Weather Page
Daily Weather Summary
July 4, 1999:
Happy 4th of July! High pressure ridge in control from surface up
to 500 mb. Air mass is drier aloft, but moisture still remains
near surface. Therefore, expect scattered Cu clouds this afternoon,
with isolated thunderstorms, like yesterday. High: 93 Low: 72
Mixing Hgt.: 2100 m MSL. 850 mb winds are out of the WSW or SW
off the profilers, and that trend should continue, as we are
very near the ridge axis. So, wind direction will vary from
WSW to S, and the speeds will be light, generally < 7 kts.
Tomorrow's Forecast
July 5, 1999:
Very little change expected. With surface ridge/subsidence, there
may be a little less Cu tomorrow than today. High: 95 Low: 73.
Day after Tomorrow Forecast
July 6, 1999:
No big change from Monday. Looking at AVN model, moisture may
increase a little as we go into the week, so thunderstorm chances
hang in there. High: 93 Low: 73.
Outlook
Basically, southerly flow continues. Surface and 500 mb
ridge seem to weaken a little, so afternoon/evening thunder-
storm chances continue through the week. Highs: 90-95.
Lows: 70-75. Tropical system apparent on satellite pictures
off Bahamas is moving WNW. Some of this moisture could
impact us as we go into the week, but timing and certainty
very low, so we'll just keep watching.
University of Alabama in Huntsville |
UAH |
Earth System Science Center |
Profiler Plume Depiction
The following shows a depiction of plume locations as predicted by the
profiler winds assimilated into a one-dimensional boundary layer model.
The top image shows particle positions as of the previous evening. The lower image shows particle positions as of the following morning for particles released beginning the previous noon.
Forecast Plumes
The following gives a depiction of plume locations using a Lagranagian
Particle Model coupled to the Regional Spectral Model. The RSM is run daily
in a forecast mode at TVA Muscle Shoals, Alabama.
These mpeg files are optimized for Quicktime
ARL Hysplit Trajectories
Nashville Soundings
University of Alabama in Huntsville |
UAH |
Earth System Science Center |
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