Station Number 48331
Prefecture Nagano [ Local Portal ]
Location 長野県北佐久郡軽井沢町大字長倉 (KITASAKU GUN KARUIZAWA MACHI, NAGANO KEN)
Months of Observations 476
Number of Observations 347,712
Period of Observations
Period Name Lat. Long. Height Anemometer
1974/11/01 -- 1975/12/01 KARUIZAWA 36.342N 138.547E 999m 0.0m
1975/12/02 -- 1988/12/31 KARUIZAWA 36.342N 138.547E 999m 15.1m
1989/01/01 -- 2009/09/30 KARUIZAWA 36.342N 138.547E 999m 15.1m
2009/10/01 -- 2014/11/26 KARUIZAWA 36.342N 138.547E 999m 15.1m
2014/11/27 -- 2015/08/99 KARUIZAWA 36.342N 138.547E 999m 18.5m
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
42276 ICHINOJIYAMA (Gunma) 10.50km 71deg.
48386 SAKU (Nagano) 12.27km 210deg.
42221 TASHIRO (Gunma) 15.40km 330deg.
48321 TOMI (Nagano) 15.41km 287deg.
42326 NISHINOMAKI (Gunma) 17.96km 126deg.
48381 TATESHINA (Nagano) 22.41km 249deg.
48451 MORAISAN (Nagano) 26.00km 182deg.
48256 UEDA (Nagano) 26.11km 284deg.
48456 JIKKOKUTOGE (Nagano) 27.42km 161deg.
48216 SUGADAIRA (Nagano) 29.00km 316deg.
48935 SUGADAIRA (Nagano) 29.12km 316deg.

Statistics for the Whole Period

Precipitation

0.0mm - 0.4mm 0.0mm - 0.4mm = 324,609
[324,609 (93.36% / 93.38%)] [324,609 / 347,625 (93.38%)]
0.5mm - 1.4mm 0.5mm - 1.4mm = 13,018
[13,018 (3.74% / 3.74%)] [337,627 / 23,016 (97.12%)]
1.5mm - 2.4mm 1.5mm - 2.4mm = 4,701
[4,701 (1.35% / 1.35%)] [342,328 / 9,998 (98.48%)]
2.5mm - 3.4mm 2.5mm - 3.4mm = 2,170
[2,170 (0.62% / 0.62%)] [344,498 / 5,297 (99.10%)]
3.5mm - 4.4mm 3.5mm - 4.4mm = 1,117
[1,117 (0.32% / 0.32%)] [345,615 / 3,127 (99.42%)]
4.5mm - 5.4mm 4.5mm - 5.4mm = 621
[621 (0.18% / 0.18%)] [346,236 / 2,010 (99.60%)]
5.5mm - 6.4mm 5.5mm - 6.4mm = 376
[376 (0.11% / 0.11%)] [346,612 / 1,389 (99.71%)]
6.5mm - 7.4mm 6.5mm - 7.4mm = 274
[274 (0.08% / 0.08%)] [346,886 / 1,013 (99.79%)]
7.5mm - 8.4mm 7.5mm - 8.4mm = 181
[181 (0.05% / 0.05%)] [347,067 / 739 (99.84%)]
8.5mm - 9.4mm 8.5mm - 9.4mm = 121
[121 (0.03% / 0.03%)] [347,188 / 558 (99.87%)]
9.5mm - 10.4mm 9.5mm - 10.4mm = 88
[88 (0.03% / 0.03%)] [347,276 / 437 (99.90%)]
10.5mm - 11.4mm 10.5mm - 11.4mm = 68
[68 (0.02% / 0.02%)] [347,344 / 349 (99.92%)]
11.5mm - 12.4mm 11.5mm - 12.4mm = 39
[39 (0.01% / 0.01%)] [347,383 / 281 (99.93%)]
12.5mm - 13.4mm 12.5mm - 13.4mm = 45
[45 (0.01% / 0.01%)] [347,428 / 242 (99.94%)]
13.5mm - 14.4mm 13.5mm - 14.4mm = 38
[38 (0.01% / 0.01%)] [347,466 / 197 (99.95%)]
14.5mm - 15.4mm 14.5mm - 15.4mm = 25
[25 (0.01% / 0.01%)] [347,491 / 159 (99.96%)]
15.5mm - 16.4mm 15.5mm - 16.4mm = 18
[18 (0.01% / 0.01%)] [347,509 / 134 (99.97%)]
16.5mm - 17.4mm 16.5mm - 17.4mm = 20
[20 (0.01% / 0.01%)] [347,529 / 116 (99.97%)]
17.5mm - 18.4mm 17.5mm - 18.4mm = 14
[14 (0.00% / 0.00%)] [347,543 / 96 (99.98%)]
18.5mm - 19.4mm 18.5mm - 19.4mm = 12
[12 (0.00% / 0.00%)] [347,555 / 82 (99.98%)]
19.5mm - 20.4mm 19.5mm - 20.4mm = 6
[6 (0.00% / 0.00%)] [347,561 / 70 (99.98%)]
20.5mm - 21.4mm 20.5mm - 21.4mm = 9
[9 (0.00% / 0.00%)] [347,570 / 64 (99.98%)]
21.5mm - 22.4mm 21.5mm - 22.4mm = 5
[5 (0.00% / 0.00%)] [347,575 / 55 (99.99%)]
22.5mm - 23.4mm 22.5mm - 23.4mm = 5
[5 (0.00% / 0.00%)] [347,580 / 50 (99.99%)]
23.5mm - 24.4mm 23.5mm - 24.4mm = 5
[5 (0.00% / 0.00%)] [347,585 / 45 (99.99%)]
24.5mm - 25.4mm 24.5mm - 25.4mm = 2
[2 (0.00% / 0.00%)] [347,587 / 40 (99.99%)]
25.5mm - 26.4mm 25.5mm - 26.4mm = 3
[3 (0.00% / 0.00%)] [347,590 / 38 (99.99%)]
26.5mm - 27.4mm 26.5mm - 27.4mm = 5
[5 (0.00% / 0.00%)] [347,595 / 35 (99.99%)]
27.5mm - 28.4mm 27.5mm - 28.4mm = 8
[8 (0.00% / 0.00%)] [347,603 / 30 (99.99%)]
28.5mm - 29.4mm 28.5mm - 29.4mm = 4
[4 (0.00% / 0.00%)] [347,607 / 22 (99.99%)]
30.5mm - 31.4mm 30.5mm - 31.4mm = 4
[4 (0.00% / 0.00%)] [347,611 / 18 (100.00%)]
31.5mm - 32.4mm 31.5mm - 32.4mm = 2
[2 (0.00% / 0.00%)] [347,613 / 14 (100.00%)]
32.5mm - 33.4mm 32.5mm - 33.4mm = 4
[4 (0.00% / 0.00%)] [347,617 / 12 (100.00%)]
33.5mm - 34.4mm 33.5mm - 34.4mm = 3
[3 (0.00% / 0.00%)] [347,620 / 8 (100.00%)]
34.5mm - 35.4mm 34.5mm - 35.4mm = 2
[2 (0.00% / 0.00%)] [347,622 / 5 (100.00%)]
35.5mm - 36.4mm 35.5mm - 36.4mm = 1
[1 (0.00% / 0.00%)] [347,623 / 3 (100.00%)]
37.5mm - 38.4mm 37.5mm - 38.4mm = 1
[1 (0.00% / 0.00%)] [347,624 / 2 (100.00%)]
53.5mm - 54.4mm 53.5mm - 54.4mm = 1
[1 (0.00% / 0.00%)] [347,625 / 1 (100.00%)]

Missing observations (87 / 0.03%)

Wind Direction

Calm Calm = 22,119
[22,119 (6.36% / 6.36%)] [0 / 0 (NA)]
NNE NNE = 16,238
[16,238 (4.67% / 4.67%)] [0 / 0 (NA)]
NE NE = 39,798
[39,798 (11.45% / 11.45%)] [0 / 0 (NA)]
ENE ENE = 41,815
[41,815 (12.03% / 12.03%)] [0 / 0 (NA)]
E E = 21,489
[21,489 (6.18% / 6.18%)] [0 / 0 (NA)]
ESE ESE = 8,633
[8,633 (2.48% / 2.48%)] [0 / 0 (NA)]
SE SE = 4,492
[4,492 (1.29% / 1.29%)] [0 / 0 (NA)]
SSE SSE = 3,297
[3,297 (0.95% / 0.95%)] [0 / 0 (NA)]
S S = 5,238
[5,238 (1.51% / 1.51%)] [0 / 0 (NA)]
SSW SSW = 13,866
[13,866 (3.99% / 3.99%)] [0 / 0 (NA)]
SW SW = 39,473
[39,473 (11.35% / 11.35%)] [0 / 0 (NA)]
WSW WSW = 49,845
[49,845 (14.34% / 14.34%)] [0 / 0 (NA)]
W W = 30,607
[30,607 (8.80% / 8.80%)] [0 / 0 (NA)]
WNW WNW = 17,993
[17,993 (5.17% / 5.18%)] [0 / 0 (NA)]
NW NW = 11,144
[11,144 (3.20% / 3.21%)] [0 / 0 (NA)]
NNW NNW = 8,463
[8,463 (2.43% / 2.43%)] [0 / 0 (NA)]
N N = 13,152
[13,152 (3.78% / 3.78%)] [0 / 0 (NA)]

Missing observations (50 / 0.01%)

Wind Speed

0.0m/s - 0.4m/s 0.0m/s - 0.4m/s = 23,461
[23,461 (6.75% / 6.75%)] [23,461 / 347,663 (6.75%)]
0.5m/s - 1.4m/s 0.5m/s - 1.4m/s = 128,781
[128,781 (37.04% / 37.04%)] [152,242 / 324,202 (43.79%)]
1.5m/s - 2.4m/s 1.5m/s - 2.4m/s = 120,892
[120,892 (34.77% / 34.77%)] [273,134 / 195,421 (78.56%)]
2.5m/s - 3.4m/s 2.5m/s - 3.4m/s = 48,894
[48,894 (14.06% / 14.06%)] [322,028 / 74,529 (92.63%)]
3.5m/s - 4.4m/s 3.5m/s - 4.4m/s = 18,297
[18,297 (5.26% / 5.26%)] [340,325 / 25,635 (97.89%)]
4.5m/s - 5.4m/s 4.5m/s - 5.4m/s = 5,755
[5,755 (1.66% / 1.66%)] [346,080 / 7,338 (99.54%)]
5.5m/s - 6.4m/s 5.5m/s - 6.4m/s = 1,289
[1,289 (0.37% / 0.37%)] [347,369 / 1,583 (99.92%)]
6.5m/s - 7.4m/s 6.5m/s - 7.4m/s = 249
[249 (0.07% / 0.07%)] [347,618 / 294 (99.99%)]
7.5m/s - 8.4m/s 7.5m/s - 8.4m/s = 39
[39 (0.01% / 0.01%)] [347,657 / 45 (100.00%)]
8.5m/s - 9.4m/s 8.5m/s - 9.4m/s = 4
[4 (0.00% / 0.00%)] [347,661 / 6 (100.00%)]
10.5m/s - 11.4m/s 10.5m/s - 11.4m/s = 2
[2 (0.00% / 0.00%)] [347,663 / 2 (100.00%)]

Missing observations (49 / 0.01%)

Temperature

-18.5C - -17.6C -18.5C - -17.6C = 5
[5 (0.00% / 0.00%)] [5 / 347,687 (0.00%)]
-17.5C - -16.6C -17.5C - -16.6C = 17
[17 (0.00% / 0.00%)] [22 / 347,682 (0.01%)]
-16.5C - -15.6C -16.5C - -15.6C = 48
[48 (0.01% / 0.01%)] [70 / 347,665 (0.02%)]
-15.5C - -14.6C -15.5C - -14.6C = 86
[86 (0.02% / 0.02%)] [156 / 347,617 (0.04%)]
-14.5C - -13.6C -14.5C - -13.6C = 173
[173 (0.05% / 0.05%)] [329 / 347,531 (0.09%)]
-13.5C - -12.6C -13.5C - -12.6C = 301
[301 (0.09% / 0.09%)] [630 / 347,358 (0.18%)]
-12.5C - -11.6C -12.5C - -11.6C = 576
[576 (0.17% / 0.17%)] [1,206 / 347,057 (0.35%)]
-11.5C - -10.6C -11.5C - -10.6C = 928
[928 (0.27% / 0.27%)] [2,134 / 346,481 (0.61%)]
-10.5C - -9.6C -10.5C - -9.6C = 1,569
[1,569 (0.45% / 0.45%)] [3,703 / 345,553 (1.07%)]
-9.5C - -8.6C -9.5C - -8.6C = 2,624
[2,624 (0.75% / 0.75%)] [6,327 / 343,984 (1.82%)]
-8.5C - -7.6C -8.5C - -7.6C = 3,796
[3,796 (1.09% / 1.09%)] [10,123 / 341,360 (2.91%)]
-7.5C - -6.6C -7.5C - -6.6C = 4,859
[4,859 (1.40% / 1.40%)] [14,982 / 337,564 (4.31%)]
-6.5C - -5.6C -6.5C - -5.6C = 6,175
[6,175 (1.78% / 1.78%)] [21,157 / 332,705 (6.09%)]
-5.5C - -4.6C -5.5C - -4.6C = 7,066
[7,066 (2.03% / 2.03%)] [28,223 / 326,530 (8.12%)]
-4.5C - -3.6C -4.5C - -3.6C = 8,263
[8,263 (2.38% / 2.38%)] [36,486 / 319,464 (10.49%)]
-3.5C - -2.6C -3.5C - -2.6C = 9,439
[9,439 (2.71% / 2.71%)] [45,925 / 311,201 (13.21%)]
-2.5C - -1.6C -2.5C - -1.6C = 11,487
[11,487 (3.30% / 3.30%)] [57,412 / 301,762 (16.51%)]
-1.5C - -0.6C -1.5C - -0.6C = 11,964
[11,964 (3.44% / 3.44%)] [69,376 / 290,275 (19.95%)]
-0.5C - 0.4C -0.5C - 0.4C = 23,019
[23,019 (6.62% / 6.62%)] [92,395 / 278,311 (26.57%)]
0.5C - 1.4C 0.5C - 1.4C = 10,799
[10,799 (3.11% / 3.11%)] [103,194 / 255,292 (29.68%)]
1.5C - 2.4C 1.5C - 2.4C = 9,568
[9,568 (2.75% / 2.75%)] [112,762 / 244,493 (32.43%)]
2.5C - 3.4C 2.5C - 3.4C = 9,739
[9,739 (2.80% / 2.80%)] [122,501 / 234,925 (35.23%)]
3.5C - 4.4C 3.5C - 4.4C = 9,654
[9,654 (2.78% / 2.78%)] [132,155 / 225,186 (38.01%)]
4.5C - 5.4C 4.5C - 5.4C = 9,704
[9,704 (2.79% / 2.79%)] [141,859 / 215,532 (40.80%)]
5.5C - 6.4C 5.5C - 6.4C = 9,315
[9,315 (2.68% / 2.68%)] [151,174 / 205,828 (43.48%)]
6.5C - 7.4C 6.5C - 7.4C = 10,006
[10,006 (2.88% / 2.88%)] [161,180 / 196,513 (46.36%)]
7.5C - 8.4C 7.5C - 8.4C = 9,753
[9,753 (2.80% / 2.81%)] [170,933 / 186,507 (49.16%)]
8.5C - 9.4C 8.5C - 9.4C = 10,475
[10,475 (3.01% / 3.01%)] [181,408 / 176,754 (52.18%)]
9.5C - 10.4C 9.5C - 10.4C = 10,445
[10,445 (3.00% / 3.00%)] [191,853 / 166,279 (55.18%)]
10.5C - 11.4C 10.5C - 11.4C = 11,252
[11,252 (3.24% / 3.24%)] [203,105 / 155,834 (58.42%)]
11.5C - 12.4C 11.5C - 12.4C = 11,176
[11,176 (3.21% / 3.21%)] [214,281 / 144,582 (61.63%)]
12.5C - 13.4C 12.5C - 13.4C = 11,634
[11,634 (3.35% / 3.35%)] [225,915 / 133,406 (64.98%)]
13.5C - 14.4C 13.5C - 14.4C = 11,871
[11,871 (3.41% / 3.41%)] [237,786 / 121,772 (68.39%)]
14.5C - 15.4C 14.5C - 15.4C = 12,939
[12,939 (3.72% / 3.72%)] [250,725 / 109,901 (72.11%)]
15.5C - 16.4C 15.5C - 16.4C = 12,953
[12,953 (3.73% / 3.73%)] [263,678 / 96,962 (75.84%)]
16.5C - 17.4C 16.5C - 17.4C = 12,866
[12,866 (3.70% / 3.70%)] [276,544 / 84,009 (79.54%)]
17.5C - 18.4C 17.5C - 18.4C = 12,793
[12,793 (3.68% / 3.68%)] [289,337 / 71,143 (83.22%)]
18.5C - 19.4C 18.5C - 19.4C = 12,797
[12,797 (3.68% / 3.68%)] [302,134 / 58,350 (86.90%)]
19.5C - 20.4C 19.5C - 20.4C = 10,891
[10,891 (3.13% / 3.13%)] [313,025 / 45,553 (90.03%)]
20.5C - 21.4C 20.5C - 21.4C = 9,173
[9,173 (2.64% / 2.64%)] [322,198 / 34,662 (92.67%)]
21.5C - 22.4C 21.5C - 22.4C = 6,437
[6,437 (1.85% / 1.85%)] [328,635 / 25,489 (94.52%)]
22.5C - 23.4C 22.5C - 23.4C = 4,999
[4,999 (1.44% / 1.44%)] [333,634 / 19,052 (95.96%)]
23.5C - 24.4C 23.5C - 24.4C = 4,168
[4,168 (1.20% / 1.20%)] [337,802 / 14,053 (97.16%)]
24.5C - 25.4C 24.5C - 25.4C = 3,291
[3,291 (0.95% / 0.95%)] [341,093 / 9,885 (98.10%)]
25.5C - 26.4C 25.5C - 26.4C = 2,409
[2,409 (0.69% / 0.69%)] [343,502 / 6,594 (98.80%)]
26.5C - 27.4C 26.5C - 27.4C = 1,866
[1,866 (0.54% / 0.54%)] [345,368 / 4,185 (99.33%)]
27.5C - 28.4C 27.5C - 28.4C = 1,202
[1,202 (0.35% / 0.35%)] [346,570 / 2,319 (99.68%)]
28.5C - 29.4C 28.5C - 29.4C = 703
[703 (0.20% / 0.20%)] [347,273 / 1,117 (99.88%)]
29.5C - 30.4C 29.5C - 30.4C = 298
[298 (0.09% / 0.09%)] [347,571 / 414 (99.97%)]
30.5C - 31.4C 30.5C - 31.4C = 99
[99 (0.03% / 0.03%)] [347,670 / 116 (100.00%)]
31.5C - 32.4C 31.5C - 32.4C = 15
[15 (0.00% / 0.00%)] [347,685 / 17 (100.00%)]
32.5C - 33.4C 32.5C - 33.4C = 2
[2 (0.00% / 0.00%)] [347,687 / 2 (100.00%)]

Missing observations (25 / 0.01%)

Sunshine Duration

0.0h 0.0h = 238,035
[238,035 (68.46% / 68.65%)] [238,035 / 346,718 (68.65%)]
0.1h 0.1h = 8,054
[8,054 (2.32% / 2.32%)] [246,089 / 108,683 (70.98%)]
0.2h 0.2h = 6,222
[6,222 (1.79% / 1.79%)] [252,311 / 100,629 (72.77%)]
0.3h 0.3h = 5,594
[5,594 (1.61% / 1.61%)] [257,905 / 94,407 (74.38%)]
0.4h 0.4h = 5,188
[5,188 (1.49% / 1.50%)] [263,093 / 88,813 (75.88%)]
0.5h 0.5h = 5,140
[5,140 (1.48% / 1.48%)] [268,233 / 83,625 (77.36%)]
0.6h 0.6h = 5,241
[5,241 (1.51% / 1.51%)] [273,474 / 78,485 (78.88%)]
0.7h 0.7h = 5,628
[5,628 (1.62% / 1.62%)] [279,102 / 73,244 (80.50%)]
0.8h 0.8h = 6,302
[6,302 (1.81% / 1.82%)] [285,404 / 67,616 (82.32%)]
0.9h 0.9h = 8,551
[8,551 (2.46% / 2.47%)] [293,955 / 61,314 (84.78%)]
1.0h 1.0h = 52,763
[52,763 (15.17% / 15.22%)] [346,718 / 52,763 (100.00%)]

Missing observations (994 / 0.29%)

Snow Depth

0cm 0cm = 18,444
[18,444 (5.30% / 65.24%)] [18,444 / 28,270 (65.24%)]
1cm - 5cm 1cm - 5cm = 2,630
[2,630 (0.76% / 9.30%)] [21,074 / 9,826 (74.55%)]
6cm - 10cm 6cm - 10cm = 1,860
[1,860 (0.53% / 6.58%)] [22,934 / 7,196 (81.12%)]
11cm - 15cm 11cm - 15cm = 2,157
[2,157 (0.62% / 7.63%)] [25,091 / 5,336 (88.75%)]
16cm - 20cm 16cm - 20cm = 1,215
[1,215 (0.35% / 4.30%)] [26,306 / 3,179 (93.05%)]
21cm - 25cm 21cm - 25cm = 1,137
[1,137 (0.33% / 4.02%)] [27,443 / 1,964 (97.07%)]
26cm - 30cm 26cm - 30cm = 279
[279 (0.08% / 0.99%)] [27,722 / 827 (98.06%)]
31cm - 35cm 31cm - 35cm = 180
[180 (0.05% / 0.64%)] [27,902 / 548 (98.70%)]
36cm - 40cm 36cm - 40cm = 42
[42 (0.01% / 0.15%)] [27,944 / 368 (98.85%)]
41cm - 45cm 41cm - 45cm = 14
[14 (0.00% / 0.05%)] [27,958 / 326 (98.90%)]
46cm - 50cm 46cm - 50cm = 33
[33 (0.01% / 0.12%)] [27,991 / 312 (99.01%)]
51cm - 55cm 51cm - 55cm = 26
[26 (0.01% / 0.09%)] [28,017 / 279 (99.11%)]
56cm - 60cm 56cm - 60cm = 32
[32 (0.01% / 0.11%)] [28,049 / 253 (99.22%)]
61cm - 65cm 61cm - 65cm = 52
[52 (0.01% / 0.18%)] [28,101 / 221 (99.40%)]
66cm - 70cm 66cm - 70cm = 41
[41 (0.01% / 0.15%)] [28,142 / 169 (99.55%)]
71cm - 75cm 71cm - 75cm = 36
[36 (0.01% / 0.13%)] [28,178 / 128 (99.67%)]
76cm - 80cm 76cm - 80cm = 26
[26 (0.01% / 0.09%)] [28,204 / 92 (99.77%)]
81cm - 85cm 81cm - 85cm = 17
[17 (0.00% / 0.06%)] [28,221 / 66 (99.83%)]
86cm - 90cm 86cm - 90cm = 19
[19 (0.01% / 0.07%)] [28,240 / 49 (99.89%)]
91cm - 95cm 91cm - 95cm = 20
[20 (0.01% / 0.07%)] [28,260 / 30 (99.96%)]
96cm - 100cm 96cm - 100cm = 10
[10 (0.00% / 0.04%)] [28,270 / 10 (100.00%)]

Missing observations (319,442 / 91.87%)