Lava Rock Posted December 28, 2017 Share Posted December 28, 2017 7 minutes ago, powderfreak said: I look at it like a challenge, ha. Wildcat closed today. Will try tomorrow. Is Stowe open? Link to comment Share on other sites More sharing options...
Hoth Posted December 28, 2017 Share Posted December 28, 2017 3 hours ago, OceanStWx said: When that cold shot arrives in FL, models are forecasting a helluva Tehuantepecker for the middle of next week. 50 knot surface gusts, with the LLJ around 80 knots at 900 mb. Stuff like this is why I love this board. Very very cool phenomenon. Thanks. Link to comment Share on other sites More sharing options...
OceanStWx Posted December 28, 2017 Share Posted December 28, 2017 5 minutes ago, Hoth said: Stuff like this is why I love this board. Very very cool phenomenon. Thanks. And it's been know for a long time now, check out the MWR from 1939 (ftp://ftp.library.noaa.gov/docs.lib/htdocs/rescue/mwr/067/mwr-067-11-0432a.pdf) Force 10 is storm force on the Beaufort scale for those that don't know (48-55 knots). Unsuspecting or unaware mariners can have their day ruined pretty quickly. Link to comment Share on other sites More sharing options...
OceanStWx Posted December 28, 2017 Share Posted December 28, 2017 In 2012 an Salvadoran fisherman was castaway when north winds blew his small boat out to sea, he was adrift for 13 months. Likely Tehuantepecer related. Link to comment Share on other sites More sharing options...
dryslot Posted December 28, 2017 Share Posted December 28, 2017 42 minutes ago, WxBlue said: Another 12 hours and my bar will drop some more. I'd be surprised if we get a colder max than today, though. It's been a fun first experience with subzero weather. You will get to run the gauntlet on the full CNE winter in just about a 30 day period........... Link to comment Share on other sites More sharing options...
MarkO Posted December 28, 2017 Share Posted December 28, 2017 30 minutes ago, powderfreak said: I don't think its snow blowing off the mountains... its just very cold and very small ice crystals hanging in the air. I assumed the haze was the blown snow. I do see snow being blown off though. Any idea the source of the ice crystals? Great lakes? Link to comment Share on other sites More sharing options...
NorEastermass128 Posted December 28, 2017 Share Posted December 28, 2017 The sea smoke was pretty good in Rockport this morning the pictures I was texted...we COLDDD! Link to comment Share on other sites More sharing options...
OceanStWx Posted December 28, 2017 Share Posted December 28, 2017 6 minutes ago, MarkO said: I assumed the haze was the blown snow. I do see snow being blown off though. Any idea the source of the ice crystals? Great lakes? Typically what happens is warmer air aloft (think big low level radiation inversion) can support liquid water (which can stay liquid down to -40C). When the inversion starts to break, that liquid water is mixed into the colder lower level air. RH goes up, ice crystals form, especially when you have salt or pollution in the air to support "warmer" temp ice formation. Link to comment Share on other sites More sharing options...
SJonesWX Posted December 28, 2017 Share Posted December 28, 2017 up to 7.0 at my torch spot. wind is ripping, even my poorly sited anemometer is showing gusts of 10mph, which is about as high as i get Link to comment Share on other sites More sharing options...
SJonesWX Posted December 28, 2017 Share Posted December 28, 2017 6 minutes ago, NorEastermass128 said: The sea smoke was pretty good in Rockport this morning the pictures I was texted...we COLDDD! there was a TV met just 2 days ago that called it "steam". Link to comment Share on other sites More sharing options...
OceanStWx Posted December 28, 2017 Share Posted December 28, 2017 5 minutes ago, SJonesWX said: there was a TV met just 2 days ago that called it "steam". Well the formation is very similar (adding water vapor to much cooler air to the point that it condenses into a liquid). Link to comment Share on other sites More sharing options...
SJonesWX Posted December 28, 2017 Share Posted December 28, 2017 Just now, OceanStWx said: Well the formation is very similar (adding water vapor to much cooler air to the point that it condenses into a liquid). yeah, i get that part. just sounded like that TV met was being ignorant. but maybe i am just nit-picky on the terminology. if i went out to the harbor and stuck my hand out over the water, would the steam burn my hand? Link to comment Share on other sites More sharing options...
powderfreak Posted December 28, 2017 Share Posted December 28, 2017 44 minutes ago, Lava Rock said: Wildcat closed today. Will try tomorrow. Is Stowe open? Wind holds on a couple lifts but yeah Stowe would never just straight close. Link to comment Share on other sites More sharing options...
OceanStWx Posted December 28, 2017 Share Posted December 28, 2017 Just now, SJonesWX said: yeah, i get that part. just sounded like that TV met was being ignorant. but maybe i am just nit-picky on the terminology. if i went out to the harbor and stuck my hand out over the water, would the steam burn my hand? I get the point, but absent the boiling water the process is the same. I mean we typically don't burn ourselves with steam rising off a hot drink either. Link to comment Share on other sites More sharing options...
STILL N OF PIKE Posted December 28, 2017 Share Posted December 28, 2017 Are we looking at low temperatures bottoming around 2-4am tonite then a plateau or slow rise as skies become mostly cloudy for MHT south. Link to comment Share on other sites More sharing options...
OceanStWx Posted December 28, 2017 Share Posted December 28, 2017 Man, it's so cold my isentropic charts are too high in the atmosphere. I might have to create some new ones at around 265 K in order to get a look at mid level isentropic flow. Since potential temp decreases with height, as the atmosphere gets colder, the lower values of potential temp "come out of the ground," bumping higher potential temp values higher into the atmosphere. Typically the 850-700 mb will be around 285-290 K give or take, but instead 285 K is up around 500 mb by Saturday. Link to comment Share on other sites More sharing options...
SJonesWX Posted December 28, 2017 Share Posted December 28, 2017 4 minutes ago, OceanStWx said: I get the point, but absent the boiling water the process is the same. I mean we typically don't burn ourselves with steam rising off a hot drink either. man, you mets sure do like to defend each other. Link to comment Share on other sites More sharing options...
powderfreak Posted December 28, 2017 Share Posted December 28, 2017 22 minutes ago, OceanStWx said: Typically what happens is warmer air aloft (think big low level radiation inversion) can support liquid water (which can stay liquid down to -40C). When the inversion starts to break, that liquid water is mixed into the colder lower level air. RH goes up, ice crystals form, especially when you have salt or pollution in the air to support "warmer" temp ice formation. METAR KMPV 281805Z AUTO 31018G24KT 2 1/2SM HZ FEW013 OVC019 M21/M24 That's pretty brutal at Montpelier but continued with the 2.5sm visibility haze. -6F with winds gusting to 30mph at 1pm in the afternoon and a wind chill of -30F. That's for the lower elevations. It's in a whole other realm up here on the mountains. Link to comment Share on other sites More sharing options...
OceanStWx Posted December 28, 2017 Share Posted December 28, 2017 4 minutes ago, powderfreak said: METAR KMPV 281805Z AUTO 31018G24KT 2 1/2SM HZ FEW013 OVC019 M21/M24 That's pretty brutal at Montpelier but continued with the 2.5sm visibility haze. -6F with winds gusting to 30mph at 1pm in the afternoon and a wind chill of -30F. That's for the lower elevations. It's in a whole other realm up here on the mountains. MWN has finally "warmed" to -58 wind chills, which is the warmest it's been since Boxing Day. Link to comment Share on other sites More sharing options...
HimoorWx Posted December 28, 2017 Share Posted December 28, 2017 Brutal wind chill on the outer Cape and lots of arctic sea smoke. Also saw what looked like mini water spouts or dust devils over the water. Is that plausible? Sent from my LG-M322 using Tapatalk Link to comment Share on other sites More sharing options...
OceanStWx Posted December 28, 2017 Share Posted December 28, 2017 1 minute ago, HimoorWx said: Brutal wind chill on the outer Cape and lots of arctic sea smoke. Also saw what looked like mini water spouts or dust devils over the water. Is that plausible? Sent from my LG-M322 using Tapatalk Yes. If you have really dramatic temp difference between air and water, and at least some wind, you can get unstable currents to form and steam devils are quite common. Champlain gets them often. Link to comment Share on other sites More sharing options...
dendrite Posted December 28, 2017 Share Posted December 28, 2017 Looks like my high will be 2.3F breaking my old record of 4.2F in Jan 07. Link to comment Share on other sites More sharing options...
MarkO Posted December 28, 2017 Share Posted December 28, 2017 Bottomed out at -3.3F. I believe that is my lowest high for a day since I built this cabin in 2011. Midnight temp was -3.7, so in a way I'm glad I warmed past it today. Link to comment Share on other sites More sharing options...
HimoorWx Posted December 28, 2017 Share Posted December 28, 2017 Yes. If you have really dramatic temp difference between air and water, and at least some wind, you can get unstable currents to form and steam devils are quite common. Champlain gets them often.Thanks for the explanation. Heading back to the ocean now. Will try to get pixSent from my LG-M322 using Tapatalk Link to comment Share on other sites More sharing options...
Sugarloaf1989 Posted December 28, 2017 Share Posted December 28, 2017 The Connecticut River is frozen over around Springfield. There are a few open water spots. Link to comment Share on other sites More sharing options...
tamarack Posted December 28, 2017 Share Posted December 28, 2017 2 hours ago, powderfreak said: I don't think its snow blowing off the mountains... its just very cold and very small ice crystals hanging in the air. Jan. 18, 1982 brought the lowest WCI I've experienced, -101 on the old scale, probably -70s on the new. That morning was -34 with winds gusting 35+, and visibility was 2 miles in tiny snow grains. Only a dusting, the heatless sun was visible thru the clouds, in fact the sky straight above looked blue-ish. My pickup was plugged in (the good heater hose device, not the inadequate dipstick warmer) and it still barely started. High for the day was -14. South end of Moosehead at 2 PM, -11 with WCI -37, up from -12 and -41 the hour before. With a 25-mile NNW fetch off the lake and lots of new pow, must be an interesting afternoon in Greenville. Link to comment Share on other sites More sharing options...
WxBlue Posted December 28, 2017 Share Posted December 28, 2017 Look like 5 F is our official high today, which would break my previous coldest high of 12 F from February 2015 in Asheville, NC. Link to comment Share on other sites More sharing options...
mreaves Posted December 28, 2017 Share Posted December 28, 2017 3 minutes ago, WxBlue said: Look like 5 F is our official high today, which would break my previous coldest high of 12 F from February 2015 in Asheville, NC. Looks like we hit -3. The wind is brutal. WCI currently -24 Link to comment Share on other sites More sharing options...
WxBlue Posted December 28, 2017 Share Posted December 28, 2017 Just now, mreaves said: Looks like we hit -3. The wind is brutal. WCI currently -24 It's been -15 to -25 all day long here. Not looking forward to going outside after work. Link to comment Share on other sites More sharing options...
TalcottWx Posted December 28, 2017 Share Posted December 28, 2017 High of 12F at Logan so far. Forecasts have us getting down near zero tonight. Always impressive when that happens. Usually in Jan or Feb. Link to comment Share on other sites More sharing options...
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