Archive | May, 2012

STS Sanvu Morning Update

Severe Tropical Storm Sanvu is now nearing Iwo To, Japan. It was last located approximately 100km southwest of the said island. The storm is holding intensity at 110kph gusting to 160kph (10-min winds from JMA). It is currently moving northeastward at 15kph.

IR Image from NRLMRY

The image above shows the well-established eye of Sanvu nearing the Ogasawara Islands. The thick clouds indicating the eyewall is also moving near or at Iwo To. Latest reports from the airport there indicate heavy rain and strong winds with sustained speeds of around 100kph and occasional gusts of up to 130kph.

We expect conditions here to worsen and stay stormy for the next 12 hours. Rough waves and very strong winds will continue battering the islands into early tomorrow morning (Sunday). There could be as much as 100mm of rain in some places as well. Chichi-Jima, just a couple hundred kilometers north of Iwo To, is still reporting calm conditions but the weather here should deteriorate later today. Gale and High Waves Advisories are up for the Ogasawara Islands.

We’ll have more updates throughout the day as we watch Sanvu pass closely to the islands. Stay safe!

-WxCaster PAT

STS Sanvu Morning Update

Severe Tropical Storm Sanvu continues to move closer to the Ogasawara Islands of Japan. The center was last located approximately 430km southwest of Iwo To, Japan. Maximum 10-min sustained winds are at 95kph with gusts of up to 130kph (130kph gusting to 155kph for JTWC). Sanvu is currently moving northward at around 15kph.

IR Image from NRLMRY


The infra-red image above shows the ragged eye of Sanvu. A microwave image (not shown here) also shows a partially-closed eyewall. The storm continues to exhibit good outflow and strong convective activity, particularly on the northeastern quadrant. Conditions remain favorable and should help Sanvu maintain its present strength, if not intensify a little bit, for at least another 12 to 24 hours.

We expect Sanvu to start turning to the northeast later today as it rounds the Sub-Tropical Ridge. It will pass within 200km of Iwo To, Japan tomorrow morning (Saturday). Then, strong wind shear and marginal sea-surface temperatures should quickly weaken Sanvu. It is forecast to become an extra-tropical storm as early as Sunday.

We’ll have more updates throughout the day so keep checking back to our site. Stay safe!

-WxCaster PAT

03W is now Tropical Storm SANVU

TD 03W has strengthened into a tropical storm as it passes just south of Guam. The JMA has given a name SANVU to this storm. It was last located approximately 120km south of Guam and is moving northwestward at 10kph. Maximum sustained winds are at 65kph with gusts of up to 85kph.

A Flood Advisory has been issued by the National Weather Service in response to the widespread rain showers associated with 03W. For the latest radar image out of Guam, click HERE

IR Image from NRLMRY

The image above shows 03W with its improving circulation. It has consolidated nicely over the past 12 hours despite the moderate windshear in the area. Poleward outflow has also continued to be good and convective activity remains strong as well.

TS 03W will continue to track northwestward before turning to the north tomorrow. It will also strengthen further, with JTWC expecting a typhoon strength by Thursday.

Keep checking back for the latest updates from our numerous contributors. Stay safe!

-WxCaster PAT