Sunday September 19 2021 Forecast (8:49AM)

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DAYS 1-5 (SEPTEMBER 19-23)

High pressure builds into our region today then hangs around for 5 days. Currently favoring a slower-changing pattern so high pressure once it moves from just north of to just east of the area should be able to hold fair weather in place for this entire 5-day period. The autumnal equinox occurs at 3:20 p.m. Wednesday.

TODAY: Early clouds southern and eastern areas otherwise mostly sunny. Highs 70-77. Wind NW 5-15 MPH.

TONIGHT: Clear. Areas of ground fog in lower elevations. Lows 48-55. Wind calm.

MONDAY: Sunny. Highs 72-79, coolest coast. Wind variable to E up to 10 MPH.

MONDAY NIGHT: Clear. Areas of ground fog in lower elevations. Lows 48-55. Wind calm.

TUESDAY: Sunny. Highs 73-80, coolest coast. Wind SE up to 10 MPH.

TUESDAY NIGHT: Clear. Patchy ground fog interior lower elevations. Lows 55-62. Wind SE to S under 10 MPH.

WEDNESDAY: Mostly sunny. Highs 75-82. Wind S 5-15 MPH.

WEDNESDAY NIGHT: Partly cloudy. Lows 56-63. Wind S 5-15 MPH.

THURSDAY: Partly sunny. Highs 75-82. Wind S 5-15 MPH.

DAYS 6-10 (SEPTEMBER 24-28)

A trough from the west should arrive September 24 with shower chances. High pressure attempts to build in behind this for the September 25-26 weekend but with the trough still nearby and weakening we may end up in a mild to warm southerly air flow rather than a drier westerly one. This leaves the end of the period less certain as guidance now shows dry weather where it showed unsettled weather yesterday, so will re-evaluate this going forward..

DAYS 11-15 (SEPTEMBER 29 – OCTOBER 3)

The overall weather pattern should feature a general west-to-east flow but with the uncertainty at the end of the period before this, the timing of any systems beyond that is also uncertain. Still eyeing a quick cool-down somewhere during this time.

45 thoughts on “Sunday September 19 2021 Forecast (8:49AM)”

  4. The tv mets have Thursday as pretty much a washout. Since that is one of my days off, I like your outlook much better TK! Hope yours verifies. 🙂

    1. I heard the rain but not any thunder or lightning. Doesn’t mean it didn’t happen in my neighborhood of course.

      Thanks for sharing JPD.

      1. We had quite a light show. I was pulling the shades and thought something wacky was going on with my eyes. After it happened twice, I stared out the window until I could clearly see the sky light up with the lightning. It was pretty cool.

  8. Thanks, TK…

    Happy Sunday, everyone!

    An “ah…” Sunday morning! Coffee on the deck a little later.

    Go Pats!

    1. House is empty and I’m just finishing a project and off to the deck here with a second cup also!!! Enjoy, Captain!

  11. Not that it was even warm the last few days, but its nice that the ¨in between¨ air is gone today. 72F with a 65F dewpoint is confusing. Uncomfortable one second, cool the next. Today is just plain comfortable.

  12. Just for the record, I went with “hot” DD coffee today. Unless we get an unusual hot day in October, my iced coffee days are just about over for the season. 🙂

    1. I am stubborn to my iced coffee. Year round, with the occasional exception in the winter when I´m absolutely frozen.

  13. Thanks, TK. We had quite a show last night too. Not only the lightning but the thunder literally shook the house. And the downpour was so loud it sounded like hail. It moved in quickly and moved out rather quickly, but could still hear rumbles to the southeast for some time. Beautiful day today.

    2. Thanks for sending. I found it amusing that the article referenced “downtown” Barrow as if that’s a thing.

  15. Global models are changing their tune on how things evolve heading down the home stretch of September into early October.

    They’ve been trending away from west-to-east and more toward something that resembles higher amplitude and slower movement. We know the ECMWF has a bias of this, but it’s showing up on the US & Canadian models (both 12z today). I suspect it will show on the 12z European as well.

    1. Does this mean we get a batch of fresh, cool, crisp air from Canada? I have totally forgotten what that stuff feels like. 😉

      1. It would actually make it more difficult for it to get in here. Although we have one of those air masses right now, so all you gotta do is go outside. 🙂 The dew points are running middle 40s to lower 50s. Doesn’t get much more crisp than that in mid-late September.

          1. Not really. In fact there will be more “trough” than “high” near Bermuda over the next 2 weeks. It’s just not the stronger west-to-east pattern that the guidance had been forecasting.

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