The University of Tulsa

Mountain Cedar Pollen Forecast

 

 

Date Issued: 24 January 2003

 

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

 

Regional Weather: Friday, January 24 TX/OK/AR:  Conditions across the forecast region will be once again influenced by the current push of arctic air coming from the north.  Clouds have been building over western Texas and will result in partly cloudy to mostly cloudy conditions across the region today with cold temperatures as far south as San Antonio, Texas.  Todays highs will be in the low 30s around Dallas to the mid 40s on the southern edge of the Edwards Plateau.  Winds will be from the south to southeast and light and moderate resulting in colder wind chill conditions. Overnight temperatures will moderate from last nights conditions to just around freezing in the north and the upper 30s to the south.  A warm up will begin for Saturday, with temperatures reaching the low 50s and even warmer weather expected on Sunday.  To the north in Oklahoma high temperatures today will just get above freezing with partly to mostly cloudy conditions and moderate winds from the south.  Temperatures overnight will dip into the upper 20s then warm to the upper 30s and low 40s on Saturday.

 

There are no air mass trajectories today because of a computer problem.  However, temperatures across the region will remain cold for pollen release with highs expected only in the upper 20s today.  Winds will be light from the south.  Skies will be partly cloudy to mostly cloudy across the area but humidity will be in the low to moderate range.  Overnight temperatures will be in the lower twenties.  Warmer conditions will occur on Saturday with high temperatures near 40 but humidity will be increasing and cloudy conditions are expected.  Moderate winds will blow from the south.

 

OUTLOOK: *** Low Threat Today*** Unfavorable Conditions for Pollen Release.  Cloudy skies, moderate humidity levels and very cold temperatures with the highs remaining well below freezing result in unfavorable conditions for pollen release today. There are no trajectories because of a computer problem but conditions at the source site are poor for release.  In addition, the trees should be nearing the end of their pollination season so the amount of pollen left to be dispersed is trailing off.  The poor weather conditions at the source site lead to a low threat for downwind entrainment and travel of pollen. Similar conditions are expected tomorrow.

 

  Trajectories were unavailable this morning from the NOAA web site.

 

 Prepared by: Peter K. Van de Water (Department of Geosciences, Oregon State University), and Estelle Levetin (Faculty of Biological Science, The University of Tulsa, 600 S. College, Tulsa, OK 74104). 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

 

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