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


Alex Wierbinski's picture

By Alex Wierbinski - Posted on 28 February 2019

WEATHER NOTES

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

 

WILD WEATHER

 

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

MAIN POINTS

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

September

Tropical Planet: Tropics are widening as predicted by climate models

 

2018

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

September

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

 

 

THE RECENT PAST

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

 

THE FUTURE

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

 

ENVIRONMENTAL CONTEXT

It’s Only Getting Hotter and Hotter...

Heat Rising Quickly
Recent
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

EARTH

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

2013

Eastern Thunderstorm Hits Sierra Nevada from Gulf of Mexico

 

 

 

The High Sierra Weather Page

 

February 2019 Trail News

 

 

 

More
Nature News

 

Climate Destruction News

 

Trees

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

Anthropocene

 

All High Sierra News

 

 

TOP

 

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

 

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