beavis1729 Posted January 21, 2013 Share Posted January 21, 2013 I know I'm probably ...but the cold air mass currently sitting over the upper midwest is really amazing. The Grand Marais airport in NE MN (elevation around 1700') is -22F at 1 PM CST, with a wind chill in the -40s. The 850 mb temp is probably around -34C. I can't remember the last time I saw a temperature in the lower 48 that cold during peak daytime heating. Maybe Feb 1996? I don't remember it that cold during the day in mid-Jan 2009, during that arctic outbreak. Of course the overnight mins were very impressive in mid-Jan 2009 due to the snow cover. Link to comment Share on other sites More sharing options...
Geos Posted January 21, 2013 Share Posted January 21, 2013 It's amazing that it the temperature has slid a couple degrees during the middle of the day here with no snow cover! 7° right now. WC ~ -10° Link to comment Share on other sites More sharing options...
Hoosier Posted January 21, 2013 Share Posted January 21, 2013 You could probably subtract 5-10 degrees from these temps if there was solid snowcover. Link to comment Share on other sites More sharing options...
cyclone77 Posted January 21, 2013 Share Posted January 21, 2013 Temp has only managed to rebound back up to 9 after bottoming out at 1 above mid-morning. That's with full sun. Temp may yet tag 10 before tailing off. Point calls for -3 tonight, but 4km NAM has us holding at zero. Gonna be close, but it looks like we won't be able to sneak through the winter without a subzero reading. Link to comment Share on other sites More sharing options...
Hoosier Posted January 21, 2013 Share Posted January 21, 2013 Will be interested to see if GRB can register an 850 mb temp of -30C on the 00z sounding. If this is correct there have only been 17 obs in about 50 years. Models suggest it will be close. Link to comment Share on other sites More sharing options...
daddylonglegs Posted January 21, 2013 Share Posted January 21, 2013 Cyclone- Pretty good... 1F here... and that is with full sun and no snow. Link to comment Share on other sites More sharing options...
daddylonglegs Posted January 21, 2013 Share Posted January 21, 2013 Don't remember seeing a -46F ever on these maps... Link to comment Share on other sites More sharing options...
snowstormcanuck Posted January 21, 2013 Share Posted January 21, 2013 Don't remember seeing a -46F ever on these maps... Dump time 1240. Good to know the map's regular. Link to comment Share on other sites More sharing options...
daddylonglegs Posted January 21, 2013 Share Posted January 21, 2013 That is Island Lake, Manitoba...which dropped to -46F...looks like that is a new record for them: http://www.wunderground.com/history/airport/CYIV/2013/1/21/DailyHistory.html?req_city=NA&req_state=NA&req_statename=NA Link to comment Share on other sites More sharing options...
DAFF Posted January 21, 2013 Share Posted January 21, 2013 -46 is very impresive cold!! Few in our region have ever experienced real temps of that magnitude, me included. With wind chill perhaps.... Link to comment Share on other sites More sharing options...
michsnowfreak Posted January 21, 2013 Share Posted January 21, 2013 I am interested to see if the snowcover has localized effects on temps in SE MI tonight. The entire region saw at least a dusting, but the I-94 corridor (and probably parts of OC ) have 1" to maybe 2" on the ground. Link to comment Share on other sites More sharing options...
Brewers Posted January 21, 2013 Share Posted January 21, 2013 The temperature has been holding steady around 5° all day. A subzero low looks likely, the question is how low. Link to comment Share on other sites More sharing options...
michsnowfreak Posted January 21, 2013 Share Posted January 21, 2013 Feels frigid outside. Even the sunset looked cold! The sky in the left side of the pic is clear...the right side of the pic the sky is actually a snow cloud in the distance. Link to comment Share on other sites More sharing options...
WestMichigan Posted January 21, 2013 Share Posted January 21, 2013 Started the day at 14 around 6:00AM and it dropped all day to 8° at 5:00PM. WOnder how much cloud cover and the lake will help keep us warm tonight? Link to comment Share on other sites More sharing options...
cyclone77 Posted January 21, 2013 Share Posted January 21, 2013 Weird having such a cold day with no snow cover. From inside looking out it looks like November, but outside it feels like January. Link to comment Share on other sites More sharing options...
cyclone77 Posted January 21, 2013 Share Posted January 21, 2013 You can tell the folks at DVN are bored out of their minds. Never seen this much effort put into a flurry/very light snow forecast. Pretty impressive actually. AT 18Z/21 FLURRIES AND SOME -SN WHERE OCCURRING ACROSS PARTS OFNE/SD. CAREFUL ANALYSIS OF WHAT IS GOING ON INDICATES PWATS OF ATLEAST 0.25 INCH OR 0.5-1 G/KG OF MOISTURE WITH WIND/MOISTURECONVERGENCE IN THE 800-900MB LAYER. CONDENSATION PRESSURE DEFICITSIN THE SAME LAYER WERE ALSO 30 OR LESS WHILE 700MB RH WAS 90 PERCENTOR HIGHER WITH A THETA E GRADIENT.MOVING THESE FEATURES INTO THE FUTURE BRINGS THEM ACROSS THE CWFATUESDAY NIGHT BUT THE WIND/MOISTURE CONVERGENCE WEAKENS IN AMAJORITY OF THE MODELS. IT IS POSSIBLE THAT MODEL SMOOTHING OF THESESUBTLE FEATURES IS OCCURRING. IF ACTUAL -SN OCCURS WITH THE FLURRIESTUES NIGHT THERE IS A GOOD PROBABILITY THAT IT WILL BE IN BANDS.GOING ON THE SCENARIO OF BANDED -SN OCCURRING AND USING THE 700MB RHAS A TIMING FEATURE...FLURRIES WITH A BAND OF -SN WILL MOVE INTO THECWFA TUESDAY EVENING AND COVER ALL BUT THE NORTHEAST QUARTER OF THECWFA BY MIDNIGHT. AFTER MIDNIGHT THE FLURRY ACTIVITY WILL SLOWLY INTHE SOUTHWEST WITH ONE OR MORE NARROW BANDS OF -SN ACROSS THENORTHERN CWFA. WHERE -SN DOES OCCUR IT SHOULD BE NO MORE THAN ADUSTING.FLURRIES OVER ROUGHLY THE NORTHEAST HALF OF THE CWFA AT SUNRISEWEDNESDAY WILL END DURING THE MORNING AS CONDENSATION PRESSUREDEFICITS RISE. SKIES ARE THEN EXPECTED TO CLEAR DURING THE AFTERNOONAS THE NEXT COLD HIGH PRESSURE BUILDS INTO THE WESTERN GREAT LAKES. Link to comment Share on other sites More sharing options...
SchaumburgStormer Posted January 21, 2013 Share Posted January 21, 2013 Holding steady at 6 degrees. Light wind makes it brutally cold outside right now. Link to comment Share on other sites More sharing options...
mnweather Posted January 21, 2013 Share Posted January 21, 2013 -14 right now after a high of -7. Link to comment Share on other sites More sharing options...
chuckster2013 Posted January 21, 2013 Share Posted January 21, 2013 Wow! 18z Gfs is brutal beyond 168 hrs. Rain for almost everyone. Link to comment Share on other sites More sharing options...
Chicago WX Posted January 22, 2013 Share Posted January 22, 2013 9º/-6º at LAF at 7:00pm. Staticky. Link to comment Share on other sites More sharing options...
Geos Posted January 22, 2013 Share Posted January 22, 2013 Started the day at 14 around 6:00AM and it dropped all day to 8° at 5:00PM. WOnder how much cloud cover and the lake will help keep us warm tonight? According to WGN you got 5" today...? so far. You can tell the folks at DVN are bored out of their minds. Never seen this much effort put into a flurry/very light snow forecast. Pretty impressive actually. AT 18Z/21 FLURRIES AND SOME -SN WHERE OCCURRING ACROSS PARTS OFNE/SD. CAREFUL ANALYSIS OF WHAT IS GOING ON INDICATES PWATS OF ATLEAST 0.25 INCH OR 0.5-1 G/KG OF MOISTURE WITH WIND/MOISTURECONVERGENCE IN THE 800-900MB LAYER. CONDENSATION PRESSURE DEFICITSIN THE SAME LAYER WERE ALSO 30 OR LESS WHILE 700MB RH WAS 90 PERCENTOR HIGHER WITH A THETA E GRADIENT.MOVING THESE FEATURES INTO THE FUTURE BRINGS THEM ACROSS THE CWFATUESDAY NIGHT BUT THE WIND/MOISTURE CONVERGENCE WEAKENS IN AMAJORITY OF THE MODELS. IT IS POSSIBLE THAT MODEL SMOOTHING OF THESESUBTLE FEATURES IS OCCURRING. IF ACTUAL -SN OCCURS WITH THE FLURRIESTUES NIGHT THERE IS A GOOD PROBABILITY THAT IT WILL BE IN BANDS.GOING ON THE SCENARIO OF BANDED -SN OCCURRING AND USING THE 700MB RHAS A TIMING FEATURE...FLURRIES WITH A BAND OF -SN WILL MOVE INTO THECWFA TUESDAY EVENING AND COVER ALL BUT THE NORTHEAST QUARTER OF THECWFA BY MIDNIGHT. AFTER MIDNIGHT THE FLURRY ACTIVITY WILL SLOWLY INTHE SOUTHWEST WITH ONE OR MORE NARROW BANDS OF -SN ACROSS THENORTHERN CWFA. WHERE -SN DOES OCCUR IT SHOULD BE NO MORE THAN ADUSTING.FLURRIES OVER ROUGHLY THE NORTHEAST HALF OF THE CWFA AT SUNRISEWEDNESDAY WILL END DURING THE MORNING AS CONDENSATION PRESSUREDEFICITS RISE. SKIES ARE THEN EXPECTED TO CLEAR DURING THE AFTERNOONAS THE NEXT COLD HIGH PRESSURE BUILDS INTO THE WESTERN GREAT LAKES. I've never seen such a long discussion on a simple -SN and flurry event! Nice shot of the -SN that fell over the weekend in southern IA. Link to comment Share on other sites More sharing options...
cyclone77 Posted January 22, 2013 Share Posted January 22, 2013 According to WGN you got 5" today...? so far. I've never seen such a long discussion on a simple -SN and flurry event! Nice shot of the -SN that fell over the weekend in southern IA. 012013snow.jpg Nice. On the expanded view you can see small streaks of snow that fell from the snow showers early today. Those extend into Indiana. Down to 6 already. Link to comment Share on other sites More sharing options...
Geos Posted January 22, 2013 Share Posted January 22, 2013 4°/-6° here right now with a WC between -15 - -20°. Saw a couple people today with those Russian style fur hats on! - First time I've seen those on people since 2009 I think. Link to comment Share on other sites More sharing options...
Hoosier Posted January 22, 2013 Share Posted January 22, 2013 850 mb temp was -30.7C on the 00z GRB sounding!!! (3 exclamation points Geos style) Link to comment Share on other sites More sharing options...
mnweather Posted January 22, 2013 Share Posted January 22, 2013 Point and click tonight is -17. Im already there. Link to comment Share on other sites More sharing options...
daddylonglegs Posted January 22, 2013 Share Posted January 22, 2013 Hit 2F here in La Crosse... With almost sun all day. Sitting at -1F Temp sure didn't move today. To think of what we would be dealing with if we had a glacier in place. Link to comment Share on other sites More sharing options...
Chicago WX Posted January 22, 2013 Share Posted January 22, 2013 850 mb temp was -30.7C on the 00z GRB sounding!!! (3 exclamation points Geos style) Very impressive. Link to comment Share on other sites More sharing options...
IWXwx Posted January 22, 2013 Share Posted January 22, 2013 9º/-6º at LAF at 7:00pm. Staticky. I know, right? I kissed my wife awhile ago and be both about got electrocuted. Point and click tonight is -17. Im already there. I love winter and all, but those MN temps are a little much for me. I'm trying to decide if it would be worth it to receive the amount of snow that you get. Link to comment Share on other sites More sharing options...
dmc76 Posted January 22, 2013 Share Posted January 22, 2013 Link to comment Share on other sites More sharing options...
RCNYILWX Posted January 22, 2013 Share Posted January 22, 2013 Surface high positioning looks like it was pretty good on 1/27/03 The Arctic high was stronger, but 1/23/03 is the best analog for tonight: Already down to 4 at RFD and 8 at ORD, not too shabby. We're forecasting -5 at RFD and -3 at ORD. Link to comment Share on other sites More sharing options...
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