68.5mm - 69.4mm = 1
[1 (0.00% / 0.00%)] [345,355 / 1 (100.00%)]

Missing observations (640 / 0.18%)

Wind Direction

Calm Calm = 58,951
[58,951 (17.04% / 17.89%)] [0 / 0 (NA)]
NNE NNE = 39,370
[39,370 (11.38% / 11.95%)] [0 / 0 (NA)]
NE NE = 25,292
[25,292 (7.31% / 7.67%)] [0 / 0 (NA)]
ENE ENE = 13,419
[13,419 (3.88% / 4.07%)] [0 / 0 (NA)]
E E = 9,549
[9,549 (2.76% / 2.90%)] [0 / 0 (NA)]
ESE ESE = 23,137
[23,137 (6.69% / 7.02%)] [0 / 0 (NA)]
SE SE = 21,050
[21,050 (6.08% / 6.39%)] [0 / 0 (NA)]
SSE SSE = 16,092
[16,092 (4.65% / 4.88%)] [0 / 0 (NA)]
S S = 13,772
[13,772 (3.98% / 4.18%)] [0 / 0 (NA)]
SSW SSW = 7,327
[7,327 (2.12% / 2.22%)] [0 / 0 (NA)]
SW SW = 5,907
[5,907 (1.71% / 1.79%)] [0 / 0 (NA)]
WSW WSW = 8,300
[8,300 (2.40% / 2.52%)] [0 / 0 (NA)]
W W = 15,391
[15,391 (4.45% / 4.67%)] [0 / 0 (NA)]
WNW WNW = 29,485
[29,485 (8.52% / 8.95%)] [0 / 0 (NA)]
NW NW = 15,421
[15,421 (4.46% / 4.68%)] [0 / 0 (NA)]
NNW NNW = 9,532
[9,532 (2.75% / 2.89%)] [0 / 0 (NA)]
N N = 17,559
[17,559 (5.07% / 5.33%)] [0 / 0 (NA)]

Missing observations (16,441 / 4.75%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 61,227
[61,227 (17.70% / 18.58%)] [61,227 / 329,609 (18.58%)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 131,626
[131,626 (38.04% / 39.93%)] [192,853 / 268,382 (58.51%)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 79,470
[79,470 (22.97% / 24.11%)] [272,323 / 136,756 (82.62%)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 32,636
[32,636 (9.43% / 9.90%)] [304,959 / 57,286 (92.52%)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 13,759
[13,759 (3.98% / 4.17%)] [318,718 / 24,650 (96.70%)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 6,149
[6,149 (1.78% / 1.87%)] [324,867 / 10,891 (98.56%)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 2,825
[2,825 (0.82% / 0.86%)] [327,692 / 4,742 (99.42%)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 1,244
[1,244 (0.36% / 0.38%)] [328,936 / 1,917 (99.80%)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 477
[477 (0.14% / 0.14%)] [329,413 / 673 (99.94%)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 138
[138 (0.04% / 0.04%)] [329,551 / 196 (99.98%)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 36
[36 (0.01% / 0.01%)] [329,587 / 58 (99.99%)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 12
[12 (0.00% / 0.00%)] [329,599 / 22 (100.00%)]
11.5m/s - 12.4m/s 11.5m/s - 12.4m/s = 9
[9 (0.00% / 0.00%)] [329,608 / 10 (100.00%)]
12.5m/s - 13.4m/s 12.5m/s - 13.4m/s = 1
[1 (0.00% / 0.00%)] [329,609 / 1 (100.00%)]

Missing observations (16,386 / 4.74%)

Temperature

-11.5C - -10.6C -11.5C - -10.6C = 1
[1 (0.00% / 0.00%)] [1 / 329,576 (0.00%)]
-10.5C - -9.6C -10.5C - -9.6C = 2
[2 (0.00% / 0.00%)] [3 / 329,575 (0.00%)]
-9.5C - -8.6C -9.5C - -8.6C = 1
[1 (0.00% / 0.00%)] [4 / 329,573 (0.00%)]
-8.5C - -7.6C -8.5C - -7.6C = 1
[1 (0.00% / 0.00%)] [5 / 329,572 (0.00%)]
-7.5C - -6.6C -7.5C - -6.6C = 13
[13 (0.00% / 0.00%)] [18 / 329,571 (0.01%)]
-6.5C - -5.6C -6.5C - -5.6C = 54
[54 (0.02% / 0.02%)] [72 / 329,558 (0.02%)]
-5.5C - -4.6C -5.5C - -4.6C = 168
[168 (0.05% / 0.05%)] [240 / 329,504 (0.07%)]
-4.5C - -3.6C -4.5C - -3.6C = 487
[487 (0.14% / 0.15%)] [727 / 329,336 (0.22%)]
-3.5C - -2.6C -3.5C - -2.6C = 1,068
[1,068 (0.31% / 0.32%)] [1,795 / 328,849 (0.54%)]
-2.5C - -1.6C -2.5C - -1.6C = 2,003
[2,003 (0.58% / 0.61%)] [3,798 / 327,781 (1.15%)]
-1.5C - -0.6C -1.5C - -0.6C = 3,458
[3,458 (1.00% / 1.05%)] [7,256 / 325,778 (2.20%)]
-0.5C - 0.4C -0.5C - 0.4C = 10,876
[10,876 (3.14% / 3.30%)] [18,132 / 322,320 (5.50%)]
0.5C - 1.4C 0.5C - 1.4C = 7,976
[7,976 (2.31% / 2.42%)] [26,108 / 311,444 (7.92%)]
1.5C - 2.4C 1.5C - 2.4C = 8,665
[8,665 (2.50% / 2.63%)] [34,773 / 303,468 (10.55%)]
2.5C - 3.4C 2.5C - 3.4C = 9,516
[9,516 (2.75% / 2.89%)] [44,289 / 294,803 (13.44%)]
3.5C - 4.4C 3.5C - 4.4C = 10,138
[10,138 (2.93% / 3.08%)] [54,427 / 285,287 (16.51%)]
4.5C - 5.4C 4.5C - 5.4C = 10,645
[10,645 (3.08% / 3.23%)] [65,072 / 275,149 (19.74%)]
5.5C - 6.4C 5.5C - 6.4C = 11,039
[11,039 (3.19% / 3.35%)] [76,111 / 264,504 (23.09%)]
6.5C - 7.4C 6.5C - 7.4C = 11,065
[11,065 (3.20% / 3.36%)] [87,176 / 253,465 (26.45%)]
7.5C - 8.4C 7.5C - 8.4C = 10,908
[10,908 (3.15% / 3.31%)] [98,084 / 242,400 (29.76%)]
8.5C - 9.4C 8.5C - 9.4C = 10,839
[10,839 (3.13% / 3.29%)] [108,923 / 231,492 (33.05%)]
9.5C - 10.4C 9.5C - 10.4C = 10,226
[10,226 (2.96% / 3.10%)] [119,149 / 220,653 (36.15%)]
10.5C - 11.4C 10.5C - 11.4C = 10,238
[10,238 (2.96% / 3.11%)] [129,387 / 210,427 (39.26%)]
11.5C - 12.4C 11.5C - 12.4C = 10,241
[10,241 (2.96% / 3.11%)] [139,628 / 200,189 (42.37%)]
12.5C - 13.4C 12.5C - 13.4C = 9,726
[9,726 (2.81% / 2.95%)] [149,354 / 189,948 (45.32%)]
13.5C - 14.4C 13.5C - 14.4C = 10,121
[10,121 (2.93% / 3.07%)] [159,475 / 180,222 (48.39%)]
14.5C - 15.4C 14.5C - 15.4C = 10,199
[10,199 (2.95% / 3.09%)] [169,674 / 170,101 (51.48%)]
15.5C - 16.4C 15.5C - 16.4C = 11,089
[11,089 (3.20% / 3.36%)] [180,763 / 159,902 (54.85%)]
16.5C - 17.4C 16.5C - 17.4C = 11,584
[11,584 (3.35% / 3.51%)] [192,347 / 148,813 (58.36%)]
17.5C - 18.4C 17.5C - 18.4C = 12,249
[12,249 (3.54% / 3.72%)] [204,596 / 137,229 (62.08%)]
18.5C - 19.4C 18.5C - 19.4C = 12,484
[12,484 (3.61% / 3.79%)] [217,080 / 124,980 (65.87%)]
19.5C - 20.4C 19.5C - 20.4C = 12,778
[12,778 (3.69% / 3.88%)] [229,858 / 112,496 (69.74%)]
20.5C - 21.4C 20.5C - 21.4C = 12,469
[12,469 (3.60% / 3.78%)] [242,327 / 99,718 (73.53%)]
21.5C - 22.4C 21.5C - 22.4C = 11,975
[11,975 (3.46% / 3.63%)] [254,302 / 87,249 (77.16%)]
22.5C - 23.4C 22.5C - 23.4C = 12,260
[12,260 (3.54% / 3.72%)] [266,562 / 75,274 (80.88%)]
23.5C - 24.4C 23.5C - 24.4C = 12,005
[12,005 (3.47% / 3.64%)] [278,567 / 63,014 (84.52%)]
24.5C - 25.4C 24.5C - 25.4C = 10,967
[10,967 (3.17% / 3.33%)] [289,534 / 51,009 (87.85%)]
25.5C - 26.4C 25.5C - 26.4C = 9,157
[9,157 (2.65% / 2.78%)] [298,691 / 40,042 (90.63%)]
26.5C - 27.4C 26.5C - 27.4C = 7,277
[7,277 (2.10% / 2.21%)] [305,968 / 30,885 (92.84%)]
27.5C - 28.4C 27.5C - 28.4C = 5,432
[5,432 (1.57% / 1.65%)] [311,400 / 23,608 (94.49%)]
28.5C - 29.4C 28.5C - 29.4C = 4,448
[4,448 (1.29% / 1.35%)] [315,848 / 18,176 (95.83%)]
29.5C - 30.4C 29.5C - 30.4C = 3,572
[3,572 (1.03% / 1.08%)] [319,420 / 13,728 (96.92%)]
30.5C - 31.4C 30.5C - 31.4C = 2,983
[2,983 (0.86% / 0.91%)] [322,403 / 10,156 (97.82%)]
31.5C - 32.4C 31.5C - 32.4C = 2,405
[2,405 (0.70% / 0.73%)] [324,808 / 7,173 (98.55%)]
32.5C - 33.4C 32.5C - 33.4C = 1,893
[1,893 (0.55% / 0.57%)] [326,701 / 4,768 (99.13%)]
33.5C - 34.4C 33.5C - 34.4C = 1,356
[1,356 (0.39% / 0.41%)] [328,057 / 2,875 (99.54%)]
34.5C - 35.4C 34.5C - 35.4C = 871
[871 (0.25% / 0.26%)] [328,928 / 1,519 (99.80%)]
35.5C - 36.4C 35.5C - 36.4C = 430
[430 (0.12% / 0.13%)] [329,358 / 648 (99.93%)]
36.5C - 37.4C 36.5C - 37.4C = 177
[177 (0.05% / 0.05%)] [329,535 / 218 (99.99%)]
37.5C - 38.4C 37.5C - 38.4C = 37
[37 (0.01% / 0.01%)] [329,572 / 41 (100.00%)]
38.5C - 39.4C 38.5C - 39.4C = 3
[3 (0.00% / 0.00%)] [329,575 / 4 (100.00%)]
39.5C - 40.4C 39.5C - 40.4C = 1
[1 (0.00% / 0.00%)] [329,576 / 1 (100.00%)]

Missing observations (16,419 / 4.75%)

Sunshine Duration

0.0h 0.0h = 232,457
[232,457 (67.19% / 70.52%)] [232,457 / 329,637 (70.52%)]
0.1h 0.1h = 6,444
[6,444 (1.86% / 1.95%)] [238,901 / 97,180 (72.47%)]
0.2h 0.2h = 4,982
[4,982 (1.44% / 1.51%)] [243,883 / 90,736 (73.99%)]
0.3h 0.3h = 4,415
[4,415 (1.28% / 1.34%)] [248,298 / 85,754 (75.32%)]
0.4h 0.4h = 4,185
[4,185 (1.21% / 1.27%)] [252,483 / 81,339 (76.59%)]
0.5h 0.5h = 4,147
[4,147 (1.20% / 1.26%)] [256,630 / 77,154 (77.85%)]
0.6h 0.6h = 4,251
[4,251 (1.23% / 1.29%)] [260,881 / 73,007 (79.14%)]
0.7h 0.7h = 4,487
[4,487 (1.30% / 1.36%)] [265,368 / 68,756 (80.50%)]
0.8h 0.8h = 5,191
[5,191 (1.50% / 1.57%)] [270,559 / 64,269 (82.08%)]
0.9h 0.9h = 6,962
[6,962 (2.01% / 2.11%)] [277,521 / 59,078 (84.19%)]
1.0h 1.0h = 52,116
[52,116 (15.06% / 15.81%)] [329,637 / 52,116 (100.00%)]

Missing observations (16,358 / 4.73%)