5-Day Forecast for Philadelphia, PA

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5-Day Forecast

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North America Current Weather Conditions - Infrared

This infrared image shows clouds and precipation across North America by displaying the relative warmth of objects. Colder objects are brighter and warmer objects are darker. Lower layers of clouds are generally warmer and are gray. Colder and higher clouds tops are highlighted in colors.

Infrared Weather Radar Map

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds ); brown indicates very little moisture present; black indicates no moisture.

North American Water Vapor Map

National Weather Conditions--Current

National Weather Map--Today

Todays National Weather Map

National Weather Forecast--Tomorrow

National Weather Map--Tomorrow

Tomorrows National Weather Map

National Weather Alerts and Warnings

National Weather Alerts and Warnings. Note that Coordinated Universal Time (UTC) is a 24-hour time standard, is determined using atomic clocks, and expresses the mean solar time at the Earth's prime meridian (zero degrees longitude) located near Greenwich, England. Time zones around the world are expressed as positive or negative offsets from UTC (Eastern Time is -4 hours and Pacific Time is -7 hours). UTC is also often casually interchanged with Greenwich Mean Time (GMT).

National Weather Alerts Map







Weather Topic: What are Hole Punch Clouds?

Home - Education - Cloud Types - Hole Punch Clouds

hole punch clouds Next Topic: Mammatus Clouds

A hole punch cloud is an unusual occurrence when a disk-shaped hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.

When part of the cloud forms ice crystals, water droplets in the surrounding area of the cloud evaporate. The effect of this process produces a large elliptical gap in the cloud. The hole punch cloud formation is rare, but it is not specific to any geographic area.

Other names which have been used to describe this phenomena include fallstreak hole, skypunch, and cloud hole.

Next Topic: Mammatus Clouds

Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

shelf clouds Next Topic: Wall Clouds

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Wall Clouds

This page shows the 5-day weather forecast for the following ZIP codes:
19019, 19092, 19093, 19101, 19102, 19103, 19104, 19105, 19106, 19107, 19108, 19109, 19110, 19111, 19112, 19113, 19114, 19115, 19116, 19118, 19119, 19120, 19121, 19122, 19123, 19124, 19125, 19126, 19127, 19128, 19129, 19130, 19131, 19132, 19133, 19134, 19135, 19136, 19137, 19138, 19139, 19140, 19141, 19142, 19143, 19144, 19145, 19146, 19147, 19148, 19149, 19150, 19151, 19152, 19153, 19154, 19155, 19160, 19161, 19170, 19171, 19172, 19173, 19175, 19176, 19178, 19179, 19181, 19182, 19183, 19184, 19185, 19188, 19190, 19191, 19192, 19195, 19196, 19197, 19244, 19255