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 499
観測回数 364,162
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12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 = 338,505
[338,505 (92.95% / 93.50%)] [338,505 / 362,020 (93.50)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 13,727
[13,727 (3.77% / 3.79%)] [352,232 / 23,515 (97.30)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 4,377
[4,377 (1.20% / 1.21%)] [356,609 / 9,788 (98.51)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 2,048
[2,048 (0.56% / 0.57%)] [358,657 / 5,411 (99.07)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 1,107
[1,107 (0.30% / 0.31%)] [359,764 / 3,363 (99.38)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 640
[640 (0.18% / 0.18%)] [360,404 / 2,256 (99.55)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 423
[423 (0.12% / 0.12%)] [360,827 / 1,616 (99.67)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 282
[282 (0.08% / 0.08%)] [361,109 / 1,193 (99.75)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 188
[188 (0.05% / 0.05%)] [361,297 / 911 (99.80)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 137
[137 (0.04% / 0.04%)] [361,434 / 723 (99.84)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 114
[114 (0.03% / 0.03%)] [361,548 / 586 (99.87)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 74
[74 (0.02% / 0.02%)] [361,622 / 472 (99.89)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 53
[53 (0.01% / 0.01%)] [361,675 / 398 (99.90)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 55
[55 (0.02% / 0.02%)] [361,730 / 345 (99.92)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 39
[39 (0.01% / 0.01%)] [361,769 / 290 (99.93)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 35
[35 (0.01% / 0.01%)] [361,804 / 251 (99.94)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 27
[27 (0.01% / 0.01%)] [361,831 / 216 (99.95)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 25
[25 (0.01% / 0.01%)] [361,856 / 189 (99.95)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 19
[19 (0.01% / 0.01%)] [361,875 / 164 (99.96)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 14
[14 (0.00% / 0.00%)] [361,889 / 145 (99.96)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 15
[15 (0.00% / 0.00%)] [361,904 / 131 (99.97)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 9
[9 (0.00% / 0.00%)] [361,913 / 116 (99.97)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 15
[15 (0.00% / 0.00%)] [361,928 / 107 (99.97)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 9
[9 (0.00% / 0.00%)] [361,937 / 92 (99.98)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 9
[9 (0.00% / 0.00%)] [361,946 / 83 (99.98)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 10
[10 (0.00% / 0.00%)] [361,956 / 74 (99.98)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 9
[9 (0.00% / 0.00%)] [361,965 / 64 (99.98)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 7
[7 (0.00% / 0.00%)] [361,972 / 55 (99.99)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 2
[2 (0.00% / 0.00%)] [361,974 / 48 (99.99)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 6
[6 (0.00% / 0.00%)] [361,980 / 46 (99.99)]
29.5mm - 30.4mm 29.5mm - 30.4mm = 4
[4 (0.00% / 0.00%)] [361,984 / 40 (99.99)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 2
[2 (0.00% / 0.00%)] [361,986 / 36 (99.99)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 4
[4 (0.00% / 0.00%)] [361,990 / 34 (99.99)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 1
[1 (0.00% / 0.00%)] [361,991 / 30 (99.99)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 1
[1 (0.00% / 0.00%)] [361,992 / 29 (99.99)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 1
[1 (0.00% / 0.00%)] [361,993 / 28 (99.99)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 2
[2 (0.00% / 0.00%)] [361,995 / 27 (99.99)]
36.5mm - 37.4mm 36.5mm - 37.4mm = 1
[1 (0.00% / 0.00%)] [361,996 / 25 (99.99)]
38.5mm - 39.4mm 38.5mm - 39.4mm = 3
[3 (0.00% / 0.00%)] [361,999 / 24 (99.99)]
39.5mm - 40.4mm 39.5mm - 40.4mm = 2
[2 (0.00% / 0.00%)] [362,001 / 21 (99.99)]
40.5mm - 41.4mm 40.5mm - 41.4mm = 5
[5 (0.00% / 0.00%)] [362,006 / 19 (100.00)]
41.5mm - 42.4mm 41.5mm - 42.4mm = 1
[1 (0.00% / 0.00%)] [362,007 / 14 (100.00)]
43.5mm - 44.4mm 43.5mm - 44.4mm = 2
[2 (0.00% / 0.00%)] [362,009 / 13 (100.00)]
44.5mm - 45.4mm 44.5mm - 45.4mm = 2
[2 (0.00% / 0.00%)] [362,011 / 11 (100.00)]
45.5mm - 46.4mm 45.5mm - 46.4mm = 1
[1 (0.00% / 0.00%)] [362,012 / 9 (100.00)]
46.5mm - 47.4mm 46.5mm - 47.4mm = 2
[2 (0.00% / 0.00%)] [362,014 / 8 (100.00)]
47.5mm - 48.4mm 47.5mm - 48.4mm = 1
[1 (0.00% / 0.00%)] [362,015 / 6 (100.00)]
48.5mm - 49.4mm 48.5mm - 49.4mm = 1
[1 (0.00% / 0.00%)] [362,016 / 5 (100.00)]
50.5mm - 51.4mm 50.5mm - 51.4mm = 1
[1 (0.00% / 0.00%)] [362,017 / 4 (100.00)]
53.5mm - 54.4mm 53.5mm - 54.4mm = 1
[1 (0.00% / 0.00%)] [362,018 / 3 (100.00)]
68.5mm - 69.4mm 68.5mm - 69.4mm = 2
[2 (0.00% / 0.00%)] [362,020 / 2 (100.00)]

欠測回数 (2,142 / 0.59%)

風向

静穏 静穏 = 129,190
[129,190 (35.48% / 36.91%)]
北北東 北北東 = 3,107
[3,107 (0.85% / 0.89%)]
北東 北東 = 1,856
[1,856 (0.51% / 0.53%)]
東北東 東北東 = 1,341
[1,341 (0.37% / 0.38%)]
東 = 1,565
[1,565 (0.43% / 0.45%)]
東南東 東南東 = 2,618
[2,618 (0.72% / 0.75%)]
南東 南東 = 5,471
[5,471 (1.50% / 1.56%)]
南南東 南南東 = 25,820
[25,820 (7.09% / 7.38%)]
南 = 33,038
[33,038 (9.07% / 9.44%)]
南南西 南南西 = 8,075
[8,075 (2.22% / 2.31%)]
南西 南西 = 3,467
[3,467 (0.95% / 0.99%)]
西南西 西南西 = 2,735
[2,735 (0.75% / 0.78%)]
西 西 = 3,388
[3,388 (0.93% / 0.97%)]
西北西 西北西 = 7,946
[7,946 (2.18% / 2.27%)]
北西 北西 = 45,262
[45,262 (12.43% / 12.93%)]
北北西 北北西 = 67,193
[67,193 (18.45% / 19.20%)]
北 = 7,961
[7,961 (2.19% / 2.27%)]

欠測回数 (14,129 / 3.88%)

風速

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 137,839
[137,839 (37.85% / 39.34%)] [137,839 / 350,403 (39.34)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 113,012
[113,012 (31.03% / 32.25%)] [250,851 / 212,564 (71.59)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 53,291
[53,291 (14.63% / 15.21%)] [304,142 / 99,552 (86.80)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 29,578
[29,578 (8.12% / 8.44%)] [333,720 / 46,261 (95.24)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 12,711
[12,711 (3.49% / 3.63%)] [346,431 / 16,683 (98.87)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 3,150
[3,150 (0.86% / 0.90%)] [349,581 / 3,972 (99.77)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 644
[644 (0.18% / 0.18%)] [350,225 / 822 (99.95)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 133
[133 (0.04% / 0.04%)] [350,358 / 178 (99.99)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 34
[34 (0.01% / 0.01%)] [350,392 / 45 (100.00)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 7
[7 (0.00% / 0.00%)] [350,399 / 11 (100.00)]
9.5m/s - 10.4m/s 9.5m/s - 10.4m/s = 4
[4 (0.00% / 0.00%)] [350,403 / 4 (100.00)]

欠測回数 (13,759 / 3.78%)

気温

-9.5℃ - -8.6℃ -9.5℃ - -8.6℃ = 4
[4 (0.00% / 0.00%)] [4 / 350,401 (0.00)]
-8.5℃ - -7.6℃ -8.5℃ - -7.6℃ = 43
[43 (0.01% / 0.01%)] [47 / 350,397 (0.01)]
-7.5℃ - -6.6℃ -7.5℃ - -6.6℃ = 190
[190 (0.05% / 0.05%)] [237 / 350,354 (0.07)]
-6.5℃ - -5.6℃ -6.5℃ - -5.6℃ = 455
[455 (0.12% / 0.13%)] [692 / 350,164 (0.20)]
-5.5℃ - -4.6℃ -5.5℃ - -4.6℃ = 1,021
[1,021 (0.28% / 0.29%)] [1,713 / 349,709 (0.49)]
-4.5℃ - -3.6℃ -4.5℃ - -3.6℃ = 2,073
[2,073 (0.57% / 0.59%)] [3,786 / 348,688 (1.08)]
-3.5℃ - -2.6℃ -3.5℃ - -2.6℃ = 4,037
[4,037 (1.11% / 1.15%)] [7,823 / 346,615 (2.23)]
-2.5℃ - -1.6℃ -2.5℃ - -1.6℃ = 6,647
[6,647 (1.83% / 1.90%)] [14,470 / 342,578 (4.13)]
-1.5℃ - -0.6℃ -1.5℃ - -0.6℃ = 9,969
[9,969 (2.74% / 2.85%)] [24,439 / 335,931 (6.97)]
-0.5℃ - 0.4℃ -0.5℃ - 0.4℃ = 22,072
[22,072 (6.06% / 6.30%)] [46,511 / 325,962 (13.27)]
0.5℃ - 1.4℃ 0.5℃ - 1.4℃ = 11,259
[11,259 (3.09% / 3.21%)] [57,770 / 303,890 (16.49)]
1.5℃ - 2.4℃ 1.5℃ - 2.4℃ = 10,953
[10,953 (3.01% / 3.13%)] [68,723 / 292,631 (19.61)]
2.5℃ - 3.4℃ 2.5℃ - 3.4℃ = 10,520
[10,520 (2.89% / 3.00%)] [79,243 / 281,678 (22.61)]
3.5℃ - 4.4℃ 3.5℃ - 4.4℃ = 10,956
[10,956 (3.01% / 3.13%)] [90,199 / 271,158 (25.74)]
4.5℃ - 5.4℃ 4.5℃ - 5.4℃ = 10,691
[10,691 (2.94% / 3.05%)] [100,890 / 260,202 (28.79)]
5.5℃ - 6.4℃ 5.5℃ - 6.4℃ = 10,807
[10,807 (2.97% / 3.08%)] [111,697 / 249,511 (31.88)]
6.5℃ - 7.4℃ 6.5℃ - 7.4℃ = 10,835
[10,835 (2.98% / 3.09%)] [122,532 / 238,704 (34.97)]
7.5℃ - 8.4℃ 7.5℃ - 8.4℃ = 10,478
[10,478 (2.88% / 2.99%)] [133,010 / 227,869 (37.96)]
8.5℃ - 9.4℃ 8.5℃ - 9.4℃ = 10,500
[10,500 (2.88% / 3.00%)] [143,510 / 217,391 (40.96)]
9.5℃ - 10.4℃ 9.5℃ - 10.4℃ = 10,601
[10,601 (2.91% / 3.03%)] [154,111 / 206,891 (43.98)]
10.5℃ - 11.4℃ 10.5℃ - 11.4℃ = 10,875
[10,875 (2.99% / 3.10%)] [164,986 / 196,290 (47.08)]
11.5℃ - 12.4℃ 11.5℃ - 12.4℃ = 10,817
[10,817 (2.97% / 3.09%)] [175,803 / 185,415 (50.17)]
12.5℃ - 13.4℃ 12.5℃ - 13.4℃ = 10,946
[10,946 (3.01% / 3.12%)] [186,749 / 174,598 (53.30)]
13.5℃ - 14.4℃ 13.5℃ - 14.4℃ = 11,212
[11,212 (3.08% / 3.20%)] [197,961 / 163,652 (56.50)]
14.5℃ - 15.4℃ 14.5℃ - 15.4℃ = 11,165
[11,165 (3.07% / 3.19%)] [209,126 / 152,440 (59.68)]
15.5℃ - 16.4℃ 15.5℃ - 16.4℃ = 12,144
[12,144 (3.33% / 3.47%)] [221,270 / 141,275 (63.15)]
16.5℃ - 17.4℃ 16.5℃ - 17.4℃ = 12,246
[12,246 (3.36% / 3.49%)] [233,516 / 129,131 (66.64)]
17.5℃ - 18.4℃ 17.5℃ - 18.4℃ = 13,156
[13,156 (3.61% / 3.75%)] [246,672 / 116,885 (70.40)]
18.5℃ - 19.4℃ 18.5℃ - 19.4℃ = 13,213
[13,213 (3.63% / 3.77%)] [259,885 / 103,729 (74.17)]
19.5℃ - 20.4℃ 19.5℃ - 20.4℃ = 13,575
[13,575 (3.73% / 3.87%)] [273,460 / 90,516 (78.04)]
20.5℃ - 21.4℃ 20.5℃ - 21.4℃ = 13,446
[13,446 (3.69% / 3.84%)] [286,906 / 76,941 (81.88)]
21.5℃ - 22.4℃ 21.5℃ - 22.4℃ = 13,590
[13,590 (3.73% / 3.88%)] [300,496 / 63,495 (85.76)]
22.5℃ - 23.4℃ 22.5℃ - 23.4℃ = 11,725
[11,725 (3.22% / 3.35%)] [312,221 / 49,905 (89.10)]
23.5℃ - 24.4℃ 23.5℃ - 24.4℃ = 8,811
[8,811 (2.42% / 2.51%)] [321,032 / 38,180 (91.62)]
24.5℃ - 25.4℃ 24.5℃ - 25.4℃ = 6,502
[6,502 (1.79% / 1.86%)] [327,534 / 29,369 (93.47)]
25.5℃ - 26.4℃ 25.5℃ - 26.4℃ = 5,112
[5,112 (1.40% / 1.46%)] [332,646 / 22,867 (94.93)]
26.5℃ - 27.4℃ 26.5℃ - 27.4℃ = 4,151
[4,151 (1.14% / 1.18%)] [336,797 / 17,755 (96.12)]
27.5℃ - 28.4℃ 27.5℃ - 28.4℃ = 3,444
[3,444 (0.95% / 0.98%)] [340,241 / 13,604 (97.10)]
28.5℃ - 29.4℃ 28.5℃ - 29.4℃ = 2,847
[2,847 (0.78% / 0.81%)] [343,088 / 10,160 (97.91)]
29.5℃ - 30.4℃ 29.5℃ - 30.4℃ = 2,290
[2,290 (0.63% / 0.65%)] [345,378 / 7,313 (98.57)]
30.5℃ - 31.4℃ 30.5℃ - 31.4℃ = 1,816
[1,816 (0.50% / 0.52%)] [347,194 / 5,023 (99.08)]
31.5℃ - 32.4℃ 31.5℃ - 32.4℃ = 1,384
[1,384 (0.38% / 0.39%)] [348,578 / 3,207 (99.48)]
32.5℃ - 33.4℃ 32.5℃ - 33.4℃ = 899
[899 (0.25% / 0.26%)] [349,477 / 1,823 (99.74)]
33.5℃ - 34.4℃ 33.5℃ - 34.4℃ = 539
[539 (0.15% / 0.15%)] [350,016 / 924 (99.89)]
34.5℃ - 35.4℃ 34.5℃ - 35.4℃ = 274
[274 (0.08% / 0.08%)] [350,290 / 385 (99.97)]
35.5℃ - 36.4℃ 35.5℃ - 36.4℃ = 94
[94 (0.03% / 0.03%)] [350,384 / 111 (100.00)]
36.5℃ - 37.4℃ 36.5℃ - 37.4℃ = 14
[14 (0.00% / 0.00%)] [350,398 / 17 (100.00)]
37.5℃ - 38.4℃ 37.5℃ - 38.4℃ = 3
[3 (0.00% / 0.00%)] [350,401 / 3 (100.00)]

欠測回数 (13,761 / 3.78%)

日照時間

0.0h 0.0h = 260,581
[260,581 (71.56% / 74.79%)] [260,581 / 348,437 (74.79)]
0.1h 0.1h = 5,972
[5,972 (1.64% / 1.71%)] [266,553 / 87,856 (76.50)]
0.2h 0.2h = 4,553
[4,553 (1.25% / 1.31%)] [271,106 / 81,884 (77.81)]
0.3h 0.3h = 4,253
[4,253 (1.17% / 1.22%)] [275,359 / 77,331 (79.03)]
0.4h 0.4h = 4,120
[4,120 (1.13% / 1.18%)] [279,479 / 73,078 (80.21)]
0.5h 0.5h = 3,874
[3,874 (1.06% / 1.11%)] [283,353 / 68,958 (81.32)]
0.6h 0.6h = 4,015
[4,015 (1.10% / 1.15%)] [287,368 / 65,084 (82.47)]
0.7h 0.7h = 4,644
[4,644 (1.28% / 1.33%)] [292,012 / 61,069 (83.81)]
0.8h 0.8h = 5,622
[5,622 (1.54% / 1.61%)] [297,634 / 56,425 (85.42)]
0.9h 0.9h = 7,169
[7,169 (1.97% / 2.06%)] [304,803 / 50,803 (87.48)]
1.0h 1.0h = 43,634
[43,634 (11.98% / 12.52%)] [348,437 / 43,634 (100.00)]

欠測回数 (15,725 / 4.32%)