zenmsav6810

I saw a stratus undulatus yesterday on rt 29. I tried to get a picture haven't checked how it came out.

yeah. Our only chance at this point is a big ' fluke 57 style bomb blizzard. The nickel and dimes are over.

Freezing rain started in Green Lane. I think the Euro was right.

DT says don't pay attention to "accublunder".... haha fightin' words there

snow started at 7:50pm in Pottstown probably up to 0.7" now. Curiously the temperature has dropped from 34 to 31 to 29f. Got home from the ski shop in exton at 9:30pm, roads weren't bad.

Probably. If this is being marketed as a CAD event then it stands to reason that areas with lower and/or less hills won't score as well and the mid atmosphere will have thicker layer of warmer air.

The line is already drawn for them too: rt. 30 ... I share your sentiments

Magnolia is starting to push out... mother nature is cruel.

aren't all sun angles atomic sun angles?

A little disappointing up here but I'm glad this was more of a score to the south.

Light Flurries here in Green Lane, clouds are filled in

Interesting ideas here. Hopefully no snownados break out! So lovely out right now. Can't wait to see the cloud bank coming in. BCMR picked up about 5" last night near the summit made for nice skiing. It was over by 8:00 pm. Flakes were pretty big, nice dendrites. Storm was followed by intense fog for about an hour. 3" in Pottstown. Rt 100, 663 and 29 were a mess during the rush hour. I had to take Salem Bible Church Rd to get to the mountain.

My champion viburnum is starting to push out to. I was like what gives, it hasn't been that warm, my guess is soil temperatures are high from all of this rain. I hope none of my plants get damaged.

yes, interesting ground weather lately

Tons of Black ice this morning. creeks are high.

Recorded a max rain rate of 2.30"per hr at 11:52 am here

They invaded mine about 3 weeks ago

His false positive rate is certified weenie.

Phillywx keeps is more optimistic than we are about an upcoming miller A. Who knows. Definitely not rock solid.

Sorry, I've been away. I'm writing this storm off as interesting and good experience from an understanding point of view. Last night was pretty foggy coming home from Bear Creek (BCMR) indicative of our CAD which I think was a factor with our front end thump (our "mountains" just aren't tall enough. A slight wind blew on the hill indicating the approaching front at about 2:45 pm, lasting about 5minutes at 7-9 mph. I left Macungie at 8pm we had 2" and it was still snowing (30F). When I got to Boyertown at 8:35pm it was sleet (31F), Douglassville was freezing rain at 8:55pm (only 1" of sleet/snow had fallen) (31F), South Pottstown at 9:10 pm was straight rain only .5" had fallen (32F). I spent nearly the whole day outside teaching so I really got a feel for how this style events busts. CAD's are curious to witness on the ground.

get him screws instead... at least you can kinda go backwards then.

Here's the formula for CAD detection, . From Wikipedia: "This algorithm is used to identify the specific type of CAD events based on the surface pressure ridge, its associated cold dome, and ageostrophic northeasterly flow which flows at a significant angle to the isobaric pattern. These values are calculated using hourly data from surface weather observations. The Laplacian of sea level pressure or potential temperature in the mountain-normal—perpendicular to the mountain chain—direction provides a quantitative measure of the intensity of a pressure ridge or associated cold dome. The detection algorithm is based upon Laplacians () evaluated for three mountain-normal lines constructed from surface observations in and around the area affected by the cold air damming—the damming region. The "x" denotes either sea level pressure or potential temperature (θ) and the subscripts 1–3 denote stations running from west to east along the line, while the "d" represents the distance between two stations. Negative Laplacian values are typically associated with pressure maxima at the center station, while positive Laplacian values usually correspond to colder temperatures in the center of the section.[13] Map of the labeled weather stations in the Southeastern US that are suitable for use in the CAD detection algorithm" I'm sure there is a model out there somewhere to look at just this

T-storms were fun until one of them bit me on the toe. May 22nd, 2015...

Burbs had one after 2016 blizzard

clinging to the NAM... I thought only amateurs did that. NAM 3k is solid cold through surface-mids-uppers down through virgnia. What does the Euro say?