Table 1.

Emergent themes and their frequencies

	Emergent themes	Frequency
1	Perceptions of alert and warning systems	20
2	The role of message characteristic in the decision to take protective action	18
3	Barriers and strategies for forecasting and communicating risk	10
4	Response to hazards, threats, false alarms	10
5	Influence of warning information on behavior	7
6	Predictors, preferences, and characteristics of warning information sources	7
7	Tornado warning reception, comprehension, and response	7
8	Channel preference for information	6
9	Evacuation information, awareness, preparedness, and departure	6
10	Predictors of alert and warning systems use	5
11	Warning and alert at night versus during the day	2
12	Hazard risk, exposure, and vulnerability	2
	Total	100