Metro Detroit weather: Wintry mix to slow evening rush hour

Warmer temperatures expected next week


DETROIT – Two main surges of precipitation-causing dynamics were heading our way Friday afternoon.

The first one came while we still had a very dry air mass from the surface up to a mile or two, and the dry air seriously ate into the snow that developed. That first surge started to moisten things up, and that will allow the second surge to bring a more organized and heavier band of precipitation through the area.

As of 3:45 p.m., freezing rain, snow and even some thundersnow is approaching the far western suburbs. The timing is not good for the afternoon rush hour. Fortunately, this band of precipitation will last only 90 minutes to two hours, so snow accumulations will be modest -- perhaps an inch on grassy areas.

The rest of the night should feature scattered light snow showers, with lows by Saturday morning in the low 30s (0 degrees Celsius). Southeast winds will shift to the southwest at 4 to 8 mph. Roads will be wet or even a bit slushy Friday evening, so be careful if you’ll be out at St. Patrick’s Day celebrations.

St. Patrick’s Day weather in Ireland

Speaking of St. Patrick’s Day, I like to give you a weather report every year on the holiday from Ireland itself. Here’s what my colleague Siobhan Ryan at RTE in Ireland reported to me earlier in the day:

"Cool and blustery for the parades this morning, but at least it’s held dry across the south and east of the country. Last year was a dazzlingly beautiful day. To remain breezy right through our weekend, with an intermittent light rain, but it certainly won’t get in the way of our celebrations. The max (temperature) will come an average of 10 degrees (50 degrees Fahrenheit), given it’s a gusty day across the Emerald Isle. That’s probably a degree or two (2 to 4 degrees Fahrenheit) below average. I’m looking out at overcast skies here in Baile Atha Cliath (Dublin), after some early morning brightness. Happy St. Patrick’s to all the Irish over your way!"

If you want a little background about my meteorological Irish friend, you can read her bio here.

This weekend’s forecast

It will be cloudy on Saturday, with scattered light snow and rain showers. Parts of the day might end up dry, and other parts might have a few flakes or drops. Highs will be in the low to mid-40s (6 to 7 degrees Celsius).

Saturday’s sunrise is at 7:40 a.m., and Saturday’s sunset is at 7:44 p.m.

It will be cloudy with diminishing scattered rain showers Saturday night, with lows near 30 (-1 degree Celsius).

Sunday will be mostly cloudy to start, then it will become partly cloudy. Highs will be in the low to mid-40s (6 to 7 degrees Celsius). It will be partly cloudy Sunday night, with lows in the mid-30s (1 degree Celsius).

Next week’s weather

It will be mostly cloudy on Monday with rain showers developing. Highs will be near 50 degrees (10 degrees Celsius).

Rain showers will gradually diminish Monday night, with lows in the low 30s (0 degrees Celsius).

It will be partly cloudy on Tuesday, with highs in the mid-40s (7 degrees Celsius).

Wednesday will be mostly sunny and a little breezy, with highs in the upper 30s (4 degrees Celsius).

It will be partly cloudy on Thursday, with highs in the low to mid-40s (6 to 7 degrees Celsius).

Showers are likely on Friday, with a thundershower possible. Highs will be in the mid-50s (12 degrees Celsius).

Next weekend looks dry at this point, with mostly cloudy skies becoming partly cloudy on Saturday and highs in the low 50s (11 degrees Celsius). There will be mostly sunny skies on Sunday with highs in the low 50s (11 degrees Celsius).

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