2020 NorCal Fire Thread
#51
Senior Member
Join Date: Oct 2016
Location: San Mateo,Ca.
Posts: 4,002
Bikes: TRIMMED DOWN THE HERD
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 1097 Post(s)
Liked 952 Times
in
608 Posts
Yeah I've been switching off between AirNow and Purple.
I attempted my ride this morning leaving at my usual before 8 but halfway through my eyes started getting irritated. Plus I had a flat. Good thing my halfway point is only a few blocks from home so I decided to call it quits. Will attempt again tomorrow and hope it's better. It's like a crapshoot everyday.
I attempted my ride this morning leaving at my usual before 8 but halfway through my eyes started getting irritated. Plus I had a flat. Good thing my halfway point is only a few blocks from home so I decided to call it quits. Will attempt again tomorrow and hope it's better. It's like a crapshoot everyday.
#52
Klaatu..Verata..Necktie?
Join Date: May 2007
Location: SF Bay Area
Posts: 18,330
Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 10608 Post(s)
Liked 12,226 Times
in
6,267 Posts
Yeah I've been switching off between AirNow and Purple.
I attempted my ride this morning leaving at my usual before 8 but halfway through my eyes started getting irritated. Plus I had a flat. Good thing my halfway point is only a few blocks from home so I decided to call it quits. Will attempt again tomorrow and hope it's better. It's like a crapshoot everyday.
I attempted my ride this morning leaving at my usual before 8 but halfway through my eyes started getting irritated. Plus I had a flat. Good thing my halfway point is only a few blocks from home so I decided to call it quits. Will attempt again tomorrow and hope it's better. It's like a crapshoot everyday.
__________________
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
#53
Junior Member
#54
LR÷P=HR
Join Date: Sep 2019
Location: SF Bay Area
Posts: 2,234
Bikes: 1981 Holdsworth Special, 1993 C-dale MT3000 & 1996 F700CAD3, 2018 & 2019 Cervelo R3’s & 2022 R5, JustGo Runt, Ridley Oval, Kickr Bike 8-)
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 891 Post(s)
Liked 1,242 Times
in
718 Posts
You guys are more brave than I...
Nothing but indoors for me (East Bay). Visibility has been down to 1-2 hundred yards.
I inadvertently spec'ed an electrostatic air filter for my home A/C when installed. Best accidental purchase ever !
Barry
Nothing but indoors for me (East Bay). Visibility has been down to 1-2 hundred yards.
I inadvertently spec'ed an electrostatic air filter for my home A/C when installed. Best accidental purchase ever !
Barry
#55
Junior Member
That's really a fantastic accident. I'm an architect by trade and can't believe how many people don't realize the contaminants they're potentially bringing in by running their HVAC when conditions are severe. I don't have A/C and suffered a few days last week when it was hot and I couldn't open my windows. Just the constant re-circ of air purifiers...
#56
Klaatu..Verata..Necktie?
Join Date: May 2007
Location: SF Bay Area
Posts: 18,330
Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 10608 Post(s)
Liked 12,226 Times
in
6,267 Posts
This is right now. I've given up on morning rides, because it's been like this or worse every morning. But most afternoons, it clears out. You can see how San Mateo has the worst air on the Bay side of the Peninsula, and worst right where I'd be riding if I headed over to Canada Road.
Monday I had to take my son to his job in Menlo Park, then head from Menlo Park to Brisbane for my work. The absolute worst smoke, like "Pittsburgh Smoke Days" bad, was North of Edgewood and south of Burlingame.
__________________
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
#57
LR÷P=HR
Join Date: Sep 2019
Location: SF Bay Area
Posts: 2,234
Bikes: 1981 Holdsworth Special, 1993 C-dale MT3000 & 1996 F700CAD3, 2018 & 2019 Cervelo R3’s & 2022 R5, JustGo Runt, Ridley Oval, Kickr Bike 8-)
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 891 Post(s)
Liked 1,242 Times
in
718 Posts
That's really a fantastic accident. I'm an architect by trade and can't believe how many people don't realize the contaminants they're potentially bringing in by running their HVAC when conditions are severe. I don't have A/C and suffered a few days last week when it was hot and I couldn't open my windows. Just the constant re-circ of air purifiers...
And new Lungs are out of stock in most places.
Barry
BTW you can't install a high MERV filter if your system was not built to use one. It will damage your system!
#59
Junior Member
Likes For paloaltan:
#60
Klaatu..Verata..Necktie?
Join Date: May 2007
Location: SF Bay Area
Posts: 18,330
Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 10608 Post(s)
Liked 12,226 Times
in
6,267 Posts
I've given up on making assumptions about whether it will be okay to ride on a given day or time. I'm being opportunistic for now - yesterday afternoon, it cleared all the way to Woodside, so at 4 I stopped W'ing FH (Working From Home) and rode from home to the peak of Canada and back. I'm fortunate to have that flexibility.
The only problem is, when it's clear, it's also likely to be windy. Yesterday sure was!
The only problem is, when it's clear, it's also likely to be windy. Yesterday sure was!
__________________
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
#61
Klaatu..Verata..Necktie?
Join Date: May 2007
Location: SF Bay Area
Posts: 18,330
Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 10608 Post(s)
Liked 12,226 Times
in
6,267 Posts
This morning looks good most places.
__________________
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
#62
Senior Member
Join Date: Jan 2010
Location: Walnut Creek, CA
Posts: 2,669
Bikes: 2023 Canyon Aeoroad CF SL, 2015 Trek Emonda SLR, 2002 Litespeed Classic, 2005 Bianchi Pista, Some BikesDirect MTB I never ride.
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 649 Post(s)
Liked 139 Times
in
90 Posts
I've read about that LRAPA conversion, and not to disagree, but to me it doesn't really matter. I've used PA for several years, and never switched the conversion. Anything over 150 without a conversion is bad for me, personally speaking. At about 150 is when I can really smell the smoke in the air, and see the poor air quality. But with that conversion factor, it may take it down to a much lower number. Maybe that means my lungs can't take as much crap as others', so when I see 150 or more (with no conversion), I will either stay in, or go with an N95.
#63
Senior Member
Join Date: Jan 2010
Location: Walnut Creek, CA
Posts: 2,669
Bikes: 2023 Canyon Aeoroad CF SL, 2015 Trek Emonda SLR, 2002 Litespeed Classic, 2005 Bianchi Pista, Some BikesDirect MTB I never ride.
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 649 Post(s)
Liked 139 Times
in
90 Posts
Looks like (for now), the amount of smoke in many parts of the Bay Area has decreased. Yesterday was nice for most of the day, there was a weird few hours around noon when it got bad, but before and after that, it was halfway decent. Today has been even better. I can see smoke in the air in the distance, but locally in the East Bay at least, it's been very much improved! Maybe this has to do with the return of the breeze and the marine layer, but hopefully the high humidity levels is helping greatly with the fire efforts.
Likes For cthenn:
#64
Klaatu..Verata..Necktie?
Join Date: May 2007
Location: SF Bay Area
Posts: 18,330
Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 10608 Post(s)
Liked 12,226 Times
in
6,267 Posts
Yeah, you gotta listen to your body and be guided by it. LRAPA conversion just aligns Purple Air with AirNow and other sources, and in the end, regarding the AQI and the colors....
__________________
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
#65
Senior Member
Join Date: Jan 2010
Location: Walnut Creek, CA
Posts: 2,669
Bikes: 2023 Canyon Aeoroad CF SL, 2015 Trek Emonda SLR, 2002 Litespeed Classic, 2005 Bianchi Pista, Some BikesDirect MTB I never ride.
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 649 Post(s)
Liked 139 Times
in
90 Posts
It is interesting that the conversion takes the number down quite a bit, and that is what Airnow is using. I guess what I assumed was unhealthy for most people is a much higher threshold than what I had thought for so long. I guess our bodies are more able to withstand smoke and ash particle-filled air than I thought! Although I imagine this assumes we aren't doing extremely strenuous exercise like cycling, especially a hard effort. That really makes you breathe it in really deep, and that "healthy" threshold is probably a lower number...
#66
Klaatu..Verata..Necktie?
Join Date: May 2007
Location: SF Bay Area
Posts: 18,330
Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 10608 Post(s)
Liked 12,226 Times
in
6,267 Posts
It is interesting that the conversion takes the number down quite a bit, and that is what Airnow is using. I guess what I assumed was unhealthy for most people is a much higher threshold than what I had thought for so long. I guess our bodies are more able to withstand smoke and ash particle-filled air than I thought! Although I imagine this assumes we aren't doing extremely strenuous exercise like cycling, especially a hard effort. That really makes you breathe it in really deep, and that "healthy" threshold is probably a lower number...
Dad died just last year at 100 1/2 years old, so clearly it's possible to survive smoke like this But I do wonder how many DIDN'T survive, with healthcare being a lot less effective back then. Also, how many would have lived longer without having been exposed to that stuff.
__________________
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
#67
Senior Member
Join Date: Mar 2007
Location: SF Bay Area, East bay
Posts: 7,752
Bikes: Miyata 618 GT, Marinoni, Kestral 200 2002 Trek 5200, KHS Flite, Koga Miyata, Schwinn Spitfire 5, Mondia Special, Univega Alpina, Miyata team Ti, Santa Cruz Highball
Mentioned: 54 Post(s)
Tagged: 0 Thread(s)
Quoted: 1635 Post(s)
Liked 2,725 Times
in
1,266 Posts
I've got a neighbor who won't come out for anything when the smoke settles in. This is the same guy who goes snow camping in the middle of February and burns a cord of wood in three days. Really, it depends on how your immune system reacts to the smoke.
#68
Senior Member
Join Date: Oct 2016
Location: San Mateo,Ca.
Posts: 4,002
Bikes: TRIMMED DOWN THE HERD
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 1097 Post(s)
Liked 952 Times
in
608 Posts
Well looks like today isn't going to clear up anytime soon. It started last night after dinner. I thought by the time I woke up we'd be good again. This is the worse I've seen in the area these past two weeks. Usually we have some clearing. Stay safe,all!
#69
Klaatu..Verata..Necktie?
Join Date: May 2007
Location: SF Bay Area
Posts: 18,330
Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 10608 Post(s)
Liked 12,226 Times
in
6,267 Posts
I was watching all afternoon, having decided I'd go ahead if it was <100 all the way from San Mateo to Woodside. It got better, till there was only one sensor registering >100, but it didn't seem like it wanted to go much lower.
I ended up riding in the garage, but I used Youtube videos of a ride on Canada, and Old La Honda to keep me going. It was better than nothing!
__________________
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
Likes For genejockey:
#70
Junior Member
I don't know, I'm honestly a bit skeptical about Purple Air's LRAPA conversion. There are times when it seems to paint a much rosier picture than what I'm actually smelling and seeing when I step outside, and in those cases the "None" option seems more accurate.
There are times when there's a discrepancy where the "None" option shows sensors in my area ranging from, say, the 120s to 140s (i.e., unhealthy for sensitive people), but clicking LRAPA brings everything down to the 70s, 80s, or 90s, and yet the air is still objectively pretty darn smokey when you're out in it.
I'm obviously not an expert, so maybe there is a certain amount of smoke in the air that is totally fine for healthy people to inhale? However, I recall reading a quote a few years ago from an expert on this saying that if you're smelling smoke when you stick your head outside, that means there's enough of it in the air to be bad for anyone, regardless of the air quality index levels.
So, basically, I'm not sure how comfortable I am with riding when Purple Air's "None" levels are at about 110 or more, as that's about where I usually start smelling smoke.
There are times when there's a discrepancy where the "None" option shows sensors in my area ranging from, say, the 120s to 140s (i.e., unhealthy for sensitive people), but clicking LRAPA brings everything down to the 70s, 80s, or 90s, and yet the air is still objectively pretty darn smokey when you're out in it.
I'm obviously not an expert, so maybe there is a certain amount of smoke in the air that is totally fine for healthy people to inhale? However, I recall reading a quote a few years ago from an expert on this saying that if you're smelling smoke when you stick your head outside, that means there's enough of it in the air to be bad for anyone, regardless of the air quality index levels.
So, basically, I'm not sure how comfortable I am with riding when Purple Air's "None" levels are at about 110 or more, as that's about where I usually start smelling smoke.
Last edited by Pavol Stromcek; 08-31-20 at 02:47 PM.
Likes For Pavol Stromcek:
#71
Klaatu..Verata..Necktie?
Join Date: May 2007
Location: SF Bay Area
Posts: 18,330
Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 10608 Post(s)
Liked 12,226 Times
in
6,267 Posts
Remember, AQI is a unitless number, and the point of the conversion is that PurpleAir's inexpensive sensors apparently tend to give a higher reading on wildfire smoke than more expensive ones used by the EPA, and LRAPA just brings them more into alignment. It doesn't change the air.
I've found PurpleAir to be fantastically useful this month! The large sensor network lets you see developing trends, like seeing the numbers rising in the San Mateo Highlands while it was still nice and clear in the flats. I knew what was coming. Same thing happens when it clears - I can see it coming. "AirNow" is just too slow to see the short term trends, and if you plan based on it, you'll either find yourself riding in smoke, or huddled inside when it's nice and clear outside.
I've found PurpleAir to be fantastically useful this month! The large sensor network lets you see developing trends, like seeing the numbers rising in the San Mateo Highlands while it was still nice and clear in the flats. I knew what was coming. Same thing happens when it clears - I can see it coming. "AirNow" is just too slow to see the short term trends, and if you plan based on it, you'll either find yourself riding in smoke, or huddled inside when it's nice and clear outside.
__________________
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
#72
Junior Member
Remember, AQI is a unitless number, and the point of the conversion is that PurpleAir's inexpensive sensors apparently tend to give a higher reading on wildfire smoke than more expensive ones used by the EPA, and LRAPA just brings them more into alignment. It doesn't change the air.
I've found PurpleAir to be fantastically useful this month! The large sensor network lets you see developing trends, like seeing the numbers rising in the San Mateo Highlands while it was still nice and clear in the flats. I knew what was coming. Same thing happens when it clears - I can see it coming. "AirNow" is just too slow to see the short term trends, and if you plan based on it, you'll either find yourself riding in smoke, or huddled inside when it's nice and clear outside.
I've found PurpleAir to be fantastically useful this month! The large sensor network lets you see developing trends, like seeing the numbers rising in the San Mateo Highlands while it was still nice and clear in the flats. I knew what was coming. Same thing happens when it clears - I can see it coming. "AirNow" is just too slow to see the short term trends, and if you plan based on it, you'll either find yourself riding in smoke, or huddled inside when it's nice and clear outside.
Likes For Pavol Stromcek:
#73
Occam's Rotor
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times
in
1,164 Posts
The smoke in Santa Cruz seems to be better, according to my nose and Purple Air, than in much of the Bay Area. I think I am going to try to ride in and see what is going on with my house. That will be about 2000 ft net of climbing in smoke, which might be kind of stupid, but I can't get past the road blocks in my car.
Last edited by Cyclist0108; 09-01-20 at 10:24 AM.
Likes For Cyclist0108:
#74
Klaatu..Verata..Necktie?
Join Date: May 2007
Location: SF Bay Area
Posts: 18,330
Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 10608 Post(s)
Liked 12,226 Times
in
6,267 Posts
The smoke in Santa Cruz seems to be better, according to my nose and Purple Air, than in much of the Bay Area. I think I am going to try to ride in and see what is going on with my house. That will be about 2000 ft net of climbing in smoke, which might be kind of stupid, but I can't get past the road blocks in my car.
__________________
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
Likes For genejockey:
#75
Klaatu..Verata..Necktie?
Join Date: May 2007
Location: SF Bay Area
Posts: 18,330
Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 10608 Post(s)
Liked 12,226 Times
in
6,267 Posts
Totally agree - AirNow is useless because of the one- to two-hour lag time, and Purple Air is infinitely more useful to us cyclists because it gives you localized and regularly updated readings for whatever area you plan to ride in (except for super remote areas). I'm just skeptical of the LRAPA conversion because I've had too many instances where the LRAPA numbers look pretty good, but then I step outside and I smell and see smoke.
Right now, the two closest sensors (LRAPA adjusted) are saying '102', AND I can see haze between me and the pine tree across the creek and two houses down the street. Also, the numbers for the Highlands are about the same as here and everything's been the same for a couple hours. I would walk the dog now, but I wouldn't ride.
I guess I'm gonna look into Zwift. I had a really nice riding season going back in 2018 when the Camp Fire blew up and we had 2 weeks of red-purple air everywhere, and then 2 months of rain. I don't want to have this kill my momentum.
__________________
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles
Likes For genejockey: