wxeyeNH Posted October 14, 2016 Share Posted October 14, 2016 32 minutes ago, Lava Rock said: low of 36F was my coldest so far. Maybe bust 32F tonight? 36F is also my low. I don't record accurate radiational cooling temps because my Davis is mounted up at my roof top peak. Probably 25 feet off the ground. I'm sure if I was measuring at the standard weather station height I would be at least a couple of degrees lower. Either way the petunias are still hanging on but tonight might do them in. Watching all the storms coming into the NW US. Some of that moisture looks to get in here eventually. Perhaps our endless high pressure with quick fropa's will finally come to an end as we get into a more active colder season pattern. Link to comment Share on other sites More sharing options...
powderfreak Posted October 14, 2016 Share Posted October 14, 2016 35 minutes ago, wxeyeNH said: 36F is also my low. I don't record accurate radiational cooling temps because my Davis is mounted up at my roof top peak. Probably 25 feet off the ground. I'm sure if I was measuring at the standard weather station height I would be at least a couple of degrees lower. Either way the petunias are still hanging on but tonight might do them in. Watching all the storms coming into the NW US. Some of that moisture looks to get in here eventually. Perhaps our endless high pressure with quick fropa's will finally come to an end as we get into a more active colder season pattern. If you're taking temps at like 25-30 feet and get a 36F on a clear calm night, that's probably like 30-32F at the surface. There can be a huge difference on some nights I bet. Link to comment Share on other sites More sharing options...
alex Posted October 14, 2016 Share Posted October 14, 2016 I'm curious to see how the new weather station fares in tonight's cold. So far it seems spot on - low of 33 this morning, right in line with all the other PWS in the area - but there was no radiational cooling at play. P&C low says 25F for tonight, it'll be interested to see. With old station I probably would have gotten 18F lol Link to comment Share on other sites More sharing options...
Lava Rock Posted October 14, 2016 Share Posted October 14, 2016 2 hours ago, alex said: I'm curious to see how the new weather station fares in tonight's cold. So far it seems spot on - low of 33 this morning, right in line with all the other PWS in the area - but there was no radiational cooling at play. P&C low says 25F for tonight, it'll be interested to see. With old station I probably would have gotten 18F lol you should post your cam to WU. Link to comment Share on other sites More sharing options...
alex Posted October 14, 2016 Share Posted October 14, 2016 1 hour ago, Lava Rock said: you should post your cam to WU. Yeah I will, once I get the final one (don't want to go through all the set up multiple times! --Alex Link to comment Share on other sites More sharing options...
alex Posted October 14, 2016 Share Posted October 14, 2016 33.8 with the deck glimmering in frost. Wintry appeal continues. Link to comment Share on other sites More sharing options...
wxeyeNH Posted October 14, 2016 Share Posted October 14, 2016 16 minutes ago, alex said: 33.8 with the deck glimmering in frost. Wintry appeal continues. Radiational cooling is so hard to measure accurately. I have gone out on a clear calm night with my digital thermometer and gotten readings that are a few degrees different just having the thermometer at different heights off the ground. So don't get too discouraged if its not right in line with others in your immediate area. The micro climates on calm nights are just nuts. In the winter, on a windless night I can be 10F warmer (or more) than just 1/4 mile down my hill. Link to comment Share on other sites More sharing options...
alex Posted October 15, 2016 Share Posted October 15, 2016 That's pretty crazy! My old station was definitely off though, which is why I'm testing this one. It says 29.5 now; the PWS in Twin Mountain, which is a bit lower elevation says 29, and the one by the slopes, about 200 ft higher says 33.7, while the one at the base of the Cog is at 30.3... so it seems about right, considering the microclimate differences you mention. So far I like this station, I just need to get it to talk to WU. Link to comment Share on other sites More sharing options...
Lava Rock Posted October 15, 2016 Share Posted October 15, 2016 That's pretty crazy! My old station was definitely off though, which is why I'm testing this one. It says 29.5 now; the PWS in Twin Mountain, which is a bit lower elevation says 29, and the one by the slopes, about 200 ft higher says 33.7, while the one at the base of the Cog is at 30.3... so it seems about right, considering the microclimate differences you mention. So far I like this station, I just need to get it to talk to WU. What are you using for weather software? Link to comment Share on other sites More sharing options...
powderfreak Posted October 15, 2016 Share Posted October 15, 2016 32F, car roof is already frosty. Crystal clear skies. BTV as usual is much warmer with 41F. Sometimes it amazes me how consistently and significant the temperature differences are with not much elevation difference. Just different immediate surroundings. Link to comment Share on other sites More sharing options...
Lava Rock Posted October 15, 2016 Share Posted October 15, 2016 40f and leveling off. No way we hit freezing here. Link to comment Share on other sites More sharing options...
alex Posted October 15, 2016 Share Posted October 15, 2016 there's no software per se. The console connects to wifi and should transmit to WU but it's not working. They're sending me a data link as a workaround. Down to 27.7. Shouldn't be hard to make it to the forecasted low of 25 Link to comment Share on other sites More sharing options...
dendrite Posted October 15, 2016 Share Posted October 15, 2016 32F I usually drop about 5F after midnight on rad cooling nights so 27-28F looks like a good bet. Link to comment Share on other sites More sharing options...
OceanStWx Posted October 15, 2016 Share Posted October 15, 2016 38 minutes ago, dendrite said: 32F I usually drop about 5F after midnight on rad cooling nights so 27-28F looks like a good bet. Always fun to walk into work and see that we've already hit most of our low temps in the grids. Link to comment Share on other sites More sharing options...
eekuasepinniW Posted October 15, 2016 Share Posted October 15, 2016 LCI is 31 and I've got 35.5 Walls are closing in. Link to comment Share on other sites More sharing options...
backedgeapproaching Posted October 15, 2016 Share Posted October 15, 2016 27F Link to comment Share on other sites More sharing options...
dendrite Posted October 15, 2016 Share Posted October 15, 2016 6 hours ago, eekuasepinniW said: LCI is 31 and I've got 35.5 Walls are closing in. Congrats on your 31F. 28F here. LCI 29, CON 26, 1P1 24, HIE 23, BML 20 Link to comment Share on other sites More sharing options...
dryslot Posted October 15, 2016 Author Share Posted October 15, 2016 25.0°F was the low, At 28.6° right now, Coldest morning so far Link to comment Share on other sites More sharing options...
alex Posted October 15, 2016 Share Posted October 15, 2016 Holy frost this morning! Low temp is a bit of a mystery but as wxeye said, hard to pintpoint such a microclimate-driven difference. My new PWS says 21; the one in Twin Mtn, a bit lower elevation, 22; the one by the slopes 27. The auto road is currently at 26 at 1600 ft, while I'm currently at 24 - so not far off... The verdict - I think the new PWS is fairly accurate, certainly better shielded than the previous one... Quote Link to comment Share on other sites More sharing options...
Lava Rock Posted October 15, 2016 Share Posted October 15, 2016 25.0°F was the low, At 28.6° right now, Coldest morning so far35.6f. denied again as expected Link to comment Share on other sites More sharing options...
dendrite Posted October 15, 2016 Share Posted October 15, 2016 1 minute ago, Lava Rock said: 35.6f. denied again as expected Heh...what's your siting? Hve a pic? Link to comment Share on other sites More sharing options...
dryslot Posted October 15, 2016 Author Share Posted October 15, 2016 2 minutes ago, Lava Rock said: 35.6f. denied again as expected Heavy, Heavy frost Link to comment Share on other sites More sharing options...
Lava Rock Posted October 15, 2016 Share Posted October 15, 2016 Heh...what's your siting? Hve a pic?You mean topo map? Link to comment Share on other sites More sharing options...
dryslot Posted October 15, 2016 Author Share Posted October 15, 2016 You mean topo map?He wants to see a pic of where your sensor is located Link to comment Share on other sites More sharing options...
CoastalWx Posted October 15, 2016 Share Posted October 15, 2016 1 minute ago, dryslot said: He wants to see a pic of where your sensor is located Sounds kinky. Link to comment Share on other sites More sharing options...
Lava Rock Posted October 15, 2016 Share Posted October 15, 2016 He wants to see a pic of where your sensor is locatedGotcha. About 6' above ground Link to comment Share on other sites More sharing options...
alex Posted October 15, 2016 Share Posted October 15, 2016 24 minutes ago, Lava Rock said: 35.6f. denied again as expected That seems strange. It was 29F in Bedford, MA. Link to comment Share on other sites More sharing options...
Lava Rock Posted October 15, 2016 Share Posted October 15, 2016 That seems strange. It was 29F in Bedford, MA. It's always colder everywhere else on calm nights. We're at 720' and the cold air drains down towards the valley and lake below. Link to comment Share on other sites More sharing options...
dendrite Posted October 15, 2016 Share Posted October 15, 2016 18 minutes ago, Lava Rock said: Gotcha. About 6' above ground Yeah...setup looks fine. Any radiative cold you get just drains down that hill. Link to comment Share on other sites More sharing options...
mreaves Posted October 15, 2016 Share Posted October 15, 2016 Looks like 25f at MPV. Thw WU station near me had 24f at 7:00. Link to comment Share on other sites More sharing options...
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