NJ_Ken Posted January 2, 2014 Share Posted January 2, 2014 Works for me... Definitely January 22, 1984. That is the day PHL hit -7 F, which, as discussed above, is the coldest temperature temperature recorded at PHL (but not the all time record for Philadelphia, which occured in 1934 and predates the existence of PHL). After that late January 1984 cold snap, the weather in the East moderated quite a bit. February was, for the most part, average-to-above-average with no really cold air (and no snow at PHL) at all. Link to comment Share on other sites More sharing options...
Violentweatherfan Posted January 3, 2014 Share Posted January 3, 2014 MeteoStar updated...this would be something if it verifies. http://wxweb.meteostar.com/sample/sample.shtml?text=kphl Link to comment Share on other sites More sharing options...
famartin Posted January 3, 2014 Author Share Posted January 3, 2014 Raw GFS and EC plunge PHL down to around -4... NAM is a somewhat more tame 0. Link to comment Share on other sites More sharing options...
PAPPG Posted January 3, 2014 Share Posted January 3, 2014 Looks like a high of 16.9 Currently 16.1/-6dp 30.25r WNW to NW @5 Temps falling quick. Below zero low looks quite possible. Link to comment Share on other sites More sharing options...
eastonwx Posted January 3, 2014 Share Posted January 3, 2014 Cold temps for tonite... Link to comment Share on other sites More sharing options...
Voyager Posted January 3, 2014 Share Posted January 3, 2014 Down to 7 degrees here after a 12:01AM high of 19. It'll be interesting to see if I an get to zero (or below). Link to comment Share on other sites More sharing options...
KamuSnow Posted January 4, 2014 Share Posted January 4, 2014 Down to 7 degrees here after a 12:01AM high of 19. It'll be interesting to see if I an get to zero (or below). Looks like you're well on your way! Link to comment Share on other sites More sharing options...
Animal Posted January 4, 2014 Share Posted January 4, 2014 Going to take a serious drop in temps for PHL airport to get near zero this morning. For what ever reason, just looks to be a cold morning when all is said and done and nothing historical. Link to comment Share on other sites More sharing options...
famartin Posted January 4, 2014 Author Share Posted January 4, 2014 Going to take a serious drop in temps for PHL airport to get near zero this morning. For what ever reason, just looks to be a cold morning when all is said and done and nothing historical. Yeah... I'll compile the stats on how long its been since various places got as cold as they got this afternoon... Link to comment Share on other sites More sharing options...
Animal Posted January 4, 2014 Share Posted January 4, 2014 Yeah... I'll compile the stats on how long its been since various places got as cold as they got this afternoon... Am I wrong to think this cold shot was not as intense as the models forecasted. I checked the ops from sterling to mt holly and upton and I did not see anything that gave me goose bumps for low temps. Link to comment Share on other sites More sharing options...
famartin Posted January 4, 2014 Author Share Posted January 4, 2014 Am I wrong to think this cold shot was not as intense as the models forecasted. I checked the ops from sterling to mt holly and upton and I did not see anything that gave me goose bumps for low temps. As far as the raw model numbers, yeah. But as this wasn't right during a storm passage, we probably shouldn't have leaned too much on them. Because this ended up more of a radiational night, the rural areas got cold but not the cities. Link to comment Share on other sites More sharing options...
BucksCO_PA Posted January 4, 2014 Share Posted January 4, 2014 Am I wrong to think this cold shot was not as intense as the models forecasted. I checked the ops from sterling to mt holly and upton and I did not see anything that gave me goose bumps for low temps. with that being said Allentown & Mt. Pocono set record lows yesterday & Trenton & Allentown tied record lows this morning Link to comment Share on other sites More sharing options...
Pohopoco Posted January 4, 2014 Share Posted January 4, 2014 Ppl seem to forget cold,but never Snowstorms...These cold shots are impressive,but so transitory...just 6 years ago ( in these parts;the famous "half" amazing winter of 06/07) we had 5 days/nights in a row of under 10 for highs and under 0 for lows with -7 being the coldest...just a FYI---in 07 mid Jan, the so far warm winter, turned on a dime mid-month than featured the VD,St,Patty's and last the Tax Day Storms,Snow on the ground till about a week after that last intense storm... Link to comment Share on other sites More sharing options...
iceman56 Posted January 4, 2014 Share Posted January 4, 2014 Looks like very few sites were the coldest since 1994. Suspecting the next air mass will be similar. Link to comment Share on other sites More sharing options...
Redmorninglight Posted January 4, 2014 Share Posted January 4, 2014 As far as the raw model numbers, yeah. But as this wasn't right during a storm passage, we probably shouldn't have leaned too much on them. Because this ended up more of a radiational night, the rural areas got cold but not the cities. Good point Ray as KWWD sat in the mid teens until the wind stopped and then dropped to a low of 5F. I sure was impressed since my wife and I were out until 11pm and the car dash read 14F. Very good radiational cooling. KMIV got to -6F. They can hang with the best of them. Link to comment Share on other sites More sharing options...
KamuSnow Posted January 4, 2014 Share Posted January 4, 2014 I sense disappointment in some quarters with the degree of the chill this morning. Setting aside that it does seem much easier for us to break high temperature records than low ones these days, it's good to remember that historically our coldest weather occurs from mid-January to mid-February, generally speaking. I believe Philadelphia broke the modern day record for 24 hour snowfall at KPHL for both Jan. 2nd and 3rd. It could have been done with much less than the 9.0 reported storm total (the record was 0.80 and 1.50 for those 2 days if I remember correctly). It appears possible that the proximity of the Delaware River to the airport affected the temperature at KPHL earlier this morning. The wind shifted to a generally southerly direction after 4 am, and some clouds rolled in, when they could have been shaving a few more degrees off. Don't know if this could happen over there or not. To me the weather of the last 2 days has been impressive even without breaking records - it's been in the ballpark, and I like it! Link to comment Share on other sites More sharing options...
windvane Posted January 4, 2014 Share Posted January 4, 2014 -12 in Mertztown last night http://raws.wrh.noaa.gov/cgi-bin/roman/meso_base.cgi?stn=AR731&time=GMT Link to comment Share on other sites More sharing options...
JCT777 Posted January 4, 2014 Share Posted January 4, 2014 with that being said Allentown & Mt. Pocono set record lows yesterday & Trenton & Allentown tied record lows this morning Yup...and while this morning wasn't necessarily the coldest in almost 20 years for a lot of places, it certainly was the coldest in quite a few years. I'm interested to see what the low temps will be Tuesday morning...I'm guessing most places in the region will have temps close to what they were this morning. Link to comment Share on other sites More sharing options...
famartin Posted January 4, 2014 Author Share Posted January 4, 2014 Lows this morning and the date of last occurrence of cold or colder readings...PHL 8 this morning... last was 8 on 1/24/2011PNE 3 this morning... last was 3 on 1/24/2011 VAY -3 this morning... coldest reading since ASOS was installed in 1997!ILG 5 this morning... last was 5 on 1/17/2009PTW -2 this morning... last was -2 on 1/28/2005DYL -2 this morning... last was -3 on 1/24/2011 TTN -1 this morning... last was -3 on 1/21/1994!MIV -8 this morning... last was -10 on 1/28/1987!ACY -3 this morning... last was -8 on 2/5/1996!RDG 1 this morning... last was 0 on 1/24/2011ABE -4 this morning... last was -4 on 1/24/2011 Link to comment Share on other sites More sharing options...
KamuSnow Posted January 4, 2014 Share Posted January 4, 2014 Lows this morning and the date of last occurrence of cold or colder readings... PHL 8 this morning... last was 8 on 1/24/2011 PNE 3 this morning... last was 3 on 1/24/2011 VAY -3 this morning... coldest reading since ASOS was installed in 1997! ILG 5 this morning... last was 5 on 1/17/2009 PTW -2 this morning... last was -2 on 1/28/2005 DYL -2 this morning... last was -3 on 1/24/2011 TTN -1 this morning... last was -3 on 1/21/1994! MIV -8 this morning... last was -10 on 1/28/1987! ACY -3 this morning... last was -8 on 2/5/1996! RDG 1 this morning... last was 0 on 1/24/2011 ABE -4 this morning... last was -4 on 1/24/2011 The clustering of dates around the latter part of January is part of why last night's temps were impressive to me Link to comment Share on other sites More sharing options...
ChescoWx Posted January 4, 2014 Share Posted January 4, 2014 I have noted in the 10 years I have lived here at 700ft asl that getting a sub zero at a somewhat higher elevation is very rare.....this morning almost all reporting sites were sub-zero in Chester County....if they were under 500ft asl. I have only recorded 1 sub zero low here in the last 10 years - January 24, 2011 Link to comment Share on other sites More sharing options...
DarthDoppler Posted January 5, 2014 Share Posted January 5, 2014 I have noted in the 10 years I have lived here at 700ft asl that getting a sub zero at a somewhat higher elevation is very rare.....this morning almost all reporting sites were sub-zero in Chester County....if they were under 500ft asl. I have only recorded 1 sub zero low here in the last 10 years - January 24, 2011 It's not the elevation, it's the lay of the land. My old house was at 800' but in a valley. (Eastern Berks county) It hit below 0 quite often, readings of -18 and -22 in Jan 1994, and -8 in 1996. Many in the 80's as well. I moved a mile up the road in 1997 to 900', Coldest I've seen here is -4.5, but then we haven't had 80's or 90's level of cold either. Look at the afternoon highs of this last "cold snap", it doesn't hold a candle to the air masses of the 80's and 90's. ABE had a high of 1 in Jan 1994.... I've been just below 0 (-1 to -4.5) about a half dozen times since I've moved here. I'm sure it was decently below 0 during those impressive cold snaps of 1985 and 1994. The lay of the land where I'm at at 900's is kind of a ridge and plateau morphed together, with slightly higher spots just to my sw through north. South and east it is a "drop off" but extremely gradual. (20' in half a mile lol) So where I'm at is nowhere near as good as the true valley I used to live in, but it's not as bad as being on a "peak" either. Look at how well the Pocono plateau does with morning temps despite being higher than both of us put together Cold air sinks, but higher elevations are colder, it's always a balance. Look at the Sierra, what do they have going for them? Pacific air and not very far north.......it's all elevation! Denver (at ~5,500') on the other hand thanks to the prevailing winds isn't cold very often because they get downslope winds 90ish percent of the time. (but look out when they turn around lol) Rogers Pass Montana is pretty much the same elevation as Denver, and holds the record for the entire lower 48..... -70! Link to comment Share on other sites More sharing options...
ChescoWx Posted January 5, 2014 Share Posted January 5, 2014 Darth Actually it is the elevation as last night was more the effect of warm air advection beginning at slightly higher elevations around 230am. Folks within a mile of here are over 900ft and they were a couple degrees warmer than me...while folks lower were colder. During cold advection nights it is always colder here than lower spots but the opposite is true during warm advection. The biggest impact of elevation is during the day and with precipitation locally but on those calm cold nights with coldest readings the lower spots radiate and get much lower then I could ever expect It's not the elevation, it's the lay of the land. My old house was at 800' but in a valley. (Eastern Berks county) It hit below 0 quite often, readings of -18 and -22 in Jan 1994, and -8 in 1996. Many in the 80's as well. I moved a mile up the road in 1997 to 900', Coldest I've seen here is -4.5, but then we haven't had 80's or 90's level of cold either. Look at the afternoon highs of this last "cold snap", it doesn't hold a candle to the air masses of the 80's and 90's. ABE had a high of 1 in Jan 1994.... I've been just below 0 (-1 to -4.5) about a half dozen times since I've moved here. I'm sure it was decently below 0 during those impressive cold snaps of 1985 and 1994. The lay of the land where I'm at at 900's is kind of a ridge and plateau morphed together, with slightly higher spots just to my sw through north. South and east it is a "drop off" but extremely gradual. (20' in half a mile lol) So where I'm at is nowhere near as good as the true valley I used to live in, but it's not as bad as being on a "peak" either. Look at how well the Pocono plateau does with morning temps despite being higher than both of us put together Cold air sinks, but higher elevations are colder, it's always a balance. Look at the Sierra, what do they have going for them? Pacific air and not very far north.......it's all elevation! Denver (at ~5,500') on the other hand thanks to the prevailing winds isn't cold very often because they get downslope winds 90ish percent of the time. (but look out when they turn around lol) Rogers Pass Montana is pretty much the same elevation as Denver, and holds the record for the entire lower 48..... -70! Link to comment Share on other sites More sharing options...
DarthDoppler Posted January 5, 2014 Share Posted January 5, 2014 Darth Actually it is the elevation as last night was more the effect of warm air advection beginning at slightly higher elevations around 230am. Folks within a mile of here are over 900ft and they were a couple degrees warmer than me...while folks lower were colder. During cold advection nights it is always colder here than lower spots but the opposite is true during warm advection. The biggest impact of elevation is during the day and with precipitation locally but on those calm cold nights with coldest readings the lower spots radiate and get much lower then I could ever expect Yes I know I said as much in the other thread about last nights obs. I'll take the precipitation over cold nights any day though! (14" of snow October 2011) I usually get about 2.5 colder than ABE during the day, and on most nights. (with the exception of warm air advection) Interesting observation I just got to see.......when I got home at 10pm I had just left my parents 5 minutes away they were 7.3!! ABE was 16, and I was 14.3. My parents are 4 miles SE of me at 450', surrounded by 900'-1100' hills about 75% of the way around. (the gap is to the south/southeast) I've also seen them 23 when I was 16 on a windy December afternoon perhaps 5 years ago. It wasn't during a sharp cold front passage either, the cold air was fairly well entrenched already. EDIT: The point of my previous post in this thread is that we sure can see subzero at higher elevations. It just takes the right conditions. I'm sure your house got well under 0 in 1994. (dewpoints were about -22, compared to about 10 warmer with this last air mass) Those nights didn't have warm air advection either, that's what stopped us this time. Link to comment Share on other sites More sharing options...
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