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NOAA Assessing the U.S. Climate in October 2019

NOAA Assessing the U.S. Climate in October 2019

Alex Wierbinski's picture

By Alex Wierbinski - Posted on 24 November 2019



Extremes of US Temperature & Precipitation Continue

Assessing the U.S. Climate in October 2019,
NOAA NCEI, November 6, 2019.


Record Cold in NW with Record Heat in Southeast
"Below-average temperatures were observed from the High Plains to the Pacific Coast, while above-average temperatures blanketed the eastern third of the contiguous U.S. Parts of southern Florida were record warm."

October Temperatures
NOAA October US Mean Temperature Percentiles.
October US Mean Temperature Percentiles

Extreme Cold Event in Northwest
"An early-season snowstorm and associated bitter cold temperatures affected Rockies and Midwest...All-time record low temperatures for Oct were set across the West.

Extreme October Temperature
"Peter Sinks, UT, often one of the nation’s coldest locations, dropped to −46°F early on October 30, according to the Utah Climate Center. This temperature may be the coldest October temperature on record across the contiguous U.S."

Cold October
"...the average contiguous U.S. temperature was 52.3°F, 1.8°F below the 20th century average."



Southeast Heat
"Record heat blanketed the Southeast and mid-Atlantic states the first week of October, shattering many all-time October heat records."

Northwest Heat
"Below- to much-below-average October temperatures were observed across the Northwest, Intermountain West, Great Plains, and western Great Lakes. Idaho ranked coldest for the month, breaking the 1919 record by 0.8°F. The states of Washington, Utah, and Wyoming ranked second coldest during October."

Alaska Continues Baking
"Alaska ranked in the warmest third of the October record with a statewide average temperature of 30.8°F, 5.3°F above the long-term average. Parts of the North Slope experienced temperatures averaging at least 9°F warmer than the historical average, while much of the Panhandle experienced a mild October. It was the second warmest October for Utqiaġvik (Barrow)."

Alaska Recently

Oct 2019
Full Range of Rapid Climate Changes Across the Arctic Felt in Alaska

June 2019
Alaska Skips Mid-Winter to Experience Late Spring Conditions in March


October Precipitation
NOAA October US Total Precipitation Percentiles
October US Total Precipitation Percentiles


Eastern US Wet
"Above- to much-above-average precipitation was observed across much of the eastern half of the contiguous U.S. Mississippi ranked wettest during October, while 11 additional states ranked among their 10 wettest Octobers on record."

Western US Dry
"Below- to much-below-average precipitation occurred across the West, with Arizona and California ranking among their 10 driest Octobers on record."

Early Season North Plains & Rockies Snow
Cold & Snowy
"An upper-level trough and an associated cold front brought the northern Rockies and Plains their first significant snowstorm of the season. From October 9–13, one to two feet of snow accumulated across portions of Montana and North Dakota, with several locations noting their snowiest start to the season. Great Falls, MT, reported 27 inches of snow while Bismark, ND, measured 17.1 inches for the season-to-date."

Wet & Warm Alaska
"October was wet across much of Alaska with portions of the Northeast Interior, Southeast Interior, and West Coast divisions reporting record wet conditions for the month."

Extreme Weather

A bunch of Tropical, Post-Tropical, and Subtropical Storms, October Fires in California.

Year to Date Temperatures
NOAA Mean US Temperature Percentiles January-October 2019.
Mean US Temperature Percentiles January-October 2019

Hot West across South to Southeast
"Above- to much-above-average year-to-date temperatures were observed from California to the southern Plains and from the Southeast to New England."

Extreme Cold in North Plains
"Below-average temperatures occurred across the northern Plains and parts of the Midwest with South Dakota having its seventh coldest year-to-date period on record."

Extreme Alaska Warmth
"Alaska had its second warmest January–October on record. Record heat blanketed much of the North Slope and northern West Coast with portions of the Aleutians, the Northeast Interior, and Central interior also reporting record warm conditions. The rest of the state had above- to much-above-average temperatures for this 10-month period."

Year to Date Precipitation
NOAA Total US Precipitation Percentiles January-October 2019
Total US Precipitation Percentiles January-October 2019

North Plains & Corn Belt Drenched
"Above-average January–October precipitation dominated much of the country with record wet statewide ranks occurring in South Dakota, Minnesota, Wisconsin, Illinois, and Michigan."

The West is Dry
"Below-average precipitation fell across the Pacific Northwest, parts of the Southwest and Southeast."


Last Month
NOAA September in the USA


The Bottom Line

With our planet's steadily increasing land and sea temperatures we have already been experiencing increasing extreme weather. Extremes of cold and hot, extremes of wet and dry, and extremely violent conditions are becoming increasingly common during every month of the year, even as the planet steadily warms.
These increasing extremes are expressions of a vast interconnected system of climate and ecology that's been driven out of balance, that's changed and still changing, though we can see that its climatological, "direction," is clearly pointing towards a future environment in the High Sierra, California, and the Southwestern United States with very much less available water and very much more heat. These trends are indisputable through the recent past, their trajectory into the future quite clear.

Sources of Southern and Northern Extremes
The View from Latitude 38
Nonetheless, this excess heat is boiling the Tropics, from whence we can expect to see highly enhanced versions of those vast Tropical flows of superheated and supersaturated clouds known as, "Pineapple Expresses," which I prefer to call, "Tropical Transport Mechanisms." We've already seen these things multiply in numbers and intensity over recent decades, and should expect to see these tropical flows increasing substantially in both frequency and intensity as our planet's tropical oceans and airs continue to heat up.
On the other hand, and from the other direction, we've seen the steady warming of the Arctic and its Polar Vortex causing it to warm, weaken, and slow during mid-Winter, and begin wobbling more and more around the top of our planet like a drunk driver, even splitting into multiple vortices during Winter, appearing to act almost drunkenly as it stumbles South, driving cold Polar airs to places they normally would not go.

Extreme Blocking
The effects of our warming atmosphere and oceans have on weather mechanisms to our North and South have altered the forces driving our weather, the weather in-between Tropics and Arctic, which is now bringing extremes of cold, dry, hot and wet far out of the range of our, "normal," weather's patterns and ranges. In our case, when these disruptive patterns can even get here.

The Ridiculously Resilient Ridge
The presence or absence of the huge High Pressure Ridge that has been forming and standing off The West Coast of the US off and on for almost the last decade is going to be the main factor determining what weather's going to hit the West Coast and the High Sierra this Winter. It's already sat there for pretty much the whole month of October, 2019.

Regional and Local Effects
Though the warming of California, the whole Southwest, and the High Sierra that we've been watching over the last couple of decades has had critical effects on its ecosystems, its been the global-warming driven changes in the formation and movement of weather patterns over the Northeastern Pacific Ocean, that's matching up with our increased land temperatures, to change the timing, length, and nature of the seasons in the High Sierra and much of the West and Southwestern United States.

The slowing polar vortex, the warming waters of the Gulf Alaska, the persistent, strong ridging pattern off the West Coast of the US are all contributing factors and expressions of this particular disastrously dangerous step we're taking to our new climate and weather. We are crossing, "tipping points," into whole new seasonal patterns all around the whole Northern Hemisphere.

Combination of Factors
It's this combination of locally warming temps with shifting planetary weather patterns which has opened the door to mega-floods, mega-droughts, and rapid shifts between a wide range of extreme weather conditions. The old patterns have been broken.

Our planet's climate and weather systems are partially de-stabilised, kind of like a fire hose that the first three firemen on the hose lost control of, and though it (our weather) is swinging around wildly, its quite clear that temperatures are trending steadily warmer, while at the same time our main source of Winter precip here in California and the High Sierra has been steadily shifting from cold Winter weather coming predominantly out of the NW, to warm weather coming predominantly out of the West and Southwest. If it can even get to us through the persistent Winter ridging pattern that's establishing (established?) itself off the West Coast of the US.

We'll see!

Fundamental Change
Such are the effects of the increasing power of Equatorial tropical flows against the decreasing cold Winter temperatures swirling around the North Pole. Chaos is, and will continue to characterize these fundamental changes that are happening to our climate and ecology.



Extreme Weather Increasing

Cal to Ride the Tiger: Climate Change Weather Extremes to Lash California

Our Ecological Consequences: Rising Average Temps, Extremes of Hot & Cold

Rapid Radical Warming

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

Increasing Tropical Transport

New Measure of Strength and Impacts of Atmospheric River Storms

Polar Vortex

Polar Vortex Splits Under Warming Stratosphere

The Ridiculously Resilient Ridge

Freak Weather News: The Ridiculously Resilient Ridge, What It Is, Changes it’s Undergoing, Where it's Going

Regional and Local Effects

Growing into Destruction: The Diminished, and Diminishing Western US Snow Packs

Tying It All Together

The Relationship between Jet Stream Breakdown, Polar Vortex Instability, & Loss of Sea Ice





Rainfall Anomalies

United States Drought Monitor

NOAA Drought Outlook

US Drought Portal



Addressing the Sources of Environmental Destruction






News of Man & Nature, November 2019









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






NOAA, climate assessment, US, United States, October, 2019, land, surface, temperatures, precipitation, drought, cold, freeze, record, low


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