Irma is an extremely impressive hurricane in both infrared and
visible satellite images. Experimental GOES-16 one-minute visible
satellite pictures show a distinct 25-30 n mi wide eye with several
mesovortices rotating within with eye. The aircraft have not
sampled the northeastern eyewall where the strongest winds were
measured shortly before 1200 UTC this morning, but the Air Force
plane will be entering the eye in that quadrant momentarily. A peak
SFMR wind of 154 kt was reported, with a few others of 149-150 kt.
Based on these data the initial intensity is set at 155 kt for this
advisory. This makes Irma the strongest hurricane in the Atlantic
basin outside of the Caribbean Sea and Gulf of Mexico in the NHC
records.

The above is a section from this discussion:
http://www.nhc.noaa.gov/text/refresh...l/051446.shtml

See here for forecast tracks etc:
http://www.nhc.noaa.gov/?atlc

--
Graham P Davis, Bracknell, Berks. [Retd meteorologist/programmer]
Web-site: http://www.scarlet-jade.com/
“Like sewage, smartphones, and Donald Trump, some things are just
inevitable.� [The Doctor]

On Tuesday, 5 September 2017 21:40:29 UTC+1, Graham P Davis wrote:
Irma is an extremely impressive hurricane in both infrared and
visible satellite images. Experimental GOES-16 one-minute visible
satellite pictures show a distinct 25-30 n mi wide eye with several
mesovortices rotating within with eye. The aircraft have not
sampled the northeastern eyewall where the strongest winds were
measured shortly before 1200 UTC this morning, but the Air Force
plane will be entering the eye in that quadrant momentarily. A peak
SFMR wind of 154 kt was reported, with a few others of 149-150 kt.
Based on these data the initial intensity is set at 155 kt for this
advisory. This makes Irma the strongest hurricane in the Atlantic
basin outside of the Caribbean Sea and Gulf of Mexico in the NHC
records.

The above is a section from this discussion:
http://www.nhc.noaa.gov/text/refresh...l/051446.shtml

See here for forecast tracks etc:
http://www.nhc.noaa.gov/?atlc

--
Graham P Davis, Bracknell, Berks. [Retd meteorologist/programmer]
Web-site: http://www.scarlet-jade.com/
“Like sewage, smartphones, and Donald Trump, some things are just
inevitable.� [The Doctor]

I wonder who told them fecals to stop shouting?

1. Irma is a potentially catastrophic category 5 hurricane and will
bring life-threatening wind, storm surge, and rainfall hazards to
portions of the northeastern Leeward Islands tonight and tomorrow.
These hazards will spread into the Virgin Islands and Puerto
Rico tomorrow. Preparations should be rushed to completion before
the arrival of tropical-storm force winds tomorrow morning in Virgin
Islands and Puerto Rico.

Lets hope the Clignons aren't tempted there.

"Graham P Davis" wrote in message
...
Irma is an extremely impressive hurricane in both infrared and
visible satellite images. Experimental GOES-16 one-minute visible
satellite pictures show a distinct 25-30 n mi wide eye with several
mesovortices rotating within with eye. The aircraft have not
sampled the northeastern eyewall where the strongest winds were
measured shortly before 1200 UTC this morning, but the Air Force
plane will be entering the eye in that quadrant momentarily. A peak
SFMR wind of 154 kt was reported, with a few others of 149-150 kt.
Based on these data the initial intensity is set at 155 kt for this
advisory. This makes Irma the strongest hurricane in the Atlantic
basin outside of the Caribbean Sea and Gulf of Mexico in the NHC
records.

The above is a section from this discussion:
http://www.nhc.noaa.gov/text/refresh...l/051446.shtml

See here for forecast tracks etc:
http://www.nhc.noaa.gov/?atlc

--
Graham P Davis, Bracknell, Berks. [Retd meteorologist/programmer]
Web-site: http://www.scarlet-jade.com/
"Like sewage, smartphones, and Donald Trump, some things are just
inevitable." [The Doctor]



Three images of hurricane Irma from the metopA overpass at 1320z today can
be seen at:

http://www.woksat.info/etczi05/zi05-...-hur-irma.html


Bernard Burton

Satellite images and weather data for Wokingham at:
www.woksat.info/wwp.html





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On Tuesday, 5 September 2017 23:29:04 UTC+1, Bernard Burton wrote:
"Graham P Davis" wrote in message
...
Irma is an extremely impressive hurricane in both infrared and
visible satellite images. Experimental GOES-16 one-minute visible
satellite pictures show a distinct 25-30 n mi wide eye with several
mesovortices rotating within with eye. The aircraft have not
sampled the northeastern eyewall where the strongest winds were
measured shortly before 1200 UTC this morning, but the Air Force
plane will be entering the eye in that quadrant momentarily. A peak
SFMR wind of 154 kt was reported, with a few others of 149-150 kt.
Based on these data the initial intensity is set at 155 kt for this
advisory. This makes Irma the strongest hurricane in the Atlantic
basin outside of the Caribbean Sea and Gulf of Mexico in the NHC
records.

The above is a section from this discussion:
http://www.nhc.noaa.gov/text/refresh...l/051446.shtml

See here for forecast tracks etc:
http://www.nhc.noaa.gov/?atlc

--
Graham P Davis, Bracknell, Berks. [Retd meteorologist/programmer]
Web-site: http://www.scarlet-jade.com/
"Like sewage, smartphones, and Donald Trump, some things are just
inevitable." [The Doctor]



Three images of hurricane Irma from the metopA overpass at 1320z today can
be seen at:

http://www.woksat.info/etczi05/zi05-...-hur-irma.html


Bernard Burton

Satellite images and weather data for Wokingham at:
www.woksat.info/wwp.html



Stunning picture - thanks for that. I haven't been able to find anything about its central pressure or whether or not it will deepen.

Tudor Hughes

https://www.wunderground.com/cat6/ex...prclt=676yVB3A

On Tuesday, September 5, 2017 at 6:50:30 PM UTC-4, Tudor Hughes wrote:

Stunning picture - thanks for that. I haven't been able to find anything about its central pressure or whether or not it will deepen.

Tudor Hughes

========

You can keep up to date with the NHC. Information straight from the horse's mouth:

http://www.nhc.noaa.gov/text/refresh.../060235.shtml?

http://www.nhc.noaa.gov/text/refresh.../060236.shtml?

http://www.nhc.noaa.gov/text/refresh.../060234.shtml?


Extracts:


SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION [September 5th/6th]
-----------------------------------------------
LOCATION...17.4N 61.1W
ABOUT 50 MI...80 KM ENE OF ANTIGUA
ABOUT 50 MI...75 KM ESE OF BARBUDA
MAXIMUM SUSTAINED WINDS...185 MPH...295 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 15 MPH...24 KM/H
MINIMUM CENTRAL PRESSURE...916 MB...27.05 INCHES


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 1100 PM AST (0300 UTC), the eye of Hurricane Irma was located
near latitude 17.4 North, longitude 61.1 West. Irma is moving
toward the west-northwest near 15 mph (24 km/h), and this motion is
expected to continue for the next couple of days. On the forecast
track, the extremely dangerous core of Irma will move over portions
of the northern Leeward Islands tonight and early Wednesday, move
near or over portions of the northern Virgin Islands Wednesday, and
pass near or just north of Puerto Rico late Wednesday and Wednesday
night.

Maximum sustained winds remain near 185 mph (295 km/h) with higher
gusts. Irma is a category 5 hurricane on the Saffir-Simpson
Hurricane Wind Scale. Some fluctuations in intensity are likely
during the next day or two, but Irma is forecast to remain a
powerful category 4 or 5 hurricane during the next couple of days.

Hurricane-force winds extend outward up to 50 miles (85 km) from the
center and tropical-storm-force winds extend outward up to 175 miles
(280 km).

The minimum central pressure estimated from Air Force and NOAA
Hurricane Hunter aircraft observations is 916 mb (27.05 inches).



Stephen
Indianapolis IN

Data from Barbuda as the western eye wall moved through reveal wind gusts in excess of 150 mph before dropping falling calm as the eye crossed, while MSLP fell close to 920 hPa.


Stephen
Indianapolis IN

Op woensdag 6 september 2017 15:24:53 UTC+2 schreef :
Data from Barbuda as the western eye wall moved through reveal wind gusts in excess of 150 mph before dropping falling calm as the eye crossed, while MSLP fell close to 920 hPa.

Sint-Maarten https://www.youtube.com/watch?v=UUzmRxRRnHM

Colin Youngs
Brussels

Sint-Maarten https://www.youtube.com/watch?v=UUzmRxRRnHM

Another video of Sint-Maarten https://www.youtube.com/watch?v=WgS2hMZAsek

Webcam on Sint-Maarten blows away https://www.youtube.com/watch?v=dA5qYrboTUE

Colin Youngs
Brussels