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More from @ScottDuncanWX

Scott Duncan

@ScottDuncanWX

1 Dec

Parts of the Arctic averaged up to +14 °C above normal for the entire month of November.

Preliminary data suggesting we witnessed the hottest November globally on record.

2020 is on track to be the hottest year on record.

[THREAD]

Cold in Canada,
Cool La Niña in the pacific,
Cold in Central Asia...

But that's about it for cold.

Enormous warm anomaly over the Arctic from Arctic amplification with significant heat records tumbling in Australia.

@BOM_au

Speaking of Australia (again)...

-Hottest November ever.
-Hottest Spring on record and +2 °C above the 1961-1990 average.

First ever spring with an anomaly above +2 °C.

🇦🇺 Stats via @BOM_au

Read 14 tweets

Scott Duncan

@ScottDuncanWX

30 Nov

Impressive volcanic eruption on the island of Lembata, Indonesia 🇮🇩 yesterday at 9:45 am local time.

Ash column reached over 55,000 feet (17 km) into the atmosphere. The white cloud at the top is called Pileus.

🎥 by Teguh Dwi Hartono.

You can see the eruption from space.

You can see it for yourself 👇

worldview.earthdata.nasa.gov/?v=122.0113731…

Pileus clouds?

They are amazing and are an indication of air rising very quickly through the atmosphere.

They are usually indicators of severe weather above a cumulonimbus. But explosive volcanic eruptions do a similar job.

Photo is a separate eruption Sarychev Peak 🇷🇺

Read 4 tweets

Scott Duncan

@ScottDuncanWX

16 Nov

5 years in a row of category 5 hurricanes. This has not happened in recorded history going back to 1851.

#Iota is about to make landfall as a powerful category 5 storm. Nicaragua and Honduras can't take another major hurricane. It was only 2 weeks since category 4 #Eta.

@WeatherProf

The track of #Eta overlaid projected landfall of #Iota is insane. Two major hurricanes within a fortnight in November. Eta struck Nicaragua on 3 November.

Check out this comparison by @WeatherProf.

Heartbreaking.

https://twitter.com/WeatherProf/status/1328368889386983425

https://twitter.com/JakeCarstens/status/1328350147093393408

Here are some of the beasts from the last 5 years.

https://twitter.com/JakeCarstens/status/1328350147093393408

Read 4 tweets

Scott Duncan

@ScottDuncanWX

14 Nov

This is just cruel.

#Iota is the 30th named Tropical Storm and is expected to become a major Hurricane by early next week

Iota is heading for Central America, likely to hit communities still trying to recover from Hurricane Eta which struck only a few days ago.

THREAD

#Iota is the 30th named storm of this record breaking hurricane season. Winds will be violent but attention quickly turns to flooding potential, again.

Major landfall is looking likely early next week. Honduras 🇭🇳and Nicaragua 🇳🇮 in the immediate firing line.

@NHC_Atlantic

The track of hurricane #Eta is first image and latest forecast for #Iota from @NHC_Atlantic is the second image.

It is important to note that there is still track and intensity uncertainty and it is crucial to follow official forecasts at nhc.noaa.gov

Read 4 tweets

Scott Duncan

@ScottDuncanWX

5 Nov

It's like the planet has a fever.

October 2020 helps show the impacts of a changing climate. The Arctic did not freeze due to warmth stored in vast areas of open water - this was a record breaking month for lack of ice.

The air temperature was extremely high compared to normal.

The minimum ice extent did not beat the all time low record in September.

But we did drop all time record low levels through parts of October. Siberian seas suffered the heaviest lack of ice.

You can see how much warmer than normal the sea surfaces were through October here.

A baking hot summer and serious lack of ice meant that the refreeze struggled.

The weather pattern also meant that records were achievable more easily.

Read 7 tweets

Scott Duncan

@ScottDuncanWX

1 Nov

Extremely violent thunderstorm in Brisbane, Australia 🇦🇺 delivered enormous #hailstones.

Catastrophic damage costing over $50 million.

Short thread...