Cobalt Posted February 18, 2018 Share Posted February 18, 2018 1 minute ago, Coach McGuirk said: They are always warmer than the general area. They probably measure close to the tarmac next to jets taking off. Yup. Knew it was bad, but never knew it was that bad. Link to comment Share on other sites More sharing options...
MN Transplant Posted February 18, 2018 Share Posted February 18, 2018 1.2” of snow on 0.49” of precip. That is not the ratio you want. Link to comment Share on other sites More sharing options...
Ka60 Posted February 18, 2018 Share Posted February 18, 2018 Shoveled the remaining snow before it is all gone by tomorrow! Link to comment Share on other sites More sharing options...
cae Posted February 18, 2018 Share Posted February 18, 2018 About 2 1/4" here, but most surfaces have 0.25" - 0.5" less because accumulations started later. There was a lot of compaction. In the last 2-3 hours of the storm, cleared areas gained about an inch, but areas with existing snow cover only gained about 1/2". I suspect if I'd been clearing and measuring repeatedly, the total would probably be closer to 3". Link to comment Share on other sites More sharing options...
Amped Posted February 18, 2018 Share Posted February 18, 2018 Ended up with close to 2" here. 1-3" forecast worked for the most part. Link to comment Share on other sites More sharing options...
Sparky Posted February 18, 2018 Share Posted February 18, 2018 2.25" is my total pure dendrites. Link to comment Share on other sites More sharing options...
Negnao Posted February 18, 2018 Share Posted February 18, 2018 18 minutes ago, Coach McGuirk said: They are always warmer than the general area. They probably measure close to the tarmac next to jets taking off. They didn't measure when the snow stopped(they are not required to do so although it's recommended). They measured hours after so melting and compaction lowered the total. Unfortunately the .2 is not the snowfall, it's what was left at the 7pm measurement. Other locations are much better at following NWS snowfall measurement recommendations. We should have people who care about science measure at the zoo as an additional official reporting location for DC. Link to comment Share on other sites More sharing options...
Coach McGuirk Posted February 18, 2018 Share Posted February 18, 2018 2 minutes ago, Negnao said: They didn't measure when the snow stopped(they are not required to do so although it's recommended). They measured hours after so melting and compaction lowered the total. Unfortunately the .2 is not the snowfall, it's what was left at the 7pm measurement. Other locations are much better at following NWS snowfall measurement recommendations. We should have people who care about science measure at the zoo as an additional official reporting location for DC. Pretty sure they care more about the planes than the snow. Link to comment Share on other sites More sharing options...
Negnao Posted February 18, 2018 Share Posted February 18, 2018 1 minute ago, Coach McGuirk said: Pretty sure they care more about the planes than the snow. Absurd, the two are not mutually exclusive. Link to comment Share on other sites More sharing options...
Coach McGuirk Posted February 18, 2018 Share Posted February 18, 2018 2 minutes ago, Negnao said: Absurd, the two are not mutually exclusive. They get hot exhaust constantly on the tarmac. It's always going to be an island of warmth. But yeah, DCA isn't even even in DC. It's in Alexandria. Link to comment Share on other sites More sharing options...
MillvilleWx Posted February 18, 2018 Share Posted February 18, 2018 1 hour ago, das said: Wow! All the best returns stayed south? Edited to add: Looks like it. Clarksburg may have been the sweet spot on this one: The Upper MoCo band lived today. Almost cracked 3", but I flipped to sleet for a time and ruined the chance. Still got about 2.6" as the total. I'll take that with this event. Snow caked on the trees bringing beauty to the night. Link to comment Share on other sites More sharing options...
Eskimo Joe Posted February 18, 2018 Share Posted February 18, 2018 If we didn't have those 5 hours of nuclear sun today I think a lot of folks would've gotten 3" - 5". Link to comment Share on other sites More sharing options...
Amped Posted February 18, 2018 Share Posted February 18, 2018 53 minutes ago, Warm Nose said: DCA will never be representative again until they move the obs location. It's basically irrelevant at this point. DCA needs to stay to stay where it is and keep the name for aviation purposes. We need to make another station at the National Mall kind of like central park in NYC. Link to comment Share on other sites More sharing options...
mattie g Posted February 18, 2018 Share Posted February 18, 2018 Looking forward to this slop melting tomorrow. Or tonight. Link to comment Share on other sites More sharing options...
Interstate Posted February 18, 2018 Share Posted February 18, 2018 Ended with 2.0 Link to comment Share on other sites More sharing options...
Jandurin Posted February 18, 2018 Share Posted February 18, 2018 The Upper MoCo band lived today. Almost cracked 3", but I flipped to sleet for a time and ruined the chance. Still got about 2.6" as the total. I'll take that with this event. Snow caked on the trees bringing beauty to the night. My holly trees are literally resting their branches on my car Link to comment Share on other sites More sharing options...
Cobalt Posted February 18, 2018 Share Posted February 18, 2018 RGEM, you win Link to comment Share on other sites More sharing options...
Dendrimer77 Posted February 18, 2018 Share Posted February 18, 2018 Only rain all day in Charlottesville. Glad all those who work hard to keep these boards quality got up in some sweet snow today. Still sitting at less than 4" down this way. Bring on the block Link to comment Share on other sites More sharing options...
NorthArlington101 Posted February 18, 2018 Share Posted February 18, 2018 RGEM, you win I get where he is coming from but the RGEM showed 1”+ of precip. Doubt we topped .5”. Link to comment Share on other sites More sharing options...
Eskimo Joe Posted February 18, 2018 Share Posted February 18, 2018 2 hours ago, das said: 3.1” for the total here in Clarksburg. All snow. Nice little quick-hitter between 70F days. I'm ready for spring. Hope we don't get any more snow or cold this ''winter'' unless we are gonna get a March '93 redux. I'd like to torch and get a string of like 3 days in the low 80s in March. 2 hours ago, high risk said: yeah, it's been my experience that the snow depth maps can run low, but in these tough call events, they tend to be way better than the 10:1 maps. In this case, the depth maps were underdone in central MD, but they sure told me that the 10:1 map idea of 6" in southern Howard and 3-5" for all of DC Metro and southern MD wouldn't be the way to go either. Even the Ferrier map was underdone, telling me that the NAM had the sleet line advancing north too quickly. That seems plausible, as the initial thump stayed snowy longer and got cranking early, allowing a larger part of the area to start tallying up snow. In events like this I used snow depth and Kuchera when forecasting my low and high range respectively. It's almost spot on every time. Link to comment Share on other sites More sharing options...
Bob Chill Posted February 18, 2018 Author Share Posted February 18, 2018 4 minutes ago, Eskimo Joe said: I'm ready for spring. Hope we don't get any more snow or cold this ''winter'' unless we are gonna get a March '93 redux. I'd like to torch and get a string of like 3 days in the low 80s in March. In events like this I used snow depth and Kuchera when forecasting my low and high range respectively. It's almost spot on every time. I was pleasantly surprised to out perform the euro's Kuchera plots. Only becuase temps ended a few degrees colder and it made all the difference. A good rule of thumb with 10:1 maps is to only consider them when it's below freezing well before onset and stays below for the entire event. Clean storms like that are more rare than ones like today. Link to comment Share on other sites More sharing options...
Maestrobjwa Posted February 18, 2018 Share Posted February 18, 2018 Meanwhile, the GFS.....lol A short-lived kingship! (Ya gotta wonder how it will handle things if we can get the delicious-looking pattern in the LR to verify) Link to comment Share on other sites More sharing options...
HighStakes Posted February 18, 2018 Share Posted February 18, 2018 Ended up with 2. Link to comment Share on other sites More sharing options...
cae Posted February 18, 2018 Share Posted February 18, 2018 Model comparison is up. I'll add verification data when it becomes available. https://www.americanwx.com/bb/topic/50849-post-event-model-discussion/?do=findComment&comment=4829155 Link to comment Share on other sites More sharing options...
NorthArlington101 Posted February 18, 2018 Share Posted February 18, 2018 Just got home to check my families measurements and I’m finding about 1” still but I know it’s been compacted. I’m guessing I ended up with a little more then one, I’ll see what others ended up with in the morning. Link to comment Share on other sites More sharing options...
Jebman Posted February 18, 2018 Share Posted February 18, 2018 Well I took a little trip to Jefferson County tonight. Yesterday I went to the casino and stayed all night, finally winning 240 dollars. However, I was very tired today and I managed to SLEEP RIGHT THROUGH ALL OF THE SNOW AND SLEET lmao. It turned out to be an afternoon delight and was over by 6pm lol. We got a half inch of sleet and snow in Dale City, on car tops and on grass. Streets and sidewalks were just wet. Well, I got on the Prince William Parkway then on Liberia then on Rt 28. Once I got past Dulles, I noticed slightly more snow on the fields I was passing. When I hit Rt 7, there was no doubt about it, there was more snow on the ground there by GWU and the Indoor Skydiving building. There also started to be snow on the roadsides as well. Once I went over the Skyway and got on the western part of Rt 7, you could see lots snow on trees. It was mostly wet snow here and likely very little sleet. Then I topped the hill and hit Rt 9. WOW what a winter wonderland! Wet snow had gotten onto everything! All i could say was wow wow wow wow wow wow wow wow! It was hard to believe all the snow ON SIDE ROADS! I topped that ridge where the state border is and they must have had three inches of fresh wet snow on the ground there! Just WOW! Then I descended into Charles Town, and it looked like probably an inch or so of snow on the ground. There was snow on trees there too. Western Virginia and West Virginia get some excellent weather compared to us in Dale City, lol. I love this place! Link to comment Share on other sites More sharing options...
Deck Pic Posted February 18, 2018 Share Posted February 18, 2018 DCA. lol. What a joke. I hope LWX quality checks that measurement. Link to comment Share on other sites More sharing options...
Cobalt Posted February 18, 2018 Share Posted February 18, 2018 8 minutes ago, Deck Pic said: DCA. lol. What a joke. I hope LWX quality checks that measurement. There is actually a 1" total 2 miles WNW of DCA. You can't make this stuff up Link to comment Share on other sites More sharing options...
WEATHER53 Posted February 18, 2018 Share Posted February 18, 2018 Jeb are you saying you got toasted at CT and sleep thru a 30-90 minute pounding? Link to comment Share on other sites More sharing options...
Mordecai Posted February 18, 2018 Share Posted February 18, 2018 1 hour ago, Jebman said: <snip> I decided to take your advice and drive to the favored areas. Didn't feel like going all the way to Jefferson Co. so going to Leesburg seemed like a decent compromise. I needed to do some shopping so I decided to go to the Leesburg outlet mall. It started in the form of small hail & ice pellets and eventually turned into snow. I was out and around there for a few hours and as time went on, the flakes got bigger and the rates got faster. At around 4:30, grass and trees were covered in white and the roads were starting to be whitened as well. The drive back on R7 was amazing. I passed by the Indoor Skydiving like you did. Visibility was pretty low and the background was covered in white. A glorious site to behold. I got back home at around 6 when it started to change to rain. Measured about 1.2" at my place and was surprised I got that much. I fell asleep after lol I could have taken more pictures if my phone didn't run out of battery on the drive back. bonus video: Link to comment Share on other sites More sharing options...
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