ATL: IRMA - Post-Tropical - Discussion

[NDG]

Irma still is a Cat 5, NW quadrant readings.

113200 1815N 06321W 6965 02691 9532 +141 +141 074145 150 146 061 00
113230 1814N 06321W 6948 02675 9491 +140 +140 076149 151 149 029 03
113300 1813N 06320W 6944 02635 9430 +142 //// 075133 146 152 022 05
113330 1811N 06320W 6958 02571 //// +126 //// 069103 120 151 000 01

[euro6208]

Raw ADT still supporting a 7.0... This storm just keeps going. Recon just measured 152 kt SFMR.

Finally ADT is at Cat 5. it's irrevalant.

[GCANE]

Finally got a good core analysis.
I have never seen a TC push up the tropopause like that before.

[GCANE]

[SNOW_JOKE]

The strongest of the winds have been observed to the NE quadrant of Irma since yesterday where the 185mph sustained winds were recorded. Unfortunately for St.Maarten unless there's a major wobble by Irma, which isn't likely, the island will be entering those strongest winds within the next half-hour. I'm just hoping that those people currently in the eye who are taking pictures and livestreaming via FB haven't wandered away too far from their shelters.

[SouthDadeFish]

This is one alarming satellite loop:

 https://twitter.com/philklotzbach/status/905394877030047745




https://twitter.com/philklotzbach/status/905394877030047745

[DESTRUCTION5]

Man I hope she stair steps for Luis and PR today...

[painkillerr]

Winds picking up from the west now here in St. Thomas

[Extratropical94]

URNT15 KNHC 061143
AF307 1211A IRMA HDOB 26 20170906
113430 1808N 06319W 6922 02536 9241 +150 //// 063073 083 108 007 05
113500 1806N 06318W 6987 02437 9205 +184 +151 065044 060 068 003 03
113530 1805N 06317W 6978 02432 9174 +209 +133 066024 036 041 001 03
113600 1803N 06316W 6973 02438 9163 +218 +128 057011 019 030 001 00
113630 1802N 06315W 6978 02431 9160 +223 +124 209005 007 024 000 03
113700 1800N 06314W 6974 02441 9174 +209 +129 230011 013 025 000 03
113730 1759N 06313W 6965 02464 9184 +216 +114 239029 036 037 001 03
113800 1757N 06311W 6984 02470 9222 +200 +127 231052 059 046 000 00
113830 1756N 06310W 6971 02511 9270 +178 +138 226072 080 066 002 00
113900 1755N 06309W 6966 02570 9336 +151 +150 229109 116 092 004 01
113930 1754N 06308W 6984 02598 9388 +165 +147 223127 131 122 009 00
114000 1753N 06307W 6955 02688 9483 +144 +144 220131 133 124 014 03
114030 1752N 06306W 6974 02718 9545 +143 +143 220127 131 /// /// 03
114100 1751N 06305W 6977 02764 9615 +139 +139 222120 123 116 030 00
114130 1750N 06304W 6971 02822 9664 +129 //// 221113 116 106 014 01
114200 1749N 06302W 6980 02843 9683 +129 +122 222107 112 100 004 03
114230 1748N 06301W 6970 02896 9720 +127 +105 220100 104 093 000 03
114300 1747N 06300W 6974 02910 9753 +127 +102 218094 096 090 000 00
114330 1746N 06259W 6977 02933 //// +102 //// 219089 092 089 001 01
114400 1744N 06258W 6978 02951 9831 +110 //// 219085 086 083 003 01

[SouthDadeFish]

Latest recon extrapolated pressure is 916 mb so the strengthening has at least temporarily paused.

[KBBOCA]

Unofficial pressure of 917.6 on St Barth this a.m.

 https://twitter.com/Meteos_/status/905396625325129730

[KBBOCA]

Praying for MSBee... the photos out of St. Maarten/St Martin are terrible and they still had the backside (worst) to come.

 https://twitter.com/hurricanetrack/status/905397469902712832

[Extratropical94]

URNT15 KNHC 061154
AF307 1211A IRMA HDOB 27 20170906
114430 1743N 06257W 6972 02976 9868 +111 //// 218080 084 079 008 05
114500 1742N 06255W 6982 02973 9906 +099 +099 211087 089 069 031 03
114530 1741N 06254W 6967 03002 9910 +094 +094 213085 087 066 017 00
114600 1740N 06253W 6970 03008 9890 +098 +098 212083 084 059 007 00
114630 1739N 06252W 6976 03016 9897 +101 +098 214081 082 059 005 00
114700 1738N 06251W 6971 03027 9904 +102 +093 215080 081 057 005 00
114730 1737N 06250W 6977 03029 9914 +104 +098 214076 078 055 004 00
114800 1736N 06249W 6974 03041 9912 +108 +100 215073 076 056 001 00
114830 1735N 06247W 6974 03048 9920 +111 +088 217072 072 056 000 03
114900 1733N 06246W 6975 03057 9933 +108 +088 215067 071 053 000 00
114930 1732N 06245W 6973 03065 9943 +104 +092 213064 065 050 001 00
115000 1731N 06244W 6978 03063 9953 +100 +090 213062 063 049 000 00
115030 1730N 06243W 6969 03085 //// +095 //// 213060 061 044 001 01
115100 1729N 06241W 6980 03076 9968 +099 +092 214058 059 045 001 05
115130 1728N 06240W 6973 03085 9970 +102 +082 211058 059 043 001 00
115200 1727N 06239W 6972 03088 9968 +106 +079 211056 057 045 000 00
115230 1725N 06238W 6974 03090 9971 +108 +080 211054 055 044 000 03
115300 1724N 06237W 6971 03095 9976 +104 +086 210054 054 044 000 00
115330 1723N 06235W 6974 03097 9974 +110 +077 211055 056 042 000 00
115400 1722N 06234W 6973 03102 9981 +109 +078 211054 055 044 001 00

[flamingosun]

The news from the Leewards is just heartbreaking, and we know it's just beginning to come in . . . prayers for all in all of the islands that are now under the gun.

[Extratropical94]

Center dropsonde: 923 mb with 13 knots, likely 921-22

UZNT13 KNHC 061154
XXAA 56127 99180 70633 04383 99923 28212 11013 00/// ///// /////
92/// ///// ///// 85727 23605 11515 70418 22260 20006 88999 77999
31313 09608 81136
61616 AF307 1211A IRMA OB 07
62626 CENTER MBL WND 12513 AEV 33304 DLM WND 12012 922698 WL150 1
2514 080 REL 1803N06325W 113625 SPG 1804N06326W 114000 =
XXBB 56128 99180 70633 04383 00923 28212 11850 23605 22737 18017
33725 21859 44710 22461 55698 22260
21212 00923 11013 11909 12514 22850 11515 33803 11015 44759 12514
55736 10511 66698 21007
31313 09608 81136
61616 AF307 1211A IRMA OB 07
62626 CENTER MBL WND 12513 AEV 33304 DLM WND 12012 922698 WL150 1
2514 080 REL 1803N06325W 113625 SPG 1804N06326W 114000 =

[Extratropical94]

Pressure is increasing a bit, good news.

Center dropsonde 923/13 kts

[euro6208]

Just the 3rd Cat 5 and strongest since 2005. I can imagine everyone's excitement.

[GCANE]

Weather Station on Barbuda.
Looks like a lot of instruments got knocked out including anemometers.
Still getting water-level, pressure, & temp though.

https://tidesandcurrents.noaa.gov/stati ... id=9761115

[KBBOCA]

And from the French side - Marigot St. Martin:

 https://twitter.com/bienglace/status/905398354275946496




Note: All these pix from Twitter are unverified, but I'm trying to copy tweets from only reputable sources.

[xtyphooncyclonex]

Just the 3rd Cat 5 and strongest since 2005. I can imagine everyone's excitement.

Excitement turned into angst and fear for its impacts over the Antilles and potentially Florida