Deck Pic Posted September 16, 2014 Share Posted September 16, 2014 I hope this winter we get a uniform 8" snow cover throughout entire DC metro. Everything, roads, ground, parking lots, rooftops, sidewalks, buildings-, everything. At that point, the only heat radiance for the so called "heat island" would be what can radiate out of the sides of buildings and I gotta think that would be minimal. Under those condtions, I can predict that BWI/Annapolis/Andrew/Ft Belvoir will be 23 and DCA will be 30 and then let someone try and justify that. heat island is assuredly real and won't be mitigated much by snow when there are buildings all over the place and the river..while I agree with you on this specific day, usually you're out to lunch and nobody takes you seriously...Let me know when IAD hits -15 with little or no snowcover under a less than impressive air mass like it did in the mid 80s Link to comment Share on other sites More sharing options...
dailylurker Posted September 16, 2014 Share Posted September 16, 2014 Another beautiful day. Disappointed not to see at least a little bit of rain last night, though. This unrelenting dryness is unlike any I can recall. This certainly only applies probably to a 20 mile radius from mby, but 2010 and 1988 may have been outdone. It's surprising how many trees are changing color and dropping leaves. No rain in the next 7-10 days either. Boring is a under statement. Link to comment Share on other sites More sharing options...
NinjaWarrior2 Posted September 16, 2014 Share Posted September 16, 2014 BORING, BORING, BORING, it's nice out though Link to comment Share on other sites More sharing options...
WEATHER53 Posted September 16, 2014 Share Posted September 16, 2014 heat island is assuredly real and won't be mitigated much by snow when there are buildings all over the place and the river..while I agree with you on this specific day, usually you're out to lunch and nobody takes you seriously...Let me know when IAD hits -15 with little or no snowcover under a less than impressive air mass like it did in the mid 80s Dulles did that once, not a precedent. Annapolis does not have that same problem and the body of water surrounding it is much longer, wider and deeper. Try not to personalize things but since you did..you have your head up your as* on this issue. When it is cold in the winter around DCA the water temp is 32-35 and if the winds are n-wsw there is no river effect anyway. WxUSAF is mostly a troll from the old Poltiical forum days. Now, very interestingly, since you mentioned the e-mail you sent to Sterling. DCA is now suddenly down to 76 with the same direction of winds and at the warmest part of the day. Perhaps they listened to you and recalibrated. The next question is will they recalibrate for the last 20 years. The Potomac could be frozen over and the same temp discrepancy would likely occur. Link to comment Share on other sites More sharing options...
WEATHER53 Posted September 16, 2014 Share Posted September 16, 2014 heat island is assuredly real and won't be mitigated much by snow when there are buildings all over the place and the river..while I agree with you on this specific day, usually you're out to lunch and nobody takes you seriously...Let me know when IAD hits -15 with little or no snowcover under a less than impressive air mass like it did in the mid 80s So you really believe that with 100% snow cover and a frozen Potomac that enough heat would radiate out of the sides of buildings to make DCA 10 degrees milder. That's drinking some real kool aid. Link to comment Share on other sites More sharing options...
AvantHiatus Posted September 16, 2014 Share Posted September 16, 2014 So you really believe that with 100% snow cover and a frozen Potomac that enough heat would radiate out of the sides of buildings to make DCA 10 degrees milder. That's drinking some real kool aid. Link to comment Share on other sites More sharing options...
Deck Pic Posted September 16, 2014 Share Posted September 16, 2014 Dulles did that once, not a precedent. Annapolis does not have that same problem and the body of water surrounding it is much longer, wider and deeper. Try not to personalize things but since you did..you have your head up your as* on this issue. When it is cold in the winter around DCA the water temp is 32-35 and if the winds are n-wsw there is no river effect anyway. WxUSAF is mostly a troll from the old Poltiical forum days. Now, very interestingly, since you mentioned the e-mail you sent to Sterling. DCA is now suddenly down to 76 with the same direction of winds and at the warmest part of the day. Perhaps they listened to you and recalibrated. The next question is will they recalibrate for the last 20 years. The Potomac could be frozen over and the same temp discrepancy would likely occur. There's no point...no matter what the evidence you will ignore it, because you have your agenda,...I am not going to put any more time into this..I will ignore you like everyone else...I have repeatedly done research and presented evidence to show you are in error most of the time, and you ignore it...that is flat disrespectful and disingenuous.....you have no credibility...I don't know why I bother.. Link to comment Share on other sites More sharing options...
Ian Posted September 16, 2014 Share Posted September 16, 2014 DCA isn't used in official climate change stuff. Link to comment Share on other sites More sharing options...
T. August Posted September 16, 2014 Author Share Posted September 16, 2014 Quick question: Before I move my Davis station, I want to know if the temp in the shade is considered accurate. Right now I have it on a deck, but in the direct sunlight it gets too warm, and often has strange high temps at 6:00 in the evening due to the angle of the sunlight. I know being near trees will make rain and DP inaccurate, but the temps are most important to me. Also, it has a shield. But, for example, my high temps end up 2 degrees warmer than BWI. Link to comment Share on other sites More sharing options...
snowfan Posted September 16, 2014 Share Posted September 16, 2014 Looking beyond the nice stretch tomorrow - Saturday, it looks like another shot of fall early next week. Highs in the 60s showing up. 30s for lows trying to push across the 95 corridor in the Wed-Thur timeframe. Link to comment Share on other sites More sharing options...
WEATHER53 Posted September 17, 2014 Share Posted September 17, 2014 Quick question: Before I move my Davis station, I want to know if the temp in the shade is considered accurate. Right now I have it on a deck, but in the direct sunlight it gets too warm, and often has strange high temps at 6:00 in the evening due to the angle of the sunlight. I know being near trees will make rain and DP inaccurate, but the temps are most important to me. Also, it has a shield. But, for example, my high temps end up 2 degrees warmer than BWI. A louvered white box with ventilation slats was considered the unifrom standard bearer. I do not know if that has changed. Link to comment Share on other sites More sharing options...
WEATHER53 Posted September 17, 2014 Share Posted September 17, 2014 DCA isn't used in official climate change stuff. Golly. If it was accurate then it probably would be. Link to comment Share on other sites More sharing options...
midatlanticweather Posted September 17, 2014 Share Posted September 17, 2014 Anyone have the current Departure for the month? Link to comment Share on other sites More sharing options...
MN Transplant Posted September 17, 2014 Share Posted September 17, 2014 Quick question: Before I move my Davis station, I want to know if the temp in the shade is considered accurate. Right now I have it on a deck, but in the direct sunlight it gets too warm, and often has strange high temps at 6:00 in the evening due to the angle of the sunlight. I know being near trees will make rain and DP inaccurate, but the temps are most important to me. Also, it has a shield. But, for example, my high temps end up 2 degrees warmer than BWI. The problem may be the deck itself rather than the sunlight. I have mine out in the sunniest part of the yard. Link to comment Share on other sites More sharing options...
MN Transplant Posted September 17, 2014 Share Posted September 17, 2014 I emailed Sterling..usually you're wrong on the DCA issue, but today the 80 degree reading has absolutely no support Usually I wouldn't bat an eye at an 80 at DCA with my high of 76.8, but you are right, nobody was above that 75-77 range. Link to comment Share on other sites More sharing options...
snowfan Posted September 17, 2014 Share Posted September 17, 2014 Quick question: Before I move my Davis station, I want to know if the temp in the shade is considered accurate. Right now I have it on a deck, but in the direct sunlight it gets too warm, and often has strange high temps at 6:00 in the evening due to the angle of the sunlight. I know being near trees will make rain and DP inaccurate, but the temps are most important to me. Also, it has a shield. But, for example, my high temps end up 2 degrees warmer than BWI. An elevated box with vent slats on the sides works well. I believe it was like that at PSU outside the Walker Bldg. Link to comment Share on other sites More sharing options...
Ian Posted September 17, 2014 Share Posted September 17, 2014 Usually I wouldn't bat an eye at an 80 at DCA with my high of 76.8, but you are right, nobody was above that 75-77 range.They listed the high as after 3 so it apparently got back there. Two DC weathebugs hit 79. There is apparently (based on sat pics) gravel that's relatively new in recent years around the sensor. That could potentially impact it. Link to comment Share on other sites More sharing options...
Deck Pic Posted September 17, 2014 Share Posted September 17, 2014 Usually I wouldn't bat an eye at an 80 at DCA with my high of 76.8, but you are right, nobody was above that 75-77 range. They listed the high as after 3 so it apparently got back there. Two DC weathebugs hit 79. There is apparently (based on sat pics) gravel that's relatively new in recent years around the sensor. That could potentially impact it. It was more the time that it hit at...at 1pm most stations were 73-75...I couldn't find a single one even close to 80.....maybe a couple were 77... Link to comment Share on other sites More sharing options...
EastCoast NPZ Posted September 17, 2014 Share Posted September 17, 2014 77F here for the high yesterday. Another stellar morning today. Low 45F. Link to comment Share on other sites More sharing options...
Eskimo Joe Posted September 17, 2014 Share Posted September 17, 2014 An elevated box with vent slats on the sides works well. I believe it was like that at PSU outside the Walker Bldg. Had that on my old weather station and it worked well until the paper wasps decided to move in. Link to comment Share on other sites More sharing options...
snowfan Posted September 17, 2014 Share Posted September 17, 2014 Had that on my old weather station and it worked well until the paper wasps decided to move in. on the inside of the walls with the slats, you can nail down some window screen that would keep them out, but also not affect air flow. Link to comment Share on other sites More sharing options...
T. August Posted September 17, 2014 Author Share Posted September 17, 2014 The problem may be the deck itself rather than the sunlight. I have mine out in the sunniest part of the yard. That may be it, but that's the only full sun area on my property. Link to comment Share on other sites More sharing options...
Bob Chill Posted September 17, 2014 Share Posted September 17, 2014 Sunday and/or Monday looking seasonably warm before the next front followed by some glorious days unless a sneaky vort/wave rides over us. Ensembles are converging on a warm close of Sept and into early Oct. The GOA vortex is going to do a good job pumping plenty of warmth into western and central Canada so our source region for bn will be out of business for a time. Too muddy to tell if we'll have any anomalous warmth. My total wag is 75-80 kinda stuff so there will be few complainers if it goes down like that. Link to comment Share on other sites More sharing options...
EasternUSWX Posted September 17, 2014 Share Posted September 17, 2014 This is one long stretch of boring weather. Hoping winter brings the boom. Link to comment Share on other sites More sharing options...
WxUSAF Posted September 17, 2014 Share Posted September 17, 2014 It's fall. It's supposed to be boring. Link to comment Share on other sites More sharing options...
H2O Posted September 17, 2014 Share Posted September 17, 2014 It's fall. It's supposed to be boring. and dry Link to comment Share on other sites More sharing options...
snowfan Posted September 17, 2014 Share Posted September 17, 2014 Yes...this is the time for boring weather. I want the next 8 weeks to be filled with sunshine, cool breezes and lots of window open weather. I don't want tropical remnants or any other massive rain event. Link to comment Share on other sites More sharing options...
dailylurker Posted September 17, 2014 Share Posted September 17, 2014 We could use some rain. We need it for a good fall color show. Link to comment Share on other sites More sharing options...
StudentOfClimatology Posted September 17, 2014 Share Posted September 17, 2014 Wet Octobers lead to white winters. Link to comment Share on other sites More sharing options...
snowfan Posted September 17, 2014 Share Posted September 17, 2014 Quite the contrary. Rain during the growing season is what we want along with dry, sunny weather in the fall. If we had a drought during the summer, it would be a concern. We didn't and should be fine for fall color. What we want now are plenty of days like today with cool nights. We could use some rain. We need it for a good fall color show. Link to comment Share on other sites More sharing options...
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