The
Mountain
Cedar Pollen Forecast
Date Issued:
Mountain Cedar Location(s):
Regional Weather: Saturday, December 21 and Sunday, December 22 TX/OK/AR: Conditions across the southern regions will be under the influence of high pressure in the Gulf of Mexico with overall quiet conditions. To the north a deepening low pressure will move across Oklahoma and into Arkansas over the weekend. In Texas, mild conditions will continue both days as temperatures will reach the mid to upper 60s on Saturday cooling by 10 degrees on Sunday. The High pressure in the Gulf will funnel some moisture across the region today but skies will be mostly sunny to sunny. Tomorrow partly cloudy conditions will prevail as the amount of moisture increases. Winds will be moderate throughout the day but reaching strong, especially in northern Texas, this afternoon with wind advisories posted by the National Weather Service. Humidity will remain low with zero percent chance of rain over the weekend. Temperatures overnight will be seasonal in the upper 30s and low to mid 40s depending upon your location. To the north a building low pressure system will move across the area today bringing strong winds and partly cloudy conditions today and tomorrow. There is little moisture with this weather system therefore the chance of precipitation is low. Temperatures will reach the mid 50s today cooling by another 5 degrees tomorrow with lows at or below freezing across the region. Humidity will remain low today and tomorrow with winds showing moderate strength, strong to the south this afternoon, calming overnight and into tomorrow. Significant weather will move through the region on Monday.
Trajectory weather: The air mass trajectories from
the
OUTLOOK: Saturday***Moderate Threat today*** mixed conditions for pollen release Sunday: *** Low Threat today*** unfavorable conditions for pollen release. Cold temperatures and cloudy conditions result in mixed conditions for pollen release today. Trees to the south have begun to pollinate thus signaling the beginning of the pollination season. A moderate threat for entrainment and travel exists today because of the trajectory characteristics, buoyant atmospheric conditions. Tomorrow atmospheric conditions are such that released pollen should travel near ground level resulting in travel not far from the source. For these reasons a moderate threat today and low threat tomorrow to downwind populations exists.
Trajectory Start (s)
(shown by black star
on map):
Prepared by: Peter
K. Van de Water (Department of Geosciences,
Questions: Aerobiology Lab e-mail: pollen@utulsa.edu
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