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Everything posted by MikeB_01
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Pittsburgh/Western PA Banter & Complaint Thread
MikeB_01 replied to blackngoldrules's topic in Upstate New York/Pennsylvania
10 year anniversary of a major screw job... https://projects.ncsu.edu/atmos_collaboration/nwsfo/storage/cases/20091218/ -
Pittsburgh/Western PA Banter & Complaint Thread
MikeB_01 replied to blackngoldrules's topic in Upstate New York/Pennsylvania
LOL -
In case you want to do a little early analysis on how the storm is looking right now and what it will do, the 15z RAP is initializing really well. The thermal gradients are nearly perfect. The only thing that I am seeing different is the convergence area off the east coast. The current analysis is more norther/zonal and the model initialized has a more southern look to it. Eventually, the model brings that rain/snow/mix line right through AGC. Granted, these are fluid systems, but to me it looks like the system may track even a touch further north due to the area of convergence. Will be interesting to see how that changes over the course of the day.
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keep in mind this is the 00z hires nam that is indicating a quick transition to some moderate snow that will amount in a few inches. I cannot for the life of me, figure out how this sounding profile yields snow. Any ideas? Am I looking at this wrong? It looks to me like it is still above freezing at 10,000 ft and no colder closer to the ground. No way this is snow - right?
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This looks like a fairly similar set up to the one that we just had. A convergence of two pieces of energy that forms a low pressure center somewhere around southern Ohio/Pennsylvania. The one thing that leaves me pessimistic is mentioned in the discussion. "amount of moisture remaining in the post- frontal environment remain inconsistent." Its just really rare to have a front to come through and keep it moist enough to continue to precipitate once the temp drops enough to allow it to snow. I thought we would see some snow thursday afternoon and then it just dried out so fast once the front went through. I want to keep watching to see if the trough can dig a little deeper rather and form the low a little further south. We might have enough cold air in place that way to get an inch or two out of the system
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Honestly, i don't listen to him and don't trust him. His "no hype" model is great if you never want to be wrong, but it also doesn't tell people what they need to know about the upcoming weather. We could be looking at a 4-8" storm within 36 hours and he would still be calling it "snow shower" on his whiteboard weather. Its ok to give a little hype when it is in the rhelm of possibiliites. I will be curious to see how the Euro performs modeling this system for early next week. I typically view the Euro as pretty reliable 3-5 days out, but it struggled this the changeover from this past storm - it never really happened...
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Welcome back everyone! Excited for another year of tracking - hopefully this year we manage to avoid the screwzone at least once and can cash in on a few nice storms. Anyway its nice to be tracking in early November. That being said, the Euro backed off a little bit on the 12z run. Hard to analyze what happened based on the surface maps from Pivotal. Would love to see what is happening at the H5 level. Anyway, should still see some accumulating snowfall. Which makes me happy Happy Tracking!
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Pittsburgh PA Area Spring and Summer 2019
MikeB_01 replied to CranberryWX's topic in Upstate New York/Pennsylvania
Mesoscale Precipitation Discussion 0753 NWS Weather Prediction Center College Park MD 315 PM EDT Tue Aug 13 2019 Areas affected...portions of the upper OH Valley into southwestern PA/western MD Panhandle Concerning...Heavy rainfall...Flash flooding possible Valid 131914Z - 140015Z Summary...Brief training of showers and thunderstorms could lead to flash flooding across portions of the upper OH Valley into southwestern PA/western MD Panhandle through 00Z. Rainfall rates of 1-2 in/hr will allow for localized 2-3 inch totals across the region. Discussion...Regional radar imagery through 1845Z showed a small cluster of thunderstorms expanding across eastern OH into far western PA. The convection was located to the south of an 850 mb low, analyzed over central Lake Erie via regional VAD wind plots with 20-30 kt of westerly flow from KILN to KPBZ. Breaks in cloud cover over the upper OH Valley has allowed MLCAPE to increase into the 500-1000 J/kg range, via 18Z SPC mesoanalysis estimates, over east-central OH, while values fall off to less than 500 J/kg in western PA to the north of a warm front. Further increases in MLCAPE are anticipated through the remainder of the afternoon, especially over southeastern OH into northern WV where reduced cloud cover will allow surface temperatures to climb another few degrees. With precipitable water values of 1.7 to 2.0 inches and the expected instability, rainfall rates of 1-2 in/hr seem likely. Winds, generally from the west in the LFC-EL layer, are forecast to average 20-30 kt according to recent runs of the RAP through 00Z. Given 850 mb winds of similar magnitude and direction, periods of training convection will be possible later this afternoon into the early evening hours. An eventual clustering and propagation of storms toward the south is expected as thunderstorm coverage increases. Therefore, flash flooding appears to be a threat with 2-3 inch rainfall totals and rates of 1-2 in/hr. These values are near or in excess of local Flash Flood Guidance values. Otto -
Pittsburgh/Western PA Banter & Complaint Thread
MikeB_01 replied to blackngoldrules's topic in Upstate New York/Pennsylvania
Atmosphere is looking loaded for tomorrow afternoon. Even though the sounding is saying "Tor" I am not sure i buy that. Not enough directional shear for it imo. Damaging straight line winds look more likely -
Pittsburgh/Western PA Banter & Complaint Thread
MikeB_01 replied to blackngoldrules's topic in Upstate New York/Pennsylvania
Noticed they uped it to Enhanced at the for the latest outlook. Saturday is looking juiced up and ready to go as well.