|
. |
November 11, 1996 19Z
surface data analysis
By Monday evening Nov 11 daytime temperatures have warmed nicely, as might
be expected this early in the season. In fact, temperatures are above
freezing throughout much of the eastern lakes. The thermal troughs in the
western lakes persist, but are weaker because the contrast between the
cold air flow and lake temperature is less - as a result of the daytime
warming over the land.
|
The lake effect snowfall is still widespread, but
spotter reports indicate that the snowfall is more intermittent and not as
heavy. Perhaps, the weakening of the thermal trough is partially responsible
for the daily cycle of lake effect intensity seen in this storm. At the
trough axis where winds change direction quickly, good convergence of air
is likely - which helps support the development of lake squalls and
snowbands. |
[Image: P,T, Wx 11/11/96 19z (31K)]
|
The flow field near the surface continues to show the persistent
troughs downwind of the lakes, and a continuation of the multiple lake
interactions. In particular, flow from Lake Superior to Lake Huron - to
Lake Ontario is beginning to set up and squalls are increasing at the
east end of Lake Ontario. |
Nov 11, 1996 13z
|
|
Nov 12, 1996 03z
|
|