More widespread rain in the forecast today, and temperatures will be more reminiscent of late February, rather than early May. This is a very unusual weather pattern, and its courtesy of a large-scale feature in the jet stream called an “Omega block”:
The jet stream pattern resembles the Greek letter omega (Ω) — the consequence for the eastern half of the country is wet and unsettled weather, while unseasonably warm weather out west pushes all the way up into Canada.
No thunderstorms expected today, just steady light rainfall. The HRRR model’s radar simulation shows the rain finally pushing eastward by this evening:
Temperatures will only reach the mid 50s when that eastward “push” begins:
If that forecast high of 55 is correct, it would set a new record for the coolest high temperature on this date:
Remember it was just six days ago that we experienced the warmest April day on record in Nashville! Crazy.
Clearing skies tonight, with lows in the mid 40s, then back up to around 70° Saturday:
Another brief round of showers will move through Saturday afternoon — the RPM model’s radar simulations shows that the showers will be scattered and short-lived, but you should still have an indoor alternative for outdoor plans:
Temperatures return to normal next week, but there’s still significant uncertainty in terms of our rain chances…and that throws some uncertainty into the temperature forecast as well. (More on the reasons why in the first of the nerd-links below.) Stay tuned for potential changes as you’re making plans for next week:
- The “Omega block” controlling our weather is just a small part of a wild and unpredictable weather pattern around the whole Northern Hemisphere.
- Researchers have found pieces of Earth’s “original” crust in Canada.
- NASA’s Juno space craft has been sending back some great images from Jupiter, and now scientists are getting a chance to dive into some actual data as well.
- The Cassini spacecraft took another dive between Saturn and its rings. Here’s what it saw.
- Stephen Hawking made news recently by claiming that humanity needs to begin colonizing another planet within the next 100 years. Is he right?
- Will emojis be your next digital password?
- Is breakfast really the most important meal of the day?
- Some leftover “Star Wars Day” (May the fourth) content…
- “Star Wars” tech: 8 sci-fi inventions and their real-life counterparts.
- How a lightsaber works.
- Twitter’s “Bad Astronomer” Phil Plait wonders: Does Star Wars REALLY take place a long time ago in a galaxy far, far away?
- Could we even tell if the universe around us was filled with galactic empires and rebel forces?
- Just coincidence that I’m sharing this on Cinco de Mayo: How your liver grows during the day and shrinks at night.