under a winter weather advisory Tuesday<\/a>, with the highest snow amounts and greatest potential for a glaze of ice at elevations above 1,000 feet.<\/p>\nBut many already are looking ahead.<\/p>\n
A wintry mix?<\/p>\n
The first system of interest has the potential to arrive Friday afternoon and continue into early Saturday, driven by a disturbance in northwesterly flow aloft.<\/p>\n
At the surface, low pressure is forecast to move out of the Ohio Valley toward the Mid-Atlantic, with the potential for a secondary low to develop offshore Friday night.<\/p>\n
Where that secondary low forms remains a key question. Forecast models show a wide range of possibilities, from off the North Carolina coast to east of New Jersey. <\/p>\n
That track will depend heavily on the strength and position of a large area of high pressure \u2014 locking in cold air \u2014 centered over Quebec, and how quickly it shifts northeast.<\/p>\n
Recent forecast trends favor a stronger, more persistent high-pressure system, which would push the developing coastal low farther south and let colder air remain in place across eastern Pennsylvania.<\/p>\n
As a result, forecasters say the likelihood of impactful wintry precipitation \u2014 including snow \u2014 is increasing, though it’s still too early to determine exact snowfall amounts or whether the Lehigh Valley will see mostly snow, a mix or rain.<\/p>\n
‘An overrunning event’<\/p>\n
“This is going to be an overrunning event,\u201d EPAWA meteorologist Bobby Martrich said in his latest video update.<\/p>\n
“So it\u2019s going to be running into cold air at the surface, but aloft is still going to have a little bit of a warm wedge in there.<\/p>\n
“So you\u2019re going to start off as snow, we think, in most areas, and then you\u2019re going to go over to a wintry mix, maybe some freezing rain.”<\/p>\n
If the colder scenario verifies, snow could arrive on Dec. 26, narrowly missing Christmas Day.<\/p>\n
\u201cThis exact breakdown of how that\u2019s going to work out, the devil is still in the details with that,” Martrich said.<\/p>\n
\u201cThis exact breakdown of how that\u2019s going to work out, the devil is still in the details.”<\/p>\n
Meteorologist Bobby Martrich<\/p>\n
\u201cHow much snow we could get versus ice, or whatever and for where, that all has to be worked out over the next couple of days.\u201d<\/p>\n
The unsettled pattern is expected to continue into the weekend, with another system possible Sunday. That also could bring a range of weather impacts to different parts of the region, but forecasters say it\u2019s far too early for any details.<\/p>\n
Martrich said a first call from his team on Friday\u2019s storm would come on Christmas Eve.<\/p>\n","protected":false},"excerpt":{"rendered":"BETHLEHEM, Pa. \u2014 If a white Christmas topped your list to Santa this year, it looks like the…\n","protected":false},"author":2,"featured_media":70290,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[119,153,155,154,36985,36979,36980,2181,36981,928,36982,36983,36984],"class_list":{"0":"post-70289","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-bethlehem","8":"tag-allentown","9":"tag-bethlehem","10":"tag-bethlehem-headlines","11":"tag-bethlehem-news","12":"tag-chance-of-snow-after-christmas","13":"tag-day-after-christmas-storm","14":"tag-dec-26-storm","15":"tag-easton","16":"tag-lehigh-valley-weather","17":"tag-pa-weather","18":"tag-storm-after-christmas","19":"tag-will-it-snow-on-friday","20":"tag-will-it-snow-the-day-after-christmas"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us-pa\/wp-json\/wp\/v2\/posts\/70289","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us-pa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us-pa\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-pa\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-pa\/wp-json\/wp\/v2\/comments?post=70289"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us-pa\/wp-json\/wp\/v2\/posts\/70289\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-pa\/wp-json\/wp\/v2\/media\/70290"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us-pa\/wp-json\/wp\/v2\/media?parent=70289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-pa\/wp-json\/wp\/v2\/categories?post=70289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-pa\/wp-json\/wp\/v2\/tags?post=70289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}