Re: McGee Creek and Convict Creek headwaters
Posted: Sun Jul 12, 2015 3:35 pm
Given the drought, most remaining large visible snowfields may be hard glacial ice impossible to cross without sharp pointy ice crampons. Cloverleaf takes effort to reach thus has few visitors.
On Saturday July 4, our second day out from the Coldwater Creek Trailhead, we were on the other side of the ridge at Purple Lake from where you were at at Constance. So enjoyed the same stormy afternoon haha. Three of us just arrived at the lake as the first afternoon storm with heavy rain began that had us stumbling through piles of avalanche debris trees then a very soggy seep meadow into a tall lodgepole pine grove. There with gear under rain covers we hunkered down below densest needled branches to escape the rain. After that storm left, we set up our tents and gear but then a severe lightning and thunder storm moved in over the near ridge from the south and dropped more heavy rain with some hail. Though the lightning during that storm was intense, we were in one of the safest locations in the area.
We had t-storms and rain 7 straight days before walking out on day 8 Saturday July 11 with just minor cumulus build ups. The worst storm by far was in the wee hours of Thursday that left an inch of grape to cherry sized hail across landscapes and was followed by heavy bouts of rain and sleety snow that continued into the afternoon. Lightning at peak was occurring every few seconds. The large hail pounding my UL1 got gear inside my tent wet because the temperture was in the 30s and considerable condensation had formed overnight before the storm on the underside of my rain fly. The intense hail knocked it all down through the netting of the inner tent as a constant mist.
I analyzed the storm this morning and will have a forthcoming thread about it. The Thursday storm was not a Mexican monsoon event but rather due to the jetstream dipping south and picking up and intensifying what had been a weak low pressure trough west of San Diego. Because the jetstream brought cold air in from the Gulf of Alaska, it snowed down to about 10000 feet. One often reads advice about how Sierra Nevada thunderstorms are short ho hum events and that tends to encourage mountain visitors to have mediocre storm coping gear. We saw lots of thru hikers on the PCT/JMT that looked like they were going to the beach and probably learned a miserable lesson.
David
On Saturday July 4, our second day out from the Coldwater Creek Trailhead, we were on the other side of the ridge at Purple Lake from where you were at at Constance. So enjoyed the same stormy afternoon haha. Three of us just arrived at the lake as the first afternoon storm with heavy rain began that had us stumbling through piles of avalanche debris trees then a very soggy seep meadow into a tall lodgepole pine grove. There with gear under rain covers we hunkered down below densest needled branches to escape the rain. After that storm left, we set up our tents and gear but then a severe lightning and thunder storm moved in over the near ridge from the south and dropped more heavy rain with some hail. Though the lightning during that storm was intense, we were in one of the safest locations in the area.
We had t-storms and rain 7 straight days before walking out on day 8 Saturday July 11 with just minor cumulus build ups. The worst storm by far was in the wee hours of Thursday that left an inch of grape to cherry sized hail across landscapes and was followed by heavy bouts of rain and sleety snow that continued into the afternoon. Lightning at peak was occurring every few seconds. The large hail pounding my UL1 got gear inside my tent wet because the temperture was in the 30s and considerable condensation had formed overnight before the storm on the underside of my rain fly. The intense hail knocked it all down through the netting of the inner tent as a constant mist.
I analyzed the storm this morning and will have a forthcoming thread about it. The Thursday storm was not a Mexican monsoon event but rather due to the jetstream dipping south and picking up and intensifying what had been a weak low pressure trough west of San Diego. Because the jetstream brought cold air in from the Gulf of Alaska, it snowed down to about 10000 feet. One often reads advice about how Sierra Nevada thunderstorms are short ho hum events and that tends to encourage mountain visitors to have mediocre storm coping gear. We saw lots of thru hikers on the PCT/JMT that looked like they were going to the beach and probably learned a miserable lesson.
David