MONDAY FORECAST & WEEK WEATHER OUTLOOK

Updated Mon 10:22 AM — We may see some sunshine after 3 PM today.  High temp 56.5º sd 1.2º


An active Spring weather pattern this coming week, with several areas of low pressure affecting us.

For Monday, low pressure will move just to our south, bringing cloudy skies until the mid to late afternoon.  Partial clearing later in the afternoon.  The precipitation shield as shown by the GEFS  (below) likely will remain even further south than shown.

Monday will be mostly cloudy with a chance of light sprinkles, mostly far southern areas.  Clouds may lift during the afternoon. High 57.2º sd 1.8º.

GEFS model precipitation forecast for Monday 10 AM

 

For Tuesday, a front moves through with showers—

GEFS Tuesday forecast 2:30 PM

Yet another more significant rainstorm approaches Thursday and is likely to  linger into part of Friday —

GEFS Friday 4 AM forecast

We’ll see how it all plays out during the week.

 

SUNDAY FORECAST UPDATE

High pressure builds in for early Sunday.  Sunny skies in the morning after a cold start.

Sunday afternoon, low pressure begins to approaches from the southwest as a weak cold front sinks south.  Clouds move in between 2 and 4 PM Sunday afternoon.
High temp 60.8° sd  1.4°
Some light showers possible Sunday evening.

For Monday…

Right now, the GFS keeps the low pressure scooting out to our south with only very light showers Sunday evening and Monday in Philadelphia. (South Jersey and Delaware will have some rain Monday.)  Other models have a bit more rain for Monday here in Philadelphia.  Will have to wait and see.

SATURDAY FORECAST UPDATE

[su_note note_color=”#bceaed”]Some new information will be included in these forecasts going forward—

Forecast max temperatures will be based on the National Blend of Models (NBM) and will now include the “standard deviation” (“sd”) in ºF to show the amount of forecast uncertainty and model spread.

The specific run of the NBM used will include the latest EKDMOS forecast.  Perhaps the best of all worlds! [/su_note]

Last night’s models continue with forecast that light sprinkles and considerable cloudiness will linger through 12-2 PM and considerable low level cloudiness may linger until 3-5 PM.  Clearing northwest in the Allentown area earlier—

NAM NEST Forecast for 2 PM showing lingering showers and clearing near Allentown and areas north and west.

High temp 51.6º standard deviation (sd) 1.7º for Blue Bell