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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

The area of disturbed weather that has been located for several days east of Hurricane Gil became the eighth tropical depression of the season yesterday, and has just strengthened into Tropical Storm Henriette, with winds reaching 35kts. The invest began to organise as Gil weakened and became less influential on this system. A fairly small but deep area of convection is persisting near the LLCC and there is some signs of banding in the southern quadrant, something the cyclone has lacked until now. Conditions seem favourable for the next few days for Henriette to strengthen, but NHC are being conservative with the intensity forecast as Gil moved through this same area a few days ago and weakened despite the low shear and warm sea temps. If Henriette behaves differently, it could become a hurricane prior to reaching cooler water in a few days time.

 

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Posted
  • Location: Leeds/Bradford border, 185 metres above sea level, around 600 feet
  • Location: Leeds/Bradford border, 185 metres above sea level, around 600 feet

Interesting to see the dynamics between the two, as soon as Gil hit even the slightest turbulence its almost as if the shielded Henriette just took its energy.

 

Forming so far west the devil in me kind of wants this to stay south of 15N, if it does so then Hawaii could come into play and at stronger strength than last weeks crapfest.

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Posted
  • Location: Eastbourne, East Sussex (work in Mid Sussex)
  • Location: Eastbourne, East Sussex (work in Mid Sussex)

 

Far out in the Pacific, Gil has weakened to a tropical depression while another system strengthened to a tropical storm. The National Hurricane Center in Miami says Sunday that the depression is about 1,280 miles (2,060 kilometers) east-southeast of Hilo, Hawaii. It has maximum sustained winds of 35 mph (55 kph) and is moving west-southwest. 
 
Meanwhile, Tropical Storm Henriette has formed in the Pacific. It is about 1,335 miles (2150 kilometers) west-southwest of the southern tip of Baja California, Mexico. It has maximum sustained winds of 45 mph (75 kph) and is moving west. Forecasters expect it to gradually strengthen over the next few days.

 

 

http://abcnews.go.com/International/wireStory/tropical-storm-henriette-forms-pacific-19867321

 

 

Tropical Storm HENRIETTE: Probability of tropical storm winds to 117 hours lead

 

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Posted
  • Location: Leeds/Bradford border, 185 metres above sea level, around 600 feet
  • Location: Leeds/Bradford border, 185 metres above sea level, around 600 feet

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Not bad if its still alive.

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Henriette has strengthened through the day and sustained winds are now at 50kts. Some deep convection remains over the LLCC, with some good banding features. Henriette is expected to become a hurricane, but will it be the first TC of the 2013 season to actually surpass cat 1 status? We've had 5 cat 1 hurricanes and 2 tropical storms, so somethings got to give soon and a major hurricane occurs. Henriette has a shot in my opinion, as the environment ahead is very favourable, with low shear and warm sea temps.

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Posted
  • Location: Eastbourne, East Sussex (work in Mid Sussex)
  • Location: Eastbourne, East Sussex (work in Mid Sussex)

 

Tropical storm Henriette discussion and 48-hour outlook
 
At about 5:00 pm., the center of Tropical Storm Henriette was located near latitude 13.5 north, longitude 130.0 west. Henriette is moving toward the northwest near 12 mph and this general motion is expected during the next day or so with a turn toward the west-northwest forecast on Wednesday.
 
Maximum sustained winds have increased to near 70 mph with higher gusts. Henriette is expected to become a hurricane on Tuesday.
 
Tropical storm force winds extend outward up to 80 miles from the center.
 
The estimated minimum central pressure is 995 MB/29.38 inches.
 
Summary of 5:00 pm information
 
Location: 13.5n 130.0w
About 1750 mi east-southeast Hilo, Hawaii
Maximum sustained winds: 70 mph
Present movement: northwest or 305 degrees at 12 mph
Minimum central pressure: 995 MB/29.38 inches

 

 

http://www.khon2.com/2013/08/05/gil-maintaining-its-intensity-henriette-almost-a-hurricane/

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Henriette has intensified further and has become the season's sixth category 1 hurricane, with winds at 65kts. The hurricane has a well developed central dense overcast with very cold cloud tops. An eye has appeared from time to time on satellite imagery. Henriette has another 24 hours or so to strengthen as it heads northwestwards towards a weakeness in the ridging to the north. After that, Henriette is expected to turn back west as the ridge restrengthens and weaken slowly due to entering a drier and more stable airmass and cooler sea surface temperatures.

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Posted
  • Location: Leeds/Bradford border, 185 metres above sea level, around 600 feet
  • Location: Leeds/Bradford border, 185 metres above sea level, around 600 feet

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Henriette has continued to strengthen, and winds are now at 80kts. The hurricane has developed a small eye, now visible on satellite imagery. Over the next 12 hours, Henriette could strengthen some more before cooler waters and drier air induce weakening.

post-1820-0-99982000-1375823120_thumb.jp

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Posted
  • Location: Eastbourne, East Sussex (work in Mid Sussex)
  • Location: Eastbourne, East Sussex (work in Mid Sussex)

 

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Henriette strengthens to Category 1 hurricane, strongest storm of year

 

Hurricane Henriette became the strongest storm of the 2013 U.S. hurricane season after winds swelled to 90 mph on Tuesday morning as it barreled through the Pacific Ocean, said the National Oceanic and Atmospheric Administration. Henriette's winds are expected to reach 100 mph as the hurricane makes its way northwest toward Hawaii, said Chris Vaccaro, the director of public affairs at the National Oceanic and Atmospheric Administration.

 

While Henriette will increase to a Category 2 hurricane, Vaccaro said forecasts show the storm will weaken to a tropical depression before passing south of Hawaii over the weekend.  The storm is currently centered about 1,545 miles east of Hawaii but, “at this time, we do not anticipate Henriette making a landfall,†said NOAA meteorologist Dennis Feltgen. The Pacific has seen eight named storms in 2013 — four of which have advanced to hurricanes — while the Atlantic has experienced four tropical storms, said Vaccaro. “The eastern Pacific basin tends to be more active than the Atlantic†during hurricane season, he said.
 
However, the NOAA has predicted that hurricane activity in the Atlantic is predicted to be above average this year. The eastern Pacific hurricane season began on May 8, while the Atlantic season began June 1. Feltgen said that the peak of the season is yet to come for both regions. He said the heaviest hurricane activity usually occurs between mid-August and late October. Hurricane season wraps up in the Atlantic and the Pacific on Nov. 1, he said.

 

 

 

http://usnews.nbcnews.com/_news/2013/08/06/19899066-henriette-strengthens-to-category-1-hurricane-strongest-storm-of-year?lite

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

The article is wrong about there being only 4 hurricanes, 6 out of the 8 named storms have reached cat 1 hurrjcane strength. What is surprising as there have been no Major's (cat 3 and above), and I think Henriette will fall short aswell, especially as some unexpected shear has weakened Henriette to 75kts from the 80kts it was last night

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Taken from Unisys, look at the summary so far. I can't recall a season starting with so many hurricanes which all failed to surpass cat 1 intensity. Doesn't mean a lot but an oddity all the same.

  Wind  Category

1 Tropical Storm ALVIN 15-17 MAY   45   -  

2 Hurricane-1 BARBARA 28-30 MAY 65   1  

3 Hurricane-1 COSME 23-27 JUN   75   1  

4 Hurricane-1 DALILA 30 JUN-07 JUL 65 1  

5 Hurricane-1 ERICK 04-09 JUL 70   1  

6 Tropical Storm FLOSSIE 25-30 JUL 60         -  

7 Hurricane-1 GIL 30 JUL-07 AUG   75         1  

8 Hurricane-1 HENRIETTE 03-07 AUG 80 1

Edited by Somerset Squall
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Posted
  • Location: Eastbourne, East Sussex (work in Mid Sussex)
  • Location: Eastbourne, East Sussex (work in Mid Sussex)

Henriette going out with a whimper too?

 

Hurricane Henriette (hen-ree-EHT') is expected to weaken as it moves across the Pacific, far from land. The hurricane's maximum sustained winds late Wednesday remained near 85 mph (140 kph). The U.S. National Hurricane Center in Miami says additional weakening is forecast by Thursday as Henriette moves over cooler waters. Henriette is centered about 1,235 miles (1987 kilometers) east of Hilo, Hawaii, and is moving west-northwest near 10 mph (17 kph).

 

http://abcnews.go.com/US/wireStory/hurricane-henriette-expected-weaken-pacific-19899475

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Mmm, surprisingly not Coast. Henriette has unexpectedly strengthened today and is now a cat 2 hurricane with winds of 85kts. At last, something stronger than a cat 1! Henriette has shrunk considerably and has a tiny central dense overcast with a pinhole eye. Henriette is moving over cooler waters so weakening should recommence soon.

 

Look how tiny Henriette is! Reminds me of a stronger version of the also tiny Hurricane Dalila earlier in the season.

 

 

post-1820-0-92692100-1375984844_thumb.jp

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Henriette has strengthened some more, and now has sustained winds of 90kts. The central dense overcast remains tiny, with a very well defined eye. Henriette has probably just about peaked, and the tiny hurricane should weaken tomorrow as it moves over progressively cooler water on the westward track.

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Posted
  • Location: Eastbourne, East Sussex (work in Mid Sussex)
  • Location: Eastbourne, East Sussex (work in Mid Sussex)

 

Hurricane Henriette, churning across the Pacific as a Category 2 storm, was spotted by NASA's Tropical Rainfall Measuring Mission (TRMM) satellite on Aug. 6, with thunderstorms whose tops extended 10 miles (16 kilometers) up in the atmosphere.
 
Posted Image
 
Henriette first formed as a tropical depression in the Eastern Pacific on Aug. 3, just behind Tropical Storm Gil. As Gil faded, Henriette strengthened into a tropical storm, then a hurricane. While it has reached Category 2 status, it is expected to weaken soon, according to the latest forecasts from the National Hurricane Center in Miami.
 
The hurricane's 10-mile-high thunderstorm clouds aren't unexpected for a strong storm — the stronger the storm, the higher its clouds reach in the atmosphere. These high clouds tend to be the ones that drop the most rainfall during a storm. TRMM measured the rainfall rate from thunderstorms near Henriette's center to be about 2.2 inches (5.5 centimeters) per hour.
 
The TRMM team at NASA's Goddard Space Flight Center in Greenbelt, Md., used the data the satellite took to create 3D images of the storm that clearly show the tall thunderclouds, which are known as "hot towers," because of the intense latent heat released by the storms as water condenses in them.
 
Henriette isn't expected to be a threat to land, as it is far out at sea, about 1,100 miles (1,780 kilometers) east of Hilo, Hawaii, and moving westward. While the Eastern Pacific has seen much storm activity over the last few weeks, the Atlantic basin has been quiet. The busiest part of the Atlantic hurricane season is typically mid-August through September. The next storm to form in the Atlantic will be named Erin.

 

 

http://news.yahoo.com/hurricane-henriette-features-10-mile-high-thunderstorms-160654043.html

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Posted
  • Location: Eastbourne, East Sussex (work in Mid Sussex)
  • Location: Eastbourne, East Sussex (work in Mid Sussex)

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Posted
  • Location: Leeds/Bradford border, 185 metres above sea level, around 600 feet
  • Location: Leeds/Bradford border, 185 metres above sea level, around 600 feet

Now in the central Pacific and weakening.

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Yep, on the decline now, shear and dry air doing it's thing. Winds are down to 60kts now, so Henriette has lost hurricane status. Henriette has pushed west-southwestwards today, and even though it is moving back over warm water as a result, the upper level environment is still expected to continue Henriette's weakening trend.

 

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Henriette has steadily weakened to 45kts. The storm lost much of it's convection last night but regained it this morning, and has managed to keep a small, persistant area of convection over the LLCC. Henriette continues to moves west-southwestwards in a region of dry air but warming sea temps. Shear is expected to increase in a day or two, hastening weakening, but until then, weakening will be slow as warm waters should continue to fuel some convection.

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Convection had completely dissipated this morning in association with Henriette, but it has since made a comeback. However, the cyclone is definitely weaker than this time yesterday, and has been downgraded to a 30kt tropical depression. It is difficult to say just how much longer Henriette will cling to tropical depression status. In it's favour, waters are warm. Against it, shear is moderate. Even though the shear is not at a level that would destroy a large tropical cyclone, Henriette is so small that this will probably be enough to kill it over the next day or so. There remains a chance, especially if shear eases, that Henriette could survive longer than a couple days, a lot will be told by if Henriette can hang on to this recent burst of convection. Henriette is currently directly south of Hawaii, and will continue to head westwards.

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Posted
  • Location: Eastbourne, East Sussex (work in Mid Sussex)
  • Location: Eastbourne, East Sussex (work in Mid Sussex)

Tropical Depression HENRIETTE: Probability of Cat 1 or above winds to 36 hours lead

 

 

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Posted
  • Location: Taunton, Somerset
  • Weather Preferences: Snow, thunder, strong winds
  • Location: Taunton, Somerset

Henriette has degenerated into a remnant low. Even though shear is easing and waters are warm, ex-Henriette is probably too weak to regenerate.

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