…SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN DENTON… NORTHWESTERN COLLIN AND SOUTHWESTERN GRAYSON COUNTIES UNTIL 430 PM CDT… At 351 PM CDT, Doppler radar was tracking a strong thunderstorm over Celina, or 13 miles northwest of McKinney, moving south at 5 mph. Half inch hail and wind gusts up to 50 mph will be possible with this