University of Tulsa
Mountain Cedar Pollen Forecast

Date Issued: 22 December 2000

Mountain Cedar location(s): Arbuckle Mountains, OK

Regional weather: Friday, December 22 - TX/OK/AR: High pressure centered over MO/AR this morning will heavily influence the weather today and Saturday. As the High moves east, winds circulating clockwise around the High will bring moisture in from the Gulf of Mexico today and tonight. Winds will increase as well. Fair nearly all areas today except for deep South Texas, where cloudy skies indicate the development of a low pressure center just off the coast. Winds around the High.... and development of the Low.... will serve to increase cloudiness in southern and eastern sections as time passes. Some drizzle possible tonight in the hill country. By Saturday, there will be a chance of light rain or showers in southern and eastern TX. Highs ranging from the 30's north and east to 50's south and west; lows tonight mostly in the 20's to 40's.

Trajectory weather: Sunny to partly cloudy today, high in the 40's. Becoming mostly cloudy this evening with a chance of freezing drizzle.... then snow....with snow likely late. Low around 5. Mostly cloudy with a chance of light snow Saturday, high around 10.

Trajectory confidence: High

OUTLOOK: *** Low Threat *** Early in the season, though a few cones may be ready to release pollen. Conditions are unfavorable for release today. Temperatures will not reach the tolerance range this afternoon, though they may come close. Humidities are favorable, however. Moderate to strong wind today. Little release expected today, with Low Risk of exposure. Residents of central OK, including Oklahoma City, are the most likely to feel any ill effects. TK

 Trajectory Start(s) (shown by black star on map): Sulfur, Oklahoma

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.