University of Tulsa
Mountain Cedar Pollen Forecast

Metropolitan Area	Exposure Risk
Dallas / Ft. Worth	Low
Austin	Low
San Antonio	Low

Date Issued: 19 December 2000

Mountain Cedar location(s): Edwards Plateau, Texas

Regional weather: Tuesday, December 19 - TX/OK/AR: Dissipating cold front lies across the northern and eastern sections. High pressure in control of today's weather. Mostly sunny region-wide except for northeast OK. Cold in AR and OK, cool in TX with no precipitation expected. Winds are light today, but will pick up in earnest on Wednesday as another system approaches from the west. Highs mostly from the 30's to low 60's, lows tonight in the 10's north to 40's south.

Trajectory weather: Austin: Mostly clear today and tonight. High near 60 today, low in the upper 10's tonight. Becoming cloudy with a chance of snow Wednesday, high near 30. Junction / San Angelo: Sunny today, high near 60. Clear tonight, low in the 20's. Increasing clouds on Wednesday, high near 50.

Trajectory confidence: High.

OUTLOOK: *** Low Threat *** We are early in the release season, though a few cones may be ready for release. Mixed conditions for pollen release today. Temperatures will be in the tolerance range during most of the afternoon, upper 40's and 50's. Humidities have already dropped into the favorable range during the late morning. On the other hand, winds are very light today and the majority of cones are not yet ready to release. On the whole.... little release expected with Low Risk of exposure. Residents of central and north-central TX are most likely to feel any ill effects. TK

Trajectory Start(s) (shown by * on map): Austin, TX; Junction, TX; San Angelo, TX

Austin, TX

Junction, TX

San Angelo, TX

Prepared by: Thomas Keever (Department of Marine, Earth and Atmospheric Sciences, NCSU), Estelle Levetin (Faculty of Biological Science, The University of Tulsa, 600 S. College, Tulsa, OK 74104), and C.E. Main (Department of Plant Pathology, North Carolina State University, Raleigh, NC 27695-7618). 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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