2002 Atlantic Exceptional Storms ISIDORE and LILI.


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Positioned Lists of the 29 Atlantic Intense (Cat. 3 ) Hurricanes amid ... Satellite Images looking at the Eye of Isidore and Lili at Maximum Intensity ...
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Slide 1

2002 Atlantic Intense Hurricanes ISIDORE and LILI Pressure - Wind Relationships Intensity/Structure Satellite Images

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LOWEST MINIMUM SEA-LEVEL PRESSURE (hPa) 1. Mitch 905 2. Opal 916 3. Floyd 921 4. Felix \'95 929 5. Gert 930 6. Edouard 933 7. Lenny 933 8. Michelle 933 9. Isidore\'02 934 10. Luis 935 11. Hortense 935 12. Georges 937 13. Lili \'02 938 14. Keith 939 15. Cindy 942 MAXIMUM SURFACE WIND SPEED (ties) 1. Mitch 155 2. Georges 135 3. Floyd 135 4. Lenny 135 5. Opal 130 6. Gert 130 7. Edouard 125 8. Bret 125 9. Iris 125 10. Lili \'02 125 11. Felix \'95 120 12. Luis 120 13. Hortense 120 14. Cindy 120 15. Isaac 120 Ranked Lists of the 29 Atlantic Intense (Cat. 3+) Hurricanes amid 1995-2002

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16. Isaac 943 17. Bret 944 18. Fran 946 19. Erika 946 20. Iris 948 21. Marilyn 949 22. Alberto 950 23. Bonnie 954 24. Roxanne 956 25. Bertha 960 26. Isidore\'96 960 27. Lili\'96 960 28. Felix \'01 962 29. Erin 968 16. Keith 120 17. Michelle 120 18. Erika 110 19. Alberto 110 20. Isidore\'02 110 21. Fran 105 22. Erin 105 23. Marilyn 100 24. Roxanne 100 25. Bertha 100 26. Bonnie 100 27. Isidore\'96 100 28. Lili \'96 100 29. Felix \'01 100 Lists of the 29 Atlantic IH\'s, 1995-2002… CONTINUED

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1. Cindy 231 2. Luis 213 3. Erika 213 4. Floyd 201 5. Opal 188 6. Felix \'01 185 7. Fran 181 8. Isaac 163 9. Bertha 156 10. Bonnie 150 11. Georges 144 12. Isidore\'02 144 13. Lili \'02 143 14. Hortense 138 15. Gert 138 16. Felix \'95 135 17. Mitch 131 18. Roxanne 130 19. Edouard 125 20. Lili \'96 125 21. Alberto 125 22. Michelle 125 23. Lenny 124 24. Keith 115 25. Erin 113 26. Marilyn 105 27. Isidore\'96 90 28. Bret 78 29. Iris 69 ATL IH\'s positioned by Size – R-34 kt (n. mi.)

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Satellite Images contrasting the Eye of Isidore and Lili at Maximum Intensity GOES IR 4-km Mercator remapped, focused, zoomed by component of 2 MODIS 2-km Truecolor Visible - huge region MODIS 250-m Visible zoomed over eye

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Radius of Maximum Wind (RMW) From HRD Wind Analysis USAF recon Isidore – 20.7 km (11.2 n.mi.) 0600-1145 UTC/22 Sep Lili – 14.7 km (8.0 n.mi.) 1502-1829 UTC/2 Oct

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Radius of Maximum Wind (RMW) - from "Augmented Best Track" (DeMaria, CIRA) information (operational evaluations): Isidore – 10 n. mi. Lili – 5-10 n. mi. - from Kossin (CIMSS) calculation for RMW from IR pictures (R of –55C IR T) - Isidore – 12.0 km (6.5 n. mi.), 1145 UTC/22 Sep - Lili – 12.5 km (6.8 n. mi.), 1845 UTC/2 Oct

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RMW Influence on P-Wind Relationship For a given delta-p, littler RMW is connected with a bigger Vmax… ..

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"State of spiral weight bend" Influence on P-Wind Relationship All different elements consistent, a delta-p conveyed through the eyewall wind maxima, as an "angular" profile, will give a littler Vmax than a "u-molded" profile.

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Influences of the Tropical Cyclone Pressure : Wind Relationship Pressure : Wind = MSLP : Vmax MSLP = least ocean level weight Vmax = most extreme surface wind (10-m, 1-min wind) 1) p env = natural weight 2) RMW = range of greatest wind 3) Size (spiral degree of storms, 34-kt) 4) state of outspread profile of weight/wind 5) landfall impacts

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Conclusion on contrasts in Lili and Isidore\'s P-Wind Relationships They are likely because of a blend of all impacts with the exception of: 3) Size Different ecological weight, distinctive area mass impacts on wind, diverse RMW\'s and state of weight profile (Lili\'s more u-formed)

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Animated IR - Center Relative Average Images Each picture is found the middle value of over a 6-hr period utilizing every single accessible picture. Pictures are made at 3-hr interims.

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