The stiff winds swirling about Long Island Tuesday lightened up just a bit in the afternoon, with mostly sunny skies and daily highs in the low 50s, the National Weather Service said.

A wind advisory was in effect until noon for Nassau and Suffolk counties, advising of sustained winds of 31 to 39 mph, or gusts from 46 to 57 mph, the service said.

In the afternoon hours, the winds were blowing out of the northwest in the 20-mph range, gusting into the mid-30 mph range.

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Some flight arrivals were being delayed an average of around an hour and 45 minutes at LaGuardia Airport, with some departures also being delayed, the Federal Aviation Administration said Tuesday afternoon on its website. Travelers were advised to check with their airlines.

The high winds plus relative humidity levels falling to about 20 percent mean there’s an elevated risk for the spread of brush or grass fires this Tuesday afternoon and evening, even with the recent rain, the service said in a special weather statement.

Overnight Tuesday and into Wednesday morning see clearing skies with lows in the 30s and winds shifting again to the north at 7 to 17 mph.

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It stays cool Wednesday, with daily highs in the upper 40s. But News 12 Long Island meteorologist Rich Hoffman said to look for a warming trend on Thursday and Friday.

Daily highs Thursday are in the mid-50s and push into the mid-60s on Friday, Hoffman said.

On Thursday, some late-day showers are possible, Hoffman said.

Friday also looks to be wet, with a forecast of mostly cloudy skies and scattered showers throughout the day, he said.

With Patricia Kitchen