Mountain Cedar location(s): Edwards Plateau, Texas.
Regional weather: Saturday and Sunday,
December 20 and 21 – TX/OK: Across the region today skies will begin partly
cloudy to mostly cloudy with morning fog.
Temperatures will return to the 50’s region wide. Across the Edwards Plateau, winds will be
from the south and southeast, but shifting to the northeast in the surrounding communities. Winds will be light regionally. Into the evening temperatures will fall into
the 40’s, upper 30’ to the north in southern Oklahoma, with light winds
continuing from the south. Skies will build from partly cloudy to mostly cloudy
overnight. Temperatures will be seasonally
mild with reading across the region in the 40’s. Tomorrow mostly cloudy skies will begin to
break-up with the I-35 corridor becoming mostly sunny. Temperatures will climb into the upper 50’s
with San Antonio expected to reach into the low 60’s. Winds will be from the southwest over the
Edwards Plateau and from the south across the remainder of the region. In
areas, such as the western side of the Plateau winds will build up to 10 to 15
miles per hour. Tomorrow night, cloudy
skies will continue to dissipate, with the Edwards Plateau becoming mostly
clear. The edge communities to the north
will remain partly cloudy. Temperatures
will be in the low 40s wand a dominant southerly flow will occur across the region
for the entirety of the forecast area.
Trajectory weather: Air mass trajectories over Texas will evolve with conditions
stabilizing after the moister conditions earlier in the week. Skies will be cloudy but clearing towards
tomorrow, and temperatures will be mild with highs expected in the mid to upper
50’s today and a few degrees warmer tomorrow.
Air mass trajectories will initially move to the south then east with an
overall clockwise movement to the west and then northward across west
Texas. The weekend is expected to be
very mild across the entire forecast area and very good for the release and
entrainment of pollen. Temperatures will
be moderate with areas in the 50s, however San Antonio may reach 60 today and
tomorrow much of the western Edwards Plateau will achieve similar warmth.
OUTLOOK: *** High Threat today and High Threat Tomorrow
*** good conditions for pollen release today, with warm temperatures and light
winds. Yesterday’s pollen levels were
building from the showers on Thursday.
Yesterday had improving conditions that will be good for pollen
dispersal, entrainment and travel. The
trees are already pollinating and areas of heavy pollen concentrations have
been recorded, especially along the I-35 corridor from San Antonio north to
Waco. Tomorrow conditions will continue
to improve with temperatures in the upper 50s to low 60s and with clearing
skies. As the trees dry out pollen
conditions for release will improve, especially in the warmer southern
areas. For that reason we are expecting a
high threat of pollen in the atmosphere today and tomorrow.
Start (s) (shown by black stars on map): Austin, 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@example.com