"GM" wrote in message ...
"Benjamin Turek" wrote in
news:Re0rg.3323$Og3.2565@trnddc06:

true, but it should provide ample opportunity to find a proper
match. could anyone tell me what this hatch is. this radar image
is from LaCrosse, WI on June 30. i've seen some decent hatches,
but nothing that would come close to this.

It would have to be a White Fly hatch. The time of day is right and the
overwhelming number correlate. Anyone know for sure?

Hexagenia limbata sounds like a better bet to me. I've never seen them that
thick myself, but there are persistent stories of hatches so heavy that
snowplows or fire hoses are required to remove them from roads. Backwaters
on the Mississippi River provide plenty of ideal habitat (the nymphs burrow
in silt), the time of year is right, and the time of day is right.

Wolfgang