WPAC: SINLAKU - Typhoon

[mrbagyo]

PGSN 140210Z AUTO 03055G78KT 1/4SM +RA FG OVC012 26/25 A2876 RMK AO2 PK WND 02081/0159 PRESFR P0015 T02560250 TSNO $

Pressure is down to 974 hPa
Sustained wind is up to 55 knots gusting to 78 knots

[ljmac75]

Gusted to 100 mph earlier, core is still a ways away

[mrbagyo]

Davis Vantage AWS on top of a hill in Saipan is rockin 100+ mph gust



Ambient AWS near the airport is also registering 100 mph gust

[mrbagyo]

That anemometer is done

[cycloneye]

That anemometer is done

https://s13.gifyu.com/images/bqlXn.png

And the web cam is also out. https://www.earthcam.com/world/northern ... cam=saipan

[Hayabusa]

Looks like the inner eye is shrinking and the outer eye is taking over

[mrbagyo]

All wind reading has stopped - all of them (Ambient AWS in airport, METAR, and Davis AWS north of Capitol Hill)

Pressure is down to 947 in Saipan airport

[cycloneye]

 https://x.com/iCyclone/status/2043996824193716614

[mrbagyo]

pressure in Saipan Airport is down to 940 hPa.

[mrbagyo]

PGSN 141154Z AUTO 06071G113KT 1/2SM -RA FG VV003 26/26 RMK AO2 PK WND 050113/1151 RAB01RAEMMB40RAEMMB53 SLPNO P0026 60273 70532 T02560256 10261 20256 TSNO $

latest METAR has no pressure data but the wind data resumed
71 knots sustained gusting to 113 knots.

The obviously mis calibrated Davis Vantage AWS which appears consistently off by about 12.7 hPa compared to Ambient data near the airport is now registering a pressure of 945.82 hPa - so actual pressure must be in the low 930s now and dropping fast like a brick

[cycloneye]

125 kt.

04W SINLAKU 260414 1200 14.9N 145.8E WPAC 125 930

[mrbagyo]

125 kt.

04W SINLAKU 260414 1200 14.9N 145.8E WPAC 125 930

This is absolutely deeper than 930 - Davis AWS near Capitol hill is already in 937.69 hPa and still dropping (gotta subtract at least 12 hPa)

[cycloneye]

BULLETIN - EAS ACTIVATION REQUESTED
Extreme Wind Warning
National Weather Service Tiyan GU
916 PM ChST Tue Apr 14 2026

The National Weather Service in Tiyan Guam has issued a

* Extreme Wind Warning for...
Saipan
Tinian

* Until 1215 AM ChST.

* At 916 PM ChST, Andersen AFB Doppler radar indicated western edge
of the eyewall of Super Typhoon Sinlaku is moving into Tinian and
just south of Saipan. Winds up to 150 mph are possible. Sinlaku`s
forward speed is around 3 hour motion to the northwest, estimated
by radar. This slow motion means destructive winds in excess of
115 mph will be prolonged once they arrive and may extend further
into the overnight hours as the eye passes near or over Tinian and
Saipan. THIS IS AN EXTREMELY DANGEROUS AND LIFE-THREATENING
SITUATION!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Widespread destructive winds in excess of 115 mph are expected.

TAKE COVER NOW! Move immediately to an interior room in your
shelter. Take action now to protect your life!

The safest place to be during this situation is in a reinforced
interior room away from windows. Put as many walls between yourself
and the outside as possible. Remain in shelter through the passage
of these life-threatening conditions.

Do not venture out into the relative calm of the eye if it pass over
you. Extremely dangerous winds will soon return on the back side of
Super Typhoon Sinlaku.

[cycloneye]

Eye over Saipan and Tianan.

[Sciencerocks]

 https://x.com/IPTCWC/status/2044054347651142105

[ljmac75]

125 kt.

04W SINLAKU 260414 1200 14.9N 145.8E WPAC 125 930

This is absolutely deeper than 930 - Davis AWS near Capitol hill is already in 937.69 hPa and still dropping (gotta subtract at least 12 hPa)

Looks like JMA went with 920 for the 12z analysis. What do you think?

[Sciencerocks]

[mrbagyo]

125 kt.

04W SINLAKU 260414 1200 14.9N 145.8E WPAC 125 930

This is absolutely deeper than 930 - Davis AWS near Capitol hill is already in 937.69 hPa and still dropping (gotta subtract at least 12 hPa)

Looks like JMA went with 920 for the 12z analysis. What do you think?

Must be between 910 and 920 at landfalls.
That Davis Vantage Pro 2 needs a visit to a pressure chamber for testing.

[gib]

This is absolutely deeper than 930 - Davis AWS near Capitol hill is already in 937.69 hPa and still dropping (gotta subtract at least 12 hPa)

Looks like JMA went with 920 for the 12z analysis. What do you think?

Must be between 910 and 920 at landfalls.
That Davis Vantage Pro 2 needs a visit to a pressure chamber for testing.

That weather station you kindly linked was at 927.9 10 minutes ago. It's now at 930.2. May have bottomed out. Subtracting ~12 would put it at 915-918!

[mrbagyo]

That 12 hPa is probably even conservative.
It needs a pressure chamber test at several pressure points to test the accuracy.