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
oddtiger
Topix Acquainted
Posts: 26
Joined: Thu Jan 25, 2018 5:45 pm
Experience: Level 4 Explorer
Location: Los Angeles, CA

Re: 07/19-07/21 Dinkey Lakes Wilderness

Post by oddtiger » Mon Jul 22, 2019 8:18 pm

AaronRDavis wrote:
Mon Jul 22, 2019 4:00 pm
TahoeJeff wrote:
Mon Jul 22, 2019 3:44 pm
oddtiger wrote:
Mon Jul 22, 2019 8:39 am
With full protection (long sleeves/winter hiking pants/headnet/deet), I got about 50 bites.
yosemite samizdat wrote:
Mon Jul 22, 2019 2:34 pm
I coated my clothes and exposed bits with deet and ended up with 75-100 bites.
Vish wrote:
Mon Jul 22, 2019 3:28 pm
despite treating clothes and periodic deet showers. Ended up with 20-30 bites
Man, those are some damn persistent blood suckers. Even with chemical warfare!
Indeed.

Curious if these 3 posters had bites actually through their clothing (if so, what material?), or just on the minor areas of unprotected skin? The correct choice of fabrics can completely mitigate the former in my experience. I’m wondering just how bad things will be next week if I go in with optimal clothing system.

I got bites mostly on the unprotected skin, like fingers (8 on them!), face while eating, and areas that are in contact with tensioned fabrics (shoulders and knees). Some bites are under two layers of fabrics though. I would say it's possible to get it down to 10 bites per day if I'm careful enough with protection, and don't have to take care of my daughters. They are 4yo and 6yo, and I have to keep checking on their protection...








User avatar
bobby49
Topix Expert
Posts: 695
Joined: Sat Nov 11, 2017 4:17 pm
Experience: Level 4 Explorer

Re: 2019 Mosquito Reports

Post by bobby49 » Mon Jul 22, 2019 8:52 pm

You need some industrial grade DEET. That was the standard for infantry troops in the Vietnam War.

User avatar
tomba
Topix Regular
Posts: 308
Joined: Sat Jun 18, 2011 12:50 pm
Experience: Level 4 Explorer
Location: Bay Area

Tableland 7/18-7/21

Post by tomba » Tue Jul 23, 2019 9:16 am

Route taken: Wolverton, Table Meadows, Tableland Pass, the two lakes above Big Bird Lake (WL 10435 T), traverse to the lakes north (WL 10402 T), back to Tableland Pass, along the ridge to the valley NE of Moose Lake, Moose Lake, N then down to Marble Fork Kaweah River near MILE 14 (W from hill 10251 T), and out.

There were just a few mosquitoes all the way to Table Meadows in some places (not all places) when stopped. Above Table Meadows (camped there) - mosquitoes become bothersome. This was unexpected, because I thought that snow has melted there recently. Almost no mosquitoes mid day on Tableland Pass and near lakes WL 10435 T. Bothersome mosquitoes on the traverse to lakes WL 10402 T and at these lakes (camped there). Also unexpected because I thought that that area has just thawed. Do they come from Deadman Canyon? Almost no mosquitoes on the way back from Tableland Pass to Moose Lake (camped just above it) and thereafter.

There was not much wind the whole time.
-- Found trash? Please pack it out. Thank you.

User avatar
SSSdave
Topix Addict
Posts: 2827
Joined: Thu Nov 17, 2005 11:18 pm
Experience: N/A
Location: Silicon Valley
Contact:

Re: 2019 Mosquito Reports

Post by SSSdave » Tue Jul 23, 2019 9:18 am

Agree 100% DEET. But more important is to abandon the dominant shorts and t-shirt hiking uniform so many wear. The key strategy during mosquito season is to cover up skin with clothing squeets cannot poke their probosci through. There are plenty of older threads where all that is discussed. See my inputs on page 2 at below link. I rarely have more than a few bites during even week long trips and those are almost always on hands/wrists while vulnerable working my camera gear after washing my hands that I do frequently leaving that skin unprotected.

viewtopic.php?f=15&t=7828&p=56699&hilit=mosquito#p56699

User avatar
Jmcnamara5
Topix Novice
Posts: 7
Joined: Tue Jul 16, 2019 1:17 pm
Experience: Level 3 Backpacker

Re: 2019 Mosquito Reports

Post by Jmcnamara5 » Tue Jul 23, 2019 11:53 am

Pine creek Pass Trail 7/19-7/22
Lower Pine Creek Lake to Granite park - Solid 3-4 entire time

User avatar
rayfound
Topix Regular
Posts: 347
Joined: Thu Apr 24, 2008 4:44 pm
Experience: Level 3 Backpacker
Contact:

Re: 2019 Mosquito Reports

Post by rayfound » Tue Jul 23, 2019 12:29 pm

Anyone been to Rock Creek Lake/Mosquito Flats/LLV lately can report on Skeeter situation? Trying to find somewhere to take the kids car camping, but my daughter often gets pretty intense reactions to insect bites.

Thanks,
Last edited by rayfound on Wed Jul 24, 2019 10:44 am, edited 1 time in total.

User avatar
Jimr
Forums Moderator
Forums Moderator
Posts: 1936
Joined: Fri Jul 31, 2009 2:14 pm
Experience: Level 4 Explorer
Location: Redondo Beach

Re: 2019 Mosquito Reports

Post by Jimr » Tue Jul 23, 2019 9:19 pm

just got back from Lamarck and Wonder lakes. Full on continuous 5 from start to finish. I suspect the whole Bishop Creek drainages are the same.
@rayfound , the ranger at Lee Vining and at Bishop both said that skeeters were in full force up and down the East side.
“Posterity! You will never know, how much it cost the present generation, to preserve your Freedom! I hope you will make a good use of it. If you do not, I shall repent in Heaven, that I ever took half the pains to preserve it.”

-John Adams

User avatar
rayfound
Topix Regular
Posts: 347
Joined: Thu Apr 24, 2008 4:44 pm
Experience: Level 3 Backpacker
Contact:

Re: 2019 Mosquito Reports

Post by rayfound » Wed Jul 24, 2019 10:44 am

Thanks Jimr. Not exactly what I wanted to hear... but not very unexpected.

User avatar
SSSdave
Topix Addict
Posts: 2827
Joined: Thu Nov 17, 2005 11:18 pm
Experience: N/A
Location: Silicon Valley
Contact:

Re: 2019 Mosquito Reports

Post by SSSdave » Wed Jul 24, 2019 12:07 pm

Interesting how this mosquito season has been unfolding later than normal due to the huge higher elevation snow pack. In the southern Sierra during June when mosquitoes usually peak they were surprisingly modest while now in late July when they usually are on the wane, they are peaking.

Much of our high country landscapes is glaciated bedrock granite where myriad shallow snow melting pools form. Hibernating snow mosquitoes rise up from lower mountain elevations when snow melts and daily freeze thaw cycles have ended. As snow melts at gradually higher elevations, mosquitoes follow into higher elevations to where such pools are common in order to lay eggs and create consecutive life cycles of increasing numbers. Most summers by the end of June, most such pools have dried up only leaving stream and lake edge corridors and lower elevation cooler forested slopes and meadows for breeding. Additionally the delayed rise of damselflies and dragonflies that voraciously eat squeets follows the migration but usually remain below timberline where winds are lower and mosquitoes are more likely to be flying about in the air they might eat.

However this summer high elevation pools above timberline will last well into August producing extra life cycles resulting in more mosquitoes than ever at many typical backpacking elevations.

User avatar
fpb56
Topix Acquainted
Posts: 24
Joined: Sat Mar 02, 2019 11:35 am
Experience: Level 3 Backpacker

Yosemite High Sierra Conditions July 18-24

Post by fpb56 » Thu Jul 25, 2019 7:02 am

On an 82 mile trip from Mount Hoffman through Clouds Rest, Merced Lake, Washburn Lake, Triple Peak Fork, up towards Isberg Pass, Lyell Fork and Vogelsang, the mosquitos were a 3 overall. The altitude didn't seem to matter,8000'-10,000,' only the amount of canopy overhead. We had plenty of Deet 98% that kept them at bay. Yes there were irritating but not a big deal. Thanks DEET!

Post Reply

Who is online

Users browsing this forum: No registered users and 5 guests