...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 AM EST THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 AM EST THURSDAY. * LOCATIONS...THE EAST COAST OF MASSACHUSETTS FROM BOSTON NORTH... AS WELL AS NORFOLK AND SOUTHEAST MIDDLESEX COUNTIES IN MASSACHUSETTS. * HAZARD TYPES...HEAVY SNOW AND SOME SLEET. * ACCUMULATIONS...4 TO 8 INCHES OF SNOW TODAY. AN ADDITIONAL 4 TO 10 INCHES OF SNOW VERY LATE TONIGHT AND WEDNESDAY WITH THE HIGHEST AMOUNTS MOST LIKELY ALONG AND ESPECIALLY NORTH OF THE MASSACHUSETTS TURNPIKE. * TIMING...SNOW WILL OVERSPREAD THE REGION BY 8 AM THIS MORNING. THE SNOW WILL IMPACT AT LEAST PART OF THE MORNING RUSH HOUR. SNOW CONTINUES THROUGH THE DAY...FOLLOWED BY A BRIEF BREAK THIS EVENING. MORE SNOW THEN SHOULD ARRIVE VERY LATE TONIGHT INTO WEDNESDAY. SNOW WILL LIKELY BE FALLING MODERATE TO HEAVY DURING THE WEDNESDAY MORNING RUSH HOUR. THERE WILL LIKELY BE A CHANGE TO SLEET AND POSSIBLY SOME FREEZING RAIN WEDNESDAY AFTERNOON. THE MIXED PRECIPITATION SHOULD END AS A PERIOD OF LIGHT SNOW WEDNESDAY NIGHT. * IMPACTS...UNTREATED ROADS WILL BE SNOW COVERED AND SLIPPERY. PART OF THIS MORNING/S RUSH HOUR WILL BE IMPACTED. THE SECOND PART OF THE STORM WILL IMPACT THE WEDNESDAY MORNING RUSH HOUR. SIGNIFICANT SNOW AND SLEET ACCUMULATIONS WILL MAKE TRAVEL ON UNTREATED SURFACES TREACHEROUS. THE ADDITIONAL SNOW COULD FURTHER STRAIN WEAKER STRUCTURES AND TREE LIMBS. A FEW POWER LINES MAY ALSO BE DOWNED...RESULTING IN ISOLATED POWER OUTAGES. * WINDS...NORTH 15 TO 25 MPH. * VISIBILITIES...ONE QUARTER TO ONE HALF MILE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING IS ISSUED WHEN AN AVERAGE OF 6 OR MORE INCHES OF SNOW IS EXPECTED IN A 12 HOUR PERIOD...OR FOR 8 OR MORE INCHES IN A 24 HOUR PERIOD. TRAVEL WILL BE SLOW AT BEST ON WELL TREATED SURFACES...AND QUITE DIFFICULT ON ANY UNPLOWED OR UNTREATED SURFACES. &&