textproduct: Philadelphia/Mt Holly
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
WHAT HAS CHANGED
Frost Advisory expired.
KEY MESSAGES
1. Additional chances for much-needed rain arrive during the middle of this week.
DISCUSSION
KEY MESSAGE 1...Additional chances for much-needed rain arrive during the middle of this week.
A weak frontal boundary approaches the region late Tuesday, bringing a chance for light rain. The chances for meaningful rainfall with this system appear to be decreasing with high pressure staying close by and the frontal boundary largely washing out across the region. Another stronger low is still expected to arrive late Wednesday into early Thursday that is expected to bring more widespread showers and perhaps an isolated thunderstorm across the region. Forecast rainfall amounts Wednesday evening through Thursday morning will range from around 0.75 to 1.00 inches.
AVIATION /12Z MONDAY THROUGH FRIDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.
Today... There may be patchy light fog across the KRDG/KABE/KTTN sites and also for KMIV/KACY for the predawn hours, We've continued the tempo groups in case this develops. Other than that, VFR conditions with mostly clear skies are expected for Monday. Winds will be light from the N or NE this morning before veering E or SW by afternoon. High confid, except for fog formation before dawn.
Tonight... VFR will continue with Clear skies. Light SE winds expected. High confid.
Outlook...
Tuesday...VFR with increasing and lowering clouds. A few afternoon or evening showers possible.
Wednesday...Sub-VFR conditions along with showers, especially in the afternoon and at night.
Thursday...Some showers possible, mainly early. Mostly VFR. Northwest wind gusts up to 20 knots.
Friday...Mainly VFR. West-northwest wind gusts 20-25 knots during the day.
MARINE
High pressure will build across the waters today. Light N to NE winds will switch around to E or SE later today. Winds speeds will remain mostly around 10 knots much of the time. Seas which remain around 5 to 6 ft this morning will slowly diminish. We'll continue with the ongoing SCA flag with the 4AM update.
Outlook...
Tuesday through Thursday...SCA conditions possible due to elevated seas around 5 feet.
Friday...SCA conditions possible from winds and seas.
PHI WATCHES/WARNINGS/ADVISORIES
PA...None. NJ...None. DE...None. MD...None. MARINE...Small Craft Advisory until 6 PM EDT this evening for ANZ450>455.
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