It's that time of the year when the first killing frost/freeze hits central Pennsylvania. Typically, mid-October is when the first killing frost hits although light frosts can occur as early as mid-September.
Some areas of central Pennsylvania did have some frost in late September, but the duration of the frost and the extent of the frost did not kill most garden plants.
The cold air coming for Saturday morning will allow for a longer-duration frost and freeze and will also allow temperatures outside of the towns to dip will into the 20s, if not the teens.
The high pressure system bringing the cold weather originated in northern Canada and will park itself right over central Pennsylvania by Saturday morning. That will promote clear skies and calm winds which is the best setup for what meteorologist call "radiational cooling."
With the cold weather coming, you still have time to protect your plants. Covering them with buckets or blankets will prevent the frost from forming on the plants and may allow your plants to continue until the next threat of frost and freeze comes along.
Sunny skies and very warm conditions will persist through the week in the Dallas-Fort Worth Metroplex.
Tropical Storm Guillermo will continue its path toward Hawaii in the coming days bringing large swells and enhanced rainfall to the islands.
A cold front will usher in cooler air into the Northeast this week but not before sending severe storms through the region.
Building heat across Europe this week will approach monthly and all-time record high levels in several cities.
Unsettled weather responsible for flooding downpours in Florida last week will gradually lessen over the next several days.
Public officials are in the process of eliminating Naegleria Fowleri, a brain-eating amoeba, from two drinking water supplies in Louisiana.
Boise, ID (2000)
2 small tornadoes passed just south of the airport.
Waterville, NY (2007)
Thunderstorm winds blew large, heavy and bolted down sheds 500 feet onto the roadway.
Philadelphia, PA/ Camden, NJ (1885)
Tornado struck, cutting an 8 mile path, crossed river near present day Walt Whitman Bridge; 5 killed, $500,000 damage. Total of 13 tornadoes within 100 miles of Philadelphia. Street flooding and flooding of homes.