Northern Madison

Yellowstone Club Base

The Yellowstone Base Area weather station is located at elevation 7300 ft. The site measures air temp, relative humidity, snow accumulations, and snow water content. Wind speed and direction are measured on tower 2 of the Lodge Lift. The 24 hr snow sensor is swept clear each day.

Click here to see the raw weather data.

Jump to table bottom
Date Hour Avg Speed Avg Dir Max Gust Avg Temp Avg RH Barom H2O New Snow Total Snow
6 25 700 1 NW - 324 7 47 85 30.13 0.00 -6999 -6999
6 25 600 5 W - 279 9 45 90 30.12 0.00 -6999 -6999
6 25 500 4 W - 277 9 45 92 30.12 0.00 -6999 -6999
6 25 400 2 W - 286 9 48 90 30.13 0.00 -6999 -6999
6 25 300 2 NW - 302 7 50 83 30.13 0.00 -6999 -6999
6 25 200 6 W - 282 9 49 84 30.14 0.00 -6999 -6999
6 25 100 2 NW - 310 7 50 85 30.15 0.00 -6999 -6999
6 24 2400 3 NW - 301 7 53 82 30.15 0.00 -6999 -6999
6 24 2300 3 NW - 299 8 55 71 30.14 0.00 -6999 -6999
6 24 2200 4 NW - 304 10 57 65 30.13 0.00 -6999 -6999
6 24 2100 4 N - 348 15 61 52 30.10 0.00 -6999 -6999
6 24 2000 2 NW - 309 6 65 40 30.08 0.00 -6999 -6999
6 24 1900 7 SW - 245 21 66 37 30.08 0.00 -6999 -6999
6 24 1800 4 W - 292 16 70 29 30.07 0.00 -6999 -6999
6 24 1700 4 NW - 333 15 68 37 30.08 0.01 -6999 -6999
6 24 1600 8 W - 249 18 71 27 30.09 0.00 -6999 -6999
6 24 1500 6 NW - 310 18 71 23 30.08 0.00 -6999 -6999
6 24 1400 6 NW - 323 20 70 23 30.10 0.00 -6999 -6999
6 24 1300 6 N - 341 15 70 26 30.11 0.00 -6999 -6999
6 24 1200 5 NW - 332 13 69 28 30.12 0.00 -6999 -6999
6 24 1100 4 NE - 65 13 68 38 30.12 0.00 -6999 -6999
6 24 1000 2 E - 90 5 62 54 30.13 0.00 -6999 -6999
6 24 900 1 NE - 62 5 57 63 30.14 0.00 -6999 -6999
6 24 800 0 NW - 327 3 51 73 30.14 0.00 -6999 -6999
6 24 700 2 NW - 301 8 48 74 30.14 0.00 -6999 -6999
.

American Spirit Station

The American Spirit site measures air temperture, relative humidity, and wind at an elevation of 8850 feet. In addition, the site measures incoming long and short wave radiation. Click here if data have not updated recently.

Jump to table bottom
Date Hour Avg Speed Avg Dir Max Gust Avg Temp Avg RH
6 25 700 5 NW - 304 10 49 65
6 25 600 4 W - 291 8 47 70
6 25 500 1 S - 187 4 45 81
6 25 400 2 SE - 138 6 46 80
6 25 300 4 SW - 218 8 46 81
6 25 200 2 SE - 155 5 46 83
6 25 100 5 SE - 130 10 47 79
6 24 2400 4 S - 163 10 49 74
6 24 2300 5 W - 262 10 51 64
6 24 2200 2 SW - 217 8 53 55
6 24 2100 8 N - 344 28 54 53
6 24 2000 5 W - 257 15 58 36
6 24 1900 14 SW - 233 30 57 40
6 24 1800 9 NW - 322 20 62 30
6 24 1700 13 NW - 321 27 60 39
6 24 1600 9 W - 259 33 62 29
6 24 1500 13 NW - 323 28 64 22
6 24 1400 15 NW - 330 29 63 21
6 24 1300 12 NW - 335 24 62 26
6 24 1200 11 NW - 329 22 60 29
6 24 1100 7 N - 352 22 60 34
6 24 1000 2 N - 360 8 59 40
6 24 900 2 NE - 46 7 55 51
6 24 800 7 NW - 295 10 52 53
6 24 700 2 NW - 297 5 53 37
.

Andesite Weather Station

The Andesite weather station is located on top of Andesite Mt at elevation 8850 ft. The site measures air temp, snow accumlations, and snow water content. Wind speed and direction are measured on tower 19 of the Meadow Lift. The 24 hr snow sensor is swept clear each day.

Click HERE if the data below hasn't updated.

Jump to table bottom
Date Hour Avg Speed Avg Dir Max Gust Avg Temp New Snow Total Snow
6 25 700 2 NW - 306 5 49 -6999 -6999
6 25 600 2 SW - 227 5 44 -6999 -6999
6 25 500 2 SE - 151 4 43 -6999 -6999
6 25 400 2 E - 100 4 44 -6999 -6999
6 25 300 2 S - 160 5 45 -6999 -6999
6 25 200 4 E - 111 9 45 -6999 -6999
6 25 100 5 E - 74 9 46 -6999 -6999
6 24 2400 4 SE - 143 7 48 -6999 -6999
6 24 2300 4 NW - 316 10 51 -6999 -6999
6 24 2200 5 N - 4 12 52 -6999 -6999
6 24 2100 8 NW - 327 27 53 -6999 -6999
6 24 2000 3 NW - 299 8 58 -6999 -6999
6 24 1900 6 SW - 216 17 59 -6999 -6999
6 24 1800 7 NW - 293 20 62 -6999 -6999
6 24 1700 6 W - 251 22 61 -6999 -6999
6 24 1600 8 SW - 231 20 64 -6999 -6999
6 24 1500 10 W - 270 24 66 -6999 -6999
6 24 1400 10 W - 272 21 65 -6999 -6999
6 24 1300 8 W - 272 16 65 -6999 -6999
6 24 1200 6 W - 260 18 64 -6999 -6999
6 24 1100 4 W - 265 13 61 -6999 -6999
6 24 1000 2 SW - 206 7 60 -6999 -6999
6 24 900 2 SE - 141 4 56 -6999 -6999
6 24 800 3 NW - 300 8 52 -6999 -6999
6 24 700 3 NW - 294 8 51 -6999 -6999
.

Timber Station

The Timberline Study Plot is located at elevation 9400 ft. The site provides measurements of air temp, relative humidity, snow accumlations, and snow water content. Wind speed and direction are measured at the top of the Pioneer Ridge (RIDGE, 9800 ft). The 24 hr snow sensor is swept clear each day. Click here if data have not updated recently.

Jump to table bottom
Date Hour Ridge Speed Ridge Dir Ridge Gust TW 26 Speed TW 26 Dir TW 26 Gust Avg Temp Avg RH H2O New Snow Total Snow
6 25 700 4 NW - 298 9 2 NW - 328 7 47 73 0.00 -6999 -6999
6 25 600 9 W - 276 14 6 NW - 298 11 44 73 0.00 -6999 -6999
6 25 500 3 N - 0 9 0 S - 159 4 43 79 0.00 -6999 -6999
6 25 400 2 W - 267 4 0 S - 166 5 43 87 0.00 -6999 -6999
6 25 300 4 W - 271 11 2 SW - 216 7 44 86 0.00 -6999 -6999
6 25 200 9 NE - 60 13 2 NE - 39 7 43 86 0.00 -6999 -6999
6 25 100 10 E - 72 15 3 E - 80 8 44 90 0.00 -6999 -6999
6 24 2400 6 S - 191 15 5 S - 185 12 46 86 0.00 -6999 -6999
6 24 2300 6 NW - 335 17 5 W - 264 14 48 83 0.00 -6999 -6999
6 24 2200 4 NE - 35 9 2 N - 11 9 50 63 0.00 -6999 -6999
6 24 2100 7 N - 353 27 7 NW - 322 23 52 58 0.00 -6999 -6999
6 24 2000 8 SW - 238 15 4 S - 199 9 56 41 0.00 -6999 -6999
6 24 1900 22 SW - 228 39 9 S - 194 30 57 44 0.00 -6999 -6999
6 24 1800 6 NW - 294 17 5 NW - 327 20 60 33 0.00 -6999 -6999
6 24 1700 7 NW - 302 19 10 N - 344 23 60 37 0.00 -6999 -6999
6 24 1600 14 SW - 246 27 7 S - 167 25 67 31 0.00 -6999 -6999
6 24 1500 9 W - 264 26 4 N - 19 15 67 24 0.00 -6999 -6999
6 24 1400 5 W - 269 20 5 N - 13 19 66 19 0.00 -6999 -6999
6 24 1300 5 NW - 303 19 5 N - 355 16 66 24 0.00 -6999 -6999
6 24 1200 5 NW - 296 17 5 N - 343 14 61 28 0.00 -6999 -6999
6 24 1100 3 NW - 322 13 4 N - 13 15 60 35 0.00 -6999 -6999
6 24 1000 1 W - 284 6 2 N - 9 7 61 33 0.00 -6999 -6999
6 24 900 1 NE - 49 5 0 SE - 156 4 56 36 0.00 -6999 -6999
6 24 800 7 W - 292 12 6 W - 291 13 50 49 0.00 -6999 -6999
6 24 700 5 W - 286 8 5 W - 290 8 49 47 0.00 -6999 -6999
.

Skier triggered and natural new snow avalanches in Beehive

Beehive Basin
Northern Madison
Code
SS-AS-R1-D1.5-I
Elevation
10000
Aspect
NE
Latitude
45.34070
Longitude
-111.39100
Notes

From obs: 5/9/21: "Yesterday we went to check out the new snow in Beehive Basin.... While traversing... along the north ridge of 10602, we triggered a small wind slab  that carried down into Peruvian, which then released another small wind slab on a northeast aspect of the face (photo). The crown height of this wind slab was measured at 60cm at it's deepest point, and approximately 30ft wide by 10ft long.

Looking down into the face of Peruvian, we observed a natural dry loose slide that released from the ridge. We observed an increase in wind speed throughout the morning, and a shift in wind direction from west to southwest in the early morning moving to west to north west by the late morning."

Number of slides
2
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Skier
R size
1
D size
1.5
Bed Surface
I - Interface between new and old snow
Problem Type
Wind-Drifted Snow
Slab Thickness
60.0 centimeters
Slab Width
30.00ft
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year

Loose dry release in Peruvian

From obs: 5/9/21: "Yesterday we went to check out the new snow in Beehive Basin... Looking down into the face of Peruvian, we observed a natural dry loose slide that released from the ridge... We observed an increase in wind speed throughout the morning, and a shift in wind direction from west to southwest in the early morning moving to west to north west by the late morning. The combination of variable and high winds with the amount of new snow available for transport created a noticeable increase in the hazard of wind slabs on all aspects we observed during the morning..." Photo: E.

Northern Madison, 2021-05-10

Crown of skier triggered wind slab

From obs: 5/9/21: "Yesterday... While traversing... along the north ridge of 10602 [near Beehive], we triggered a small wind slab  that carried down into Peruvian, which then released another small wind slab on a northeast aspect of the face (photo). The crown height of this wind slab was measured at 60cm at it's deepest point, and approximately 30ft wide by 10ft long. Looking down into the face of Peruvian, we observed a natural dry loose slide that released from the ridge.

Northern Madison, 2021-05-10

Debris from skier triggered wind slab in Beehive

From obs: 5/9/21: "Yesterday... While traversing... along the north ridge of 10602 [in Beehive], we triggered a small wind slab  that carried down into Peruvian, which then released another small wind slab on a northeast aspect of the face (photo). The crown height of this wind slab was measured at 60cm at it's deepest point, and approximately 30ft wide by 10ft long. Looking down into the face of Peruvian, we observed a natural dry loose slide that released from the ridge.

Northern Madison, 2021-05-10

ECT after shear, moist/wet snowpack

From obs 5/9//21: "Yesterday we went to check out the new snow in Beehive Basin. We dug a pit on the south face of Peak 10602, and conducted an ECT with results ECTN8@20, ECTN11@30, and ECTN25@60. The new snow total in this location was 30cm. Although we saw no propagation, a hand shear test (photo) and a shear conducted on the remaining ECT block (photo) resulted in a Q1 shear at the interface at the bottom of the new snow.

Northern Madison, 2021-05-10

Wet snow slides, natural and skier triggered

Taylor Fork
Southern Madison
Code
WS-N-R2-D2-O
Elevation
9500
Aspect
NW
Latitude
45.06070
Longitude
-111.27200
Notes

Multiple wet slides were reported in southern Madison and Tobacco Roots over the week 5/3-5/7.

Number caught
0
Number buried
0
Avalanche Type
Wet slab avalanche
Trigger
Natural trigger
R size
2
D size
2
Bed Surface
O - Old snow
Problem Type
Wet Snow
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year