Tuesday, July 24, 2007


HGB Area

 

Maximum 1-hr Ozone (ppb)

Maximum 8-hr Ozone (ppb)

AQF F1

129 C1

-

Statistical Model

130 (131)

-

Human Forecast

105

-

Acutal (Observed)

128 C572

-

Model Forecast Updated on 7/24/2007 6:20:01 AM. Previous Forecast in Parenthesis.

 

DISCUSSION

Today is much more cloudy than yesterday. Although weak wind is favorable for higher ozone, actual
ozone should depend on the cloud development. Also there could be ozone brought back to Galveston and
Brazoria in the afternoon depending on the wind direction - there is not much seabreeze activity in the past
two days due to strong gradient wind, but today that is a much higher probability.

Yesterday all (TCEQ, F1, Stat_Model and human) had a good forecast. The less cloudy sky along with NE wind
is almost certain to bring a high ozone day. There are two spots reaching 120 ppb yesterday in South Houston
and Manvel.

7/24/2007 10:15:36 AM