Snowfall totals reported to the National Weather Service from Warren (NJ) and Northampton (PA) counties:
Excerpt taken from: AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 341 PM EDT THU MAR 19 2015 SEVERAL ISSUES TO CONSIDER...HOWEVER...IN DETERMINING THE IMPACT FROM THIS SNOW EVENT. FIRST IS THE ANGLE OF THE MARCH SUN IN COMBINATION WITH THE FACT THAT THE HEAVIEST PRECIPITATION IS EXPECTED DURING THE LATE MORNING AND AFTERNOON HOURS, WHICH FAVORS LESS SNOW. SECOND IS THE TEMPERATURE OF PAVED SURFACES VS. GROUND TEMPERATURES. BOTH HAVE BEEN HEATED BY THE SUN IN RECENT DAYS (WHERE THERE ISN'T AN EXISTING SNOW COVER). AUTOMATIC SENSORS INDICATE ROAD TEMPERATURES IN THE UPPER 40S AND 50S THIS AFTERNOON...ESPECIALLY SOUTH. THIS WOULD FAVOR LESS ACCUMULATION ON ROADWAYS WHICH WOULD REDUCE ADVERSE TRAVEL IMPACTS. BARE GROUND AND UNTREATED SURFACES, HOWEVER, ARE EXPECTED TO ACCUMULATE MORE SNOW WITH A FASTER COOL-DOWN RATE. THIRD...THERE COULD ALSO BE A BRIEF PERIOD OF SLEET IN SOME LOCATIONS WHICH WOULD REDUCE ACCUMULATIONS WHERE THAT OCCURS. FOURTH IS HOW HIGH THE MAXIMUM TEMPERATURES GO AND HOW FAST. ONE OR TWO DEGREES EITHER WAY COULD MAKE A BIG DIFFERENCE IN THIS EVENT. click here to read the full NWS Area Forecast Discussion |
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