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LJG

Coldest day coming 12/26 in SoCal

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BS Man about Palms

10:50 pm 37.0F out back, (84%rh), 38.8F out front and 46F in the "halogen heated greenhouse"! :) I wonder how many lights it would take to heat my whole yard? :floor:

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osideterry

38F at 10:50pm. No breeze, no condensation on the car windows. This will not be pretty.

Everything in pots and in the greenhouse is now in the garage. What's in the ground either survived Jan 07, or would have.

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DoomsDave
About7:30 p.m., local time and I just looked at the thermo in the coldest part of my back yard, and it's now 35.2 F, and the night's still very young.

It was 38.1 by my front door.

Me no likey this a one little bit, nuh-uh, no way Jose . . . . .

:(

Damn Dave! Good luck, bro. How far are you from Fullerton? [reporting 48F\ 8.8c & Anaheim 47.

48.8F\ 9.2c

Right next door to the Big F!

Upon arrival home from a wild night of well, never mind . . . .

The coldest was 32.8, not great, but not nearly the hammer that I feared.

Gonna check in the morning. . . .

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Shon

6:47 at lowest point in yard 32. Best part of yard 37. Palms in low part of front yard do not look happy.

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osideterry

34.2F at 6:50am. I was bracing for 29-30F. Yeah I'm relieved.

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doubravsky

looks like I only hit 31.... not too bad....

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osideterry

My remote thermometer is 12ft from my house on deck support. I'm sure it got a couple degrees colder than 34F out in the open.

post-662-1230390782_thumb.jpg

post-662-1230390793_thumb.jpg

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epicure3

Low temps of the morning hit 39.6F with not a palm frond blowing. I have a frost cover on a ylang yang tree I am growing. Under that baby it got down to 43.7F. That thing really works. Should be a warmer day, and, therefore, a warmer night.

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Kim

All these warnings concerned me, so around 9 p.m. I went out and wrestled the bottle palm into the garage. Dang that sucker is heavy! Tossing and turning, I got up at 3:00 a.m. and it was 40.5F, so I was able to sleep better after that. Ultimate low, 36.7, no visible frost, no ice in birdbath. Even now with the sun up, it is still cold, 39.7.

John, can you explain what your "frost cover" is? Special material? Thanks!

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BS Man about Palms

34.7F in back, 35.8F in front and the HHgreenhouse never dropped below 42F I think! :)

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epicure3
All these warnings concerned me, so around 9 p.m. I went out and wrestled the bottle palm into the garage. Dang that sucker is heavy! Tossing and turning, I got up at 3:00 a.m. and it was 40.5F, so I was able to sleep better after that. Ultimate low, 36.7, no visible frost, no ice in birdbath. Even now with the sun up, it is still cold, 39.7.

John, can you explain what your "frost cover" is? Special material? Thanks!

Hey Kim. I think the material is some sort of spunbonded (whatever that means) polyester. You can get them relatively cheaply online. I just put a couple out on some sensitive plants 2 days ago to see if there really was a difference in temps. The ylang ylang is very hard to grow here so I thought I would start with that one.

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happ

42F\ 5.5c on main thermometer & 39F\ 3.8c reading down the hill in lowest area. If was pretty windy until midnight then just light breeze. NWS readings were basically 40's over basin w/ some upper 30's. Even valley minimums were above freezing except in isolated calm locations. About the same in Orange & San Diego counties with bayside readings the warmest. So, essentially we dodged the bullet again :mrlooney:

Sunday morning could be cold again but likely well above freezing. Week ahead will be mild w/ seasonable temps.

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Don Little

At 4:30AM I got up and checked and it read 36 which is better than what I had feared it would get down to especially because at 10:30PM last night the temp was already down to 40.

Looks like Coronado is the place to be. Their low this year is only 46 and over the last week they have only seen 40's twice but other than that have been in the 50's at night.

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Jim in Los Altos

My low was 35F. I too thought it would be colder.

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paulgila

38F under canopy.coldest temp so far this winter.

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tropicalb

Got down to 41.4 at the lowest last nite in my small backyard greenhouse with this setup (greenhouse size is 11'x20'):

heater.jpg

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DoomsDave

After I checked my temps last night, I pedalled my fat [rear] on my bike down to Knott's Berry Farm, in Buena Park, about 9 miles away.

The schlep through the hills was cold, and of course I wasn't wearing gloves . . . . But, because there's no wind, and I guess I'm a Neanderthal somewhere, I didn't really feel that cold. That cold air filled my lungs like a pronouncement of doom.

Then, as soon as I left the hills around Rosecrans Avenue, it warmed up, dramatically. Doink! From the mid-30s to at least the mid-40s, F. I began to sweat under my layers of clothing as I pedalled furiously southward.

After pedalling home again at about midnight, I found a minimum temp of 32.8 F in the farthest reaches of my back-backyard. As indicated earlier, not as bad as I'd feared.

This morning, I armpit-scratched and shuffled out like a bear awakening from hibernation and found the following temps:

35.2 F by my front door;

33.9 up by the utility pole near the street;

36.1 in the upper backyard (this sensor was not on the ground like the rest); and

---- drum roll . . . . . . . .

32.0 in the back of the back yard, no palms damaged nearby, because the nearest palms are about 20 feet away.

I was almost going to PM Happ and bet some extremely valuable things that we'd have a nasty freeze last night, but I was wrong, and I'm glad.

Last night, I'd hauled the hyphorbes, grunting (me, not the palms) under the overhang, and put the tender Kevin Weaver acquisitions on a wagon and trundled them into the garage.

Everythting's fine, for now.

Whew!

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Shon

At least it was quick.54 by 8:30 and presently at 10:00 it is 63.

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osideterry

Dave, you are one-of-a-kind! :lol:

Shon, it didn't get above 40F at my place until almost 9am. Weird.

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LJG

37 in courtyard, 34 in back under canopy and as a test I put one reader out in open, full exposure. It said 28!. How is that possible? I hope it is broke. In fact I was surprised with 34 in back. I thought my microclimate was a little better then what Vista's predictions were.

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epicure3
After I checked my temps last night, I pedalled my fat [rear] on my bike down to Knott's Berry Farm, in Buena Park, about 9 miles away.

Oh, THAT was YOU?? Sorry about clipping you with my Ford Escape. That was a nice tuck 'n roll.

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happ

Dave, your bike ride reminded me of living in El Sereno & descending into the icebox of Huntington Drive & Eastern :lol: I'm glad you were wrong also but your earlier readings alarmed me until I checked other stations near you. Is your yard in a low area\ ravine?

What's funny is that on another site for weather nerds everybody in SoCal is all bummed out that it did not drop below freezing & a reputable meteorologist predicted downtown would hit 32F [i think the last time was in 1949]. Weather geeks wish so much for cold readings that they look everywhere for some frost :rolleyes:

What is uncanny about this waning cold spell is that several American Meteorologist Society members at our November meeting predicted a sunny normal winter with intrusions of very cold storms & near normal rainfall. I don't like the cold part!

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MattyB

Saturday 12-27-08:

Top of hill: 38.7F out in open, 43.5F under the Silver Oak Tree just 20 feet away.....canopy is amazing.

Bottom of canyon: bananas did not spot or freeze but there was a few small spots of wanna-be frost on some grass. I estimate it hit about 35F down there.

My parents house in Lemon Grove hit 37F under canopy.

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Dypsisdean
37 in courtyard, 34 in back under canopy and as a test I put one reader out in open, full exposure. It said 28!. How is that possible? I hope it is broke. In fact I was surprised with 34 in back. I thought my microclimate was a little better then what Vista's predictions were.

Len,

That is one of the reasons I stopped paying attention to temperatures and more attention to what palms/plants were surviving, and in what locations. If you take a thermometer and place it really out in the open, and tilt it, or lay it down somewhat to fully expose it to the sky and the cold descending air (like a palm leaf would be), you can really see how much colder it can be.

The locations people set up their thermometers are so varied that I place little worth in most readings unless given some detail, as you have. As you have illustrated --- on one relatively flat lot the low can vary by almost 10 degrees. If you only had one thermometer, and one one reading, what would we think your low was?

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freakypalmguy

I hit 31F under some canopy at the top of my property, so I figure It had to have hit 28F or so out in the open and maybe 26F or so at the bottom of my property. It was a long cold night, it stayed at or near freezing all night long. My B. alfreidii's are in an exposed area that probably saw 26F-27F. Come on babies, be strong.

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Hollywood Palms

41° at bottom of hill, 46° at a spot higher up my hill. Wind was consistent. No damage.

Pineapple Express-where's one when we need one?

Stay warm, Oceanside.

David

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DoomsDave
Dave, your bike ride reminded me of living in El Sereno & descending into the icebox of Huntington Drive & Eastern :lol: I'm glad you were wrong also but your earlier readings alarmed me until I checked other stations near you. Is your yard in a low area\ ravine?

What's funny is that on another site for weather nerds everybody in SoCal is all bummed out that it did not drop below freezing & a reputable meteorologist predicted downtown would hit 32F [i think the last time was in 1949]. Weather geeks wish so much for cold readings that they look everywhere for some frost :rolleyes:

What is uncanny about this waning cold spell is that several American Meteorologist Society members at our November meeting predicted a sunny normal winter with intrusions of very cold storms & near normal rainfall. I don't like the cold part!

During my time in El Screamo, I remember well the near-frigid conditions that prevailed along some of the streets, while my place on the hill was at least 15 degrees warmer. (Or at least felt that way.) In particular, I think Monterey Ave. got COLD sometimes.

I was also seriously alarmed at those first early readings! It was looking exactly like MLK Day Eve, 2007, when it got COLD immediately after the breeze died soon after sunset. If my memory serves, the reason for the last cold spell was a high-pressure system that muscled its way to us, then refused to leave. Last night, it was, well, just cold, from some cold air schlepping south from the north.

My garden is on a hill, but there's a much higher hill (a demi-mountain, really) behind it (to the north), plus a line of tree-shrubs on the lowest edge which, I'm sure, traps cold air.

Also, more important, there was no wind at my place. As soon as a breeze kicked up, the temps went up, too, and quite a bit at that. Which makes perfect sense. Buena Park always gets the Stan Anal Wind much worse than my place. Last night they were getting a good sea breeze, while we were becalmed as the Sargasso Sea. The whole City of La Habra was quite cold.

I'm not surprised that Fullerton was warmer, too: I pedalled through a small part of it, which was also getting the breeze.

This So-Cal weather is a complex thang, methinks . . . .

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LJG

Dean, this is why I *had* three readers. To get a good grasp of different parts of the garden. I think th third is broke because 28 would have been the lowest I hit in 2007. I just looked at some of my really tropical palms and there is very minor cold damage. Nothing major.

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elHoagie

I just got back from Colorado. My official low on Friday morning was just over 2C (36F), which is in an exposed spot that's probably the coldest on my property. This was the first (and only so far) time that it's dropped below 4C since I moved here in Feb 2007...

The only palms that show any stress are the three bottles I have out front, which have quite a few cold spots on the exposed leaves. The Cocos still looks perfect. Also, my hi/lo in my cold frame says it dropped to about 6C (43F) inside. The baby lipstick seedlings from seed I collected in Costa Rica were in the cold frame and are still alive, but maybe they'll be dead soon?

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avb

My high-low shows 34F for last night. It only went to 38F previously this season. I've got plastic bags over my most sensitive plants outside. Others have been moved indoors that are growing in pots. There was frost on cars in the street at 10:45 last night. This morning, cars were frosty, but no frost on lawns or frozen birdbaths.

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osideterry

Wet blanket time: Don't unwrap those palms.

Accuweather has me at 30F tonight, weather.com says 32F. On more night, then we get a break for a while.

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DoomsDave
I just got back from Colorado. My official low on Friday morning was just over 2C (36F), which is in an exposed spot that's probably the coldest on my property. This was the first (and only so far) time that it's dropped below 4C since I moved here in Feb 2007...

The only palms that show any stress are the three bottles I have out front, which have quite a few cold spots on the exposed leaves. The Cocos still looks perfect. Also, my hi/lo in my cold frame says it dropped to about 6C (43F) inside. The baby lipstick seedlings from seed I collected in Costa Rica were in the cold frame and are still alive, but maybe they'll be dead soon?

EEK!

In a ridgetop in El Screamo, that's saying something . .. .

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happ
I just got back from Colorado. My official low on Friday morning was just over 2C (36F), which is in an exposed spot that's probably the coldest on my property. This was the first (and only so far) time that it's dropped below 4C since I moved here in Feb 2007...

The only palms that show any stress are the three bottles I have out front, which have quite a few cold spots on the exposed leaves. The Cocos still looks perfect. Also, my hi/lo in my cold frame says it dropped to about 6C (43F) inside. The baby lipstick seedlings from seed I collected in Costa Rica were in the cold frame and are still alive, but maybe they'll be dead soon?

Hey Jack, welcome back to chilly California. Glad to hear cocos nucifera is doing well [even at 2C]. Normally, you seem to have the best winter minimums but l did record 39F in the low area down the hill otherwise 40F has been the coldest for 2008.

I haven't seen any damage, pe say but calyptronoma rivalis & satakentia are yellowing a bit & veitchia should start their winter decent soon.

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BS Man about Palms
Dean, this is why I *had* three readers. To get a good grasp of different parts of the garden. I think th third is broke because 28 would have been the lowest I hit in 2007. I just looked at some of my really tropical palms and there is very minor cold damage. Nothing major.

Dean and I talked about this some time back. Since I measure temps for a living, I pay close attention to variations and look for causes. First you have to eliminate variations in your equipment. If you have multiple sensors, they should all sit together inside for a day and read the same temp within a tenth or so. Then, thru stuff I read regarding "weather stations", etc. I found they should be 5 feet off the ground and protected from over head (and few other things mostly dealing with daytime readings). In short, they should almost be "in a big upside down bucket on a stick" in the open for the most accurate readings. My backyard temp sensor closely mimics this for overnight. Its 5 foot of the ground with a roughly a 8 inch wide plank covering it. The front sensor is covered right, but is only about 30 inches off the ground, So I suspect its its a little higher than I post, but thats close enough.

When I thought the differential was wrong, I swapped sensors and it stayed the same: backyard lower temp than front.

PS- to connect this with another thread. I'm sure this post as many of mine do is rife with punctuation and grammatical errors. Oh well. :unsure:

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