Chris78 Posted February 24, 2022 Share Posted February 24, 2022 28 degrees coming over the Catoctins at 830. With some evaporational cooling I would think it will easily be 25-26 up there. Gonna be nasty up there later today/tonight. 2 Link to comment Share on other sites More sharing options...
George BM Posted February 24, 2022 Share Posted February 24, 2022 Light rain. Herndon, VA. Link to comment Share on other sites More sharing options...
Herb@MAWS Posted February 24, 2022 Share Posted February 24, 2022 A 30.40 barometer and Arctic high to the north. Still can’t seem to get below 35 yet in my backyard. Will have to rely on precip onset to pull down cold air aloft. Link to comment Share on other sites More sharing options...
MN Transplant Posted February 24, 2022 Share Posted February 24, 2022 20 minutes ago, MN Transplant said: IAD sounding has a thin, but stout, cold layer from 900-950. Will be interesting to see if it is enough to refreeze (sleet). PRES HGHT TEMP DWPT RELH MIXR DRCT SKNT THTA THTE THTV hPa m C C % g/kg deg knot K K K ----------------------------------------------------------------------------- 1019.0 93 2.2 -4.8 60 2.64 25 6 273.9 281.3 274.3 1000.0 238 0.4 -6.6 59 2.34 25 9 273.6 280.2 273.9 938.0 746 -4.3 -7.6 78 2.31 45 11 273.8 280.3 274.2 933.0 789 -4.7 -7.7 80 2.31 39 12 273.8 280.4 274.2 929.0 823 -3.5 -12.5 50 1.58 35 13 275.4 280.0 275.6 926.0 848 -2.5 -13.5 43 1.46 28 13 276.7 281.0 276.9 925.0 857 -2.3 -13.3 43 1.49 25 13 276.9 281.4 277.2 921.0 891 -1.9 -12.9 43 1.55 13 13 277.7 282.3 278.0 914.0 952 -1.7 -10.7 50 1.86 352 13 278.5 284.0 278.8 911.0 978 -1.5 -6.5 69 2.59 343 13 279.0 286.4 279.4 908.0 1005 -0.7 -3.6 81 3.24 334 13 280.1 289.3 280.6 905.0 1031 2.0 -1.6 77 3.78 325 13 283.1 293.9 283.8 903.0 1049 2.0 -1.5 78 3.81 323 13 283.3 294.2 283.9 886.0 1202 1.3 -0.9 85 4.05 305 10 284.1 295.8 284.8 876.0 1293 0.9 -0.6 90 4.20 275 8 284.6 296.7 285.4 873.0 1321 0.8 -0.5 91 4.24 264 10 284.8 297.0 285.5 869.0 1358 1.3 0.2 93 4.50 250 13 285.7 298.6 286.5 865.0 1395 1.8 1.0 94 4.78 248 16 286.6 300.3 287.4 860.0 1442 2.8 1.3 90 4.91 245 20 288.1 302.3 289.0 858.0 1461 3.4 -0.6 75 4.29 244 21 288.9 301.5 289.7 856.0 1480 3.6 0.7 81 4.73 243 23 289.3 303.1 290.1 853.0 1508 3.8 -2.2 65 3.83 242 25 289.8 301.1 290.5 852.0 1518 3.8 -0.3 75 4.41 241 26 289.9 302.9 290.7 851.0 1527 3.8 1.4 84 5.00 241 26 290.0 304.6 290.9 850.0 1537 3.8 1.6 86 5.08 240 27 290.1 304.9 291.0 849.0 1547 3.8 1.5 85 5.05 240 28 290.2 304.9 291.1 847.0 1566 4.6 -1.4 65 4.09 240 29 291.2 303.4 292.0 845.0 1585 5.2 -1.8 61 3.98 240 30 292.1 303.9 292.8 844.0 1595 5.2 -0.8 65 4.29 240 30 292.2 304.9 292.9 842.0 1614 5.0 2.3 83 5.39 240 31 292.2 308.0 293.1 838.0 1653 5.0 3.7 91 5.99 241 31 292.6 310.1 293.6 830.0 1731 4.4 4.4 100 6.36 242 32 292.7 311.3 293.9 814.0 1890 3.4 3.0 97 5.87 245 34 293.3 310.5 294.3 811.0 1920 3.6 -0.2 76 4.67 246 34 293.8 307.7 294.6 810.0 1930 3.6 -0.5 75 4.58 246 34 293.9 307.6 294.7 1 1 Link to comment Share on other sites More sharing options...
usedtobe Posted February 24, 2022 Share Posted February 24, 2022 The temp and dewpoint at 830 mb looks a tad warm for refreezing so it will be interesting to see if you get sleet or not. 1 Link to comment Share on other sites More sharing options...
mappy Posted February 24, 2022 Share Posted February 24, 2022 11 minutes ago, losetoa6 said: Snow flurries mixed with pellets in Parkton can confirm from my house! 3 Link to comment Share on other sites More sharing options...
stormtracker Posted February 24, 2022 Share Posted February 24, 2022 can’t wait for my ice storm. Link to comment Share on other sites More sharing options...
usedtobe Posted February 24, 2022 Share Posted February 24, 2022 39 degrees at 9:00AM in northern Calvert County. I'll happily keep my light non frozen wimpy rain. Link to comment Share on other sites More sharing options...
Baltimorewx Posted February 24, 2022 Share Posted February 24, 2022 WWA has been issued starting immediately for northern counties...probably a CYA kinda deal but its there Link to comment Share on other sites More sharing options...
osfan24 Posted February 24, 2022 Share Posted February 24, 2022 Sleet/rain mix here. Link to comment Share on other sites More sharing options...
Herb@MAWS Posted February 24, 2022 Share Posted February 24, 2022 Sprinkles at onset and 35.6° Link to comment Share on other sites More sharing options...
H2O Posted February 24, 2022 Share Posted February 24, 2022 37.5 and rain. Joy 1 Link to comment Share on other sites More sharing options...
WxUSAF Posted February 24, 2022 Share Posted February 24, 2022 4 minutes ago, Herb@MAWS said: Sprinkles at onset and 35.6° Sounds like some pingers mixed in? Haven’t been outside to confirm Link to comment Share on other sites More sharing options...
weatherCCB Posted February 24, 2022 Share Posted February 24, 2022 Doing what we excel at here in the mid Atlantic 35/27 and rain. Miserable out. Link to comment Share on other sites More sharing options...
Grothar of Herndon Posted February 24, 2022 Share Posted February 24, 2022 35/24 Light COLD rain Link to comment Share on other sites More sharing options...
mappy Posted February 24, 2022 Share Posted February 24, 2022 Ah nevermind. I see they changed the start time from 7pm to 915am. 1 Link to comment Share on other sites More sharing options...
Baltimorewx Posted February 24, 2022 Share Posted February 24, 2022 1 minute ago, mappy said: It was issued very early this morning. Yeah but if im not mistaken the original headlines were for it beginning 7PM tonight. Now, they have the north and west counties starting now. Looks like they touched on it in the 930 discussion. Strong high pressure is building across Canada this morning, advecting colder and drier air into the area. 12z KIAD RAOB suggests dominant precipitation type would be sleet, but observations are showing light rain with temperatures falling to near or below freezing across northern Maryland, far northwestern Virginia and eastern West Virginia. That coupled with hi-res guidance showing freezing rain over those areas has prompted us to start the winter weather headlines now instead of later today. Impacts overall may be limited until this evening given marginal temperatures and seasonally higher sun angle, but icing impacts likely increase quickly after dark. Link to comment Share on other sites More sharing options...
mappy Posted February 24, 2022 Share Posted February 24, 2022 Just now, Baltimorewx said: Yeah but if im not mistaken the original headlines were for it beginning 7PM tonight. Now, they have the north and west counties starting now. Looks like they touched on it in the 930 discussion. Strong high pressure is building across Canada this morning, advecting colder and drier air into the area. 12z KIAD RAOB suggests dominant precipitation type would be sleet, but observations are showing light rain with temperatures falling to near or below freezing across northern Maryland, far northwestern Virginia and eastern West Virginia. That coupled with hi-res guidance showing freezing rain over those areas has prompted us to start the winter weather headlines now instead of later today. Impacts overall may be limited until this evening given marginal temperatures and seasonally higher sun angle, but icing impacts likely increase quickly after dark. yeah i just deleted my post. you're right. it was originally to start at 7pm Link to comment Share on other sites More sharing options...
Jeff B Posted February 24, 2022 Share Posted February 24, 2022 32.7/19.2 and nothing falling from the sky as yet (5 files SW of Hunt Valley in 21136) Link to comment Share on other sites More sharing options...
87storms Posted February 24, 2022 Share Posted February 24, 2022 when will it be ok to break out a nothing burger gif for this storm? Link to comment Share on other sites More sharing options...
87storms Posted February 24, 2022 Share Posted February 24, 2022 i'm sort of kidding, but it's literally been in the 60s for several days in a row leading into this. i suppose trees and such could ice, but there's some factors against impacts here. we'll see. i'd rather it just snow lol. Link to comment Share on other sites More sharing options...
North Balti Zen Posted February 24, 2022 Share Posted February 24, 2022 3 minutes ago, 87storms said: when will it be ok to break out a nothing burger gif for this storm? No? Not up in northern maryland maybe. Link to comment Share on other sites More sharing options...
mappy Posted February 24, 2022 Share Posted February 24, 2022 2 minutes ago, 87storms said: i'm sort of kidding, but it's literally been in the 60s for several days in a row leading into this. i suppose trees and such could ice, but there's some factors against impacts here. we'll see. i'd rather it just snow lol. probably best not to spike a football before the event even gets going. the worst impacts for the northern tier was never forecast to be happening during the day today. it was always later tonight and into tomorrow morning. will it ice a quarter inch or more? no, probably not. But chances are there will be ice, and at least a glaze or more for a good portion of the northern tier folks. 5 Link to comment Share on other sites More sharing options...
87storms Posted February 24, 2022 Share Posted February 24, 2022 1 minute ago, North Balti Zen said: No? Not up in northern maryland maybe. i mean...honest question...how quickly will ground temps freeze after temps the last few days? we're also dealing with daylight mitigating a big drop in temps as well. i'm being imby, but i'm sure far northern and western md will be a different ballgame. Link to comment Share on other sites More sharing options...
WVclimo Posted February 24, 2022 Share Posted February 24, 2022 Pretty decent shower of sleet here. 33/23. Link to comment Share on other sites More sharing options...
mappy Posted February 24, 2022 Share Posted February 24, 2022 7 minutes ago, 87storms said: i mean...honest question...how quickly will ground temps freeze after temps the last few days? we're also dealing with daylight mitigating a big drop in temps as well. i'm being imby, but i'm sure far northern and western md will be a different ballgame. probably about the same time it took for places to accumulate snow on Jan 3 after 2 days of 50/60s temps. maybe a little bit longer given sun angle. Link to comment Share on other sites More sharing options...
87storms Posted February 24, 2022 Share Posted February 24, 2022 8 minutes ago, mappy said: probably best not to spike a football before the event even gets going. the worst impacts for the northern tier was never forecast to be happening during the day today. it was always later tonight and into tomorrow morning. will it ice a quarter inch or more? no, probably not. But chances are there will be ice, and at least a glaze or more for a good portion of the northern tier folks. i was mostly kidding. i've been in this game long enough to know that debby'ing a storm can end up making someone look like an idiot, which is why i rarely do it anymore lol. i really am curious how quickly ground temps, etc., will follow air temps after the mild weather we've had. haven't seen it talked about anywhere, but it does matter. but yes, when dealing with ice, it's better to err on the side of caution...and to also wear shoes that don't make you fall on your ass. not that i would know anything about that. Link to comment Share on other sites More sharing options...
87storms Posted February 24, 2022 Share Posted February 24, 2022 1 minute ago, mappy said: probably about the same time it took for places to accumulate snow on Jan 3 after 2 days of 50/60s temps. maybe a little bit longer given sun angle. i'm not talking about snow. we know ice has a difficult time accumulating on roads here even in early january. Link to comment Share on other sites More sharing options...
mappy Posted February 24, 2022 Share Posted February 24, 2022 1 minute ago, 87storms said: i'm not talking about snow. we know ice has a difficult time accumulating on roads here even in early january. you didn't mention roads. i gave you a general answer for your general question. Link to comment Share on other sites More sharing options...
mappy Posted February 24, 2022 Share Posted February 24, 2022 But anyway, who knows. lol Link to comment Share on other sites More sharing options...
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