I agree with Marty - at least around here (NWS Upton) you'll get " URBAN FLOOD ADVISORY" (aka there is 2" of water on the road) "Dense fog warning" (gee, it's under 1/2 mile)

.WIND ADVISORY

Then a couple of hours later (again - tripping a warning)
.WIND ADVISORY IS CANCELLED

For instance - that Urban Flood Advisory? They issued it the other day at 7:02ap to last to 10am
at 8:00 they issued it again - to last till 10:00am
and again at 9:00
and then at 9:20ish, they issued it AGAIN, but canceling it

I don't need to be warned every hour or two for the same warning - really - I understood the first time you told me

The BIG problem is the Pager service I use (they send it to my cell phone) doesn't allow you to tailor what you get - you get them all - or nothing