University of Tulsa
Mountain Cedar Pollen Forecast

Date Issued: 12 December 2000

Mountain Cedar location(s): Edwards Plateau, Texas

Regional weather: Tuesday, December 12 - TX/OK/AR: Arctic high pressure is now sprawled over the central U.S. Cold front is now south of TX. Clouds are prevalent and precipitation will overspread the region from west to east today and tonight. Snow, sleet, freezing rain, and rain are in store depending on your location. Precipitation will linger through Wednesday in the northern and eastern sections. Temperatures won't change much today and tonight, with highs/lows from the upper 10's far northwest to the 30's.... maybe a few 40's..... in southern TX.

Trajectory weather: Austin: Good to likely chance of freezing rain and sleet this afternoon and tonight. Temperatures in the upper 20's to near 30. Cloudy with freezing rain or rain Wednesday morning, then clearing during the afternoon. High in the 30's. Junction / San Angelo: Cloudy with a good chance of freezing rain or sleet by this afternoon, high in the 20's. Snow/sleet likely tonight with temps falling to near 20 or the upper 10's. Chance of sleet or snow Wednesday, mainly in the morning, high near 30.

Trajectory confidence: High.

OUTLOOK: *** Low Threat *** We are early in the release season with few cones ready to release. Very Low Risk of any release today. Conditions are highly unfavorable with temperatures in the 20's and 30's. Humidities are not in the tolerance range and will go up as the day progresses. 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.