About 35 to 45 minutes ago, a couple rumbles of thunder came through my location here in Punxsy. At the time, we were getting around 1.5 to 2 inches of snow an hour. Within the last 10 minutes, the snow has tapered off considerable. So far, we have received around 7.5 inches of snow. We could get another 3 to maybe 4 inches this afternoon. This is so far, our greatest snowfall for the year. I am really hoping that later this week, the system does not come or if it does, doesn't dump this much on us as we are just about out of places to throw snow. More later as the afternoon moves on.
Tom
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tomboudreau
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ThunderSnow!!
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CaptinCrunch
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tomboudreau
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2 Seam Fastball
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Tom, Univ. of Missouri is doing research on convective snows. If you want, you can report your thundersnow event with this link: http://weather.missouri.edu/ROCS/particip.html
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Chris the Weather Man
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FLguy
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thundersnow is normally the result of convective instability, or conditional Symmetric instability.
model soundings (particularly the ETA) prior to the event which occured today across much of PA showed strong convective instability and CSI signals such as dry adiabatic lapse rates (~6.00-7.00 C/km), high total totals indices (45-50), and elevated CAPE evident on BUFKIT soundings.
the area of best UVM induced by strong PVA ahead of the vorticity maximum was more than capible of releasing CSI, and resulting in banded/convective snowfall as saturation was acheived. (recall, CSI is a moist instability so it requires sufficient moisture and saturation in the symmetrically unstable layers in order to develop mature mesoscale precip bands).
model soundings (particularly the ETA) prior to the event which occured today across much of PA showed strong convective instability and CSI signals such as dry adiabatic lapse rates (~6.00-7.00 C/km), high total totals indices (45-50), and elevated CAPE evident on BUFKIT soundings.
the area of best UVM induced by strong PVA ahead of the vorticity maximum was more than capible of releasing CSI, and resulting in banded/convective snowfall as saturation was acheived. (recall, CSI is a moist instability so it requires sufficient moisture and saturation in the symmetrically unstable layers in order to develop mature mesoscale precip bands).
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ColdFront77
I found this aboutGravity Waves.
StormsFury has brought them up on a few times, including after one occurred in South Carolina, some months ago.
StormsFury has brought them up on a few times, including after one occurred in South Carolina, some months ago.
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