The University of Tulsa

Mountain Cedar Pollen Forecast

Thursday / Friday

 

Date Issued: 24 December 2009

Mountain Cedar Location(s): Arbuckle Mountains, OK

Regional Weather: Thursday, December 24 – TX/OK: Across the region the weather will start to improve from yesterday and last night’s rain and snow. Cold conditions will continue across the region today, however skies will be clearing and temperatures beginning to climb back to seasonal normals towards the south. The cold front that moved through yesterday and last night brought chili temperatures as Oklahoma will not get out of the 30s today. Skies will remain partly cloudy with a chance of snow showers. Winds will be from the northwest and very strong at 20 to 30 miles per hour and gust reaching into the 40 miles per hour range. Similar conditions will exist across northern Texas with snow and freezing rain towards the west in the panhandle region. Temperatures will be 5 degrees warmer, topping out in the low 40s. On the Edwards Plateau skies will be mostly cloudy with temperatures in the 40s today. The edge communities will see sunny skies and temperatures in the 50s in most localities. Across the region winds will be very strong, 20 to 30 miles per hour, from the northwest. Overnight, cloudy skies will be maintained to the north in Oklahoma to the Dallas/Fort Worth area. Southward skies will clear. Across the region expect low temperatures to dip well into the 20s, except for the southern most locations which will be in the low 30s. On Christmas Day, skies will remain partly cloudy north but mostly sunny across the rest of the area. The northern areas will remain in the 30s with winds from the west moderating in strength. To the south temperatures will be in the 40s across the Edwards Plateau and 10 degrees warmer heading toward the mid 50s along the eastern and southern edge of the Plateau. Christmas night will see chili conditions settle in once again with moderate winds mostly from the north.

Trajectory weather: partly cloudy skies will occur across Oklahoma today and tomorrow. Temperatures will be in the mid to lower 30s across Oklahoma today and tomorrow. Precipitation of rain and snow is forecast for the region today and tonight with very strong winds out of the northwest. Tonight temperatures will drop into the teens and lower 20s with an ongoing chance of precipitation. Friday, the precipitation should quit but cold air and strong winds will remain. High temperatures on Friday will only reach into the mid to upper 30s. Friday night temperatures will dip once again into the teens and lower 20s. The atmosphere will be heavy and moist both today and tonight, although the winds will be caught up in the Low Pressure system moving across the area and show some buoyancy. Tomorrow, the trajectories move southeast then quickly move to a northeast direction. Heavy atmospheric conditions will move the trajectories along the ground.

OUTLOOK: *** Low Threat today; Low threat tomorrow *** Poor conditions for pollen release today and Poor conditions tomorrow; Poor conditions for entrainment and transport today,Poor conditions tomorrow. A low threat exists today with cloudy skies, precipitation and strong wind speeds. Temperatures will be cold today barely getting into the mid to upper 30s. Overnight temperatures will drop into the teens and lower 20s across the region. Winds will remain strong from the northwest. Poor conditions exist for any pollen dispersal today, tomorrow the chance of precipitation declines but temperatures remain cold, in the thirties, with strong winds. Poor conditions exist for any release, entrainment and transport from the Oklahoma Juniperus ashei population today and tonight. There will be no new forecast tomorrow, Christmas day, but a new forecast will be posted Saturday for Saturday and Sunday.

Trajectory Start (s) (shown by black star on map): Davis, OK.

THURSDAY

FRIDAY

Prepared by: Estelle Levetin (Faculty of Biological Science, The University of Tulsa, 800 S. Tucker Dr., Tulsa, OK 74104) and Peter K Van de Water (Department of Earth and Environmental Science, California State University Fresno, 2576 East San Ramon Avenue, M/S ST24, Fresno CA 93740-8039). 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

 

Return to Forecasting Home Page