The University of Tulsa
Mountain Cedar Pollen Forecast
Metropolitan Area |
Exposure Risk |
Dallas/Fort Worth |
Low |
Austin |
Low to Moderate |
San Antonio |
Low to Moderate |
Date Issued: 13 December 2004
Mountain Cedar Location(s): Edwards Plateau, Texas
Regional Weather: Monday and Tuesday, Dec 13 and 14.
TX/OK: A strong cold front moved into the area on Sunday and will remain in place over the next few days.
Skies will be clear to partly cloudy with strong gusty wind from the north. Temperatures on Monday will be in the
40s in Oklahoma and the 50s in Texas. Night time lows will be near 20 in the north and near freezing in the south.
Winds will moderate on Tuesday, but temperatures will remain 20 degrees cooler than the mild temperatures of the
past weekend.
Trajectory weather: The air mass trajectories from Texas
move to the southwest towards Mexico. Each of the trajectories shows characteristics associated with the cold air
as the air masses sink towards the ground and move primarily at ground level. Conditions at the sources will
be cool today but dry with sunny clear skies. The trees have started to release pollen; therefore, some pollen
may be released but the cool temperatures should discourage significant release. In addition atmospheric conditions
are not particularly good for pollen entrainment and transport downwind. Tomorrow trajectories show the air masses
initially moving to the south but then turning to the north as the southerly winds return tomorrow afternoon.
OUTLOOK: *** Low to Moderate Threat today *** Marginal conditions for pollen release. Sunny skies with dry windy conditions
but cold temperatures coupled with moderate to strong winds across the region result in mixed
conditions for pollen release today. However, the cool blustery conditions should restrain significant release.
The trajectory characteristics do not show perfect atmospheric conditions leading to entrainment and travel downwind. Those
at greatest risk for pollen exposure include people in the south region of the plateau down to San Antonio.
Trajectory Start (s) (shown by *
on map): Austin, TX; Junction, TX; San Angelo, TX.
AUSTIN
JUNCTION
SAN ANGELO
Prepared by: Estelle
Levetin (Faculty of Biological
Science, The University
of Tulsa, 600 S. College, Tulsa, OK 74104). This forecast gives the anticipated future track of released
Mountain Cedar pollen, weather conditions over the region and along the forecast pathway, and an estimated time
of arrival for various metropolitan areas.
Questions: Aerobiology Lab e-mail: pollen@utulsa.edu
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