2019 Mosquito Reports

Questions and reports related to Sierra Nevada current and forecast conditions, as well as general precautions and safety information. Trail conditions, fire/smoke reports, mosquito reports, weather and snow conditions, stream crossing information, and more.
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2019 Mosquito Reports

Post by ERIC » Tue Mar 12, 2019 5:58 pm

mossy (2).jpg
This was @maverick's idea (thanks mav!), just re-posting from previous years.

1 - No mosquitoes or if there are some, but not biting yet
2 - Very light during the day, moderate at dawn and dusk
3 - Moderate during the day, heavy at dawn and dusk
4 - Heavy during the day, heavy at dawn and dusk
5 - Unbearable all day, no breaks, cannot eat outside of tent. If you stop, hundreds
will descend on you; when looking thru a camera viewfinder, you see more skeeters than
lake. If you slapped your arm, you'd smear blood from all the dead gorged bodies

Please do not post questions or ask about a particular area in this thread. Also, include where you went, with dates included, in the "Subject" box. Thanks
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Re: 2019 Mosquito Reports

Post by JayOtheMountains » Mon Apr 01, 2019 12:02 pm

Middle Fork Trail in SEKI.

Level 1

Visitor center volunteer did mention ticks, but we didn't encounter any.

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Alabama Hills 3/30-4/3

Post by wreynier » Fri Apr 05, 2019 1:43 pm

3/30-4/3/19, Alabama Hills, Eastern Sierra: 2

Pesky enough at dusk we busted out the bug spray

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Hetch Hetchy 6/6-6/9

Post by kpeter » Sun Jun 09, 2019 6:40 pm

June 6-9 Hetchy Hetchy to Vernon out and back:
Almost no mosquitoes except at the ranger station on the way in. However, the mullen was sprouting in Beehive and mosquitoes are usually not far behind. Probably another week or maybe two of ideal conditions.

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Yosemite Valley 6/4-6/9

Post by Wandering Daisy » Sun Jun 09, 2019 7:05 pm

June 4-9, Yosemite - never many while walking at any location
backpacker's campground, a few at dusk, but there was a nice breeze so may be more if calm
Yosemite Valley, along trails and near the rivers- none mid-day (I was not out at dusk)
LYV campground-1-2, pesky enough at dusk that people were using bug spray; I just had long pants and shirt (bug-off brand).
JMT - cross trail to Merced Lake trail- along Merced to LYV- none, except in the "swamps" down in the upper LYV
Pohono Trail- none, but I camped away from water in a good breeze

Basically no problem, but they are starting to hatch. Plenty of standing water, but I think the nights have been too cold.
Not many of those in-the-face gnats either.

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Horseshoe Meadows 6/13-6/14

Post by Pearl » Sat Jun 15, 2019 5:42 pm

June 13-14 Horseshoe Meadow - Trail Pass - Mulkey Pass - 2

In the late afternoon I got bit a bunch of times thru my merino wool shirt. Put on a windshirt and they couldn't bite thru that so then they just bit the backs of my hands. I sprayed Picardin under the brim of my baseball cap and that kept them from buzzing my face. Horseshoe Meadow is very wet. Lots of snow melt.

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LYV 6/23-6/24

Post by davidsheridan » Tue Jun 25, 2019 12:22 pm

June 23 -24 Little Yosemite Valley Backpackers Camp - 2 - Very light during the day, moderate at dawn and dusk

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Kibbie Lake 6/21-6/24

Post by tomba » Thu Jun 27, 2019 8:31 pm

Above Kibbie Lake 6/21-6/24

Route: Trailhead near Lake Eleanor, Kibbie Lake (in NW Yosemite), Bartlett Creek, Little Bear Lake, ridge above Inferno Lakes, follow the ridge above Cherry Creek to Boundary Lake, swing above Many Island Lake, Kibbie Ridge trail back.

Mosquitoes didn't bother us most of the time, except as follows:

Light mosquitoes in the evening NE from Kibbie Lake, at about 6800 ft.

Some mosquitoes when we waded the Kibbie Ridge Trail near flooded meadow north from Lookout Point.

The rest of the time - no mosquitoes.
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Location and Dates Here

Post by maverick » Fri Jun 28, 2019 12:16 pm

Please put the location and date of your trips in the "Subject" tab, it helps other members quickly locate the areas they are interested in visiting, and saves me the time from having to update them. :) Thanks
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I don't give out specific route information, my belief is that it takes away from the whole adventure spirit of a trip, if you need every inch planned out, you'll have to get that from someone else.

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Pine Creek-Bear Lakes Basin, 7/2-6/2019

Post by Harlen » Sun Jun 30, 2019 12:28 pm

Does anyone have any mosquito reports, or knowledge to pass on for the coming week? We will be hiking in via Pine Creek, perhaps camping one or two nights in the 10,000' elevation, and after that into Bear Lakes Basin, usually above 11,200. If the mossies are out, we won't take the tarp tent. Thanks, the Harlens.

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