Thanks to itzmrdavis2u for helping me create the following flow to have Alexa speak a sensor changed alert on Alexa.
[{"id":"ceea0455.816a98","type":"change","z":"4c65e40e.fba3bc","name":"Garage Hum","rules":[{"t":"move","p":"payload","pt":"msg","to":"garagehum","tot":"flow"}],"action":"","property":"","from":"","to":"","reg":false,"x":270,"y":1114,"wires":[["4b60b21f.24fdcc"]]},{"id":"4b60b21f.24fdcc","type":"function","z":"4c65e40e.fba3bc","name":"Create Alexa Alert","func":"var name = \"Alert, \"\nvar device = \"media_player.kitchen\"\nvar message1 = \"Garage humidity is high,,, \"\nvar message2 = \"The garage temperature is,,, \"\nvar l_loc = flow.get('garagehum')\nvar c_loc = flow.get('garagetemp')\nvar final_msg = `${name}` + `${message1}` + `${l_loc}` + `${message2}` + `${c_loc}`\nvar payload = {\"domain\":\"notify\",\"service\":\"alexa_media\",\"data\":{\"message\":`${final_msg}`,\"data\":{\"type\":\"tts\"},\"target\":[`${device}`]}}\nmsg.payload = payload\nreturn msg;\n","outputs":1,"noerr":0,"x":530,"y":1040,"wires":[["f11000e9.44d8e"]]},{"id":"f11000e9.44d8e","type":"api-call-service","z":"4c65e40e.fba3bc","name":"","server":"901e0813.a14178","service_domain":"notify","service":"alexa_media","data":"{\"message\":\"Alet, Alex is moving!\",\"data\":{\"type\":\"tts\"},\"target\":[\"media_player.kitchen\"]}","mergecontext":"","output_location":"","output_location_type":"none","x":610,"y":1160,"wires":[[]]},{"id":"c92ddc2f.2b0cf","type":"server-state-changed","z":"4c65e40e.fba3bc","name":"Garage Humidity ","server":"901e0813.a14178","entityidfilter":"sensor.garage_humidity_2","entityidfiltertype":"exact","outputinitially":true,"state_type":"str","haltifstate":">71","halt_if_type":"num","halt_if_compare":"is","outputs":2,"output_only_on_state_change":true,"x":80,"y":1120,"wires":[["ceea0455.816a98"],[]]},{"id":"ee71d8bb.f01d28","type":"server-state-changed","z":"4c65e40e.fba3bc","name":"Garage Temperature","server":"901e0813.a14178","entityidfilter":"sensor.garage_temperature","entityidfiltertype":"exact","outputinitially":true,"state_type":"str","haltifstate":"","halt_if_type":"str","halt_if_compare":"is","outputs":1,"output_only_on_state_change":true,"x":90,"y":1180,"wires":[["ad5b575d.830f58"]]},{"id":"ad5b575d.830f58","type":"change","z":"4c65e40e.fba3bc","name":"Garage Temp","rules":[{"t":"move","p":"payload","pt":"msg","to":"garagetemp","tot":"flow"}],"action":"","property":"","from":"","to":"","reg":false,"x":300,"y":1180,"wires":[["4b60b21f.24fdcc"]]},{"id":"901e0813.a14178","type":"server","z":"","name":"Home Assistant rc","legacy":false,"hassio":true,"rejectUnauthorizedCerts":true,"ha_boolean":"y|yes|true|on|home|open"}]