STORM MODEWeather tracking workspace

Tropical Depression Atsani

25 kt · 29 mph · NNW at 16 kt

Storm Mode · JTWC Warning · 25 Aug 06:00Z

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JTWC forecast for Tropical Depression Atsani, Warning; rendered by MaverickWX

Published advisory track · Warning

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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 Oakland, CA (OAK), 12Z. Its levels are in the table below. — Observed Sounding at Oakland, CA (OAK), for 12:00Z (9 h 34 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)

Oakland, CA (OAK): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
Pressure	Height	Temperature	Dew point	Wind
1017 mb	3 m	9.2	8.1	125° 3 kt
1005 mb	103 m	14.2	10.3	—
1000 mb	145 m	14.4	11.2	300° 2 kt
983 mb	290 m	15.8	3.8	—
973 mb	377 m	15.0	1.0	—
947 mb	610 m	14.3	-1.7	020° 14 kt
925 mb	804 m	13.0	-2.0	025° 20 kt
913 mb	914 m	12.3	-2.0	025° 26 kt
891 mb	1117 m	11.6	-1.4	—
880 mb	1219 m	11.3	-3.1	025° 20 kt
850 mb	1510 m	10.0	-4.0	000° 14 kt
837 mb	1638 m	11.4	-4.6	—
818 mb	1829 m	10.8	-5.8	000° 12 kt
803 mb	1984 m	9.8	-6.2	—
789 mb	2134 m	8.6	-10.4	010° 13 kt
754 mb	2504 m	10.4	-38.6	—
732 mb	2743 m	8.5	-33.7	015° 27 kt
706 mb	3048 m	6.0	-27.6	015° 30 kt
700 mb	3116 m	5.6	-26.4	010° 29 kt
681 mb	3340 m	4.2	-30.8	—
655 mb	3658 m	3.3	-39.0	020° 21 kt
631 mb	3962 m	0.9	-37.6	030° 23 kt
607 mb	4267 m	-1.8	-34.7	025° 24 kt
582 mb	4600 m	-3.5	-33.5	—
563 mb	4862 m	-5.5	-30.5	—
545 mb	5116 m	-7.1	-33.1	—
505 mb	5704 m	-12.3	-31.3	—
500 mb	5780 m	-12.9	-32.9	010° 36 kt
480 mb	6096 m	-14.6	-39.2	010° 39 kt
467 mb	6297 m	-15.5	-43.5	—
442 mb	6706 m	-19.2	-44.4	355° 37 kt
400 mb	7440 m	-25.9	-45.9	355° 41 kt
384 mb	7734 m	-28.7	-42.7	—
358 mb	8230 m	-33.0	-46.2	000° 51 kt
318 mb	9054 m	-39.3	-57.3	—
303 mb	9383 m	-41.9	-59.9	—
300 mb	9450 m	-42.7	-59.7	000° 39 kt
278 mb	9958 m	-47.3	-57.3	—
267 mb	10223 m	-49.7	-58.7	—
253 mb	10573 m	-51.3	-64.3	—
250 mb	10650 m	-51.9	-63.9	345° 52 kt
240 mb	10913 m	-54.1	-64.1	—
226 mb	11299 m	-55.3	-66.3	—
211 mb	11739 m	-54.5	-68.5	—
200 mb	12080 m	-56.7	-70.7	320° 46 kt
162 mb	13411 m	-56.5	-81.2	305° 46 kt
150 mb	13910 m	-57.5	-82.5	310° 40 kt
134 mb	14620 m	-56.5	-84.5	—
121 mb	15240 m	-60.9	-84.8	305° 19 kt
105 mb	16154 m	-62.8	-85.4	275° 34 kt
100 mb	16430 m	-62.5	-85.5	275° 29 kt
89 mb	17152 m	-62.4	-86.3	275° 11 kt
79 mb	17884 m	-64.0	-87.7	325° 10 kt
67 mb	18874 m	-59.9	-87.9	—
56 mb	20017 m	-61.2	-88.4	255° 10 kt
45 mb	21373 m	-61.9	-89.1	calm
35 mb	22933 m	-60.9	-88.5	010° 10 kt
25 mb	25035 m	-57.9	-88.1	350° 10 kt
14 mb	28601 m	-54.5	-86.5	—
9 mb	31878 m	-45.1	-81.1	—

Every station with a sounding (77)

SPC observed soundings checked 21:30Z · Data: NOAA/SPC

Storm details

JTWC Warning · 25 Aug 06:00Z

Center position: 20.6°N, 137.3°E
Minimum pressure: Not reported
Maximum sustained wind: 25 kt · 29 mph
Movement: NNW at 16 kt
Since comparison advisory: Comparison unavailable

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Forecast cycle Time not published. Center position belongs to the official state’s time, not imagery time.

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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.

Lightning activity — GOES GLM

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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. 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 · advisory 25 Aug 06:00Z · forecast cycle Time not published. 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
25 Aug 18:00Z +12 h from forecast cycle	22.4°N, 136.0°E	tropical depression	20 kt · 23 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
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 (06:00Z). Not an official JTWC product. Data: JTWC. JTWC’s own.

Intensity forecast

The official intensity forecast, drawn by this site from JTWC’s Warning (06:00Z). Not an official JTWC product. Data: JTWC. JTWC’s own.

Satellite

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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 Atsani, JTWC Warning

The models’ tracks, which are not a forecast, drawn by this site from JTWC’s Warning (06:00Z). 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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Sources

JTWC warning, as published checked 21:34Z
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NWS coverage unavailableTropical Depression Atsani · — 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.