A record of a front system passing by

1. Theory

Figure 1 is the summary of the Bergen school cyclone model, which shows three stages of cyclone development. Figure 2 shows the vertical cross section of  an open wave cyclone. 

Figure 1

Figure 2

2. Record

January15th, 11UTC: cirrus clouds → warm front is coming 

January15th, 12UTC, cirrostratus clouds

January16th, 09UTC, drizzles → We were already in the warm air

January16th, 16UTC, cumulus clouds

January16th, 23UTC, stratus clouds → cold front just passed

January17th, 09UTC, clear sky

3. Additional materials at selected time

15th, January, 12UTC:

We can find the slope of warm front is very small from the satellite image below. 

16th, January, 18UTC:

Surface temperature change at Uppsala: