STORM MODEWeather tracking workspace

Tropical Depression Etau

30 kt · 35 mph · 991 hPa · NE at 9 kt

Storm Mode · JTWC Warning 16 · 30 Aug 18:00Z

Final advisory · monitoring can continue

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JTWC forecast for Tropical Depression Etau, Warning 16; rendered by MaverickWX

Published advisory track · Warning 16

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JTWC does not publish an NHC cone.

MaverickWX map · Data: JTWC · not an official graphic

Change time or forecast product

Recorded weather · gaps are marked. Coverage begins with recording activation.

Live sources keep independent clocks.

Replay coverage and interpretation

Rolling target: 24 hours; cells: six hours. Radar: NOAA MRMS national overview, 8-minute tolerance. Satellite: original GOES GeoColor day/night picture, hourly sampling, 75-minute tolerance. No interpolation or latest-image fallback. Warning and source checks retain their own clocks. “Recorded by” is collector acquisition evidence, not exact browser publication history.

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Analysis

Area, source times and interpretation

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Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Birmingham, AL (BMX), 12Z. Its levels are in the table below. — Observed Sounding at Birmingham, AL (BMX), for 12:00Z (8 h 1 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (60)

Birmingham, AL (BMX): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
Pressure	Height	Temperature	Dew point	Wind
1006 mb	178 m	9.4	7.2	calm
1000 mb	225 m	13.2	10.7	085° 13 kt
975 mb	439 m	15.4	6.4	—
955 mb	610 m	14.5	4.6	115° 26 kt
940 mb	747 m	13.6	3.6	—
925 mb	882 m	12.6	2.6	105° 21 kt
910 mb	1019 m	12.2	3.2	—
895 mb	1158 m	12.0	1.0	—
865 mb	1442 m	9.2	3.2	—
850 mb	1587 m	9.6	-5.4	100° 14 kt
837 mb	1715 m	9.4	-9.6	—
826 mb	1829 m	9.3	-11.7	090° 6 kt
802 mb	2068 m	8.0	-11.0	—
788 mb	2213 m	9.2	-12.8	—
774 mb	2362 m	8.4	-11.6	—
762 mb	2491 m	8.4	-13.6	—
743 mb	2699 m	8.2	-14.8	—
713 mb	3038 m	6.2	-14.8	—
700 mb	3188 m	5.2	-16.8	015° 16 kt
686 mb	3353 m	4.6	-18.2	015° 12 kt
666 mb	3593 m	3.8	-20.2	—
636 mb	3962 m	2.0	-25.0	025° 15 kt
617 mb	4211 m	0.8	-28.2	—
590 mb	4569 m	-1.5	-19.5	—
579 mb	4718 m	-1.9	-26.9	—
567 mb	4877 m	-3.0	-24.4	355° 19 kt
546 mb	5182 m	-5.1	-19.7	005° 23 kt
525 mb	5486 m	-7.3	-20.3	000° 19 kt
514 mb	5655 m	-6.5	-28.5	—
500 mb	5870 m	-8.3	-26.3	015° 24 kt
486 mb	6096 m	-9.7	-25.9	015° 26 kt
472 mb	6313 m	-10.7	-26.7	—
462 mb	6477 m	-11.9	-26.9	—
448 mb	6706 m	-13.3	-28.5	355° 28 kt
436 mb	6917 m	-14.7	-27.7	—
413 mb	7315 m	-18.2	-28.7	010° 28 kt
400 mb	7560 m	-20.3	-29.3	015° 31 kt
381 mb	7925 m	-23.2	-30.6	020° 36 kt
365 mb	8230 m	-25.6	-33.2	015° 38 kt
344 mb	8657 m	-28.7	-37.7	—
326 mb	9039 m	-31.7	-41.7	—
300 mb	9620 m	-36.5	-45.5	355° 46 kt
289 mb	9878 m	-38.9	-46.9	—
276 mb	10193 m	-40.9	-49.9	—
257 mb	10668 m	-44.9	-53.2	350° 43 kt
250 mb	10860 m	-46.5	-54.5	350° 45 kt
235 mb	11278 m	-50.0	-57.3	355° 42 kt
220 mb	11696 m	-52.7	-58.7	—
209 mb	12027 m	-52.9	-59.9	—
200 mb	12310 m	-54.1	-62.1	345° 24 kt
189 mb	12670 m	-55.3	-63.3	—
175 mb	13157 m	-57.3	-66.3	—
163 mb	13602 m	-59.7	-68.7	—
152 mb	14021 m	-59.8	-68.8	320° 19 kt
150 mb	14120 m	-59.9	-68.9	310° 18 kt
138 mb	14630 m	-63.2	-71.4	300° 25 kt
128 mb	15099 m	-65.5	-73.5	—
115 mb	15747 m	-68.7	-76.7	—
103 mb	16404 m	-70.9	-78.9	—
100 mb	16580 m	-70.3	-79.3	330° 15 kt

Every station with a sounding (77)

SPC observed soundings checked 20:00Z · Data: NOAA/SPC

Storm details

JTWC Warning 16 · 30 Aug 18:00Z

Center position: 31.7°N, 166.8°E
Minimum pressure: 991 hPa
Maximum sustained wind: 30 kt · 35 mph
Movement: NE at 9 kt
Since comparison advisory: Comparison unavailable

Read official warning (JTWC) ↗

Forecast cycle 30 Aug 18:00Z. Center position belongs to the official state’s time, not imagery time. The warning center issued its final advisory; continuing flood/rain monitoring does not imply a new cyclone forecast.

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Advisory comparison

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Data coverage

JTWC has no NHC cone, NHC wind probabilities or NHC civil coastal warnings. Local national services remain the warning authorities.

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No supported U.S. NWS monitoring area for this advisory. This does not mean no warnings worldwide.

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Impacts

No supported U.S. monitoring area

Coastal alertsLocal national warning authorities apply Flooding rainOfficial rainfall context and coverage Storm surgeAvailability and coastal-only product limits Warnings in monitored areaNWS coverage unavailable here; not a global all-clear

Current warnings in the monitoring area

None: JTWC’s forecast track passes within 300 nm of no U.S. territory with NWS zones, Warning 16. Current geographical context; these alerts are not attributed to the cyclone.

No U.S. area

No U.S. territory is in this storm’s area: JTWC’s track passes within 300 nm of none. Its own panels are shown, and no NWS alert is listed.

Official forecast table

Forecast points

JTWC Warning 16 · advisory 30 Aug 18:00Z · forecast cycle 30 Aug 18:00Z. Forecast positions are future estimates, not observed imagery. Classification is shown only where published.

Published official forecast; no interpolated positions or winds
Valid time / lead	Position	Classification	Sustained wind
31 Aug 06:00Z +12 h from forecast cycle	33.7°N, 167.6°E	tropical depression	30 kt · 35 mph
31 Aug 18:00Z +24 h from forecast cycle	36.3°N, 168.0°E	tropical depression	30 kt · 35 mph

Advisory history and records

Advisory history

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Monitoring geography and current changes

Area: None: JTWC’s forecast track passes within 300 nm of no U.S. territory with NWS zones, Warning 16
JTWC issues no cone and no coastal segments, so the area is the territories its track reaches.
Hazards: —
Window: In force now, with this warning’s forecast
Made by: JTWC’s own products, as this site’s pipeline published them, read again with each new warning. Watch another area

The storm’s area, by its warning centre’s products: everything listed is in force in this area, never “from this storm”.

All published products and source descriptions

Forecast track

The official forecast track, drawn by this site from JTWC’s Warning 16 (18:00Z). Not an official JTWC product. Data: JTWC. JTWC’s own.

Intensity forecast

The official intensity forecast, drawn by this site from JTWC’s Warning 16 (18:00Z). Not an official JTWC product. Data: JTWC. JTWC’s own.

Satellite

The storm’s page shows it on the satellite, loaded by your browser.

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Imagery from NASA GIBS: NOAA GOES and JMA Himawari.

Model guidance

The models’ tracks, which are not a forecast for Tropical Depression Etau, JTWC Warning 16

The models’ tracks, which are not a forecast, drawn by this site from JTWC’s Warning 16 (18:00Z). Not an official JTWC product. Data: JTWC. JTWC’s own.

Radar

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Sources

JTWC warning, as published checked 20:00Z
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NWS coverage unavailableTropical Depression Etau · — alerts

No supported NWS monitoring area. Check local warning authorities.

Not checked

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.