Chaba Advisories

[senorpepr]

[Dave C]

I feel SO for those people on Rota. Not only do they have a cat 4 eyewall nailing them but the storm is moving VERY slowly. Even though they are on the south side, the slow movement means very little subtraction of the wind speed.. Flooding also a big deal as well as in Guam.

[Guest]

yea, the rainfall and the wind=not good. Especially since its moving so slow. Hopefully it has a sudden burst of speed and gets on with its track.

[Stormsfury]

Unfortunately, the southern and southeastern eyewall of Chaba sat over the island of Rota for many hours this morning (EDT) and wind max sustained winds of 145 mph, I'm absolutely sure that we're going to hear about a lot of devastation from the island nation of 70,000 people ...

Just now, the eyewall is finally moving away to the NW ...

[senorpepr]

Code: Select all

BULLETIN
TYPHOON CHABA ADVISORY NUMBER 16
NATIONAL WEATHER SERVICE TIYAN GU
2 AM GUAM LST MON AUG 23 2004


DANGEROUS TYPHOON CHABA MOVING AWAY FROM ROTA

A TYPHOON WARNING REMAINS IN EFFECT FOR GUAM..ROTA..TINIAN..SAIPAN
AND AGRIHAN.

RESIDENTS OF THE MARIANA ISLANDS SHOULD CLOSELY MONITOR THE PROGRESS
OF TYPHOON CHABA...AS A SLIGHT CHANGE IN THE TRACK MAY RESULT IN
STRONGER WINDS.

AT 2 AM GUAM LST..16Z..THE CENTER OF TYPHOON CHABA WAS LOCATED BY
RADAR NEAR LATITUDE 14.7 DEGREES NORTH AND LONGITUDE 145.1 DEGREES
EAST. THIS IS ABOUT 90 MILES NORTH-NORTHEAST OF GUAM
                    40 MILES NORTH OF ROTA
                    40 MILES WEST-SOUTHWEST OF TINIAN
                    50 MILES SOUTHWEST OF SAIPAN
                   215 MILES SOUTH-SOUTHWEST OF ALAMAGAN
                   240 MILES SOUTH-SOUTHWEST OF PAGAN
                   285 MILES SOUTH OF AGRIHAN.

TYPHOON CHABA IS MOVING NORTHWEST AT 12 MPH. THIS GENERAL MOTION IS
EXPECTED TO CONTINUE DURING THE NEXT 12 HOURS.

MAXIMUM SUSTAINED WINDS ARE 145 MPH. THIS IS A VERY DANGEROUS
TYPHOON AND IS EXPECTED TO INTENSIFY FURTHER. TYPHOON FORCE WINDS
EXTEND OUTWARD UP TO 60 MILES FROM THE CENTER. TROPICAL STORM FORCE
WINDS EXTEND OUTWARD UP TO 205 MILES FROM THE CENTER.

REPEATING THE 2 AM POSITION...14.7 DEGREES NORTH LATITUDE AND 145.1
DEGREES EAST LONGITUDE MOVING NORTHWEST AT 12 MPH WITH MAXIMUM
SUSTAINED WINDS OF 145 MPH.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA REFER TO TYPHOON CHABA
LOCAL STATEMENT /WTPQ82 PGUM/ AND OTHER PRODUCTS ISSUED BY YOUR
LOCAL WEATHER OFFICE.

INTERMEDIATE ADVISORIES WILL BE ISSUED BY THE NATIONAL WEATHER
SERVICE AT 4 AM AND 6 AM GUAM LST...FOLLOWED BY THE NEXT SCHEDULED
ADVISORY AT 8 AM.

MIDDLEBROOKE

[Derecho]

Remember the Marianas fortunately get hit with such regularity the construction and location of buildings is a lot more apropriate to survive a storm than, say, SW Florida.

[senorpepr]

Remember the Marianas fortunately get hit with such regularity the construction and location of buildings is a lot more apropriate to survive a storm than, say, SW Florida.

Very true... much better construction...

[Brent]

[Guest]

WOW, impressive stuff.

[BL03]

Yikes!!!!

[KatDaddy]

The anemometer must have been damaged or hurricane induced tornado or an associated downburst must have hit the anemometer. Winds were averaging 40-45 G 55-60MPH for hours before the extreme blast of wind occurred.

3 00:54 SE 150 G 173 0.50 Heavy Rain Squalls and Windy SCT004 BKN008 OVC018 75 75 29.14 NA

[senorpepr]

The anemometer must have been damaged or hurricane induced tornado or an associated downburst must have hit the anemometer. Winds were averaging 40-45 G 55-60MPH for hours before the extreme blast of wind occurred.

3 00:54 SE 150 G 173 0.50 Heavy Rain Squalls and Windy SCT004 BKN008 OVC018 75 75 29.14 NA

I think it was a simple encoding error.

Here is the raw METAR ob in question...

Code: Select all

PGSN 221454Z 130130G150KT 1/2SM +RA SQ SCT004 BKN008 OVC018 24/24 A2914 RMK AO2 SLP863 P0035 60163 T02390239 55011 /;

...and the one before it...

Code: Select all

PGSN 221412Z 12030G50KT 1/2SM +RA FEW003 BKN007 OVC011 24/24 A2914 RMK AO2 P0009 /;

It's kinda odd how the sustained winds and gusts both increased by 100 knots...

[SouthernWx]

I just noticed Chaba is now estimated by satellite to be T-7.0, which equates to 140 kts (161 mph...a cat-5 supertyphoon.

Here's the bulletin
http://www.ssd.noaa.gov/PS/TROP/DATA/BU ... urrent.htm

[Matthew5]

It is as strong as Charley

[Anonymous]

As strong and a bigger in size.

[senorpepr]

Official 1800Z Super Typhoon Chaba position:

14.8N 144.8E
155kts (180mph)
879mb (25.96")

[Matthew5]

What doe's this storm rank for the strongest Typhoon? In what was the Pressure on Typhoon Tips?

[Anonymous]

That is the most ragged looking Cat 5 typhoon I have ever seen.

[Aslkahuna]

Typhoon Tip had a MEASURED 870mb. The 879mb for Chaba is an estimate based upon satellite derived winds.

Steve

[lookout]

Its forecast to get to 170KTS with gusts to 205KTS! Absolutely incredible.