Station Overview Station Location
Station Number WY-TT-21 Latitude 43.430068
Station Name Jackson 3.5 SSW Longitude -110.797619
County Teton Elevation (ft) 6075



Month 30 Yr Avg by PRISM Total Prcp Sum Days Covered By All Observations Daily Prcp Sum Daily Observation Count Multiday Prcp Sum Days Covered by Multiday Observations Multiday Observation Count Days With Prcp Days With Trace Total Snowfall Days With Snowfall Days With Snow On Ground
Oct 15 1.20 1.70 13 1.70 13 0.00 0 0 13 0 0.0 0 0
Nov 15 1.99 1.31 8 1.31 8 0.00 0 0 8 0 7.2 5 5
Dec 15 2.03 1.91 14 1.91 14 0.00 0 0 13 0 10.6 3 3
Jan 16 2.12 1.06 10 0.96 8 0.10 2 1 8 0 6.8 5 1
Feb 16 1.68 0.43 5 0.43 5 0.00 0 0 4 1 0.8 1 0
March 16 1.82 1.74 11 1.74 11 0.00 0 0 11 0 13.8 7 7
April 16 1.62 0.87 8 0.46 6 0.41 2 1 6 0 0.5 1 0
May 16 1.85 1.47 11 0.79 3 0.68 8 3 3 0 0.0 0 0
June 16 1.52 0.33 18 0.16 14 0.17 4 1 3 0 0.0 0 0
July 16 0.92 0.33 2 0.33 2 0.00 0 0 2 0 0.0 0 0
Aug 16 0.94 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 16 1.15 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 18.84" 11.15" 100 days 9.79" 84 1.36" 16 days 6 71 days 1 days 39.7" 22 days 16 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2015
10/2/2015 0.43
10/3/2015 0.54
10/4/2015 0.04
10/5/2015
10/6/2015
10/7/2015 0.09
10/8/2015
10/9/2015
10/10/2015
10/11/2015
10/12/2015
10/13/2015
10/14/2015
10/15/2015
10/16/2015
10/17/2015
10/18/2015 0.02
10/19/2015 0.01
10/20/2015 0.31
10/21/2015
10/22/2015
10/23/2015
10/24/2015 0.01
10/25/2015 0.01
10/26/2015 0.01
10/27/2015 0.18
10/28/2015
10/29/2015 0.01
10/30/2015
10/31/2015 0.04
11/1/2015
11/2/2015 0.42
11/3/2015
11/4/2015 0.12
11/5/2015
11/6/2015 0.05
11/7/2015
11/8/2015
11/9/2015
11/10/2015
11/11/2015
11/12/2015 0.03
11/13/2015 0.02
11/14/2015
11/15/2015
11/16/2015
11/17/2015
11/18/2015 0.08
11/19/2015
11/20/2015 0.33
11/21/2015
11/22/2015
11/23/2015
11/24/2015
11/25/2015
11/26/2015 0.26
11/27/2015
11/28/2015
11/29/2015
11/30/2015
12/1/2015
12/2/2015
12/3/2015
12/4/2015
12/5/2015 0.05
12/6/2015
12/7/2015
12/8/2015 0.24
12/9/2015 0.04
12/10/2015 0.12
12/11/2015 0.16
12/12/2015
12/13/2015
12/14/2015 M
12/15/2015
12/16/2015 0.00
12/17/2015 0.35
12/18/2015
12/19/2015
12/20/2015 0.05
12/21/2015 0.05
12/22/2015 0.41
12/23/2015 0.19
12/24/2015 0.19
12/25/2015 0.02
12/26/2015
12/27/2015
12/28/2015
12/29/2015
12/30/2015 0.04
12/31/2015
Day of YearDaily PrcpMultiday Prcp
1/1/2016
1/2/2016
1/3/2016
1/4/2016
1/5/2016 **
1/6/2016 0.10
1/7/2016 0.10
1/8/2016
1/9/2016 0.01
1/10/2016
1/11/2016
1/12/2016
1/13/2016
1/14/2016 0.04
1/15/2016
1/16/2016
1/17/2016
1/18/2016 0.22
1/19/2016
1/20/2016 0.14
1/21/2016
1/22/2016
1/23/2016
1/24/2016
1/25/2016
1/26/2016
1/27/2016
1/28/2016
1/29/2016 0.03
1/30/2016 0.12
1/31/2016 0.30
2/1/2016 0.12
2/2/2016 0.05
2/3/2016
2/4/2016 T
2/5/2016
2/6/2016
2/7/2016
2/8/2016
2/9/2016
2/10/2016
2/11/2016
2/12/2016
2/13/2016
2/14/2016
2/15/2016
2/16/2016
2/17/2016
2/18/2016
2/19/2016 0.23
2/20/2016
2/21/2016
2/22/2016 0.03
2/23/2016
2/24/2016
2/25/2016
2/26/2016
2/27/2016
2/28/2016
2/29/2016
3/1/2016
3/2/2016 0.09
3/3/2016
3/4/2016
3/5/2016
3/6/2016
3/7/2016 0.19
3/8/2016
3/9/2016 0.08
3/10/2016
3/11/2016
3/12/2016
3/13/2016
3/14/2016 0.33
3/15/2016 0.20
3/16/2016 0.23
3/17/2016 0.11
3/18/2016
3/19/2016
3/20/2016
3/21/2016
3/22/2016 0.21
3/23/2016 0.01
3/24/2016
3/25/2016 0.11
3/26/2016
3/27/2016
3/28/2016 0.18
3/29/2016
3/30/2016
3/31/2016
Day of YearDaily PrcpMultiday Prcp
4/1/2016 0.07
4/2/2016
4/3/2016
4/4/2016
4/5/2016
4/6/2016
4/7/2016
4/8/2016
4/9/2016
4/10/2016
4/11/2016 0.12
4/12/2016
4/13/2016
4/14/2016
4/15/2016 **
4/16/2016 0.41
4/17/2016
4/18/2016
4/19/2016
4/20/2016
4/21/2016
4/22/2016
4/23/2016
4/24/2016 0.12
4/25/2016
4/26/2016 0.09
4/27/2016
4/28/2016
4/29/2016 0.03
4/30/2016 0.03
5/1/2016
5/2/2016
5/3/2016
5/4/2016
5/5/2016
5/6/2016
5/7/2016 0.36
5/8/2016
5/9/2016 0.22
5/10/2016
5/11/2016
5/12/2016
5/13/2016
5/14/2016
5/15/2016 **
5/16/2016 0.12
5/17/2016
5/18/2016
5/19/2016
5/20/2016 0.21
5/21/2016 **
5/22/2016 **
5/23/2016 0.29
5/24/2016 **
5/25/2016 **
5/26/2016 0.27
5/27/2016
5/28/2016
5/29/2016
5/30/2016
5/31/2016
6/1/2016 0.00
6/2/2016 0.00
6/3/2016 0.00
6/4/2016 0.00
6/5/2016 0.00
6/6/2016 0.00
6/7/2016 0.02
6/8/2016 0.02
6/9/2016 0.12
6/10/2016 0.00
6/11/2016 0.00
6/12/2016 0.00
6/13/2016 0.00
6/14/2016 **
6/15/2016 **
6/16/2016 **
6/17/2016 0.17
6/18/2016 0.00
6/19/2016
6/20/2016
6/21/2016
6/22/2016
6/23/2016
6/24/2016
6/25/2016
6/26/2016
6/27/2016
6/28/2016
6/29/2016
6/30/2016
Day of YearDaily PrcpMultiday Prcp
7/1/2016 0.09
7/2/2016
7/3/2016
7/4/2016
7/5/2016
7/6/2016
7/7/2016
7/8/2016
7/9/2016
7/10/2016
7/11/2016 0.24
7/12/2016
7/13/2016
7/14/2016
7/15/2016
7/16/2016
7/17/2016
7/18/2016
7/19/2016
7/20/2016
7/21/2016
7/22/2016
7/23/2016
7/24/2016
7/25/2016
7/26/2016
7/27/2016
7/28/2016
7/29/2016
7/30/2016
7/31/2016
8/1/2016
8/2/2016
8/3/2016
8/4/2016
8/5/2016
8/6/2016
8/7/2016
8/8/2016
8/9/2016
8/10/2016
8/11/2016
8/12/2016
8/13/2016
8/14/2016
8/15/2016
8/16/2016
8/17/2016
8/18/2016
8/19/2016
8/20/2016
8/21/2016
8/22/2016
8/23/2016
8/24/2016
8/25/2016
8/26/2016
8/27/2016
8/28/2016
8/29/2016
8/30/2016
8/31/2016
9/1/2016
9/2/2016
9/3/2016
9/4/2016
9/5/2016
9/6/2016
9/7/2016
9/8/2016
9/9/2016
9/10/2016
9/11/2016
9/12/2016
9/13/2016
9/14/2016
9/15/2016
9/16/2016
9/17/2016
9/18/2016
9/19/2016
9/20/2016
9/21/2016
9/22/2016
9/23/2016
9/24/2016
9/25/2016
9/26/2016
9/27/2016
9/28/2016
9/29/2016
9/30/2016



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/2/2015 7:53 AM 0.43 M M M M precip began as thunderstorms rolling in over western and southern mts around 11 pm. Included some of the longest thundering heard in these parts in last 30 years--up to 30 seconds! flashes of sheet lightning to west and south. rain throughout the night, another storm came through Rafter J and Jackson between 0730 and 0800. currently 100% overcast with upper half of mts mainly concealed, but hiding new snow.
10/3/2015 8:00 AM 0.54 M M M M rained most of the day yesterday, most of day had low visibility in valley, and mountains were largely out of sight this morning, 100% overcast, cool, but not raining.
10/4/2015 8:00 AM 0.04 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
10/7/2015 8:00 AM 0.09 M M M M foggy again this morning, all mountains (including Munger) hidden, but not raining currently.
10/18/2015 8:00 AM 0.02 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
10/19/2015 8:00 AM 0.01 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
10/20/2015 8:00 AM 0.31 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
10/24/2015 8:00 AM 0.01 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
10/25/2015 8:00 AM 0.01 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
10/26/2015 8:00 AM 0.01 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
10/27/2015 8:42 AM 0.18 M M M M Has been snowing in this location (valley floor) for about a half-hour, pelletized snow enough to partly cover our deck, railings. fresh snow visible on surrounding mountaintops, including Munger and Snow King. had to melt the ice in tube this morning to measure, but heard it raining a couple of times last night before and after midnight. was 34 this morning at 6:30.
10/29/2015 8:28 AM 0.01 M M M M FIRST MEASURABLE SNOW of the season! Only .01 but still lightly snowing and all surrounding mountains, including Munger, are completely hidden in clouds.
10/31/2015 9:16 AM 0.04 M M M M cold mix of icy snow/rain lightly falling, completely overcast, brisk wind pushing straight sideways from southeast. lots of fresh snow visible on surrounding mts, including light cover on most of Munger and very tops of Gros Ventre range to the east.
11/2/2015 8:00 AM 0.42 M M M M overcast, cold light breeze from se, light rain falling, lot of new snow on mts, from top 1/4 of Munger up.
11/4/2015 8:00 AM 0.12 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
11/6/2015 7:29 AM 0.05 1.5 0.05 1.5 0.05 First significant (measureable) snowfall of the season. light snow began falling early in the evening but had less than 1/4" accumulation by midnight, so all snow fell between then and 0515 when we awakened. partly cloudy and calm currently with no precipitation occurring, none apparently coming.
11/12/2015 8:00 AM 0.03 0.3 0.03 0.3 0.03 All previous ground accumulation had melted, so new snow was also total snow.
11/13/2015 8:00 AM 0.02 M M M M Precipitation fell yesterday morning after sampling as snow flurries that melted.
11/18/2015 7:30 AM 0.08 0.4 0.08 0.4 0.08 snow was largely pellet in nature. overnight, temps rose from around 25 at 11 to 31-32F at 0630 as high-pressure system came in, accompanied by VERY strong gusts of wind around 0200--strong enough to shake two-story home several times, waking us up! light flurries continuing, now covering lawns and decks in Valley. (At 0430, was snowing lightly but ground was not yet covered.)
11/20/2015 8:00 AM 0.33 2.5 0.20 3.0 0.33 skies clear, calm, new snow is crusty from higher temps late yesterday when precipitation was rain/snow mix.
11/26/2015 8:00 AM 0.26 2.5 0.37 3.0 0.39 100% overcast, brisk wind from N--had constant wind with fairly strong gusts all night long (after 1800). Drifts up to 10"-makes accurate tube reading almost impossible, so all entries below are guestimates.
12/5/2015 8:00 AM 0.05 M M M M very light pebbly snow falling last night after 9 pm --to little to measure in tube before adding hot water to get new precip data.
12/8/2015 8:00 AM 0.24 M 0.24 M M
12/9/2015 8:00 AM 0.04 M 0.04 M M Light rain from 12/08 and warming temps (up to low-40s) causing major loss of snow, puddling of water on walking paths.
12/10/2015 8:00 AM 0.12 M M M M no snow in tube--all ice! had .4" on ground and deck, all of which fell between 2100 and 2300 last night--no snow afterwards. snow was very crusty throughout, indicating temps at or above freezing, and falling snow was largely pelletized.
12/11/2015 8:00 AM 0.16 1.8 0.16 2.0 0.15 Ground total estimated due to uneven cover--wind blowing snow all night, leaving areas over and under average.
12/14/2015 8:00 AM M M M M M 8" in tube, 6.5" on ground, .37 precip. on ground, .41 in tube.
12/16/2015 8:00 AM 0.00 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
12/17/2015 8:00 AM 0.35 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
12/20/2015 8:00 AM 0.05 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
12/21/2015 8:00 AM 0.05 M M M M stiff breeze from se making it seem much colder than 27F shown. light snow falling, skies 100% overcast.
12/22/2015 8:00 AM 0.41 6.5 0.39 6.5 0.37 Distortion of actual amounts due to strong wind from SE that caused drifting in yard, on board, and within 4" tube, so accumulation figures slanted, precip figures actual but based on accumulation estimates.
12/23/2015 8:00 AM 0.19 2.3 0.14 8.5 0.89 Completely overcast, light snow. Ground depth had to be averaged due to drifting--in some places 15"--same for snowboard, with moderate wind last night and this morning.
12/24/2015 7:37 AM 0.19 M M M M 1.6 inches of new snow in tube, .19 precip. Currently 100% overcast, very lightly snowing.
12/25/2015 8:00 AM 0.02 M M M M 100% overcast, 14 degrees, not snowing, new snow .5 inch.
12/30/2015 8:00 AM 0.04 M M M M .7 snow in tube and on board, melted to .04. light overcast but no wind, not snowing. all new snow fell after midnight, was still lightly snowing at 0700, when temp was 0.8 F. first new snow since previous reported storm.
1/7/2016 8:00 AM 0.10 1.9 0.10 10.5 M Losing snow quickly, and snow/ice on sloped metal roofs is falling off, after hanging over edge and creating big danger. Play it safe--knock it down before the whole thing falls at once!
1/9/2016 8:00 AM 0.01 0.2 0.01 M M
1/14/2016 8:00 AM 0.04 0.7 0.04 M M 100% overcast but no sign of falling snow.
1/18/2016 8:00 AM 0.22 2.0 0.22 M M new snow over past two days.
1/20/2016 8:00 AM 0.14 2.0 0.14 M M Submitted via CoCoRaHS Observer for Android version 1.1.13
1/29/2016 8:00 AM 0.03 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
1/30/2016 6:25 AM 0.12 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
1/31/2016 8:00 AM 0.30 M M M M
2/1/2016 8:00 AM 0.12 M M M M
2/2/2016 8:00 AM 0.05 M M M M
2/4/2016 8:00 AM T M M M M
2/19/2016 8:00 AM 0.23 M M M M rain and snow mix yesterday, snow overnight
2/22/2016 8:00 AM 0.03 0.8 0.03 M M ground accum estimate almost impossible due to repeated melting, thawing, drifting, compression differences throughout yard!
3/2/2016 8:00 AM 0.09 M M M M above-freezing temps causing dramatic loss of Snow pack in yards--now about 50% coverage with snow depths no more than six inches.
3/7/2016 8:00 AM 0.19 M M M M pelletized snow fell overnight but had mainly melted in tube prior to collection. (some thin snow cover on deck but quickly melted.)
3/9/2016 8:00 AM 0.08 1.0 0.08 1.0 0.08 temperature remained at 29 degrees overnight and flakey snow seems to have occurred after daylight, before 0800 sampling.
3/14/2016 6:53 AM 0.33 M M M M ground white with about 1/4" of Snow, temps remained just above freezing overnight so tube had nothing but liquid water.
3/15/2016 8:00 AM 0.20 2.0 0.20 2.5 M some snow in first hour after 3/14 sampling, but almost all fell between 1900 and 2100--so heavy at times that vehicles on S. Hwy 89 south of Jackson had difficulty trying to see even at 20 mph.
3/16/2016 8:00 AM 0.23 4.0 0.23 4.5 0.24 snow fell almost constantly 3/15 morning, afternoon, night, was still lightly falling this a.m., with temps in low 20s, light or no breeze, 100% overcast, limited visibility on ski mts.
3/17/2016 8:00 AM 0.11 2.0 0.11 5.0 M Submitted via CoCoRaHS Observer for Android version 1.1.13
3/22/2016 8:00 AM 0.21 1.5 0.21 1.5 0.21 wet snow overnight.
3/23/2016 8:00 AM 0.01 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
3/25/2016 8:00 AM 0.11 1.0 0.11 1.0 0.11 Submitted via CoCoRaHS Observer for Android version 1.1.13
3/28/2016 8:00 AM 0.18 2.3 0.18 2.3 0.18 Submitted via CoCoRaHS Observer for Android version 1.1.13
4/1/2016 8:00 AM 0.07 0.5 0.03 M M no snow at 0600, 2.0" by 0830, all melted, had .25" sleet and rain blowing hard at angle for about 15 minutes around 1030, then rain, cleared in afternoon with sunshine.
4/11/2016 8:00 AM 0.12 M M M M rain that has fallen over past TWO days.
4/24/2016 8:00 AM 0.12 M M M M
4/26/2016 6:30 AM 0.09 M M M M cold wind this a.m., 100 per cent overcast.
4/29/2016 8:00 AM 0.03 M M M M Had dusting of snow on decks, roofs, cars this morning, but quickly melted. Same applied to all surrounding mountains. Skies continued to be overcast
4/30/2016 8:00 AM 0.03 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
5/7/2016 8:00 AM 0.36 M M M M 100% overcast, rain yesterday afternoon, pre2300, after midnight, but had stopped before 0600 today.
5/9/2016 8:00 AM 0.22 M M M M skies clearing.
5/20/2016 8:00 AM 0.21 M M M M some before 8 a.m., some after. 100% overcast, but not raining at 2011 hours.
6/1/2016 8:00 AM 0.00 0.0 M M M
6/2/2016 8:00 AM 0.00 0.0 M M M
6/3/2016 8:00 AM 0.00 0.0 M M M
6/4/2016 8:00 AM 0.00 0.0 M M M
6/5/2016 8:00 AM 0.00 0.0 M M M
6/6/2016 8:00 AM 0.00 0.0 M M M
6/7/2016 8:00 AM 0.02 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
6/8/2016 8:00 AM 0.02 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
6/9/2016 8:00 AM 0.12 M M M M spectacular bolt and sheet lightning storm rolled over the Tetons at about 0340, lasted around a half-hour (fell back asleep), woke us up and scared our young dog. skies still partly cloudy, but calm and cool.
6/10/2016 8:00 AM 0.00 0.0 M M M
6/11/2016 8:00 AM 0.00 0.0 M M M
6/12/2016 8:00 AM 0.00 0.0 M M M
6/13/2016 8:00 AM 0.00 0.0 M M M
6/18/2016 8:00 AM 0.00 0.0 M M M
7/1/2016 8:00 AM 0.09 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13
7/11/2016 8:00 AM 0.24 M M M M Submitted via CoCoRaHS Observer for Android version 1.1.13



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
1/5/2016 1/06/2016 8:00 AM 2 0.10 11.0 1.90
4/15/2016 4/16/2016 8:00 AM 2 0.41 0.0 0.00 Precipitation past two days mainly rain that fell at several times on 4/14. Twice on 4/15 had brief period of snow (during sunshine) and very brief period--two or three minutes--of 1/8-inch sleet around 1640 on 4/15 (not enough to whiten deck).
5/15/2016 5/16/2016 9:15 AM 2 0.12 M M
5/21/2016 5/23/2016 1:00 PM 3 0.29 M M Weird couple of days, with intermittent periods of rain, sunshine--even a couple of minutes of pellet-like snow (not quite sleet). Finally decided to empty, during lull in precipitation.
5/24/2016 5/26/2016 8:00 AM 3 0.27 M M
6/14/2016 6/17/2016 8:00 AM 4 0.17 M M Includes brief (five-minute) period of 1/8th inch hail during afternoon shower on 6/15 and lightning storm during the early morning (0300) of 6/14-6/15.



Observation Date Observation Time Notes Largest Stone Size Average Stone Size Smallest Stone Size Stone Consistency Duration Minutes Durration Accuracy Damage Timing More Rain than Hail Hail Started Largest Hail Started Angle of Impact Number of Stones on Pad Distance Between Stones on Pad Depth of Stones on Ground