The National Weather Service forecast, updated by NWS at 11:52 p.m. Monday for Tuesday: "Sunny, with a high near 15. Wind chill values as low as -15. West wind 13 to 17 mph."
Tuesday Night: "Mostly clear, with a low around 10. Wind chill values as low as zero. West wind 5 to 9 mph."
Here's the Wind Chill Advisory, updated Monday at 9:58 p.m. by the NWS:
...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST TUESDAY... * WIND CHILL...10 BELOW TO 15 BELOW ZERO. * TIMING...THIS EVENING THROUGH TUESDAY. THE LOWEST WIND CHILLS ARE EXPECTED TO OCCUR AFTER MIDNIGHT THROUGH TUESDAY MORNING. * TEMPERATURES...FALLING INTO THE TEENS THIS EVENING...THEN LOWS ZERO TO 5 ABOVE TONIGHT AND 10 TO 15 ABOVE TUESDAY. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 45 MPH. * IMPACTS...DANGEROUSLY LOW WIND CHILLS COULD THEN LEAD TO FROSTBITE AND HYPOTHERMIA MONDAY EVENING THROUGH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES."
Northern Virginia will begin to pull out of the deep freeze by Wednesday, when the area will see a "balmy" high of 31 degrees.
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