Greg in Lake Forest CA Posted November 30, 2006 Report Share Posted November 30, 2006 Shocked, my low temps on several thermos were 33F and 35F, and had a 1/8 inch thick layer of ice in one pool of water. Hope this is not a harbinger of the upcoming winter. Brrrrr.... Greg in Lake Forest, CA Zone 10 Occasional frost Link to comment Share on other sites More sharing options...
MattyB Posted November 30, 2006 Report Share Posted November 30, 2006 Spock, I do belive you're right about the sensor being exposed to the sky. That's why I wanted to specify, "out in the open". If I put a paper plate over the sensor it dosen't read quite as cold but anything planted out in the open dosen't have a paper plate over it so I don't bother. And yes, I am a crazy adrenaline junky! Sometimes I run outside at night naked in the cold to check my thermometer. I'm loco. Matt Bradford "Manambe Lavaka" Spring Valley, CA (8.5 miles inland from San Diego Bay) 10B on the hill (635 ft. elevation) 9B in the canyon (520 ft. elevation) Link to comment Share on other sites More sharing options...
Hollywood Palms Posted November 30, 2006 Report Share Posted November 30, 2006 Okay... In cold spot where sensor is 39.7 (north side of house, with canyon air hitting from upslope) Out in the open and in the front of the canyon (cold blocked by house) we had 45. My Alpinia purpurata was still alive.... Hollywood Hills West, Los Angeles, CA USA Southwest facing canyon | Altitude 600 - 775 feet | Decomposing graniteUSDA Zone 10b | AHS 6 | Sunset Zone 23 | Köppen Csb | No frost or freezesAverage Low 49 F°/9.4 C° | Average High 79 F°/28.8 C° | Average Rainfall 20"/50.8 cm Link to comment Share on other sites More sharing options...
spockvr6 Posted December 1, 2006 Report Share Posted December 1, 2006 Holy mackerel...check out this temp map as of 1015PM eastern tonight...... There is a 77F differential between the warm and cold spots and its warmer in northern Maine than in southern Texas! Larry Palm Harbor, FL 10a / Ft Myers, FL 10b Link to comment Share on other sites More sharing options...
happ Posted December 1, 2006 Report Share Posted December 1, 2006 Fantastic graphic showing the advance of the arctic air mass swallowing up the nation Will be another cold night but warmer into the weekend especially maximums. Cold in Cali today: San Francisco : 57/44 LA : 68/46 San Diego : 66/46 But much colder minimums inland & in calm regions. Burbank : 36 Escondido : 38 El Cajon : 35 Deserts: Palm Springs : 38 Phoenix : 32 Las Vegas : 28 Death Valley : 38 Los Angeles/Pasadena 34° 10' N 118° 18' W Elevation: 910'/278m January Average Hi/Lo: 69F/50F July Average Hi/Lo: 88F/66F Average Rainfall: 19"/48cm USDA 11/Sunset 23 http://cdec.water.ca.gov/cgi-progs/queryF?MTW Link to comment Share on other sites More sharing options...
bgl Posted December 1, 2006 Report Share Posted December 1, 2006 Larry, GREAT map!! Time for some more palm photos from Maine! Bo-Göran Leilani Estates, 25 mls/40 km south of Hilo, Big Island of Hawai'i. Elevation 880 ft/270 m. Average rainfall 140 inches/3550 mm Link to comment Share on other sites More sharing options...
spockvr6 Posted December 1, 2006 Report Share Posted December 1, 2006 (bgl @ Dec. 01 2006,01:02)QUOTETime for some more palm photos from Maine! Bo-Göran Bo- I fear that any photos taken this time of year would be of merely brown withered messes seeing as how theyve had....oh...25 or 30 freezes already so far this fall Larry Palm Harbor, FL 10a / Ft Myers, FL 10b Link to comment Share on other sites More sharing options...
BS Man about Palms Posted December 1, 2006 Report Share Posted December 1, 2006 (blonddude @ Nov. 30 2006,11:20)QUOTEOkay... In cold spot where sensor is 39.7 (north side of house, with canyon air hitting from upslope) Out in the open and in the front of the canyon (cold blocked by house) we had 45. My Alpinia purpurata was still alive.... This brings up a good point that I was talking with Shon about yesterday. How many folks here have there sensors or ? in the coldest spot in their yard versus just "outside". I decided I'd rather know my absolute coldest even if it meant losing the "Zone 10 awards...". Because I"LL know there rest of my yard is WARMER than the temp I stated. Where are your sensors? Zone 10a at best after 2007 AND 2013, on SW facing hill, 1 1/2 miles from coast in Oceanside, CA. 30-98 degrees, and 45-80deg. about 95% of the time. "The great workman of nature is time." , "Genius is nothing but a great aptitude for patience." -George-Louis Leclerc de Buffon- I do some experiments and learning in my garden with palms so you don't have to experience the pain! Look at my old threads to find various observations and tips! Link to comment Share on other sites More sharing options...
Kim Posted December 1, 2006 Report Share Posted December 1, 2006 (BS @ Man about Palms,Dec. 01 2006,09:27)QUOTEThis brings up a good point that I was talking with Shon about yesterday. How many folks here have there sensors or ? in the coldest spot in their yard versus just "outside". I decided I'd rather know my absolute coldest even if it meant losing the "Zone 10 awards...". Because I"LL know there rest of my yard is WARMER than the temp I stated. Where are your sensors? My sensor is maybe 40" above the ground on my back fence, east exposure. (Not under cover and lights with the Carpoxylon, but about 5 feet away.) Um, so, how do you know where the coldest part of the yard is? Just for kicks I did a test this morning. The sensor location was 40, under my patio cover attached to the house it was 46. Kim Cyr Between the beach and the bays, Point Loma, San Diego, California USA and on a 300 year-old lava flow, Pahoa, Hawaii, 1/4 mile from the 2018 flow All characters in this work are fictitious. Any resemblance to real persons, living or dead, is purely coincidental. Link to comment Share on other sites More sharing options...
happ Posted December 1, 2006 Report Share Posted December 1, 2006 One senser hangs 10 feet above deck on north side of house. Another is at 5' on south-facing porch at the top of the hill. Both reflect descending night air. Cold air is quickly mixing out Minimum : 50F Los Angeles/Pasadena 34° 10' N 118° 18' W Elevation: 910'/278m January Average Hi/Lo: 69F/50F July Average Hi/Lo: 88F/66F Average Rainfall: 19"/48cm USDA 11/Sunset 23 http://cdec.water.ca.gov/cgi-progs/queryF?MTW Link to comment Share on other sites More sharing options...
spockvr6 Posted December 1, 2006 Report Share Posted December 1, 2006 (happ @ Dec. 01 2006,11:06)QUOTEOne senser hangs 10 feet above deck on north side of house. Another is at 5' on south-facing porch at the top of the hill. Which is the "official" one? I have been trying to get a solid consensus on this as I want to make sure my sensor is at the proper and "official" height. Right now I have it at approximately 5 feet above grade as I believed this to be about "right" as far as what the NWS uses? Larry Palm Harbor, FL 10a / Ft Myers, FL 10b Link to comment Share on other sites More sharing options...
spockvr6 Posted December 1, 2006 Report Share Posted December 1, 2006 (Kim @ Dec. 01 2006,10:49)QUOTEUm, so, how do you know where the coldest part of the yard is? If you have a fast acting thermocouple type sensor it is fairly easy to do on cold nights/morning with calm air. On many such mornings I have been spotted walking around with such a device and facing odd stares from neighbors. But, the stares were less condescending than they were last July when I fired up a bunch of forced air propane heaters for a test In the case of my yard as far as cold spots, the yard is small enough and uniform that there is little differential in temperature throughout. Larry Palm Harbor, FL 10a / Ft Myers, FL 10b Link to comment Share on other sites More sharing options...
elHoagie Posted December 1, 2006 Report Share Posted December 1, 2006 (BS, Man about Palms @ Dec. 01 2006,09:27)QUOTEWhere are your sensors? My sensor is in the most exposed area of my garden, inside a stephenson screen at a height of about 100cm. This is a lower height than most official measurements, which means the nighttime temperatures I record are a little colder than the official readings. This morning was a little warmer, I bottomed out at just under 5C (41F). Jack Sayers East Los Angeles growing cold tolerant palms halfway between the equator and the arctic circle... Link to comment Share on other sites More sharing options...
MattyB Posted December 1, 2006 Report Share Posted December 1, 2006 This morning was a little warmer for me too. Low of 37F(2.7C). I got my first thermometer set last year for Christmas and went through all the different spots and heights in the yard taking temps. I found that I got about 10F degrees difference from the warmest spot to the coldest spot. The warmest is usually next to the house and the coldest is out in the open as you'd expect. What surprised me was the 5-8F degree difference I saw just from moving a sensor from sitting on my patio table to only 5 feet away and strapped to the trunk of a King Palm. Matt Bradford "Manambe Lavaka" Spring Valley, CA (8.5 miles inland from San Diego Bay) 10B on the hill (635 ft. elevation) 9B in the canyon (520 ft. elevation) Link to comment Share on other sites More sharing options...
BS Man about Palms Posted December 2, 2006 Report Share Posted December 2, 2006 (Kim @ Dec. 01 2006,07:49)QUOTE (BS @ Man about Palms,Dec. 01 2006,09:27)QUOTEThis brings up a good point that I was talking with Shon about yesterday. How many folks here have there sensors or ? in the coldest spot in their yard versus just "outside". I decided I'd rather know my absolute coldest even if it meant losing the "Zone 10 awards...". Because I"LL know there rest of my yard is WARMER than the temp I stated. Where are your sensors? My sensor is maybe 40" above the ground on my back fence, east exposure. (Not under cover and lights with the Carpoxylon, but about 5 feet away.) Um, so, how do you know where the coldest part of the yard is? Just for kicks I did a test this morning. The sensor location was 40, under my patio cover attached to the house it was 46. Kim, generally your coldest spot will be the lowest area in your yard with the least amount of air movement out in the open and the least dense objects nearby. (Walls, rocks, trees, etc. either radiate some heat , or block the cold when falling) Another way would be to visualise your place in a "Hobbitscape" In other words, if you could see a real low fog, or a dry ice fog forming, where would it end up? I have mine @18' above the ground because thats about the height of the (someday) smallest babies will be when planted. Plus, if you move a sensor to test differential, you should be AWAY from it and give it 5 min to stabilise... PS- same area this morning was 40F, 3 degrees warmer Zone 10a at best after 2007 AND 2013, on SW facing hill, 1 1/2 miles from coast in Oceanside, CA. 30-98 degrees, and 45-80deg. about 95% of the time. "The great workman of nature is time." , "Genius is nothing but a great aptitude for patience." -George-Louis Leclerc de Buffon- I do some experiments and learning in my garden with palms so you don't have to experience the pain! Look at my old threads to find various observations and tips! Link to comment Share on other sites More sharing options...
Don Little Posted December 2, 2006 Report Share Posted December 2, 2006 Tonight will be much warmer than last night. Last night my temp bottomed out at 38F and by 10 Pm last night it was at 43F. Tonight at 10 Pm I'm currently at 54F. According to report the low will be 46F and so far that looks about right. Although I prefer it in the 50's to 60's, anything in the mid 40F range sounds warm compared to what it was. Don_L Rancho CUCAMONGA (yes it does exist) 40 min due east of Los Angeles USDA Zone 10a July Averages: Hi 95F, Low 62F Jan Averages: Hi 68F, Low 45F Link to comment Share on other sites More sharing options...
happ Posted December 3, 2006 Report Share Posted December 3, 2006 (spockvr6 @ Dec. 01 2006,11:13)QUOTEOn many such mornings I have been spotted walking around with such a device and facing odd stares from neighbors. But, the stares were less condescending than they were last July when I fired up a bunch of forced air propane heaters for a test In the case of my yard as far as cold spots, the yard is small enough and uniform that there is little differential in temperature throughout. You crack me up, Larry Flat/even landscape = consistent temp. LA : 82/56 Los Angeles/Pasadena 34° 10' N 118° 18' W Elevation: 910'/278m January Average Hi/Lo: 69F/50F July Average Hi/Lo: 88F/66F Average Rainfall: 19"/48cm USDA 11/Sunset 23 http://cdec.water.ca.gov/cgi-progs/queryF?MTW Link to comment Share on other sites More sharing options...
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