Mountain Cedar location(s): Edwards Plateau, Texas.
Regional weather: Saturday,
January 24 and Sunday, January 25 – TX/OK: Across the region today conditions
will be clearing from the rain storm this week.
Overall the region will be sunny with warming conditions. Across the western Edwards Plateau skies will
be mostly sunny with a few clouds building towards the evening. Temperatures will climb to the upper 50s and
winds will be light from the west. In
the edge communities north to the Dallas/Ft. Worth metro region skies will be
sunny and temperatures will reach for the low 60 degree mark. The overall westerly to northwesterly flow
will extend into Oklahoma with high temperatures in the upper 50s. Overnight
the north will remain clear and temperatures will drop to the mid- to upper
30s. To the south across Texas, partly
cloudy skies will occur with temperatures in the mid- to low 30s. Winds will be very light primarily from the
west to northwest. Sunday will continue
the mild conditions with mostly sunny skies across the region. Temperatures will build into the mid- to
upper 60s with the southernmost edge communities approaching the 70 degree
mark. Winds will remain from the
northwest at light conditions. Tomorrow
night, mostly clear skies will occur with temperatures in the upper 30s to the
north and across the western Edwards Plateau.
The edge communities from San Antonio to Austin and north towards Dallas
will only drop into the 40 degree range. Winds will be light, once again, from
the northwest.
Trajectory weather: Air
mass trajectories over Texas will be dominated by a west to northwesterly flow
across the region. Winds will be light
from 5 to 10 miles per hour and the trajectories move towards the east. Weather conditions today will be nice with
sunny skies and temperatures in the 50s today climbing into the 60s tomorrow. Tonight temperatures will drop into the
thirties with only the far western Edwards Plateau flirting with conditions
near the freezing point. Tomorrow the
western Plateau will be partly cloudy but the rest of the region will mimic
today’s conditions. Tomorrow conditions
will see sunny to mostly sunny skies with temperatures in the 60s, approaching
the low 70s to the south around the San Antonio metro region. Winds will remain, coming from the west at
light levels. Tomorrow night mostly
clear skies will extend across the area with lows in the lower 40s to the south
and the mid- 30s on the western Edwards Plateau. Winds will remain from the northwest at light
levels
OUTLOOK: ***HighThreat
today and High threat Tomorrow.
Today conditions will be very good for pollen dispersal. Entrainment and downwind travel will occur
but the winds will be light and the air remains dense so it will be moving near
the ground surface. High temperatures
will climb in to the 50s today and then the 60s tomorrow. Winds at the surface will
be from the north and northwest at light levels. The atmosphere is heavy and thus the
trajectories will travel at ground surface where anything entrained within the
atmosphere will be open for impaction on surfaces and removal from the air
stream. Tomorrow the warming will
continue and thus the atmosphere should be getting mor buoyant. As conditions improve pollen cones are
expected to open bringing higher and eventually significant concentrations back
into the atmosphere over Texas.
Trajectory
Start (s) (shown by black stars on map): Austin, TX
Junction, TX
Sonora, TX
Matrix of sites across the Edwards Plateau (100 meters; 12:00 pm cst)
Prepared by: Estelle Levetin(Faculty of Biological Science, The University of Tulsa, 800 S. Tucker Dr., Tulsa, OK 74104) and Peter K Van de Water (Department of Earth and Environmental Science, California State University Fresno, 2576 East San Ramon Avenue, M/S ST24, Fresno CA 93740-8039). 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: [email protected]