Two weather anniversaries of note this weekend. First, today marks the first day of the year in which the average high reaches 80 degrees. The normal high remains at 80 or above until the end of August, peaking at 85 degrees for the last two weeks of July. We'll see July-like temperatures the next several days. Mostly sunny skies under a dome of high pressure will bring highs in the mid 80s today and tomorrow.

A very weak cold front will slowly settle in across the region late Saturday. The disturbance will give a slight edge to the forecast, bringing with it an iffy chance of showers or a thunderstorm on Sunday. Sunday's high depends on how overcast the sky gets. Lots of clouds mean low 80s but if they fail to materialize we could reach the upper 80s. Either way it will probably be pretty sticky outside.

The other anniversary of note is the New Brunswick tornado of 1835.

175 years ago tomorrow a tornado swooped down on New Brunswick, crossed the Raritan and plowed through Piscataway, killing five people and destroying all but two buildings in Piscataway. One of those killed was Thomas Harper, who, as legend has it, said he would not come in from the storm because he would not fear God until he felt His power. For his hubris Mr. Harper was promptly struck by a timber blown off a church and killed.

Scientifically the storm was very interesting for the time. Debris from the storm landed in Manhattan. This storm is the ur-tornado for the myth that houses explode from a tornado's low pressure. Lots of people have died because of that myth. If a tornado is about to strike take cover, don't run around opening up windows to equalize pressure. The 1835 twister is also one of the first to provide evidence that tornadoes swirl on the ground rather than move in a straight line.