STORM MODEWeather tracking workspace

Tropical Depression Thirty

30 kt · 35 mph · 1004 hPa · NW at 1 kt

Storm Mode · JTWC Warning 1 · 12:00Z

Latest published advisory

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

Published advisory track · Warning 1

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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 Great Falls, MT (TFX), 12Z. Its levels are in the table below. — Observed Sounding at Great Falls, MT (TFX), for 12:00Z (4 h 43 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 (45)

Great Falls, MT (TFX): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
Pressure	Height	Temperature	Dew point	Wind
876 mb	1134 m	9.6	6.1	015° 5 kt
860 mb	1289 m	15.8	8.8	—
850 mb	1389 m	15.6	7.6	175° 10 kt
838 mb	1510 m	16.2	7.2	—
823 mb	1663 m	15.4	5.4	—
807 mb	1829 m	14.2	4.9	225° 5 kt
778 mb	2134 m	11.9	4.0	240° 8 kt
750 mb	2438 m	9.6	3.0	230° 9 kt
738 mb	2577 m	8.6	2.6	—
723 mb	2743 m	7.7	1.0	210° 11 kt
700 mb	3013 m	5.8	-0.2	215° 11 kt
671 mb	3353 m	2.7	-2.3	195° 7 kt
646 mb	3658 m	0.1	-3.7	165° 11 kt
622 mb	3962 m	-2.4	-5.1	140° 13 kt
598 mb	4267 m	-5.0	-6.5	165° 11 kt
564 mb	4732 m	-7.3	-8.6	—
554 mb	4877 m	-8.1	-9.3	160° 19 kt
538 mb	5098 m	-9.5	-10.9	—
511 mb	5486 m	-11.3	-12.7	175° 19 kt
500 mb	5660 m	-12.3	-13.4	170° 21 kt
472 mb	6096 m	-16.9	-19.5	175° 29 kt
453 mb	6401 m	-19.4	-21.9	170° 25 kt
436 mb	6688 m	-21.3	-23.3	—
417 mb	7010 m	-23.1	-25.4	175° 36 kt
400 mb	7315 m	-24.9	-27.4	180° 32 kt
400 mb	7320 m	-24.9	-27.4	175° 34 kt
384 mb	7620 m	-27.3	-30.4	160° 32 kt
370 mb	7882 m	-29.3	-33.0	—
337 mb	8534 m	-34.9	-38.1	145° 33 kt
323 mb	8839 m	-37.5	-40.4	150° 36 kt
310 mb	9117 m	-39.9	-42.6	—
300 mb	9340 m	-42.1	-44.8	160° 35 kt
282 mb	9754 m	-45.8	-48.3	180° 30 kt
269 mb	10058 m	-48.6	-51.1	180° 35 kt
257 mb	10363 m	-51.4	-54.1	190° 32 kt
250 mb	10550 m	-52.9	-55.6	190° 37 kt
236 mb	10918 m	-54.9	-57.9	205° 60 kt
224 mb	11251 m	-53.2	-57.4	205° 88 kt
213 mb	11574 m	-51.3	-57.3	—
200 mb	11980 m	-52.3	-59.3	225° 50 kt
185 mb	12497 m	-54.7	-63.0	205° 41 kt
164 mb	13250 m	-54.1	-65.1	—
152 mb	13716 m	-55.5	-68.1	200° 61 kt
150 mb	13820 m	-55.9	-68.9	200° 56 kt
141 mb	14215 m	-54.7	—	—

Every station with a sounding (78)

SPC observed soundings checked 16:30Z · Data: NOAA/SPC

Storm details

JTWC Warning 1 · 12:00Z

Center position: 10.9°N, 166.2°E
Minimum pressure: 1004 hPa
Maximum sustained wind: 30 kt · 35 mph
Movement: NW at 1 kt
Since comparison advisory: Comparison unavailable

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Forecast cycle 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.

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

Lightning activity — GOES GLM

Total lightning, including in-cloud activity. Not ground-strike locations or a safe-to-go-outside signal.

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Cached lightning source details and text readings

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 1. 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 1 · advisory 12:00Z · forecast cycle 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
24 Oct 00:00Z +12 h from forecast cycle	10.9°N, 166.5°E	tropical storm	40 kt · 46 mph
24 Oct 12:00Z +24 h from forecast cycle	11.2°N, 166.3°E	tropical storm	50 kt · 58 mph
25 Oct 00:00Z +36 h from forecast cycle	12.0°N, 166.0°E	typhoon	65 kt · 75 mph
25 Oct 12:00Z +48 h from forecast cycle	13.1°N, 165.4°E	typhoon	80 kt · 92 mph
26 Oct 00:00Z +60 h from forecast cycle	14.1°N, 165.2°E	typhoon	90 kt · 104 mph
26 Oct 12:00Z +72 h from forecast cycle	14.8°N, 165.3°E	typhoon	100 kt · 115 mph
27 Oct 12:00Z +96 h from forecast cycle	15.2°N, 165.1°E	typhoon	100 kt · 115 mph
28 Oct 12:00Z +120 h from forecast cycle	15.5°N, 161.7°E	typhoon	120 kt · 138 mph

Advisory history and records

Advisory history

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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 1 · 12:00Z	first	Snapshot 82a249e4 · Selected

Monitoring geography and current changes

Area: None: JTWC’s forecast track passes within 300 nm of no U.S. territory with NWS zones, Warning 1
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 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 NASA GIBS (NOAA GOES, JMA Himawari)’s imagery, loaded by your browser. Himawari at 26° from the storm's meridian.

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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 Thirty, 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.

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 16:42Z
Radar live tiles, no last-good copy

NWS coverage unavailableTropical Depression Thirty · — 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.