観測所番号 42326
都道府県 群馬県 [ 地域ポータル ]
所在地 群馬県甘楽郡下仁田町西野牧 (群馬県甘楽郡下仁田町)
観測月数 494
観測回数 360,490
観測期間
期間 名前 緯度 経度 高度 風速計高さ
1974年11月01日 〜 1977年12月19日 西野牧 (ニシノマキ) 36.245N 138.707E 375m 0.0m
1977年12月20日 〜 1986年08月20日 西野牧 (ニシノマキ) 36.245N 138.707E 375m 6.5m
1986年08月21日 〜 1998年03月30日 西野牧 (ニシノマキ) 36.245N 138.707E 375m 6.5m
1998年03月31日 〜 2009年02月18日 西野牧 (ニシノマキ) 36.245N 138.707E 375m 6.5m
2009年02月19日 〜 2010年03月25日 西野牧 (ニシノマキ) 36.245N 138.707E 375m 6.5m
2010年03月26日 〜 2017年07月99日 西野牧 (ニシノマキ) 36.245N 138.707E 375m 10.0m
リアルタイムデータ アメラス(アメダス・ランキング・サービス)
過去の大雨データ アメダス集中豪雨
気象災害報告
台風接近履歴
近隣観測所
番号 名前 距離 方位
42276 一の字山(群馬県) 14.76km 342度
48456 十石峠(長野県) 16.19km 200度
42391 稲含山(群馬県) 16.31km 120度
48331 軽井沢(長野県) 17.96km 306度
48386 佐久(長野県) 20.67km 270度
48516 北相木(長野県) 21.01km 204度
48451 茂来山(長野県) 21.82km 225度
42286 上里見(群馬県) 22.35km 49度
42396 神流(群馬県) 22.87km 131度
42241 榛名山(群馬県) 29.27km 30度

全期間統計

降水量

0.0mm - 0.4mm 0.0mm - 0.4mm = 335,186
[335,186 (92.98% / 93.54%)] [335,186 / 358,348 (93.54)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 13,517
[13,517 (3.75% / 3.77%)] [348,703 / 23,162 (97.31)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 4,312
[4,312 (1.20% / 1.20%)] [353,015 / 9,645 (98.51)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 2,018
[2,018 (0.56% / 0.56%)] [355,033 / 5,333 (99.07)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 1,087
[1,087 (0.30% / 0.30%)] [356,120 / 3,315 (99.38)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 633
[633 (0.18% / 0.18%)] [356,753 / 2,228 (99.55)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 418
[418 (0.12% / 0.12%)] [357,171 / 1,595 (99.67)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 279
[279 (0.08% / 0.08%)] [357,450 / 1,177 (99.75)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 185
[185 (0.05% / 0.05%)] [357,635 / 898 (99.80)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 137
[137 (0.04% / 0.04%)] [357,772 / 713 (99.84)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 113
[113 (0.03% / 0.03%)] [357,885 / 576 (99.87)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 72
[72 (0.02% / 0.02%)] [357,957 / 463 (99.89)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 50
[50 (0.01% / 0.01%)] [358,007 / 391 (99.90)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 53
[53 (0.01% / 0.01%)] [358,060 / 341 (99.92)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 39
[39 (0.01% / 0.01%)] [358,099 / 288 (99.93)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 34
[34 (0.01% / 0.01%)] [358,133 / 249 (99.94)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 27
[27 (0.01% / 0.01%)] [358,160 / 215 (99.95)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 25
[25 (0.01% / 0.01%)] [358,185 / 188 (99.95)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 19
[19 (0.01% / 0.01%)] [358,204 / 163 (99.96)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 13
[13 (0.00% / 0.00%)] [358,217 / 144 (99.96)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 15
[15 (0.00% / 0.00%)] [358,232 / 131 (99.97)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 9
[9 (0.00% / 0.00%)] [358,241 / 116 (99.97)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 15
[15 (0.00% / 0.00%)] [358,256 / 107 (99.97)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 9
[9 (0.00% / 0.00%)] [358,265 / 92 (99.98)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 9
[9 (0.00% / 0.00%)] [358,274 / 83 (99.98)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 10
[10 (0.00% / 0.00%)] [358,284 / 74 (99.98)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 9
[9 (0.00% / 0.00%)] [358,293 / 64 (99.98)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 7
[7 (0.00% / 0.00%)] [358,300 / 55 (99.99)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 2
[2 (0.00% / 0.00%)] [358,302 / 48 (99.99)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 6
[6 (0.00% / 0.00%)] [358,308 / 46 (99.99)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 4
[4 (0.00% / 0.00%)] [358,312 / 40 (99.99)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 2
[2 (0.00% / 0.00%)] [358,314 / 36 (99.99)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 4
[4 (0.00% / 0.00%)] [358,318 / 34 (99.99)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 1
[1 (0.00% / 0.00%)] [358,319 / 30 (99.99)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 1
[1 (0.00% / 0.00%)] [358,320 / 29 (99.99)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 1
[1 (0.00% / 0.00%)] [358,321 / 28 (99.99)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 2
[2 (0.00% / 0.00%)] [358,323 / 27 (99.99)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 1
[1 (0.00% / 0.00%)] [358,324 / 25 (99.99)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 3
[3 (0.00% / 0.00%)] [358,327 / 24 (99.99)]
39.5mm - 40.4mm 39.5mm - 40.4mm = 2
[2 (0.00% / 0.00%)] [358,329 / 21 (99.99)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 5
[5 (0.00% / 0.00%)] [358,334 / 19 (100.00)]
41.5mm - 42.4mm 41.5mm - 42.4mm = 1
[1 (0.00% / 0.00%)] [358,335 / 14 (100.00)]
43.5mm - 44.4mm 43.5mm - 44.4mm = 2
[2 (0.00% / 0.00%)] [358,337 / 13 (100.00)]
44.5mm - 45.4mm 44.5mm - 45.4mm = 2
[2 (0.00% / 0.00%)] [358,339 / 11 (100.00)]
45.5mm - 46.4mm 45.5mm - 46.4mm = 1
[1 (0.00% / 0.00%)] [358,340 / 9 (100.00)]
46.5mm - 47.4mm 46.5mm - 47.4mm = 2
[2 (0.00% / 0.00%)] [358,342 / 8 (100.00)]
47.5mm - 48.4mm 47.5mm - 48.4mm = 1
[1 (0.00% / 0.00%)] [358,343 / 6 (100.00)]
48.5mm - 49.4mm 48.5mm - 49.4mm = 1
[1 (0.00% / 0.00%)] [358,344 / 5 (100.00)]
50.5mm - 51.4mm 50.5mm - 51.4mm = 1
[1 (0.00% / 0.00%)] [358,345 / 4 (100.00)]
53.5mm - 54.4mm 53.5mm - 54.4mm = 1
[1 (0.00% / 0.00%)] [358,346 / 3 (100.00)]
68.5mm - 69.4mm 68.5mm - 69.4mm = 2
[2 (0.00% / 0.00%)] [358,348 / 2 (100.00)]

欠測回数 (2,142 / 0.59%)

風向

静穏 静穏 = 128,145
[128,145 (35.55% / 37.00%)]
北北東 北北東 = 3,082
[3,082 (0.85% / 0.89%)]
北東 北東 = 1,831
[1,831 (0.51% / 0.53%)]
東北東 東北東 = 1,328
[1,328 (0.37% / 0.38%)]
東 = 1,547
[1,547 (0.43% / 0.45%)]
東南東 東南東 = 2,585
[2,585 (0.72% / 0.75%)]
南東 南東 = 5,395
[5,395 (1.50% / 1.56%)]
南南東 南南東 = 25,491
[25,491 (7.07% / 7.36%)]
南 = 32,741
[32,741 (9.08% / 9.45%)]
南南西 南南西 = 7,996
[7,996 (2.22% / 2.31%)]
南西 南西 = 3,419
[3,419 (0.95% / 0.99%)]
西南西 西南西 = 2,706
[2,706 (0.75% / 0.78%)]
西 西 = 3,352
[3,352 (0.93% / 0.97%)]
西北西 西北西 = 7,802
[7,802 (2.16% / 2.25%)]
北西 北西 = 44,602
[44,602 (12.37% / 12.88%)]
北北西 北北西 = 66,449
[66,449 (18.43% / 19.18%)]
北 = 7,892
[7,892 (2.19% / 2.28%)]

欠測回数 (14,127 / 3.92%)

風速

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 136,365
[136,365 (37.83% / 39.33%)] [136,365 / 346,733 (39.33)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 111,791
[111,791 (31.01% / 32.24%)] [248,156 / 210,368 (71.57)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 52,762
[52,762 (14.64% / 15.22%)] [300,918 / 98,577 (86.79)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 29,290
[29,290 (8.13% / 8.45%)] [330,208 / 45,815 (95.23)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 12,588
[12,588 (3.49% / 3.63%)] [342,796 / 16,525 (98.86)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 3,123
[3,123 (0.87% / 0.90%)] [345,919 / 3,937 (99.77)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 638
[638 (0.18% / 0.18%)] [346,557 / 814 (99.95)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 133
[133 (0.04% / 0.04%)] [346,690 / 176 (99.99)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 32
[32 (0.01% / 0.01%)] [346,722 / 43 (100.00)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 7
[7 (0.00% / 0.00%)] [346,729 / 11 (100.00)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 4
[4 (0.00% / 0.00%)] [346,733 / 4 (100.00)]

欠測回数 (13,757 / 3.82%)

気温

-9.5℃ - -8.6℃ -9.5℃ - -8.6℃ = 4
[4 (0.00% / 0.00%)] [4 / 346,737 (0.00)]
-8.5℃ - -7.6℃ -8.5℃ - -7.6℃ = 43
[43 (0.01% / 0.01%)] [47 / 346,733 (0.01)]
-7.5℃ - -6.6℃ -7.5℃ - -6.6℃ = 190
[190 (0.05% / 0.05%)] [237 / 346,690 (0.07)]
-6.5℃ - -5.6℃ -6.5℃ - -5.6℃ = 455
[455 (0.13% / 0.13%)] [692 / 346,500 (0.20)]
-5.5℃ - -4.6℃ -5.5℃ - -4.6℃ = 1,021
[1,021 (0.28% / 0.29%)] [1,713 / 346,045 (0.49)]
-4.5℃ - -3.6℃ -4.5℃ - -3.6℃ = 2,071
[2,071 (0.57% / 0.60%)] [3,784 / 345,024 (1.09)]
-3.5℃ - -2.6℃ -3.5℃ - -2.6℃ = 4,015
[4,015 (1.11% / 1.16%)] [7,799 / 342,953 (2.25)]
-2.5℃ - -1.6℃ -2.5℃ - -1.6℃ = 6,568
[6,568 (1.82% / 1.89%)] [14,367 / 338,938 (4.14)]
-1.5℃ - -0.6℃ -1.5℃ - -0.6℃ = 9,876
[9,876 (2.74% / 2.85%)] [24,243 / 332,370 (6.99)]
-0.5℃ - 0.4℃ -0.5℃ - 0.4℃ = 21,868
[21,868 (6.07% / 6.31%)] [46,111 / 322,494 (13.30)]
0.5℃ - 1.4℃ 0.5℃ - 1.4℃ = 11,186
[11,186 (3.10% / 3.23%)] [57,297 / 300,626 (16.52)]
1.5℃ - 2.4℃ 1.5℃ - 2.4℃ = 10,859
[10,859 (3.01% / 3.13%)] [68,156 / 289,440 (19.66)]
2.5℃ - 3.4℃ 2.5℃ - 3.4℃ = 10,408
[10,408 (2.89% / 3.00%)] [78,564 / 278,581 (22.66)]
3.5℃ - 4.4℃ 3.5℃ - 4.4℃ = 10,861
[10,861 (3.01% / 3.13%)] [89,425 / 268,173 (25.79)]
4.5℃ - 5.4℃ 4.5℃ - 5.4℃ = 10,605
[10,605 (2.94% / 3.06%)] [100,030 / 257,312 (28.85)]
5.5℃ - 6.4℃ 5.5℃ - 6.4℃ = 10,698
[10,698 (2.97% / 3.09%)] [110,728 / 246,707 (31.93)]
6.5℃ - 7.4℃ 6.5℃ - 7.4℃ = 10,723
[10,723 (2.97% / 3.09%)] [121,451 / 236,009 (35.03)]
7.5℃ - 8.4℃ 7.5℃ - 8.4℃ = 10,364
[10,364 (2.87% / 2.99%)] [131,815 / 225,286 (38.02)]
8.5℃ - 9.4℃ 8.5℃ - 9.4℃ = 10,362
[10,362 (2.87% / 2.99%)] [142,177 / 214,922 (41.00)]
9.5℃ - 10.4℃ 9.5℃ - 10.4℃ = 10,479
[10,479 (2.91% / 3.02%)] [152,656 / 204,560 (44.03)]
10.5℃ - 11.4℃ 10.5℃ - 11.4℃ = 10,770
[10,770 (2.99% / 3.11%)] [163,426 / 194,081 (47.13)]
11.5℃ - 12.4℃ 11.5℃ - 12.4℃ = 10,731
[10,731 (2.98% / 3.09%)] [174,157 / 183,311 (50.23)]
12.5℃ - 13.4℃ 12.5℃ - 13.4℃ = 10,824
[10,824 (3.00% / 3.12%)] [184,981 / 172,580 (53.35)]
13.5℃ - 14.4℃ 13.5℃ - 14.4℃ = 11,107
[11,107 (3.08% / 3.20%)] [196,088 / 161,756 (56.55)]
14.5℃ - 15.4℃ 14.5℃ - 15.4℃ = 11,023
[11,023 (3.06% / 3.18%)] [207,111 / 150,649 (59.73)]
15.5℃ - 16.4℃ 15.5℃ - 16.4℃ = 11,991
[11,991 (3.33% / 3.46%)] [219,102 / 139,626 (63.19)]
16.5℃ - 17.4℃ 16.5℃ - 17.4℃ = 12,124
[12,124 (3.36% / 3.50%)] [231,226 / 127,635 (66.69)]
17.5℃ - 18.4℃ 17.5℃ - 18.4℃ = 13,055
[13,055 (3.62% / 3.77%)] [244,281 / 115,511 (70.45)]
18.5℃ - 19.4℃ 18.5℃ - 19.4℃ = 13,083
[13,083 (3.63% / 3.77%)] [257,364 / 102,456 (74.22)]
19.5℃ - 20.4℃ 19.5℃ - 20.4℃ = 13,422
[13,422 (3.72% / 3.87%)] [270,786 / 89,373 (78.10)]
20.5℃ - 21.4℃ 20.5℃ - 21.4℃ = 13,284
[13,284 (3.68% / 3.83%)] [284,070 / 75,951 (81.93)]
21.5℃ - 22.4℃ 21.5℃ - 22.4℃ = 13,423
[13,423 (3.72% / 3.87%)] [297,493 / 62,667 (85.80)]
22.5℃ - 23.4℃ 22.5℃ - 23.4℃ = 11,564
[11,564 (3.21% / 3.34%)] [309,057 / 49,244 (89.13)]
23.5℃ - 24.4℃ 23.5℃ - 24.4℃ = 8,694
[8,694 (2.41% / 2.51%)] [317,751 / 37,680 (91.64)]
24.5℃ - 25.4℃ 24.5℃ - 25.4℃ = 6,371
[6,371 (1.77% / 1.84%)] [324,122 / 28,986 (93.48)]
25.5℃ - 26.4℃ 25.5℃ - 26.4℃ = 5,047
[5,047 (1.40% / 1.46%)] [329,169 / 22,615 (94.93)]
26.5℃ - 27.4℃ 26.5℃ - 27.4℃ = 4,101
[4,101 (1.14% / 1.18%)] [333,270 / 17,568 (96.12)]
27.5℃ - 28.4℃ 27.5℃ - 28.4℃ = 3,397
[3,397 (0.94% / 0.98%)] [336,667 / 13,467 (97.10)]
28.5℃ - 29.4℃ 28.5℃ - 29.4℃ = 2,810
[2,810 (0.78% / 0.81%)] [339,477 / 10,070 (97.91)]
29.5℃ - 30.4℃ 29.5℃ - 30.4℃ = 2,261
[2,261 (0.63% / 0.65%)] [341,738 / 7,260 (98.56)]
30.5℃ - 31.4℃ 30.5℃ - 31.4℃ = 1,806
[1,806 (0.50% / 0.52%)] [343,544 / 4,999 (99.08)]
31.5℃ - 32.4℃ 31.5℃ - 32.4℃ = 1,377
[1,377 (0.38% / 0.40%)] [344,921 / 3,193 (99.48)]
32.5℃ - 33.4℃ 32.5℃ - 33.4℃ = 895
[895 (0.25% / 0.26%)] [345,816 / 1,816 (99.73)]
33.5℃ - 34.4℃ 33.5℃ - 34.4℃ = 537
[537 (0.15% / 0.15%)] [346,353 / 921 (99.89)]
34.5℃ - 35.4℃ 34.5℃ - 35.4℃ = 273
[273 (0.08% / 0.08%)] [346,626 / 384 (99.97)]
35.5℃ - 36.4℃ 35.5℃ - 36.4℃ = 94
[94 (0.03% / 0.03%)] [346,720 / 111 (100.00)]
36.5℃ - 37.4℃ 36.5℃ - 37.4℃ = 14
[14 (0.00% / 0.00%)] [346,734 / 17 (100.00)]
37.5℃ - 38.4℃ 37.5℃ - 38.4℃ = 3
[3 (0.00% / 0.00%)] [346,737 / 3 (100.00)]

欠測回数 (13,753 / 3.82%)

日照時間

0.0h 0.0h = 257,817
[257,817 (71.52% / 74.78%)] [257,817 / 344,768 (74.78)]
0.1h 0.1h = 5,902
[5,902 (1.64% / 1.71%)] [263,719 / 86,951 (76.49)]
0.2h 0.2h = 4,509
[4,509 (1.25% / 1.31%)] [268,228 / 81,049 (77.80)]
0.3h 0.3h = 4,184
[4,184 (1.16% / 1.21%)] [272,412 / 76,540 (79.01)]
0.4h 0.4h = 4,060
[4,060 (1.13% / 1.18%)] [276,472 / 72,356 (80.19)]
0.5h 0.5h = 3,827
[3,827 (1.06% / 1.11%)] [280,299 / 68,296 (81.30)]
0.6h 0.6h = 3,998
[3,998 (1.11% / 1.16%)] [284,297 / 64,469 (82.46)]
0.7h 0.7h = 4,601
[4,601 (1.28% / 1.33%)] [288,898 / 60,471 (83.79)]
0.8h 0.8h = 5,563
[5,563 (1.54% / 1.61%)] [294,461 / 55,870 (85.41)]
0.9h 0.9h = 7,109
[7,109 (1.97% / 2.06%)] [301,570 / 50,307 (87.47)]
1.0h 1.0h = 43,198
[43,198 (11.98% / 12.53%)] [344,768 / 43,198 (100.00)]

欠測回数 (15,722 / 4.36%)