Temperature Occurrences
The following is a map of Pennsylvania with each county outlined. This map is a visual representation of the number of years between occurrences of temperatures greater than 100 degrees. Along the bottom of the map there is a legend that describes what value each color represents, each color is an increment of 10.
The following is a map of Pennsylvania with each county outlined. This map is a visual representation of the number of years between occurrences of temperatures greater than 95 degrees. Along the bottom of the map there is a legend that describes what value each color represents, each color is an increment of 0.5.
The following is a map of Pennsylvania with each county outlined. This map is a visual representation of the number of years between occurrences of temperatures greater than 90 degrees. Along the bottom of the map there is a legend that describes what value each color represents, each color is an increment of 2.5.
The following is a map of Pennsylvania with each county outlined. This map is a visual representation of the number of years between occurrences of temperatures less than 0 degrees. Along the bottom of the map there is a legend that describes what value each color represents, each color is an increment of 1.
The following is a map of Pennsylvania with each county outlined. This map is a visual representation of the number of years between occurrences of temperatures less than -10 degrees. Along the bottom of the map there is a legend that describes what value each color represents, each color is an increment of 5.
The following is a map of Pennsylvania with each county outlined. This map is a visual representation of the number of years between occurrences of temperatures less than -20 degrees. Along the bottom of the map there is a legend that describes what value each color represents, each color is an increment of 10.
Hazards Vulnerability Assessment
Data Analysis
Pennsylvania encompasses a large area of land which can experience many different temperature extremes. The following six maps display the probability of extreme maximum and minimum temperatures for the state using data from 30 recording stations. Three maps (frequency above 90 and 95, and frequency below 0) are plotted using the frequency of occurrence of the extreme per year as the data points. The remaining three maps (frequency above 100 and frequency below –10 and –20) are plotted by the period of years between each occurrence of the extreme.
This data was collected from the Pennsylvania State Climatologist Office website. Every station had at least 30 years of data recorded with the majority having over 80 years. The included table represents the name of the station, years of data, and the frequency of each extreme temperature event occurring during a year. Determining the number of total extreme events over the entire period of record and then dividing that number by the total number of years calculated these values.