Watching the Changing Character of the High Sierra & California’s Climate

Alex Wierbinski's picture

By Alex Wierbinski - Posted on 28 February 2019


Tropical Storm into Eastern Sierra, Fall of 2013
Fall Tropical Storm sucking up dust crossing Deserts to the Eastern Sierra
Fall Tropical Storm sucking up dust crossing Deserts before hitting the Eastern Sierra




Living Under The Changing Character of the High Sierra & California’s Climate,
High Sierra Backpacker, February 28, 2019


It’s Going Tropical
The Tropical Winter Weather of 2019

“Traditional” Weather
Heavy Cold Precip from North: Feb 4 Calendar


First TTM Tropical Downpours Feb 15, ‘19


Second TTM Feb Tropical Downpours Feb 26, ‘19


Next TTM?

March 1 or 2?



Tracking Tropical Moisture

New Measure of Strength and Impacts of Atmospheric River Storms



Recent History
Tracking The Trajectory of Change

July ‘17

The Tropics are Here


Tropical Planet: Tropics are widening as predicted by climate models



Tropical Weather Marching North Everywhere

April ‘18

Weather News: Tropical Times, Radically Changing Mountain Weather

WEATHER NEWS, Recent Record Rainfall, April 7-8 Tropical Transport Mechanisms


Tropical Downpour Contributes to Fatality, Flash Flood Warning for Donnell Fire Area


Around the World, 2018...

Near Record Downpours in Kaui: Kalalau Trail Closed

Freak Weather, 2018: Record Rains Devastate Japan


Feb ‘19

High Sierra Climate was / is Shifting… to a tropical climate zone…

Winter 2019 Status: Tropical Transport & Storms of February 13

North American City Climates will shift Hundreds of Miles in One Generation




41% Sierra & Rocky Mountains Snow Pack Loss since ‘82
 It turned into rain...



79% Reduction, from Today’s Reduced Pack, by 2100
It's turning into rain...



It’s Only Getting Hotter and Hotter...

Heat Rising Quickly
Climate Model Research

Worse models the Best?

Two Degrees Already Baked In

Improved Models Show Grim Future

Four Degrees by 2084


More Fun Coming...
Warming Seas to Radically Increase Frequency of Extreme Storms by 2100


The Bottom Line

The Arctic no longer controls the Winter Weather across the Sierra. The major influences determining how our seasons progress are now determined by the Tropics.

The Polar Vortex has radically weakened as Tropical heat has increased. This increasing, “weakness,” of the Polar Vortex has radically changed the “dynamics,” of the seasonal interaction between the once cold top of our planet and it's warming Equatorial Zone, and the changing interactions between the two are deepening and accelerating.


A High Altitude Look at the Polar Vortex


10 hPa, roughly 84,998.2 feet of elevation.

A rough table of pressures and altitudes.


Dying Polar Vortex

Jan ‘19

Polar Vortex Sliding off Top of Planet, Arctic Weather Plunges into North America


Jan ‘19

Global Warming Freak Show Weather


Feb ‘18

Warm Arctic Chills Dixie? Warming Arctic Channels Frigid Air South



Spring Tropical Thunderstorm in High Sierra


Eastern Thunderstorm Hits Sierra Nevada from Gulf of Mexico




The High Sierra Weather Page


February 2019 Trail News




Nature News


Climate Destruction News



Bee News

Bear News

Spider Forum

Bird News

Small Mammals

Frogs and Reptiles

Butterfly News


Health and Fitness

Mountain Safety

Mosquito News

Female Trail

High Sierra History


Astro-Phys, Space, & Science News

High Sierra Geology News

Fish, Oceans, & Water News



All High Sierra News





High Sierra, weather, February, 2019,  tropical, transport mechanism, warming, equator, polar vortex


Powered by Drupal, an open source content management system


Latest News: RSS FEED

Syndicate content

Support Tahoe to Whitney

The Tahoe to Whitney Trail Guide and Magazine are walked, written, funded, and supported by my efforts, with the help of kindred spirits and my sister.

We offer valuable Trail Guide, Skills, Weather, News and Analysis.

My goal is to get you out to see your natural and social potential. Help me keep this unique resource accessible and expanding towards its potential. We've a lot of miles to cover ahead...

If you feel these efforts are valuable, I'm cordially inviting you to support them, here:



I am currently working towards publishing the completed guide between Tahoe & Yosemite as an e-book, while converting this "blog" to a fine magazine format. You will like the results! Help Tahoe to Whitney reach its potential!


Why Support Tahoe to Whitney?
Mission Statement