What is the difference between lava and magma?

Magma is the molten material beneath the Earth's crust.

It usually collects in a magma chamber beneath a volcano, and can then be injected into cracks in rocks or issue out of volcanoes in eruptions.

The temperature of magma ranges between 700 C and 1300 C.

When it reaches the surface and comes out of a volcano, magma becomes lava.

There are actually different kinds of lava depending on its thickness or viscosity.

The thinnest lava can flow downhill for many kilometers, creating a gentle slope.

The thicker lavas will just pile up around the volcanic vent and hardly flow at all.

The thickest lava doesn't even flow, it just plugs up the plumbing of a volcano and can be the cause of violent explosions.

So the different between magma and lava is location.

Magma is deep underground in chambers beneath volcanoes and lava is the stuff that comes out of volcanoes.

Interactive Radars

Regional Headlines

This Week's Circulars

Regional Radar Image

 The Accuweather Channel Forecast

Live Traffic Cameras

Cameras provided by PennDOT

Historical Averages

High Low
Current 49°F 24°F
Average 50°F 30°F
Record 72°F March 19, 1945 -1°F March 19, 1967