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.
Post Reply
User avatar
Your Humble Host & Forums Administrator
Your Humble Host & Forums Administrator
Posts: 3142
Joined: Fri Oct 28, 2005 9:13 am
Experience: Level 4 Explorer
Location: between the 916 and 661

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
You do not have the required permissions to view the files attached to this post.

New members, please consider giving us an intro!
Follow us on Twitter @HighSierraTopix. Use hashtags #SIERRAPHILE #GotSierra? #GotMountains?
Follow us on Facebook: https://www.facebook.com/HighSierraTopix

User avatar
Topix Acquainted
Posts: 20
Joined: Thu Aug 21, 2014 3:09 pm
Experience: Level 4 Explorer
Location: San Diego, CA

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.

User avatar
Topix Novice
Posts: 13
Joined: Wed Aug 16, 2017 7:34 pm
Experience: Level 3 Backpacker

Re: 2019 Mosquito Reports

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

User avatar
Topix Expert
Posts: 860
Joined: Mon Jan 04, 2010 1:11 pm
Experience: N/A

Re: 2019 Mosquito Reports

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.

User avatar
Wandering Daisy
Topix Docent
Posts: 4359
Joined: Sun Jan 24, 2010 8:19 pm
Experience: N/A
Location: Fair Oaks CA (Sacramento area)

Re: 2019 Mosquito Reports

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.

User avatar
Topix Novice
Posts: 13
Joined: Tue Jun 17, 2014 6:27 pm
Experience: N/A

Re: 2019 Mosquito Reports

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.

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest