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

Current cached context, independently dated. Regional products keep their published footprint; they are not clipped or attributed to one storm. This section remains separate from the historical replay cursor and official cyclone forecast. Use Forecast to pin a retained model package.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Slidell, LA (LIX), 12Z. Its levels are in the table below. — Observed Sounding at Slidell, LA (LIX), 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 (56)

Slidell, LA (LIX): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
Pressure	Height	Temperature	Dew point	Wind
1023 mb	10 m	8.8	8.2	calm
1007 mb	145 m	20.0	10.0	—
1000 mb	206 m	21.2	6.2	105° 22 kt
989 mb	305 m	20.4	6.8	105° 20 kt
954 mb	610 m	17.9	9.0	115° 13 kt
926 mb	866 m	16.4	2.4	—
925 mb	875 m	16.2	2.2	115° 10 kt
896 mb	1145 m	13.6	3.6	—
881 mb	1287 m	12.6	0.6	—
861 mb	1479 m	11.4	-3.6	—
850 mb	1586 m	11.2	-9.8	075° 5 kt
826 mb	1829 m	10.4	-15.8	335° 1 kt
814 mb	1946 m	10.0	-16.0	—
801 mb	2079 m	8.8	-15.2	—
785 mb	2246 m	7.2	-8.8	—
774 mb	2362 m	9.8	-35.2	—
762 mb	2492 m	10.6	-36.4	—
739 mb	2743 m	9.3	-31.7	035° 14 kt
713 mb	3041 m	7.8	-26.2	—
703 mb	3158 m	9.0	-33.0	—
700 mb	3193 m	8.8	-34.2	030° 18 kt
686 mb	3353 m	7.9	-36.2	030° 21 kt
661 mb	3658 m	6.2	-40.1	045° 19 kt
642 mb	3901 m	4.8	-43.2	—
614 mb	4267 m	2.2	-43.1	015° 14 kt
591 mb	4569 m	0.0	-43.0	—
569 mb	4877 m	-1.1	-48.0	000° 14 kt
540 mb	5286 m	-3.9	-19.9	—
526 mb	5486 m	-4.7	-22.5	035° 20 kt
512 mb	5704 m	-5.1	-29.1	—
500 mb	5890 m	-6.1	-30.1	000° 22 kt
488 mb	6079 m	-7.3	-34.3	—
468 mb	6401 m	-10.0	-34.9	000° 14 kt
432 mb	7010 m	-15.1	-36.1	025° 19 kt
400 mb	7590 m	-18.7	-38.7	020° 30 kt
366 mb	8244 m	-24.1	-45.1	—
350 mb	8568 m	-27.1	-41.1	—
323 mb	9144 m	-31.4	-51.7	000° 34 kt
309 mb	9449 m	-34.1	-49.2	350° 36 kt
300 mb	9660 m	-35.9	-46.9	355° 35 kt
264 mb	10535 m	-43.9	-51.9	—
254 mb	10794 m	-45.3	-58.3	—
250 mb	10900 m	-45.7	-57.7	000° 43 kt
236 mb	11278 m	-48.8	-59.2	000° 44 kt
225 mb	11582 m	-51.3	-62.1	010° 39 kt
211 mb	12007 m	-53.5	-65.5	—
200 mb	12350 m	-54.9	-68.9	335° 31 kt
186 mb	12802 m	-55.8	-74.6	345° 30 kt
171 mb	13347 m	-58.9	-76.9	—
159 mb	13805 m	-58.7	-80.7	—
150 mb	14170 m	-60.5	-80.5	320° 25 kt
139 mb	14630 m	-63.6	-82.5	325° 23 kt
126 mb	15240 m	-66.8	-85.7	305° 17 kt
115 mb	15784 m	-69.7	-86.7	—
103 mb	16459 m	-71.8	-86.2	295° 12 kt
100 mb	16610 m	-72.3	-86.3	310° 23 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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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.

Lightning activity — GOES GLM

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Map layers, imagery opacity and source clocks

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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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The issuance history could not be read. This is not an absence of previous advisories. Current NWS context is labelled separately. Historical impact manifests are not retained by this index; newer impacts are never attached to an earlier advisory. Same-time corrections replaced in the publisher’s index cannot be selected unless still listed.

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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

NOAA’s radar for the area, loaded by your browser as on the Radar page.

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Live tiles; the radar keeps no last-good copy.

Sources

JTWC warning, as published checked 20:00Z
Radar live tiles, no last-good copy

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.