Now it is possible to interactively find weather events that fit multiple criteria. e.g. For a given location, days where temp *and* dew point > p95, say to interactively detect humid heat waves. You can define thresholds on multiple params and they can be abs vals, % or std devs. t.co/gb4ND26k5D

Yes, unusual and possibly will be the driest Nov-Jan. But not without precedent. Southern Cal rainy season is famously variable (left). I asked elsewhere if Dewp Depression is a useful proxy for 'evaporative demand' - p95 in the Nov-Jan period showing + for LA (right) (and others nearby).

2024. An extraordinarily warm year. To pinpoint areas with heat-waves, a proxy is to look at the deviation of the 90th percentile of mean temperature from its historical average. Those with >=1°C (Left, heat-waves) , < 0.5°C (Right, cold-spells). 👇 #weatheranalytics

Nice recap, the two hourly rain records are hard to forget. Was the 11-inch 24hr a record as well? The most oppressive.. p90 and mean wet bulb was the highest - (beating 2023). Month by month.. (right) - wet bulb records in May,Jul,Sep (Jun, Aug 2nd). weathersight.io/citytrends?p...

14 days of readings remaining : (Images below not filtered for num of obs). Have often wondered what the map will look like with median (right). While highest mean in India is one of Nellore,Chennai,Trichy,Tirupathi, will the highest median be a location in NW? (Unlikely).

Note: Original: weathersight.io/summary?inst... The totals are preliminary. Cross checking: www.cnrfc.noaa.gov/ol.php?produ...

Northern California Nov 20 2024. Widespread heavy rain was recorded (Fig 1) as forecast. Santa Rosa, no stranger to 4" (100mm) daily totals, recorded 173 mm (~6.9 inches) , a ~ 1-in-30 yr event (Fig 2 and Fig 3) . #cawx #AtmosphericRiver

"There are so many instances of heavy rain, it is hard to keep track". We have built tools to do that and more. (Fig: Asia with more than 5 inches (125mm) of rain in 24hr period in 2024). Create your own visualizations with reliable weather statistics. Sign up to receive alerts/reports. #weather 👇

La Ceiba, 556.0mm (~22 Inches) in 24hrs. No stranger to 400mm+ totals, but this seems to be highest in a while. @afreedma.bsky.social - good to see you here.

At 10 days, 2024 is possibly the second or third foggiest (after 2013). Of course, with pollution trapped, AQI is a far better measure for human impact. During this period, the top feature for Delhi (generated by a model is indeed the high prevalence of foggy days).

Delhi, Nov 2024. The humidity levels during the first weeks of Nov have been the highest.(Fig 1). The mean dew point depression (the diff between air temp and dew point) has been one of the lowest - persistent fog was on the cards. (Fig 2). Significant +trend of moist air. 🧵 #delhifog #delhi

Numerous annual (all months) weather records were set in 2024. While most headlines were about daytime 'highs' (image: left), a much larger number of overnight low records (image: centre) were observed. It was also a notably humid year in many cities suffered their worst humid heat (img: right). 🧵

Split by city for the winter (Jun-Aug). Clicking through (on-the-website) , you can look at the past year of any of these cities. e.g. Rio Branco - Nov23 - Oct 24 and previous year amongst the driest.

During which months or seasons has your city experienced the most significant weather changes?
I attempted to answer this question with 40+ years data (observations and reanalysis). For Washington DC. (Sep,Oct, Dec). #climatechange #dataviz #weather 🧵 . Any pointers to similar data/publications?

Japan 2024. Many cities recorded their warmest October. This continues the 2024 trend of several cities across the country (Nagasaki, Hakodate, Hamamatsu) experiencing many 'record warm months' - in Feb/Mar & Jul-Oct. It was also one of their most humid, with more Tmin records than any other. 🧵

Yes, quite pronounced. It appears that November is showing a stronger warming trend (Note: Just in last ~40 yrs) . Src: weathersight.io/citytrends?p...