Strong high pressure is centered just to the east of Houston this morning. Despite the weak wind conditions, a land breeze did not develop early this morning. Ozone background levels are again very low by Houston standards. However, with the weak winds at the surface and aloft due to the approaching high pressure, and the clear skies (afternoon broken cumulus) that will result, high ozone values are likely today in the downtown area and surface stations to the north and northwest later this afternoon. Precipitation chances are zero. Winds will start off light and variable, then begin to pick up a little from the southeast early. Winds will veer with time as the high approaches, and they will also diminish. Late in the day, stronger winds from the southeast will develop behind the sea breeze. Therefore, the ozone plume will not be advected very far today. We have the best shot at developing a land breeze tonight.

Max temperature upper 90s.

High pressure will continue to drift to the SW. Winds will continue to be light, and with a more northwesterly component. Today's plume should not be advected far from the area, so the day should begin with much higher background levels. Plumes should again remain close to the source, and a reverse-flow event should take place.

Surface high pressure will drift to the SW, and be located offshore from Corpus Christi by Thursday. In addition, strong low pressure currently off the eastern shores of the US will drift westerly as well. As a result, winds should have a more northerly component through the period, bringing in drier and dirtier air. Precipitation chances near zero through the next 5 days.