Jebman Posted January 19 Share Posted January 19 This is from near Balto https://forecast.weather.gov/product.php?site=LWX&issuedby=LWX&product=AFD&format=CI&version=1&glossary=1&highlight=off .NEAR TERM /THROUGH TONIGHT/... Snow is overspreading the entire region at this time and all the way back through the Ohio Valley. It took a bit to moisten up the column, but most areas starting to report snow now, and it is already beginning to cover area roadways. Low pressure is off the Carolina coast and tracking northeast this morning. The upper level shortwave responsible for this is located over the midwest at this time, but is quickly moving in our direction. It is expected to dive south and east through the day today, with the core of shortwave energy pushing through southern VA. This will put northern VA into central MD in prime position underneath the left exit region of a potent 150+ kt jet streak in the upper levels. Overnight guidance continued an upward trend as far as QPF is concerned, so came up about a half a tenth to a tenth of an inch in that department, given very strong forcing. Given the strong dynamics aloft, an inverted trough axis will likely develop well to the NW of the offshore surface low. With the cold airmass and a deepening DGZ to around 150 mb, snowfall in some areas may very well overperform beneath wherever this trough axis sets up. The overnight guidance was very persistent in the placement of this trough axis from northern VA up into central NJ. This is why an uptick in QPF was noted before. Thus, have decided to upgrade those areas to Winter Storm Warnings for this event. It will likely be very borderline given how progressive the system is, but under the band of heaviest snowfall, some could see rates near an inch per hour at times. Lingering low-level moisture, increasing MUCAPE in the BL (stretching up into a lowering DGZ), and lift via continued PVA ahead of a trailing wave, could cause at least scattered snow shower activity to linger through late Friday afternoon or evening. Overnight hi-res guidance was again persistent in developing some northwest flow streamers as far south and east as the I-95 corridor and I-66 corridor. Worth watching, as some of these bands could produce some locally heavy snowfall in spots. Generally though, expect another coating to an inch from lingering snow showers this afternoon/evening. 3 Link to comment Share on other sites More sharing options...
rjvanals Posted January 19 Share Posted January 19 2.5 so far this SN,26 2 Link to comment Share on other sites More sharing options...
Terpeast Posted January 19 Share Posted January 19 Signs of back building 3 Link to comment Share on other sites More sharing options...
AtlanticWx Posted January 19 Share Posted January 19 this is epic lmao Link to comment Share on other sites More sharing options...
Eskimo Joe Posted January 19 Share Posted January 19 Yea there's definitely a pivot starting. 1 Link to comment Share on other sites More sharing options...
Terpeast Posted January 19 Share Posted January 19 Smaller flakes now, but coming down at a decent clip 1 Link to comment Share on other sites More sharing options...
AtlanticWx Posted January 19 Share Posted January 19 HRRR has a lot of moco pushing 6" including the 2-3" that's already fallen! personally i haven't gotten a 6"+ event since 2019 so this would be awesome 1 Link to comment Share on other sites More sharing options...
87storms Posted January 19 Share Posted January 19 Just went outside to investigate…better flake size than I expected since radar showed me being on the northern edge of the goods. I’d say about 1.5” so far…unofficially. 1 Link to comment Share on other sites More sharing options...
weatherCCB Posted January 19 Share Posted January 19 3” here 27 moderate snow Link to comment Share on other sites More sharing options...
snoworbust Posted January 19 Share Posted January 19 Snowglobe under this band in Clarksville 3 Link to comment Share on other sites More sharing options...
WxUSAF Posted January 19 Share Posted January 19 Bigger flakes and good dendrite production going on now. This is piling up efficiently. 1 Link to comment Share on other sites More sharing options...
BristowWx Posted January 19 Share Posted January 19 2 minutes ago, Terpeast said: Smaller flakes now, but coming down at a decent clip I thought I was done. Just west of HEF. But started up again quite nicely. I will dance the edge. But can’t complain. Over inch closer to 2. We shall see Link to comment Share on other sites More sharing options...
Bob Chill Posted January 19 Share Posted January 19 You can see the bands to the NW orienting in a sw-ne alignment. Those should build and pivot. 4 3 Link to comment Share on other sites More sharing options...
North Balti Zen Posted January 19 Share Posted January 19 Maybe 3/4 of an inch on ground for my spot in Monkton and coming down nicely. Link to comment Share on other sites More sharing options...
aldie 22 Posted January 19 Share Posted January 19 Snowstick decorative thingy sitting just under 7" so if close means almost 4" new so far. Nice fluff factor 2 Link to comment Share on other sites More sharing options...
WxUSAF Posted January 19 Share Posted January 19 7 minutes ago, AtlanticWx said: this is epic lmao HoCo-MoCo death band like the good ol' days 3 Link to comment Share on other sites More sharing options...
Eskimo Joe Posted January 19 Share Posted January 19 Just now, WxUSAF said: HoCo-MoCo death band like the good ol' days You can see the returns picking up in WV again. KW99 AWOS (Petersburg0 just had it's visibility go under5 SM again so there's definitely stuff coming our way again. 1 Link to comment Share on other sites More sharing options...
Bob Chill Posted January 19 Share Posted January 19 No model had me anywhere near 3" b4 7am. This is sick 7 Link to comment Share on other sites More sharing options...
AtlanticWx Posted January 19 Share Posted January 19 1 minute ago, WxUSAF said: HoCo-MoCo death band like the good ol' days it's awesome here! 3.6" of snow and 0.55" of new snow in the past 30 min) 1 Link to comment Share on other sites More sharing options...
AtlanticWx Posted January 19 Share Posted January 19 Just now, Bob Chill said: No model had me anywhere near 3" b4 7am. This is sick i think this is also bc it came in faster but modeled, but yeah this WAA thump was sm heftier than predicted lmao. never was predicted to come close to 1.25" per hour rates 1 Link to comment Share on other sites More sharing options...
Terpeast Posted January 19 Share Posted January 19 8 Link to comment Share on other sites More sharing options...
Lucketts Posted January 19 Share Posted January 19 29 degrees in McLean with moderate snow. Just drove from Leesburg to McLean on Rt.7. Pretty sketchy with snow covered roads all the way. Don’t recommend it if you don’t have to. 1 Link to comment Share on other sites More sharing options...
Ravens94 Posted January 19 Share Posted January 19 Just changed to snow on 404 at Georgetown 2 4 Link to comment Share on other sites More sharing options...
CAPE Posted January 19 Share Posted January 19 I thought I would be ahead of it on the drive in. Came in hot and heavy. Despite all the salt, roads caved immediately and visibility was low. Snow became notably lighter towards Easton. 3 Link to comment Share on other sites More sharing options...
Terpeast Posted January 19 Share Posted January 19 Just now, Ravens94 said: Just changed to snow on 404 at Georgetown Roads haven’t caved in Georgetown yet 2 1 Link to comment Share on other sites More sharing options...
TSSN+ Posted January 19 Share Posted January 19 Typical light returns over Westminster. Hope can get some heavy stuff at some point. About 3/4” only so far. Link to comment Share on other sites More sharing options...
dailylurker Posted January 19 Share Posted January 19 Looks like about 3" on the ground here 7 miles west of Annopoils. The radar looks impressive my my area. 1 Link to comment Share on other sites More sharing options...
Eskimo Joe Posted January 19 Share Posted January 19 Really starting to pile up at the Clarksville mesonet site: https://weather.umd.edu/mdmesonet/ 1 Link to comment Share on other sites More sharing options...
Deck Pic Posted January 19 Share Posted January 19 30/29, -SN, 2" 2 Link to comment Share on other sites More sharing options...
Eskimo Joe Posted January 19 Share Posted January 19 2 minutes ago, TSSN+ said: Typical light returns over Westminster. Hope can get some heavy stuff at some point. About 3/4” only so far. There's back building starting. Look at the last 2 frames just south of Westminster. 2 Link to comment Share on other sites More sharing options...
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