Powerball Posted September 11, 2013 Share Posted September 11, 2013 Getting thunder now. Severe T'Storm Watch in effect until 12 AM EST. Link to comment Share on other sites More sharing options...
Powerball Posted September 11, 2013 Share Posted September 11, 2013 Severe T'storm Warning now. Getting some fairly solid non-severe winds. Streetlights are on. Link to comment Share on other sites More sharing options...
michsnowfreak Posted September 11, 2013 Share Posted September 11, 2013 There's barely any development around DTW compared to many of the other major airports in the US. A couple of sub divisions and farm fields isn't noteworthy compared to industrial parks and gridded street developments elsewhere. What could make a difference is a sea of concrete tarmacs and new runways near a thermometer that might not have been around in the 60s. And on another note, the warmer overnight lows are already built into the climate normals. It should be several degrees colder at FNT than DTW each night. It has to be the concrete. I cant think of anything else. As you said, it is not THAT built up near DTW. Tons of fields and wooded areas right by the airport. I was just looking over the temp comparisons for DTW and DET. In the early days of DTW used to average between 0-0.5F warmer than DET for high temps but 2-3F COLDER for low temps. The average yearly temp has always averaged 0.8-1.3F colder at DTW than DET (entirely due to lows, as highs even averaged a tad warmer than DET). Even the most recent set of normals, 1981-2010, has DTW and DETs yearly temp averaging identical high temps but DTW averaging 1.7F colder for low temps, so yearly temp 0.9F colder at DTW. YET in recent years thats is NOT the case. Perhaps its where they moved the ASOS by the new terminal? In 2012, DTWs highs averaged 1.0F higher than DET and their lows just 0.2F colder than DET, so yearly temp was 0.3F WARMER at DTW than DET (that NEVER EVER used to happen..NEVER). So far in 2013...through August....DTWs highs are averaging 0.7F warmer than DETs...but the lows are ALSO averaging WARMER...by 0.3F!! It doesnt sound like much, but it is simply incredible to look at the climate history, as well as locations of the two stations, and see that DTW is actually averaging WARMER low temps than DET. Forty years ago, on any clear, calm night (or humid summer night) you could count on DTW's lows being 7-10F colder than DET. My how times have changed.... Link to comment Share on other sites More sharing options...
SpartyOn Posted September 11, 2013 Share Posted September 11, 2013 It has to be the concrete. I cant think of anything else. As you said, it is not THAT built up near DTW. Tons of fields and wooded areas right by the airport. I was just looking over the temp comparisons for DTW and DET. In the early days of DTW used to average between 0-0.5F warmer than DET for high temps but 2-3F COLDER for low temps. The average yearly temp has always averaged 0.8-1.3F colder at DTW than DET (entirely due to lows, as highs even averaged a tad warmer than DET). Even the most recent set of normals, 1981-2010, has DTW and DETs yearly temp averaging identical high temps but DTW averaging 1.7F colder for low temps, so yearly temp 0.9F colder at DTW. YET in recent years thats is NOT the case. Perhaps its where they moved the ASOS by the new terminal? In 2012, DTWs highs averaged 1.0F higher than DET and their lows just 0.2F colder than DET, so yearly temp was 0.3F WARMER at DTW than DET (that NEVER EVER used to happen..NEVER). So far in 2013...through August....DTWs highs are averaging 0.7F warmer than DETs...but the lows are ALSO averaging WARMER...by 0.3F!! It doesnt sound like much, but it is simply incredible to look at the climate history, as well as locations of the two stations, and see that DTW is actually averaging WARMER low temps than DET. Forty years ago, on any clear, calm night (or humid summer night) you could count on DTW's lows being 7-10F colder than DET. My how times have changed.... DET probably has lost much of its UHI effect over years of decline. Google earth the city of detroit and you can see plenty of open fields and plots. Link to comment Share on other sites More sharing options...
Jonger Posted September 11, 2013 Share Posted September 11, 2013 It has to be the concrete. I cant think of anything else. As you said, it is not THAT built up near DTW. Tons of fields and wooded areas right by the airport. I was just looking over the temp comparisons for DTW and DET. In the early days of DTW used to average between 0-0.5F warmer than DET for high temps but 2-3F COLDER for low temps. The average yearly temp has always averaged 0.8-1.3F colder at DTW than DET (entirely due to lows, as highs even averaged a tad warmer than DET). Even the most recent set of normals, 1981-2010, has DTW and DETs yearly temp averaging identical high temps but DTW averaging 1.7F colder for low temps, so yearly temp 0.9F colder at DTW. YET in recent years thats is NOT the case. Perhaps its where they moved the ASOS by the new terminal? In 2012, DTWs highs averaged 1.0F higher than DET and their lows just 0.2F colder than DET, so yearly temp was 0.3F WARMER at DTW than DET (that NEVER EVER used to happen..NEVER). So far in 2013...through August....DTWs highs are averaging 0.7F warmer than DETs...but the lows are ALSO averaging WARMER...by 0.3F!! It doesnt sound like much, but it is simply incredible to look at the climate history, as well as locations of the two stations, and see that DTW is actually averaging WARMER low temps than DET. Forty years ago, on any clear, calm night (or humid summer night) you could count on DTW's lows being 7-10F colder than DET. My how times have changed.... DET probably has lost much of its UHI effect over years of decline. Google earth the city of detroit and you can see plenty of open fields and plots. The city has lost people, but the structures still remain for the most part. Go to wundermap and watch the PWSs in SE Michigan, its quite obvious the entire eastern Oakland and all of Wayne county are almost always warmer. Wundermaps network and historical features are absolutely amazing. Link to comment Share on other sites More sharing options...
Powerball Posted September 11, 2013 Share Posted September 11, 2013 DET probably has lost much of its UHI effect over years of decline. Google earth the city of detroit and you can see plenty of open fields and plots. Good point. Me and michsnowfreak discussed that before about DET. Pretty nice light show. It's pitch black out. Lights went out a couple times but came back on. Excellent storm!!! Officially the best of the season so far. Link to comment Share on other sites More sharing options...
DAFF Posted September 11, 2013 Share Posted September 11, 2013 Also remember when a city has building booms developers tended to clear cut plots rather than work around existing vegetation. With 70 years or so passing these clear cut areas show true signs of reverting back to the wild. Trees are bigger, asphalt is grown in with green in the cracks and the heating element is turned down from the sun reduction of heating man made materials. Excited for the heat of the last few days to be gone. Working outside was no fun. Link to comment Share on other sites More sharing options...
cyclone77 Posted September 12, 2013 Share Posted September 12, 2013 Ended up picking 0.03" of rain here today. MLI with a gully washing 0.09". Link to comment Share on other sites More sharing options...
SpartyOn Posted September 12, 2013 Share Posted September 12, 2013 Also remember when a city has building booms developers tended to clear cut plots rather than work around existing vegetation. With 70 years or so passing these clear cut areas show true signs of reverting back to the wild. Trees are bigger, asphalt is grown in with green in the cracks and the heating element is turned down from the sun reduction of heating man made materials. Excited for the heat of the last few days to be gone. Working outside was no fun. This is a good point. The UHI is far more real by DTW than DET. Areas near and around DET have reverted to open fields and woodlots. DTW also having consistant jet engines belching out heated gases almost 24/7, something that DET now lacks. Link to comment Share on other sites More sharing options...
Geos Posted September 12, 2013 Share Posted September 12, 2013 The humidity needs to go and never come back this year! 76/68 outside right now. Still several more hours before the front gets here. 81° for the high. Link to comment Share on other sites More sharing options...
Trent Posted September 12, 2013 Share Posted September 12, 2013 This is a good point. The UHI is far more real by DTW than DET. Areas near and around DET have reverted to open fields and woodlots. DTW also having consistant jet engines belching out heated gases almost 24/7, something that DET now lacks. No. Look at 2 a mile radius of DTW and DET. There are leaps and bounds more vegetation and greenspace around DTW. Just because a few blocks of houses have been removed near DET doesn't negate the UHI. The area around DTW is one of the least built up areas of Wayne County. Link to comment Share on other sites More sharing options...
SpartyOn Posted September 12, 2013 Share Posted September 12, 2013 DTW also being south of other sites and it being known for downsloping effects gives it an added plus. More than anything its location of being further south makes a difference. Link to comment Share on other sites More sharing options...
Jonger Posted September 12, 2013 Share Posted September 12, 2013 I have it saved on my PC, but I'll post a compilation of wunderground maps I saved from 4 am days in the month of June. DTW runways are visible several hundred miles into space, its hard to comprehend how much concrete there is at DTW, but its square miles of pavement. Anyone have the exact spot of the ASOS at DTW? Link to comment Share on other sites More sharing options...
Geos Posted September 12, 2013 Share Posted September 12, 2013 Drier air starting to filter in finally. Still pretty warm out though. Average High is now 73°. Link to comment Share on other sites More sharing options...
Chicago Storm Posted September 12, 2013 Share Posted September 12, 2013 Another one... Low temp was 75 at ORD on Wed, which broke the record high min temp of 73 (1961). Link to comment Share on other sites More sharing options...
Geos Posted September 12, 2013 Share Posted September 12, 2013 Low 68° up this way for Wednesday. Link to comment Share on other sites More sharing options...
Hoosier Posted September 12, 2013 Share Posted September 12, 2013 Made it to 96 yesterday so back to back highs of 96. Pretty impressive for this time of year. Raw model temps have us flirting with sub 40 Saturday morning and MOS is just a little warmer. Given LAF's propensity to radiate well, I wonder if we might pull it off. The ground has really dried out which could help the cause. Link to comment Share on other sites More sharing options...
cyclone77 Posted September 12, 2013 Share Posted September 12, 2013 Dewpoint is down to 55 with a fresh north breeze. Feels fantastic out there. Link to comment Share on other sites More sharing options...
Geos Posted September 12, 2013 Share Posted September 12, 2013 Just about to under go the late wind shift to the north east. Sitting at 74°/59° Probably a bit too cool, but I'd take mid 40s! Link to comment Share on other sites More sharing options...
A-L-E-K Posted September 12, 2013 Share Posted September 12, 2013 overperformer at 81 Link to comment Share on other sites More sharing options...
daddylonglegs Posted September 12, 2013 Author Share Posted September 12, 2013 Today= A++++++++++++++ Link to comment Share on other sites More sharing options...
Geos Posted September 12, 2013 Share Posted September 12, 2013 Still warm, but dry out. Seeing cells fire in eastern WI along the wind shift line. Skilling calling for LE Showers tonight. Link to comment Share on other sites More sharing options...
cyclone77 Posted September 12, 2013 Share Posted September 12, 2013 Just about to under go the late wind shift to the north east. Sitting at 74°/59° Probably a bit too cool, but I'd take mid 40s! That model shows scattered areas of upper 30s around northern IL Sat morning, including here. Up to 80 here, but with the dew now down to 49 it doesn't feel warm at all. Link to comment Share on other sites More sharing options...
wisconsinwx Posted September 12, 2013 Share Posted September 12, 2013 Getting a pop up shower right now, with some heavier rain/t'storms to the south and west. Link to comment Share on other sites More sharing options...
A-L-E-K Posted September 12, 2013 Share Posted September 12, 2013 WI storms actually look pretty decent, might make for some decent shots over the lake later. Link to comment Share on other sites More sharing options...
magoos0728 Posted September 12, 2013 Share Posted September 12, 2013 Tornado sirens Kenosha County Link to comment Share on other sites More sharing options...
Chicago Storm Posted September 12, 2013 Share Posted September 12, 2013 ENW reporting a waterspout... KENW 121822Z 33010G21KT 10SM +FC BKN040 26/14 A2998 RMK WATERSPOUT B20 AO2 Link to comment Share on other sites More sharing options...
Geos Posted September 12, 2013 Share Posted September 12, 2013 Tornado sirens Kenosha County Marine warning alarm most likely. Link to comment Share on other sites More sharing options...
Chicago Storm Posted September 12, 2013 Share Posted September 12, 2013 MKE TDWR shows that the first couplet/waterspout drifted SE and then became nearly stationary as it occluded. New couplet has formed ESE of Winthrop Harbor. Link to comment Share on other sites More sharing options...
Chicago Storm Posted September 12, 2013 Share Posted September 12, 2013 Link to comment Share on other sites More sharing options...
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