ATL: KATIA - Post Tropical - Discussion

[dwsqos2]

It would nice to have a halfway decent storm persist in the subtropical latitudes once. Thanks in part to an eyewall replacement cycle and in part to northwesterly shear, we now have another sprawling relatively weak hurricane with an enormous radius of maximum winds based on the latest recon data. This isn't exactly helping the high seasonal ACE forecasts.

[clfenwi]

URNT15 KNHC 061719
AF304 0112A KATIA HDOB 16 20110906
170930 2744N 06532W 6960 02976 //// +078 //// 162099 102 078 010 01
171000 2745N 06530W 6976 02964 //// +078 //// 163105 106 078 016 05
171030 2746N 06529W 6969 02981 //// +075 //// 157107 109 080 027 01
171100 2748N 06528W 6971 02989 //// +067 //// 145112 114 075 035 01
171130 2750N 06527W 6962 03009 //// +059 //// 140107 109 071 027 01
171200 2752N 06526W 6966 03014 //// +057 //// 140107 109 070 027 01
171230 2752N 06526W 6966 03014 //// +056 //// 139102 103 069 016 05
171300 2755N 06524W 6967 03030 //// +060 //// 142099 100 068 015 05
171330 2756N 06523W 6966 03039 //// +060 //// 142101 103 067 014 01
171400 2757N 06521W 6972 03039 //// +058 //// 138100 101 069 014 01
171430 2758N 06520W 6958 03058 //// +056 //// 138104 105 067 014 01
171500 2800N 06519W 6972 03046 //// +054 //// 139103 103 062 015 01
171530 2801N 06517W 6969 03052 //// +054 //// 141102 103 063 014 01
171600 2802N 06516W 6963 03064 //// +053 //// 142100 102 064 011 05
171630 2802N 06515W 6969 03061 //// +052 //// 136098 102 063 010 01
171700 2802N 06513W 6962 03071 //// +043 //// 135101 103 061 009 01
171730 2803N 06512W 6962 03075 //// +044 //// 137101 104 061 012 01
171800 2803N 06511W 6963 03080 //// +035 //// 135102 104 /// /// 05
171830 2804N 06510W 6968 03078 //// +051 //// 134106 106 057 010 01
171900 2806N 06509W 6975 03073 //// +043 //// 131109 110 056 008 01

[clfenwi]

URNT12 KNHC 061725
VORTEX DATA MESSAGE AL122011
A. 06/16:55:00Z
B. 27 deg 10 min N
066 deg 14 min W
C. 700 mb 2768 m
D. 66 kt
E. 223 deg 36 nm
F. 313 deg 85 kt
G. 223 deg 40 nm
H. 963 mb
I. 12 C / 3047 m
J. 16 C / 3045 m
K. 13 C / NA
L. NA
M. NA
N. 12345 / 7
O. 0.02 / 1 nm
P. AF304 0112A KATIA OB 04
MAX FL WIND 85 KT SW QUAD 16:43:30Z
MAX OUTBOUND FL WIND 114 KT NE QUAD 17:11:00Z
MAX FL TEMP 17 C 220 / 6 NM FROM FL CNTR

[tolakram]

Cat 3 is relatively weak?

Category 4 and 5 hurricanes are rare, I think people tend to forget this when thinking of 2005 and then 2007.

Take a look at the list of cat 5's from Wikipedia: http://en.wikipedia.org/wiki/List_of_Ca ... hurricanes

and Cat 4's: http://en.wikipedia.org/wiki/List_of_Ca ... hurricanes

2011 has it's cat 4 already, Katia.

[clfenwi]

URNT15 KNHC 061729
AF304 0112A KATIA HDOB 17 20110906
171930 2807N 06508W 6964 03093 0034 +051 //// 130108 110 053 008 01
172000 2809N 06507W 6965 03098 0032 +057 //// 129106 107 052 008 01
172030 2811N 06506W 6967 03101 0038 +057 //// 128100 101 051 010 05
172100 2812N 06505W 6967 03104 0042 +057 //// 128097 098 053 011 01
172130 2813N 06504W 6970 03104 0053 +049 //// 128093 095 053 011 01
172200 2814N 06503W 6967 03112 0055 +054 //// 127094 094 052 011 01
172230 2815N 06501W 6967 03117 0059 +055 //// 126095 097 052 010 01
172300 2816N 06500W 6963 03125 0060 +058 //// 128091 093 051 010 01
172330 2817N 06459W 6968 03123 0068 +052 //// 127088 088 051 010 01
172400 2818N 06458W 6966 03129 0066 +058 //// 128089 090 050 010 01
172430 2819N 06457W 6967 03129 0058 +066 +062 128089 090 051 009 00
172500 2820N 06455W 6967 03132 0069 +061 //// 128087 087 049 011 01
172530 2821N 06454W 6965 03138 0073 +061 //// 129086 087 049 013 01
172600 2822N 06453W 6971 03134 0077 +061 //// 129085 086 050 014 01
172630 2823N 06452W 6973 03134 0075 +062 //// 128084 084 050 012 01
172700 2824N 06450W 6964 03145 0089 +053 //// 129084 084 048 010 01
172730 2825N 06449W 6965 03145 0073 +067 +061 130081 083 048 008 00
172800 2826N 06448W 6969 03145 0069 +073 +060 129081 082 046 005 00
172830 2827N 06447W 6963 03151 0067 +077 +054 128081 081 046 003 00
172900 2828N 06445W 6967 03149 0067 +079 +051 130081 083 045 003 03
$$

[cycloneye]

BULLETIN
HURRICANE KATIA INTERMEDIATE ADVISORY NUMBER 34A
NWS NATIONAL HURRICANE CENTER MIAMI FL AL122011
200 PM AST TUE SEP 06 2011

...HURRICANE HUNTER PLANE FINDS KATIA A LITTLE WEAKER...


SUMMARY OF 200 PM AST...1800 UTC...INFORMATION
----------------------------------------------
LOCATION...27.3N 66.4W
ABOUT 365 MI...590 KM SSW OF BERMUDA
MAXIMUM SUSTAINED WINDS...115 MPH...185 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...963 MB...28.44 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...

NONE.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A TROPICAL STORM WATCH IS IN EFFECT FOR...
* BERMUDA

A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS.

FOR ADDITIONAL STORM INFORMATION...PLEASE MONITOR PRODUCTS ISSUED BY
THE BERMUDA WEATHER SERVICE.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 200 PM AST...1800 UTC...THE CENTER OF HURRICANE KATIA WAS
LOCATED NEAR LATITUDE 27.3 NORTH...LONGITUDE 66.4 WEST. KATIA IS
MOVING TOWARD THE NORTHWEST NEAR 9 MPH...15 KM/H...AND THIS MOTION
IS EXPECTED TO CONTINUE THROUGH WEDNESDAY...FOLLOWED BY A TURN
TOWARD THE NORTH-NORTHWEST AND NORTH BY THURSDAY. ON THE FORECAST
TRACK...THE CORE OF KATIA IS EXPECTED TO MOVE OVER THE WESTERN
ATLANTIC BETWEEN BERMUDA AND THE EAST COAST OF THE UNITED STATES.

DATA FROM AN AIR FORCE RESERVE RECONNAISSANCE AIRCRAFT INDICATE THAT
THAT MAXIMUM SUSTAINED WINDS HAVE DECREASED TO NEAR 115 MPH...185
KM/H...WITH HIGHER GUSTS. KATIA IS A CATEGORY THREE HURRICANE ON
THE SAFFIR-SIMPSON HURRICANE WIND SCALE. FLUCTUATIONS IN INTENSITY
ARE POSSIBLE THROUGH WEDNESDAY...AND WEAKENING IS EXPECTED BY
WEDNESDAY NIGHT AND THURSDAY.

HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 65 MILES...100 KM...FROM
THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 205
MILES...335 KM.

MINIMUM CENTRAL PRESSURE RECENTLY MEASURED BY THE HURRICANE HUNTER
PLANE IS 963 MB...28.44 INCHES.


HAZARDS AFFECTING LAND
----------------------
SURF...LARGE SWELLS GENERATED BY KATIA WILL CONTINUE TO AFFECT MOST
OF THE EAST COAST OF THE UNITED STATES...BERMUDA...THE GREATER
ANTILLES...AND EAST-FACING BEACHES OF THE BAHAMAS DURING THE NEXT
FEW DAYS. THESE SWELLS ARE LIKELY TO CAUSE LIFE-THREATENING SURF
AND RIP CURRENT CONDITIONS. PLEASE CONSULT PRODUCTS FROM YOUR LOCAL
WEATHER SERVICE OFFICE FOR ADDITIONAL INFORMATION.

WIND...TROPICAL-STORM-FORCE WINDS...ESPECIALLY IN GUSTS...ARE
POSSIBLE ON BERMUDA THROUGH THURSDAY.

RAINFALL...KATIA IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS OF
1 TO 2 INCHES ACROSS BERMUDA.


NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...500 PM AST.

$$
FORECASTER BERG/AVILA

[dwsqos2]

Look at the recon data; peak SFMR wind was 80 knots. Katia probably isn't a category 3; it looks like a 90ish knot storm.

In essence we're probably looking a hurricane that spent 12-18 hours as a major; no that isn't that impressive.

[clfenwi]

There was a delay while obs were backfilled... they've now worked their way around to the northwest corner of the storm and are headed towards the center.

URNT15 KNHC 061814
AF304 0112A KATIA HDOB 19 20110906
173930 2833N 06538W 6964 03111 0029 +068 //// 108090 091 055 011 01
174000 2833N 06538W 6964 03111 0032 +064 //// 107090 091 055 011 01
174030 2833N 06544W 6971 03097 0026 +066 +066 106093 095 056 011 00
174100 2833N 06546W 6964 03103 0020 +070 +065 105095 095 056 012 00
174130 2834N 06549W 6966 03098 0018 +070 +066 103096 097 056 009 00
174200 2834N 06552W 6969 03094 0012 +072 +067 102097 098 057 008 00
174230 2834N 06555W 6973 03086 0011 +072 +067 103097 097 056 007 00
174300 2834N 06558W 6962 03098 0009 +071 +068 102098 098 056 007 00
174330 2834N 06601W 6966 03094 0005 +074 +068 100096 097 056 005 00
174400 2835N 06604W 6967 03091 0004 +074 +070 099095 095 055 005 00
174430 2835N 06606W 6967 03091 0000 +078 +073 097094 095 055 005 00
174500 2835N 06609W 6968 03090 9995 +080 +075 095091 092 054 005 00
174530 2835N 06612W 6966 03092 9988 +086 +076 095089 089 056 004 00
174600 2835N 06615W 6967 03089 9987 +087 +068 090089 090 056 005 00
174630 2835N 06618W 6970 03086 9987 +085 +071 087088 090 058 006 00
174700 2836N 06621W 6967 03090 9987 +084 +072 085089 090 056 007 00
174730 2836N 06623W 6967 03087 9986 +085 +074 084087 087 054 006 00
174800 2836N 06626W 6967 03090 9981 +093 +067 084086 087 054 004 00
174830 2836N 06629W 6965 03094 9977 +097 +053 084087 089 053 004 00
174900 2836N 06632W 6970 03089 9976 +100 +043 083089 090 052 001 00

URNT15 KNHC 061815
AF304 0112A KATIA HDOB 20 20110906
174930 2836N 06634W 6969 03091 9975 +104 +040 082084 085 053 001 00
175000 2837N 06637W 6965 03097 9976 +100 +047 081084 085 052 002 00
175030 2837N 06640W 6964 03097 9978 +101 +060 083086 087 051 002 00
175100 2837N 06643W 6969 03097 9981 +101 +056 082085 087 051 002 00
175130 2837N 06645W 6968 03097 9988 +096 +057 082085 086 050 004 00
175200 2837N 06648W 6969 03100 9996 +091 +064 080084 084 050 002 00
175230 2837N 06651W 6965 03106 0003 +087 +069 081083 085 049 003 00
175300 2837N 06654W 6969 03102 0003 +089 +069 076077 079 050 003 00
175330 2838N 06656W 6963 03112 0010 +084 +072 075077 078 049 002 00
175400 2838N 06659W 6970 03106 0008 +090 +068 076077 077 048 001 00
175430 2838N 06702W 6965 03114 0009 +090 +060 076076 076 048 002 00
175500 2838N 06704W 6970 03111 0005 +095 +059 077070 072 047 003 00
175530 2838N 06707W 6965 03117 0026 +078 +059 080073 077 047 003 00
175600 2838N 06709W 6987 03091 //// +053 //// 077077 079 045 006 01
175630 2838N 06712W 6963 03124 0034 +064 //// 074074 075 046 007 01
175700 2839N 06715W 6970 03119 0036 +067 //// 076071 072 046 003 01
175730 2839N 06717W 6952 03141 0034 +074 //// 072066 067 045 002 01
175800 2839N 06720W 6965 03126 0032 +082 //// 070065 066 042 002 01
175830 2839N 06722W 6964 03129 0032 +084 +069 069064 065 041 001 00
175900 2839N 06725W 6973 03123 0031 +088 +060 067063 063 041 001 00


URNT15 KNHC 061810
AF304 0112A KATIA HDOB 21 20110906
175930 2839N 06727W 6964 03135 0041 +082 +053 065063 064 039 003 00
180000 2839N 06730W 6963 03137 0039 +087 +049 064067 069 039 000 00
180030 2839N 06732W 6972 03130 0037 +090 +051 063068 070 039 002 00
180100 2840N 06735W 6966 03137 0038 +090 +059 065064 065 039 001 00
180130 2840N 06737W 6967 03136 0041 +088 +053 064063 064 039 000 00
180200 2840N 06740W 6966 03137 0041 +085 +051 064064 064 037 001 00
180230 2840N 06742W 6967 03140 0046 +085 +048 062064 065 037 000 00
180300 2840N 06745W 6968 03140 0056 +080 +048 060062 063 037 000 00
180330 2840N 06747W 6969 03142 0057 +082 +047 059064 065 036 000 00
180400 2840N 06750W 6962 03151 0058 +081 +044 059065 066 035 001 00
180430 2840N 06752W 6971 03141 0063 +079 +044 058065 066 032 001 03
180500 2839N 06754W 6969 03146 0067 +077 +045 056060 063 /// /// 03
180530 2837N 06753W 6968 03143 0059 +082 +046 057057 058 034 001 03
180600 2837N 06753W 6968 03143 0052 +085 +045 057058 058 035 001 00
180630 2835N 06750W 6968 03140 0048 +088 +044 056057 057 036 000 00
180700 2834N 06749W 6967 03140 0046 +086 +045 057053 054 037 000 00
180730 2833N 06748W 6966 03137 0042 +085 +048 060056 057 037 001 00
180800 2832N 06746W 6965 03136 0039 +088 +048 062059 060 039 000 00
180830 2831N 06745W 6969 03129 0032 +090 +048 062060 061 039 000 00
180900 2830N 06744W 6966 03130 0032 +085 +050 061062 063 039 000 00

[clfenwi]

URNT15 KNHC 061819
AF304 0112A KATIA HDOB 22 20110906
180930 2829N 06743W 6970 03121 0033 +084 +060 059061 062 040 001 00
181000 2828N 06741W 6969 03120 0031 +082 +067 059057 059 041 000 00
181030 2827N 06740W 6968 03120 0027 +083 +069 058056 058 040 001 00
181100 2826N 06739W 6971 03114 0033 +077 //// 055055 055 041 002 01
181130 2824N 06737W 6965 03123 0035 +068 //// 053062 067 042 003 01
181200 2823N 06736W 6966 03119 0035 +072 //// 057064 065 042 003 01
181230 2822N 06735W 6974 03106 0033 +068 //// 060068 072 043 005 01
181300 2821N 06734W 6964 03114 0025 +072 //// 059071 072 043 003 01
181330 2820N 06733W 6958 03119 0011 +082 +077 060068 069 044 002 00
181400 2819N 06731W 6975 03095 0013 +079 +077 060070 071 044 004 00
181430 2818N 06730W 6962 03107 0011 +078 +073 057069 070 043 001 00
181500 2817N 06729W 6969 03095 0002 +083 +070 055072 073 044 002 00
181530 2816N 06728W 6973 03091 9994 +086 +063 055077 079 045 003 00
181600 2815N 06727W 6966 03092 9993 +082 +069 055079 079 046 002 00
181630 2814N 06725W 6966 03087 0005 +061 //// 054079 080 047 004 01
181700 2813N 06724W 6964 03089 9993 +072 //// 057084 086 049 005 01
181730 2812N 06723W 6970 03074 9980 +081 //// 057084 086 051 006 01
181800 2811N 06722W 6973 03065 //// +063 //// 052084 088 053 005 01
181830 2810N 06720W 6980 03054 //// +054 //// 051081 083 053 012 01
181900 2809N 06719W 6961 03073 //// +062 //// 057081 082 054 005 01

[clfenwi]

URNT15 KNHC 061829
AF304 0112A KATIA HDOB 23 20110906
181930 2808N 06718W 6971 03058 //// +084 //// 059079 080 056 004 01
182000 2807N 06717W 6964 03062 //// +085 //// 057079 081 056 003 01
182030 2805N 06716W 6962 03062 //// +087 //// 056078 078 058 002 01
182100 2804N 06715W 6967 03047 //// +090 //// 055079 081 058 002 01
182130 2803N 06713W 6969 03039 //// +092 //// 057079 080 063 006 01
182200 2802N 06712W 6965 03037 //// +094 //// 060080 083 063 005 01
182230 2801N 06711W 6963 03035 //// +095 //// 058081 082 062 010 01
182300 2800N 06710W 6971 03020 //// +090 //// 055086 090 063 007 01
182330 2759N 06709W 6961 03024 //// +074 //// 052088 092 063 010 01
182400 2758N 06707W 6970 03008 //// +088 //// 053079 084 070 011 01
182430 2757N 06706W 6967 03005 //// +090 //// 056074 078 069 013 01
182500 2756N 06705W 6980 02981 //// +081 //// 058073 078 072 019 01
182530 2755N 06704W 6949 03008 //// +070 //// 063075 075 078 018 01
182600 2754N 06703W 6975 02963 //// +078 //// 072071 073 081 018 01
182630 2753N 06702W 6963 02964 //// +080 //// 071069 070 081 017 01
182700 2752N 06700W 6971 02951 //// +085 //// 066063 067 079 014 01
182730 2751N 06659W 6966 02958 //// +087 //// 057054 056 069 011 01
182800 2750N 06658W 6969 02947 //// +100 //// 047051 052 068 010 01
182830 2749N 06656W 6972 02933 //// +101 //// 045056 060 067 010 01
182900 2747N 06655W 6967 02938 //// +110 //// 037058 061 064 005 01

[Chris_in_Tampa]

I may post an image infrequently. Someone else can post more frequently if they want. Through OB 22, 11AM and 5AM EDT NHC forecast tracks included:

[clfenwi]

URNT15 KNHC 061839
AF304 0112A KATIA HDOB 24 20110906
182930 2746N 06654W 6970 02929 //// +113 //// 040060 062 063 001 01
183000 2745N 06652W 6961 02931 //// +123 //// 034058 059 059 004 01
183030 2744N 06651W 6966 02919 //// +129 //// 032057 057 058 002 01
183100 2742N 06649W 6967 02911 //// +130 //// 034057 059 058 000 05
183130 2741N 06648W 6967 02902 //// +134 //// 035058 059 056 000 05
183200 2740N 06646W 6967 02896 //// +141 //// 034058 058 057 001 01
183230 2740N 06646W 6967 02896 //// +149 //// 033054 055 057 001 01
183300 2739N 06643W 6967 02880 //// +152 //// 034052 054 057 001 01
183330 2738N 06642W 6970 02868 //// +151 //// 037051 051 058 002 01
183400 2737N 06640W 6966 02866 //// +153 //// 036052 052 057 002 01
183430 2736N 06638W 6971 02847 //// +165 //// 032052 053 055 001 01
183500 2735N 06637W 6969 02841 //// +165 //// 034044 046 054 002 01
183530 2735N 06635W 6966 02836 //// +164 //// 036039 041 050 001 01
183600 2734N 06633W 6970 02822 //// +159 //// 043033 035 046 002 05
183630 2733N 06632W 6966 02821 //// +153 //// 039028 029 037 004 01
183700 2732N 06630W 6969 02811 //// +151 //// 037027 028 030 002 01
183730 2731N 06628W 6966 02810 //// +145 //// 035021 024 022 002 01
183800 2730N 06627W 6968 02802 //// +150 //// 043018 018 012 002 05
183830 2729N 06625W 6965 02801 //// +159 //// 032011 012 009 001 01
183900 2728N 06623W 6958 02808 //// +157 //// 018008 010 007 003 05

[clfenwi]

URNT15 KNHC 061849
AF304 0112A KATIA HDOB 25 20110906
183930 2727N 06622W 6957 02810 //// +157 //// 017003 005 015 001 05
184000 2727N 06620W 6970 02793 //// +153 //// 199003 004 008 003 05
184030 2726N 06618W 6970 02791 //// +143 //// 211006 007 012 000 01
184100 2726N 06616W 6963 02799 //// +146 //// 229011 013 012 000 05
184130 2724N 06615W 6974 02791 //// +143 //// 219018 021 010 002 01
184200 2723N 06613W 6965 02806 //// +133 //// 214024 025 013 003 01
184230 2722N 06612W 6966 02807 //// +133 //// 216027 028 027 002 01
184300 2721N 06611W 6971 02802 //// +138 //// 217027 028 024 004 01
184330 2720N 06609W 6973 02806 //// +136 //// 219029 031 034 004 01
184400 2718N 06608W 6964 02818 //// +133 //// 225033 034 043 006 01
184430 2717N 06606W 6966 02822 //// +132 //// 227039 042 051 011 01
184500 2716N 06605W 6970 02822 //// +118 //// 229053 059 055 020 01
184530 2715N 06604W 6973 02827 //// +097 //// 227065 066 064 028 01
184600 2713N 06603W 6962 02849 //// +093 //// 222069 070 068 022 01
184630 2712N 06601W 6969 02850 //// +089 //// 217071 072 069 022 01
184700 2711N 06600W 6968 02861 //// +088 //// 213076 076 066 032 01
184730 2710N 06559W 6962 02880 //// +099 //// 212078 078 064 030 01
184800 2709N 06558W 6969 02881 //// +112 //// 213078 079 061 027 01
184830 2708N 06557W 6966 02892 //// +095 //// 214076 077 053 032 01
184900 2707N 06556W 6973 02892 //// +079 //// 214075 075 059 018 01

[Chris_in_Tampa]

Through OB 25:

[clfenwi]

URNT15 KNHC 061901
AF304 0112A KATIA HDOB 26 20110906
184930 2706N 06554W 6964 02914 //// +088 //// 216075 076 061 011 01
185000 2705N 06553W 6973 02912 //// +096 //// 216073 073 060 011 01
185030 2704N 06552W 6967 02928 //// +101 //// 219074 075 039 033 01
185100 2703N 06551W 6967 02936 //// +104 //// 218075 076 052 029 01
185130 2701N 06550W 6965 02945 //// +102 //// 218076 076 070 029 01
185200 2700N 06549W 6972 02942 //// +083 //// 221080 084 130 033 01
185230 2659N 06547W 6967 02954 //// +075 //// 219088 092 065 043 01
185300 2658N 06546W 6970 02957 //// +072 //// 218093 095 049 051 01
185330 2657N 06545W 6976 02959 //// +070 //// 219095 096 042 041 01
185400 2656N 06544W 6969 02976 //// +070 //// 220094 096 055 030 01
185430 2655N 06543W 6972 02982 //// +071 //// 220096 097 061 016 01
185500 2654N 06542W 6966 02996 //// +070 //// 219093 095 062 013 01
185530 2653N 06541W 6967 03003 //// +072 //// 219088 089 060 010 01
185600 2652N 06539W 6968 03007 //// +087 //// 218088 089 060 007 01
185630 2651N 06538W 6969 03014 //// +085 //// 216085 088 058 008 01
185700 2650N 06537W 6968 03023 //// +089 //// 215082 082 058 007 01
185730 2649N 06536W 6966 03031 //// +089 //// 216082 083 058 007 01
185800 2648N 06535W 6969 03032 //// +085 //// 215081 082 056 005 01
185830 2646N 06534W 6965 03041 //// +092 //// 215080 081 056 005 01
185900 2645N 06533W 6971 03038 //// +095 //// 216078 078 055 004 01

[tobol.7uno]

You can see Katia losing structure today from this microwave image. This is probably not an eyewall replacement, it is probably just weakening.

[clfenwi]

URNT15 KNHC 061909
AF304 0112A KATIA HDOB 27 20110906
185930 2644N 06531W 6969 03048 //// +090 //// 217077 078 052 003 01
190000 2643N 06530W 6968 03053 //// +090 //// 217076 076 052 003 01
190030 2642N 06529W 6967 03058 //// +090 //// 217076 076 053 002 01
190100 2641N 06528W 6969 03059 //// +087 //// 217074 075 052 003 01
190130 2640N 06527W 6967 03066 //// +084 //// 217072 072 051 005 01
190200 2639N 06526W 6972 03063 //// +075 //// 215072 073 051 012 01
190230 2638N 06524W 6964 03074 //// +072 //// 217071 072 058 016 01
190300 2637N 06523W 6971 03067 //// +072 //// 218074 075 059 015 01
190330 2635N 06522W 6974 03070 //// +074 //// 218079 082 063 020 01
190400 2634N 06521W 6948 03102 //// +064 //// 214082 085 052 035 01
190430 2633N 06520W 6982 03052 //// +044 //// 204083 084 051 033 01
190500 2632N 06519W 6980 03065 //// +047 //// 204088 091 055 025 01
190530 2631N 06518W 6969 03080 //// +048 //// 201089 092 056 025 01
190600 2630N 06517W 6972 03077 //// +045 //// 201086 089 055 020 01
190630 2629N 06516W 6977 03080 //// +046 //// 209084 087 057 017 01
190700 2628N 06515W 6967 03094 //// +046 //// 209081 086 055 013 01
190730 2628N 06515W 6967 03094 //// +049 //// 208079 083 054 010 01
190800 2626N 06513W 6970 03102 //// +071 //// 208079 080 051 007 01
190830 2625N 06512W 6969 03108 //// +077 //// 209080 080 050 004 01
190900 2624N 06510W 6970 03109 //// +075 //// 209078 079 051 003 01

[Chris_in_Tampa]

Through OB 27:

[HenkL]

000
URNT12 KNHC 061911
VORTEX DATA MESSAGE AL122011
A. 06/18:39:40Z
B. 27 deg 27 min N
066 deg 21 min W
C. 700 mb 2759 m
D. 81 kt
E. 303 deg 44 nm
F. 053 deg 91 kt
G. 304 deg 53 nm
H. 962 mb
I. 9 C / 3044 m
J. 16 C / 3050 m
K. NA / NA
L. NA
M. NA
N. 12345 / 7
O. 0.02 / 1 nm
P. AF304 0112A KATIA OB 09
MAX FL WIND 114 KT NE QUAD 17:11:00Z
MAX OUTBOUND FL WIND 97 KT SE QUAD 18:54:30Z
MAX FL TEMP 17 C 297 / 16 NM FROM FL CNTR
;

[Chris_in_Tampa]

Still through OB 27: