After reading about other members experiences with this year's mild winter (i.e. Tahoe Rim Trail in January) I was wondering if it would be possible to complete a John Muir thru hike in late April- early May. I live on the East Coast so I'm not too familiar with what the weather and snow pack has been like out west but if anyone who has been out in the Sierras lately could give me a gage of what a trip that early in the season would entail I would be very appreciative.

Edited by jdillon3 on 02/01/2012 19:47:23 MST.

I have never hiked the whole JMT, end to end, so I am certainly no expert.

Without knowing what kind of cross country skis you intend to use, it is difficult to say much about late April.

Personally, I would not think about trying to hike the JMT before June. This year is still up in the air. It looks like the trails may open up early, but not as early as April.

--B.G.--

Our currently mild winter doesn't mean much in terms of planning, especially since you are talking 2 months from now. We tend to get the most snow in February and sometimes just as much in March. There could easily be a few big storms that dump snow and make the areas inaccessible until June, however the deep snow in mountain passes probably won't last as long into the summer.

Regardless, it would be a winter snow trip. Just because most of the Sierras are dry does not mean the high sierras are dry. The high mountain passes have had snow since November, and the John Muir trail goes through some of the highest places in the Sierra.

There is already plenty of snow in the high sierras, just not as much "snow pack" as normal in the very high mountains which causes potential for low water supply.

Unless you are fully prepared for anything that the Sierra could throw at you including avalaches etc you should probably find another option. Just because it's been a low snow year SO FAR means nothing if you get out there and get FEET of fresh snow dumped on you. And regardless of the snow level you will have nearly 100% coverage on the JMT. Plus there are no resupply options other than Mammoth and that is not actually easy. I have done several weekend trips into this area in April but only when the weather outlook is good and avalanche danger low. But frankly I'm not sure how quickly I would do some of those trip again after seeing the avalanche destruction in areas that I would have never guessed would be particularly danger such as Rae Lakes when I hiked through the Sierra last June.

I've skied one section (Evolution) of the JMT in April of a normal snow year. So, I would not recommend that for a hiker unless they were a real glutton for punishment.

--B.G.--

"I was wondering if it would be possible to complete a John Muir thru hike in late April- early May."

The article by Kevin Sawchuk pointed to by the link below will give you an excellent idea of what you could reasonably expect to encounter on such a trip. Bear in mind that Kevin is an extremely experienced backcountry skier and also extremely fit.

https://www.backpackinglight.com/cgi-bin/backpackinglight/skiing_the_john_muir_trail.html

The Donner Party made it out in March with only a few casualties and hardships. I'd give it another 60 days, check the snow levels and that way you don't need to eat your family members.

If late April is your timeframe, southern Utah and the desert Southwest in general are superb right around then.

Without trying to be rude, it's funny how many "can I go to the Sierras in the spring" and "I'm going to Grand Canyon in July" posts I see at various backpacking sites. The remote American west is unforgiving; you want to go when conditions are good, and for each ecoregion there is a very specific window. Desert southwest in March-May and Sierras in July-September. Even in a year with very little snow, I personally wouldn't do the JMT any earlier than June 15 or July 1; the HIGH passes are going to have snow no matter what.

- Elizabeth

But for those that aren't familiar with each ecoregion and their very specific windows, it seems like asking the question is the logical thing to do. I'm not sure what's so funny about it.

"it seems like asking the question is the logical thing to do. I'm not sure what's so funny about it."

Nothing funny about it at all, Chris. Ignore those who condescend and ask whatever question you want. That's part of what this community is about. I think most of the replies so far have attempted to address your question with solid advice, probably enough for you to make an informed decision. Good luck with whatever you decide to do.

Edit: I should have addressed it to John, the OP, but I think the message is clear and applies generally.

Edited by ouzel on 02/02/2012 17:17:59 MST.

I think if you wanted to take a stab at it in that time frame this is shaping up to be the ideal year to do it. I agree with what has been previously said, that they could get 100% (or more) of their normal snowfall for the rest of the winter. I don't think you'd have to worry about avalanche danger with wetter spring snow and warmer, longer days but I would be prepared to deal with the snow. Keep an eye on the snow reports and decide accordingly -- I just heard today that its 26% of normal snow pack.

Some guys from Oregon came out and did CT stretches--if not all--in May. I only saw their sporadic condition reports and log entries. CO had a May 1 snowpack of 200% state wide.

Late April/early may is the prime backcountry skiing window. Hiking - not so much. It is vaguely possible that this year will be so abnormal that you could do a god portion of the trail at that point, BUT: the high passes will still be mountaineering, not hiking. Now late May is another story, but you'd still want to plan for some steep . icy snow on Mather, Forester and Glen passes at least - and that's if it does turn out to be a REALLY low snowpack by then. And the possibiity of serious storms is still there for late May even, although not as much as late april/Early May.

Here's a shot from a ski trip in late April of 2007 - the lowest snowpack in recent years, I think around 50% of normal - in the Emigrant Wilderess, which is north of Yosemite. This is about 9600 feet elevation.


Oh - and at the end of that week we finished off the trip with a blizzard and whiteout conditions, on May 2nd.

Edited by paul on 02/02/2012 18:09:18 MST.

Thanks for the info, it was exactly what I was looking for. I didn't want to show up in Yosemite with my 3-season gear only to to be trudging through three feet of snow. I think I will stay back east and take on the Tuscarora trail and save the JMT for another year.

Edited by jdillon3 on 02/07/2012 20:50:01 MST.

If you can....you wont regret it!!!

I found this thread because I was looking for the same info. I'm from the East Coast and will be in CA in late april. Wanted to do a several-day hike starting in Seven Pines, going west on Sierra High Route, south on JMT, then through Mt. Whitney downto Whitney Portal trailhead.

My friends and I climbed Mt. Whitney in late April 2009 via the Mountaineers Route, and it was fine. We didn't have skis or even snow shoes, only crampons and ice axes for the last, steep stretch. There was only minor postholing between lower and upper Boyscout lakes, and firm footing everywhere else.

Could anyone please be more specific about the dangers of this hike (which I want to do only if the snow remains at these record-low levels through April).

Thanks!

And forgot to ask: do you guys know a good source of snow pack data? I found a bunch of info on the NOAA site, but it's hard to make sense of.
Thanks,
RM

If you've been up the Mountaineer's Route on Whitney, then you likely have the mountaineering skills and gear to deal with what you might find on the HST in late April. However, I wouldn't equate conditions on Whitney with conditions elsewhere in the range. When you climb Whitney from the east side, you're climbing it from the drier side - so less snow usually. So, if you do plan to go, be prepared for more snow than you are thinking you'll see. I would still expect that snowshoes or skis would be faster than postholing, unless we end up with an extremely low snow year. You'd likely want those crampons and axe along for the passes. And kep in mind that sizable storms can and do happen in late april, so be prepared to get a foot or two of snow dropped on you and on the trail.

You also need to have plenty of off-trail experience, so that you can be confident that you can navigate if the trail is completely covered by snow, which it may be even if it is only a couple feet of snow.

The other thing to be aware of, and this is the real danger, is creek crossings. In late April they can be deadly. Deep and fast.

Snowpack info - here is the place: http://cdec.water.ca.gov/snow/current/snow/

both real-time sensors and hand measurements (once monthly) are available. The sensors closest to your route look like Chagoopa Plateau and Upper Tyndall Creek.

"The other thing to be aware of, and this is the real danger, is creek crossings. In late April they can be deadly. Deep and fast."

+1 You'll need to watch your step crossing Wallace Creek down in Kern Canyon and once you're on the JMT. However, the potentially most problematic of all is Wright Creek where it crosses the HST about half way up to the JMT from Junction Meadow. It flows out of a very narrow slot in the canyon wall on the upstream side and, when running high, can shoot across the trail, making a crossing extremely difficult/dangerous. There is no good option on the downstream side of the trail to avoid this.

"There is no good option on the downstream side of the trail to avoid this."

Tom, what about upstream?

--B.G.--

"Tom, what about upstream?"

It's a near vertical wall, Bob. No good options there, either. In early season when the streams are running high, Whitney, Wallace, Tyndall, Wright and the Kern can all be difficult to cross, but at least with all but Wright you have the option of looking up or down stream for better places. That is not the case with Wright Creek going up the HST from Kern Canyon. If you had to retreat, your only options would be to move upstream and take your chances with Tyndall, or head downstream and bushwhack up Whitney Creek out of the Kern Canyon. I've been down that route 3 times, and it is really steep. I wouldn't want to try ascending it, especially when I'd still have to get across the creek just after reaching the rim of the canyon, with the possibility of success unknown.