Arrived at the trailhead for Entiat River trail (#1400) about noon on Friday - third car in the lot. Shortly after exiting the car, we heard a sound that would be with us the entire trip - the whine of mosquitoes. Started up the trail in the warm weather, bathed in our favorite form of DEET. The trees provided a nice shaded hike most of the way. No problem, other than bugs, to the junction with Cow Cr Trail (#1404). As noted at the trailhead, the bridge over the Entiat is damaged, but quite usable for hikers (handrails have been severely damaged). We continued on to the south end of Myrtle Lake, where we camped at the farther of the two luxurious campsites (large rock fire rings and picnic tables at each). We set up the tent, and then put on our raincoats and pants for bug protection, even though it must have been about 80deg.
Tried fishing, but no success. Just before heading back to the campsite for dinner, we heard a large chunk of rotten tree fall onto the trail above us - glad we weren't hiking by at the time. During dinner 3 deer wandered through our camp, chomping on mushrooms and other plants. Finally, after sunset, the mosquitoes subsided to the point that the repellant worked, but then we were ready to retire. We decided to leave the rainfly off our 4 season tent, since it was so warm.
About 11:00pm we were awakened by lightning flashes and thunder. So, hopped out of the tent and put on the rainfly, just in case this was more than ""dry lightning"". The thunderstorm continued, and about 12:30am, the skies let loose in a downpour of rain and hail. This lasted about 30 minutes, and then repeated at 3:00am. To say the least we did not get much sleep that night.
During breakfast the next morning 3 other deer wandered through camp. We packed the wet tent and started up the Cow Cr Meadows trail (#1404) toward 5th of July Mt. This trail has not been logged out beyond the wilderness boundary. We crossed ~20 logs over the trail, including 5 larger ones. Ran into snow patches about 5000ft which became 60% snow by the time we reached Cow Cr. The two log crossing was under water, since the snowmelt was ongoing. After exploring various options for crossing (slick bark-less sloped logs, submerged rock hop, we opted for the barefoot mid-thigh ford, from a snowbank, across a sandy portion of the stream, then on to grass. Very cold feet and legs.
The steep climb above Cow Cr Meadows provided ever better views of the basin, and no snow, until about 6000ft. As we approached the junction with Garland Pk trail (#1408), we noticed large clouds looming over 5th of July Mt. In addition, Cow Cr Pass had a large cornice on the east side. To top it off were we fairly tired from the climb, so we were debating going direct to Larch Lakes, and eliminating the side trip to 5th of July Mt. When the thunder started, that cinched it. We decided to beat-feet to upper Larch Lk and get off the ridge. As we were hiking, the ""flash-boom"" timing was decreasing from the initial 13 seconds to about 3 seconds when we finally dropped off the ridge into the Larch Lk basin. About 5 logs over the trail on this section.
About 300ft above the lake, the rain, hail, and wind started. We continued descending in the storm, through the snow patches to the lake and then a brisk hike across the open meadow to the campsites (probably not a smart thing to be walking through a boggy meadow in the thunderstorm!). We set up our tent, covered the packs, and climbed inside to wait out the storm. About 1.5 hours later the rain finally stopped and we came out to survey the area. There is still about 30% snowcover in the upper lake basin, and the lake is about 1ft deeper than normal. The rain kept the mosquitoes down for a couple of hours, but after dinner, they were out again!
We had a good night's sleep, much cooler than the night before. The snow had hardened significantly by morning, but it had not dropped below freezing. We started out at 8:30am, to get home at a reasonable time. By 9:00am, the mosquitoes were out again, so we kept moving. Lower Larch Lake had a few fish surface feeding, but not many. During the descent, had a number of beautiful views of the Larch Cr Falls in the morning sun. Reached the Hiker Only trail that parallels the Entiat River (~3800ft), avoiding the Entiat Ford or logjam crossing. The single log crossings of Larch Cr and Cow Cr were uneventful.
During the hike out along the Entiat River Trail, we saw 3 horses, 5 hikers, and 3 mtn bikers. No motorcycles, and lots of mosquitoes.