University of Tulsa
Mountain Cedar Pollen Forecast


Date Issued: 25 January 2001

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

Regional weather: Thursday, January 25 - TX/OK/AR: Cloudy south and west; mostly sunny north and east. High pressure centered over MO shifting east as a cold front approaches from the southern Rockies. Some precipitation (already moving into the Panhandles this afternoon) will affect mostly the northern sections tonight and Friday. Late night clouds/fog/drizzle southern sections tonight. Cold front moving through the region on Friday will get hung up in southern TX, setting the stage for a wet weekend. Highs today mostly 40's and 50's, lows tonight ranging from 20's northwest to 50's south. Highs Friday ranging from the 40's to 60's.

Trajectory weather: Mostly sunny, high in the 40's today. Cloudy with a wintry mix developing this evening.... changing to light snow after midnight. Low in the 20's. Light snow likely on Friday, high in the 30's.

Trajectory confidence: High

OUTLOOK: *** Low / Moderate Threat *** Conditions are mixed for pollen release today. Afternoon highs will reach the mid-40's.... borderline favorable for a few hours. Humidities are quite favorable from late morning onward. Winds are moderate. Low to Moderate Risk of exposure for residents of southwest and west-central MO this afternoon. Low Risk of exposure afterwards, as precipitation should wash out any airborne pollen. 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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