What does +TSRAGR BR represent when encoded for transmission in an observation?

The encoding "+TSRAGR BR" conveys specific weather phenomena in aviation weather reporting. The "+TS" indicates that there are significant thunderstorms occurring, which means there are intense thunderstorm activities. The "RA" signifies that rain is falling. The "GR" indicates that there is hail present; this typically accompanies severe thunderstorms. Finally, "BR" represents mist, which implies reduced visibility.

Together, this coding communicates that there are thunderstorms characterized by rain and hail, potentially impacting visibility due to mist. Thus, the combination of these elements effectively describes a scenario of thunderstorms with rain and potentially hail, making it appropriate to identify it as thunderstorms with rain.