how does air pressure affect Katrina?

[H5N1]

Does Katrina create low pressure or vis versa?
What does the warm ocean water contribute to this?

[shraby]

1. Katrina has a low pressure.

The warm water feeds the hurricane.

[H5N1]

4. Does a lower pressure suck in more air?

Is that why the hurricane is getting bigger
with higher wind speed?

[Endangered Specie]

2. Warm water to a hurricane is like gas to a fire.

I belive it 'creates' a low pressure, but not sure, I just know that the lower the pressure the worse it gets.

[steve2470]

5. The faster, warmer and stronger air rises, the lower the air pressure

Hot water generates all of the above. Hurricanes are essentially giant low pressure areas.

[H5N1]

7. interesting

[geomon666]

3. Here you go

http://www.aoml.noaa.gov/hrd/tcfaq/tcfaqHED.html

[true_notes]

6. How does Air Pressure Affect Katrina?

Pressure is the essential mechanism in creating strong winds. If you look on a weather map, you will see lines that enclose each other. These are called Isobars (or lines of equal pressure). The closer these are to one another, the greater the wind speed will be because of the rate the air parcels are spinning at.

In relation to Katrina, The winds are so strong because these Isobars are so tightly packed together, and with a central pressure of 908 millibars,the storm has a thicker density to speed the spinning of the air parcels.

[KT2000]

10. Thanks

there is so much technical information about this hurricane on the news shows, it really helps to have some translation.

[MADem]

8. There's a load of hot air on a pig farm in Crawford

If the hurricane picks that up, the nation will be bisected by the storm....

[Surya Gayatri]

9. Just heard on WDSU streaming

that Katrina has the lowest barometirc pressure ever recorded for a storm in the Atlantic basin. Baaaad news. The lower the worse...:scared: Prayers for all those souls in LA, MS, and points north.