University of Tulsa
Mountain Cedar Pollen Forecast


Date Issued: 22 January 2001

Mountain Cedar location(s): Ozark Mountains, AR/MO

Regional weather: Monday, January 22 - TX/OK/AR: High pressure situated over the region today. Sunny skies and light winds with highs in the 50's most areas. Increasing clouds from the west later today and tonight ahead of a weak disturbance. Lows tonight from the 20's north to 40's south.

Trajectory weather: Mostly sunny, high in the upper 40's today. Becoming mostly cloudy tonight, low in the upper 20's. Partly cloudy Tuesday, high in the 40's.

Trajectory confidence: High

OUTLOOK: *** Low Threat *** Conditions are unfavorable for pollen release today. Temperatures at the source have just reached the bottom end of the tolerance range at 1pm (45 degrees F). They are expected to only go into the upper 40's for the maximum. Humidities have dropped slowly during the midday hours and are borderline (near 50%) at 1pm. Marginal favorability at best during the afternoon. Winds are light. In general, too many unfavorable or marginal factors to support much release. Low Risk of exposure to the public from today's activity. TK

 Trajectory Start(s) (shown by black star on map): Oak Grove, AR

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.

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