Gilbertfly Posted January 5, 2015 Share Posted January 5, 2015 LOT... NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL326 PM CST MON JAN 5 2015THE MAIN ISSUE WILL BE EXTREMELY COLD AIR. WITH THE AREA BETWEEN LOWPRESSURE TO THE EAST AND THE BUILDING HIGH TO THE WEST BREEZY WETSTO NORTHWEST WINDS WILL DEVELOP LATER TUESDAY AND CONTINUE INTOWEDNESDAY NIGHT BEFORE DIMINISHING AND SHIFTING SOUTHWEST. THEINITIAL ISSUE WILL BE BLOWING SNOW AND REDUCED VSBY LEADING TOHAZARDOUS TRAVEL SO WILL NEED TO ASSESS THE NEED FOR A WINTERWEATHER ADVISORY FOR THIS LATER TUESDAY INTO AT LEAST WEDNESDAY.TEMPS WILL FALL TO TO THE SINGLE DIGITS BELOW ZERO TUESDAY NIGHTWITH LITTLE RECOVERY WEDNESDAY...THEN FALL TO -5 TO -15 OR SOWEDNESDAY NIGHT. WILL NEED WIND CHILL HEADLINES FROM TUESDAY NIGHTTHROUGH THURSDAY MORNING. AFTER COORDINATION WITH NEIGHBORS WILLHOLD OFF ON THIS FOR NOW DUE TO THE ARRIVING SNOW EVENT. MOST AREASOF ILLINOIS LOOK TO MEET WARNING CRITERIA AND SOUTHERN AREAS ANDNORTHWEST INDIANA MAY BE IN HIGH END ADVISORY CRITERIA. OVERALLEXPECT WIND CHILLS OF -20 TO AROUND -35 DURING THIS PERIOD WITHLITTLE IMPROVEMENT DURING THE DAY WEDNESDAY. Link to comment Share on other sites More sharing options...
cyclone77 Posted January 5, 2015 Share Posted January 5, 2015 Another adjustment down in the point for here. Now -3 for a high wed, with a low of -18 thu morning. Link to comment Share on other sites More sharing options...
hoosierwx Posted January 5, 2015 Share Posted January 5, 2015 we have a window with WC Warning criteria in my hourly P and C .. for roughly 8 hours...IIRC the criteria is -30 WC's for us Wondering why that would be? I can understand snow advisory and winter storm warnings being different but I would think wind chill would be the same. Maybe more likely to have more winter gear up there? I think -25 is warning criteria here. Link to comment Share on other sites More sharing options...
Chicago Storm Posted January 5, 2015 Share Posted January 5, 2015 Wondering why that would be? I can understand snow advisory and winter storm warnings being different but I would think wind chill would be the same. Maybe more likely to have more winter gear up there? I think -25 is warning criteria here.Wind chill headlines are different for the same reason snow headlines are. Link to comment Share on other sites More sharing options...
hoosierwx Posted January 5, 2015 Share Posted January 5, 2015 Wind chill headlines are different for the same reason snow headlines are. Sorry, I think my post was not clear. My question was why would WC advisory and warning criteria be different among WFO's? Link to comment Share on other sites More sharing options...
Gilbertfly Posted January 5, 2015 Share Posted January 5, 2015 Sorry, I think my post was not clear. My question was why would WC advisory and warning criteria be different among WFO's? as an extreme example.... NWS Tallahassee CWA .... Wind Chill Advisory with wind chills of 15°F or lower for 2 or more hours. compare that to your criteria for a Wind Chill Advisory in your WFO... Link to comment Share on other sites More sharing options...
Chicago Storm Posted January 5, 2015 Share Posted January 5, 2015 Sorry, I think my post was not clear. My question was why would WC advisory and warning criteria be different among WFO's?Because as you go north harsh conditions occur more often and people are used to and more prepared for it.Same thing with snow headlines. Then in the summer for heat headlines it's the same as well, though flipped. Link to comment Share on other sites More sharing options...
hoosierwx Posted January 5, 2015 Share Posted January 5, 2015 as an extreme example.... NWS Tallahassee CWA .... Wind Chill Advisory with wind chills of 15°F or lower for 2 or more hours. compare that to your criteria for a Wind Chill Advisory in your WFO... OK. I was just wondering if it was a comfort issue or actual difference in danger of frostbite/exposure. Thanks. Link to comment Share on other sites More sharing options...
hoosierwx Posted January 5, 2015 Share Posted January 5, 2015 Because as you go north harsh conditions occur more often and people are used to and more prepared for it. Same thing with snow headlines. Then in the summer for heat headlines it's the same as well, though flipped. Gotcha. That makes sense. Link to comment Share on other sites More sharing options...
Hoosier Posted January 6, 2015 Author Share Posted January 6, 2015 Some 12z output for Thursday morning lows for LAF: GFS 2m: -13F NAM 2m: -14F MAV: -15F MET: -12F Winds might stay up a little to prevent an all-out tank, but we'll see. Link to comment Share on other sites More sharing options...
Gilbertfly Posted January 6, 2015 Share Posted January 6, 2015 high temp Wed via P & C is now -5 edit: and has changed to -6 now Link to comment Share on other sites More sharing options...
cyclone77 Posted January 6, 2015 Share Posted January 6, 2015 Point forecast has a high of -7 tomorrow here. We're probably gonna be warmer than that at midnight, so -7 prob won't be the true high for the day. Should go below zero by midnight. -17 tomorrow night. Link to comment Share on other sites More sharing options...
Chinook Posted January 7, 2015 Share Posted January 7, 2015 Wind chills across northern Indiana should be around -30F as per this wind-chill output for the NAM. Link to comment Share on other sites More sharing options...
IWXwx Posted January 7, 2015 Share Posted January 7, 2015 Already cold enough. FORT WAYNE CLOUDY 7 0 73 W22 30.23S WCI -14 HUNTINGTON + MOCLDY 7 -3 63 SW14G21 30.23F WCI -10 Link to comment Share on other sites More sharing options...
Chicago WX Posted January 7, 2015 Share Posted January 7, 2015 Up to 8 here. I just got back from a 3 mile jebwalk. Wind is coming up a little, so a little sting on the face...but not too bad. Yet. Link to comment Share on other sites More sharing options...
afterimage Posted January 7, 2015 Share Posted January 7, 2015 IPS has closed for tomorrow. And Indy mayor given a 2 hour delay to employees. . 30 below is worth respecting Link to comment Share on other sites More sharing options...
Baum Posted January 7, 2015 Share Posted January 7, 2015 Wife's school called for tommorow. Wimpification of America continues.. Link to comment Share on other sites More sharing options...
Chicago Storm Posted January 7, 2015 Share Posted January 7, 2015 Chicago Public Scools are closed tomorrow. Link to comment Share on other sites More sharing options...
Geos Posted January 7, 2015 Share Posted January 7, 2015 -4° forecast for tomorrow here. -12° at night. So far WI schools are open. It's going to be cold, but quite like last January. I always thought the wind chill warnings and wind chill advisory were largely based off of the time it takes to get frostbite. Link to comment Share on other sites More sharing options...
cyclone77 Posted January 7, 2015 Share Posted January 7, 2015 Point forecast has a high of -7 tomorrow here. We're probably gonna be warmer than that at midnight, so -7 prob won't be the true high for the day. Should go below zero by midnight. -17 tomorrow night. Wrong. Looks like we're gonna have a cheap high above zero after midnight since temps are languishing this evening. So no subzero highs officially in the book here with this outbreak. Unofficially it's gonna be an extremely cold day though with temps well below zero all day tomorrow and strong winds. Link to comment Share on other sites More sharing options...
Chitown Storm Posted January 7, 2015 Share Posted January 7, 2015 When schools close in MN you know its damn cold. Thermo this morning reads -9F, but the WC is the real deal. Not sure I've ever felt a sting like this morning. The wind is brutal. Blizzard watches for SW MN where the wind blows freely in the open country. Link to comment Share on other sites More sharing options...
Chicago WX Posted January 7, 2015 Share Posted January 7, 2015 Public schools in the LAF closed today. Private schools open. EDIT: nope, they closed now too. Wind blowing the snow all over the place here this morning. I wouldn't want to be traveling in the rural areas today. Link to comment Share on other sites More sharing options...
A-L-E-K Posted January 7, 2015 Share Posted January 7, 2015 only -1 on the bank clock this morning didn't feel that bad worst climo Link to comment Share on other sites More sharing options...
michsnowfreak Posted January 7, 2015 Share Posted January 7, 2015 When schools close in MN you know its damn cold. Thermo this morning reads -9F, but the WC is the real deal. Not sure I've ever felt a sting like this morning. The wind is brutal. Blizzard watches for SW MN where the wind blows freely in the open country. Where were you one year ago today? Link to comment Share on other sites More sharing options...
RCNYILWX Posted January 7, 2015 Share Posted January 7, 2015 Will be interesting to see if winds decouple tonight. Last year, warm advection aloft and unfavorable position of the surface high (looking at NARR reanalysis) prevented much of a drop off during the early morning hours of 1/7 after the core of the cold pushed east. Tonight the surface high will be to the southwest again but stronger and closer to the region, so it might be a better setup for radiational cooling. If the boundary layer doesn't decouple, temperatures are unlikely to get as cold as forecast tonight given warm advection aloft. Link to comment Share on other sites More sharing options...
Chitown Storm Posted January 7, 2015 Share Posted January 7, 2015 Where were you one year ago today? Trust me, I'll never forget last year! But I don't recall the wind biting quite as hard. This morning was literally an instant pain. Makes one feel alive. Lol. Link to comment Share on other sites More sharing options...
michsnowfreak Posted January 7, 2015 Share Posted January 7, 2015 Trust me, I'll never forget last year! But I don't recall the wind biting quite as hard. This morning was literally an instant pain. Makes one feel alive. Lol. Maybe it was worse in Detroit than Minneapolis (or Chicago?) last Jan 6/7th. I see MSP is -9F WC -31F right now. The wind chills peaked at -50F and there were several hours over -40F here last Jan 6/7. I used to always think once it got to a certain cold it would all feel the same, but I was wrong. That sting last year was unlike anything else Id ever felt. I took my gloves off to take that pic of the arctic sunset after the heavy snow and my hands were exposed for MAYBE 8-9 seconds, and when I got in the house they burned. Wind chills "only" expected at -15F to -25F this go around. Jan 6, 2014 sunset - temp -10Fand dropping, WC -39F at time of pic Link to comment Share on other sites More sharing options...
hawkeye_wx Posted January 7, 2015 Share Posted January 7, 2015 This morning is definitely not as cold as it was a year ago(speaking just for myself, in CR). Last year I went out to clear the snow drifts from the driveway and after five minutes I was hurting. I couldn't stay out longer than ten minutes. This morning I was able to stay outside for 30-40 minutes and finish two driveways/sidewalks with no real problem. It's still very cold, but I'm pretty sure last year was 5-10 degrees colder with a wind that was 10 mph stronger. Again, just talking about my backyard. Link to comment Share on other sites More sharing options...
Chitown Storm Posted January 7, 2015 Share Posted January 7, 2015 Alright alright, last year felt colder. Maybe my tolerance level has gone down. Ha! Probably not good since I moved north... BTW....sweet pic Snowfreak! Great shot. Link to comment Share on other sites More sharing options...
Chicago WX Posted January 7, 2015 Share Posted January 7, 2015 Cold is kinda meh here, compared to what was forecasted. Temps easily rising every hour. Wind of course makes it a little nasty. Imagine overnight mins are going to come in warmer as well in the LAF. But, still solid cold compared to what we've had thus far this winter. Link to comment Share on other sites More sharing options...
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