Tropical Depression Twentynine

30 kt · 35 mph · 1003 hPa · N at 9 kt

Storm Mode · JTWC Warning 1 · 14 Oct 12:00Z

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JTWC forecast for Tropical Depression Twentynine, Warning 1; rendered by MaverickWX

Published advisory track · Warning 1

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MaverickWX map · Data: JTWC · not an official graphic

Change time or forecast product

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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 and model context

Current cached context, independently dated. Regional reference: MP; a reference within a wider monitoring area does not replace the complete warning geography. 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 Grand Junction, CO (GJT), 00Z. Its levels are in the table below. — Observed Sounding at Grand Junction, CO (GJT), for 00:00Z (14 h 30 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 (50)

Grand Junction, CO (GJT): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
Pressure	Height	Temperature	Dew point	Wind
857 mb	1475 m	15.6	2.6	300° 6 kt
850 mb	1543 m	14.0	2.0	310° 12 kt
836 mb	1683 m	13.0	2.0	—
822 mb	1825 m	12.4	-0.6	—
798 mb	2072 m	10.4	-1.6	—
769 mb	2379 m	9.0	-4.0	—
754 mb	2542 m	7.6	-3.4	—
736 mb	2743 m	6.5	-8.1	305° 12 kt
721 mb	2909 m	5.8	-10.2	—
709 mb	3048 m	4.8	-8.9	195° 6 kt
700 mb	3150 m	4.0	-8.0	195° 5 kt
683 mb	3353 m	2.4	-7.2	200° 7 kt
660 mb	3626 m	0.8	-11.2	—
633 mb	3962 m	-1.9	-8.7	155° 13 kt
617 mb	4164 m	-1.5	-3.8	—
586 mb	4572 m	-4.0	-5.8	160° 9 kt
569 mb	4806 m	-5.7	-7.2	—
531 mb	5346 m	-9.1	-10.0	—
500 mb	5810 m	-11.5	-12.9	200° 9 kt
482 mb	6096 m	-13.3	-15.2	205° 9 kt
470 mb	6281 m	-14.5	-16.4	—
444 mb	6706 m	-17.5	-18.9	240° 6 kt
432 mb	6913 m	-18.9	-20.1	—
409 mb	7315 m	-21.9	-23.4	230° 4 kt
400 mb	7480 m	-23.1	-24.8	225° 7 kt
388 mb	7703 m	-24.5	-26.2	—
376 mb	7925 m	-26.3	-27.9	220° 8 kt
366 mb	8125 m	-27.9	-30.0	—
351 mb	8424 m	-30.1	-31.9	—
337 mb	8713 m	-32.5	-34.3	—
317 mb	9144 m	-36.4	-39.4	225° 11 kt
303 mb	9449 m	-39.1	-41.6	210° 10 kt
300 mb	9520 m	-39.7	-42.1	210° 14 kt
290 mb	9754 m	-41.7	-44.3	210° 14 kt
277 mb	10058 m	-44.5	-46.9	235° 10 kt
265 mb	10363 m	-44.2	-47.2	230° 11 kt
253 mb	10668 m	-43.2	-47.5	260° 27 kt
250 mb	10750 m	-43.5	-48.0	255° 31 kt
231 mb	11278 m	-45.4	-52.0	255° 38 kt
201 mb	12192 m	-49.0	-58.8	255° 59 kt
200 mb	12230 m	-49.1	-59.1	260° 59 kt
186 mb	12698 m	-51.3	-62.9	260° 64 kt
175 mb	13106 m	-53.3	-66.1	255° 60 kt
159 mb	13716 m	-56.1	-71.0	260° 62 kt
150 mb	14080 m	-57.9	-73.9	260° 59 kt
138 mb	14601 m	-61.1	-78.1	—
127 mb	15116 m	-61.7	-80.7	—
114 mb	15778 m	-65.5	-85.5	—
103 mb	16392 m	-67.1	-88.1	—
100 mb	16570 m	-67.3	-88.3	265° 30 kt

Every station with a sounding (76)

SPC observed soundings checked 14:30Z · Data: NOAA/SPC

Storm details

JTWC Warning 1 · 14 Oct 12:00Z

Center position: 9.6°N, 161.2°E
Minimum pressure: 1003 hPa
Maximum sustained wind: 30 kt · 35 mph
Movement: N at 9 kt
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Forecast cycle 14 Oct 12:00Z. Center position belongs to the official state’s time, not imagery time.

Watched places

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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.

Lightning activity — GOES GLM

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Cached lightning source details and text readings

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Potential impacts and monitoring context

Current NWS monitoring states: GU, MP

Coastal alertsNot retained with this historical record Flooding rainOfficial rainfall context and coverage Storm surgeAvailability and coastal-only product limits Nearby severe warnings0 severe/flash-flood warnings in the named monitoring area · source current

Current warnings in the monitoring area

U.S. territories JTWC’s forecast track passes within 300 nm of, Warning 1: Guam and Northern Mariana Islands. Current geographical context; these alerts are not attributed to the cyclone and are not part of the historical advisory.

In force in this area

No warning, watch or advisory for these hazards is in force in this area.

NWS’s alerts checked 14:30Z: a successful check, so this is none in force, not “can’t tell”.

Official forecast table

Official forecast positions and intensity

JTWC Warning 1 · advisory 14 Oct 12:00Z · forecast cycle 14 Oct 12:00Z. 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
15 Oct 00:00Z +12 h from forecast cycle	10.5°N, 160.2°E	tropical depression	30 kt · 35 mph
15 Oct 12:00Z +24 h from forecast cycle	11.2°N, 158.2°E	tropical storm	35 kt · 40 mph
16 Oct 00:00Z +36 h from forecast cycle	11.6°N, 155.5°E	tropical storm	40 kt · 46 mph
16 Oct 12:00Z +48 h from forecast cycle	12.1°N, 152.7°E	tropical storm	50 kt · 58 mph
17 Oct 00:00Z +60 h from forecast cycle	12.6°N, 149.9°E	typhoon	65 kt · 75 mph
17 Oct 12:00Z +72 h from forecast cycle	13.2°N, 147.2°E	typhoon	80 kt · 92 mph
18 Oct 12:00Z +96 h from forecast cycle	14.4°N, 142.1°E	typhoon	110 kt · 127 mph
12:00Z +120 h from forecast cycle	16.1°N, 137.4°E	typhoon	125 kt · 144 mph

Advisory history and records

Retained advisory records

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Each entry selects one immutable snapshot. Intermediate, special and corrected records are separate identities where retained. 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.

Advisory history; retained records only
Official issuance	Revision kind	Record
JTWC Warning 21 · 12:00Z	advisory	Snapshot 34544bc3
JTWC Warning 20 · 06:00Z	advisory	Snapshot 7c7a42d9
JTWC Warning 19 · 00:00Z	advisory	Snapshot df4ad817
JTWC Warning 18 · 18 Oct 18:00Z	advisory	Snapshot fee9f0ca
JTWC Warning 17 · 18 Oct 12:00Z	advisory	Snapshot ded1ea58
JTWC Warning 16 · 18 Oct 06:00Z	advisory	Snapshot 610609f3
JTWC Warning 15 · 18 Oct 00:00Z	advisory	Snapshot 8da30f44
JTWC Warning 14 · 17 Oct 18:00Z	advisory	Snapshot 066b411c
JTWC Warning 13 · 17 Oct 12:00Z	advisory	Snapshot 7b6b7d88
JTWC Warning 12 · 17 Oct 06:00Z	advisory	Snapshot adcb8e93
JTWC Warning 11 · 17 Oct 00:00Z	advisory	Snapshot 0bf22ebc
JTWC Warning 10 · 16 Oct 18:00Z	advisory	Snapshot eea89e7f
JTWC Warning 8 · 16 Oct 06:00Z	advisory	Snapshot ff92eaa6
JTWC Warning 7 · 16 Oct 00:00Z	advisory	Snapshot 9d193cf4
JTWC Warning 6 · 15 Oct 18:00Z	advisory	Snapshot 4d09f045
JTWC Warning 5 · 15 Oct 12:00Z	advisory	Snapshot 7447d924
JTWC Warning 4 · 15 Oct 06:00Z	advisory	Snapshot 2d609133
JTWC Warning 3 · 15 Oct 00:00Z	advisory	Snapshot d96ff9c8
JTWC Warning 2 · 14 Oct 18:00Z	advisory	Snapshot d99cea2d
JTWC Warning 1 · 14 Oct 12:00Z	first	Snapshot 99aef0d4 · Selected

Monitoring geography and current changes

Area: U.S. territories JTWC’s forecast track passes within 300 nm of, Warning 1: Guam and Northern Mariana Islands (NWS states: GU, MP)
JTWC issues no cone and no coastal segments, so the area is the territories its track reaches.
Hazards: Tornado, severe thunderstorm, flash flood, river flood, areal flood, coastal flood, tropical and other warnings, watches and advisories, and the forecasts for them
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”.

Map

This map draws the contiguous United States, and Guam and Northern Mariana Islands are beyond it. What is in force there is listed under “In force in this area”.

What changed, last 60 minutes

since 14:29Z, when this server began watching this area

Nothing has changed since 14:29Z.

The products’ own words and times, and what is no longer in force since the last read. Never written by AI.

All published products and source descriptions

Forecast track

The official forecast track, drawn by this site from JTWC’s Warning 1 (12:00Z). Not an official JTWC product. Data: JTWC. JTWC’s own.

Intensity forecast

The official intensity forecast, drawn by this site from JTWC’s Warning 1 (12:00Z). 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 Twentynine, JTWC Warning 1

The models’ tracks, which are not a forecast, drawn by this site from JTWC’s Warning 1 (12:00Z). Not an official JTWC product. Data: JTWC. JTWC’s own.

SPC Day 1 outlook

General Thunderstorms Risk
Marginal Risk

SPC’s Day 1 categorical outlook, valid 13:00Z to 20 Oct 12:00Z, issued 12:00Z. SPC’s categories, as drawn. Data: NOAA/SPC.

Watches

No tornado or severe thunderstorm watch in force in this area.

SPC’s watches, by number, matched by the counties they list. Data: NOAA/SPC.

Mesoscale discussions

No mesoscale discussion reaches this area.

SPC’s mesoscale discussions whose outline reaches the area. Data: NOAA/SPC.

Storm ingredients

SPC’s hourly mesoanalysis, observed soundings and model guidance for the area, on the Analysis tab with its own clocks.

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Drawn by the Analysis tab’s own renderer. Data: NOAA/SPC, NOAA/NCEP.

Flash-flood risk, Day 1

Marginal

WPC’s excessive rainfall outlook, 12:00Z to 20 Oct 12:00Z, issued 07:50Z: a chance of flash flooding, in four categories. Data: NOAA/WPC.

River gauges in flood

No river, coastal or lake gauge in this area is in flood, observed or forecast.

NWS’s gauges at flood stage or above in the area, worst first, each with its forecast hydrograph on Rain & rivers. Data: NOAA/NWPS.

Rain expected and rain that fell

WPC’s rain forecast and MRMS’s radar estimate of the rain that fell, on the Briefing’s map for the area.

Open Rain & rivers

Data: NOAA/WPC, NOAA/NSSL MRMS.

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 14:30Z
NWS warnings and SPC watches checked 14:30Z
NWS watches and advisories checked 14:30Z
SPC mesoscale discussions checked 14:30Z
SPC Day 1 outlook checked 14:30Z
WPC excessive rainfall checked 14:30Z
NWPS river gauges checked 14:25Z
Radar live tiles, no last-good copy

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.