STORM MODEWeather tracking workspace

Tropical Depression Narra

25 kt · 29 mph · NE at 8 kt

Storm Mode · JTWC Warning · 25 Aug 18:00Z

Final advisory · monitoring can continue

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JTWC forecast for Tropical Depression Narra, 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

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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 Riverton, WY (RIW), 00Z. Its levels are in the table below. — Observed Sounding at Riverton, WY (RIW), for 00:00Z (4 h 51 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 (49)

Riverton, WY (RIW): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
Pressure	Height	Temperature	Dew point	Wind
835 mb	1703 m	6.4	-1.6	050° 3 kt
822 mb	1829 m	4.8	-3.6	145° 2 kt
791 mb	2134 m	1.8	-4.4	165° 1 kt
762 mb	2438 m	-1.2	-5.2	130° 1 kt
746 mb	2609 m	-2.9	-5.6	—
734 mb	2743 m	-1.6	-6.0	340° 1 kt
714 mb	2958 m	0.4	-6.6	—
700 mb	3116 m	0.2	-7.8	170° 7 kt
680 mb	3353 m	-1.6	-12.3	215° 8 kt
667 mb	3501 m	-2.5	-13.5	—
654 mb	3658 m	-1.8	-14.2	200° 11 kt
630 mb	3954 m	-3.3	-8.1	—
605 mb	4267 m	-5.4	-18.9	215° 23 kt
582 mb	4572 m	-7.5	-29.4	220° 14 kt
560 mb	4877 m	-9.2	-30.6	240° 13 kt
546 mb	5070 m	-10.3	-31.3	—
517 mb	5486 m	-13.8	-29.8	225° 13 kt
500 mb	5740 m	-15.7	-30.7	215° 18 kt
486 mb	5953 m	-17.5	-34.5	—
469 mb	6218 m	-19.5	-34.5	—
458 mb	6401 m	-20.5	-36.6	210° 21 kt
439 mb	6706 m	-22.9	-34.1	235° 17 kt
421 mb	7010 m	-25.3	-31.5	225° 23 kt
407 mb	7255 m	-26.9	-31.2	—
400 mb	7380 m	-27.1	-33.1	230° 30 kt
387 mb	7620 m	-29.2	-35.0	225° 33 kt
370 mb	7925 m	-31.8	-37.0	225° 39 kt
343 mb	8466 m	-36.3	-40.6	—
325 mb	8839 m	-39.4	-43.4	215° 53 kt
314 mb	9072 m	-41.3	-45.2	—
301 mb	9358 m	-43.5	-47.0	—
300 mb	9380 m	-43.7	-47.1	205° 61 kt
288 mb	9652 m	-45.9	-49.5	—
273 mb	10005 m	-48.3	-51.0	—
258 mb	10363 m	-49.8	-54.5	220° 72 kt
250 mb	10580 m	-50.7	-56.7	215° 82 kt
235 mb	10973 m	-53.2	-60.6	215° 83 kt
224 mb	11278 m	-55.0	-62.1	225° 70 kt
214 mb	11582 m	-54.8	-62.8	220° 55 kt
200 mb	12020 m	-55.1	-64.1	215° 50 kt
186 mb	12497 m	-57.6	-66.6	215° 53 kt
175 mb	12865 m	-56.9	-66.9	—
162 mb	13353 m	-56.7	-68.7	—
150 mb	13840 m	-57.3	-71.3	220° 53 kt
139 mb	14321 m	-57.7	-72.7	—
126 mb	14935 m	-57.5	-74.5	215° 47 kt
115 mb	15516 m	-58.7	-77.7	—
104 mb	16145 m	-60.1	-80.1	—
100 mb	16390 m	-59.9	-81.9	245° 40 kt

Every station with a sounding (77)

SPC observed soundings checked 04:45Z · Data: NOAA/SPC

Storm details

JTWC Warning · 25 Aug 18:00Z

Center position: 20.0°N, 109.6°E
Minimum pressure: Not reported
Maximum sustained wind: 25 kt · 29 mph
Movement: NE at 8 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. 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.

Geographic context: Natural Earth boundaries and representative place labels. Radar coverage is limited offshore. Satellite pixels keep their source palette and actual observation time. Missing imagery is not clear weather.

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 18:00Z · 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
26 Aug 06:00Z +12 h from forecast cycle	20.9°N, 110.3°E	tropical depression	20 kt · 23 mph
26 Aug 18:00Z +24 h from forecast cycle	21.9°N, 110.6°E	tropical depression	15 kt · 17 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
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 (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 (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 Narra, JTWC Warning

The models’ tracks, which are not a forecast, drawn by this site from JTWC’s Warning (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 04:51Z
Radar live tiles, no last-good copy

NWS coverage unavailableTropical Depression Narra · — 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.