Yup, when the Flash Flood Warnings have the "considerable" threat or higher tag included, it then triggers the Wireless Emergency Alerts (WEA) and sends to smartphones.
That is just one warning. I will add that several warnings have verified with good lead times.
https://mesonet.agron.iastate.edu/cow/?syear=2026&smonth=9&sday=1&shour=12&eyear=2026&emonth=9&eday=2&ehour=12&wfo=PHI&hail=1.00&lsrbuffer=15&warnbuffer=0.01&wind=58&wtype[]=TO&wtype[]=SV<ype[]=T<ype[]=D<ype[]=H<ype[]=G
0.65 inches of rain. Had a decent period of wind gusts to around 40 mph at the end of the convection, essentially in the wake of it. Quite the wind shift with that as well and a temperature/dew point drop.
Seems like all the earlier convection and cloud cover kept the warm front farther south. This along with the cold front still well back to our west could be at least some of why the intensity of the convection (severe wise) has been tempered so far.