When that happens it's a clear sign of impending doom for the water pump.
is it a "don't drive the jeep at all any more until pump is replaced" kind of impending doom?
mine started leaking recently.. mid dec after coolant flush (was probably dirt clogging the weep hole), then stopped until yesterday.. but feels leaking much more now , and seems only when engine is cold (overnight when parked).. looses about half what's supposed to be in the reservoir over night.. which I then refill.
it takes me about 2+ weeks to get the mopar from the US to Thailand.. and my jeep is my only way of transportation..
after reading your comment I'm now a bit worried that my pump will completely fail soon and I'm stranded on the roadside - or worse frying anything else.
I've only 40.000 miles on mine btw.. but still 2002.. I would have expected the pump to die of runtime not age.. but could have been running with water instead of proper coolant by prev owner.. when I flushed the system it seemed only rusty water.. which was also a reason for the complete flush.