STORM MODEWeather tracking workspace

Super Typhoon Champi

140 kt · 161 mph · 919 hPa · NW at 9 kt

Storm Mode · JTWC Warning 21 · 12:00Z

Latest published advisory

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JTWC forecast for Super Typhoon Champi, Warning 21; rendered by MaverickWX

Published advisory track · Warning 21

Observed imagery loads separately from the advisory. The base map is not observed satellite imagery.

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.

Current GLM density, velocity and specialist layers are hidden during replay. Snow uses retained footprint metadata with unverified pixel time. Forecast uses one pinned issuance/run and exact valid time.

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Analysis

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 Great Falls, MT (TFX), 12Z. Its levels are in the table below. — Observed Sounding at Great Falls, MT (TFX), for 12:00Z (6 h 27 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 (42)

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
887 mb	1134 m	4.2	-0.2	330° 3 kt
877 mb	1226 m	8.9	3.6	195° 7 kt
860 mb	1387 m	10.9	2.6	190° 18 kt
850 mb	1483 m	12.0	2.0	200° 21 kt
830 mb	1683 m	13.0	0.0	—
819 mb	1795 m	12.5	-0.5	225° 15 kt
809 mb	1898 m	12.0	-1.0	—
790 mb	2096 m	11.1	-1.9	245° 14 kt
774 mb	2267 m	9.8	-3.2	260° 11 kt
764 mb	2375 m	9.0	-3.8	250° 11 kt
745 mb	2583 m	7.4	-4.6	—
722 mb	2839 m	5.3	-6.2	240° 19 kt
712 mb	2953 m	4.3	-6.9	235° 21 kt
700 mb	3092 m	3.2	-7.8	235° 22 kt
673 mb	3408 m	0.1	-9.0	235° 24 kt
657 mb	3600 m	-0.9	-12.9	235° 21 kt
640 mb	3809 m	-1.9	-17.4	230° 27 kt
628 mb	3959 m	-2.7	-20.7	—
612 mb	4163 m	-3.7	-18.7	—
576 mb	4634 m	-7.5	-18.4	240° 22 kt
543 mb	5093 m	-11.1	-18.1	—
533 mb	5235 m	-12.1	-20.1	—
522 mb	5394 m	-13.3	-20.6	255° 33 kt
509 mb	5585 m	-14.6	-22.9	250° 30 kt
500 mb	5720 m	-15.3	-25.3	245° 31 kt
481 mb	6012 m	-16.7	-32.0	240° 34 kt
469 mb	6203 m	-17.5	-36.5	230° 32 kt
459 mb	6365 m	-18.4	-36.4	235° 32 kt
449 mb	6529 m	-19.3	-37.3	—
425 mb	6937 m	-22.5	-34.5	—
400 mb	7380 m	-26.3	-40.3	235° 35 kt
300 mb	9390 m	-42.5	-49.5	255° 39 kt
98 mb	16504 m	-62.3	-85.3	—
88 mb	17188 m	-60.6	-86.1	265° 40 kt
78 mb	17928 m	-61.5	-88.3	245° 33 kt
65 mb	19049 m	-62.3	-90.4	265° 30 kt
53 mb	20324 m	-58.1	-87.2	310° 19 kt
42 mb	21781 m	-56.9	-86.9	265° 24 kt
32 mb	23494 m	-58.0	-86.8	285° 17 kt
22 mb	25875 m	-52.8	-81.8	305° 5 kt
12 mb	29799 m	-51.3	-78.6	275° 12 kt
9 mb	31761 m	-46.9	-64.9	—

Every station with a sounding (76)

SPC observed soundings checked 18:15Z · Data: NOAA/SPC

Storm details

JTWC Warning 21 · 12:00Z

Center position: 14.8°N, 137.6°E
Minimum pressure: 919 hPa
Maximum sustained wind: 140 kt · 161 mph
Movement: NW at 9 kt
Since comparison advisory: Wind +10 kt · pressure -15 hPa
Compared with Warning 14 · 17 Oct 18:00Z

Read official warning (JTWC) ↗

Forecast cycle 12:00Z. Center position belongs to the official state’s time, not imagery time.

Watched places

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Advisory comparison

Compare with

Show previous forecast as a dashed line

Solid: Warning 21 · 12:00Z
Dashed: Warning 14 · 17 Oct 18:00Z

Compare positions and intensity

Solid: JTWC Warning 21 · 12:00Z
Dashed: JTWC Warning 14 · 17 Oct 18:00Z. Comparison uses each record’s own geometry. A revision is not a landfall or impact prediction.

Current-state revision (two separate official issuances)
Field	Selected issuance	Comparison issuance	Change
Maximum sustained wind	140 kt · 161 mph	130 kt · 150 mph	+10 kt
Minimum pressure	919 hPa	934 hPa	-15 hPa
Center position	14.8°N, 137.6°E	13.1°N, 144.8°E	Different observation times; not a forecast shift

Forecast comparison unavailable: these records have no matching forecast valid times. No interpolation or six-hour step is assumed.

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 21. 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 21 · 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
20 Oct 00:00Z +12 h from forecast cycle	15.9°N, 135.5°E	super typhoon	130 kt · 150 mph
20 Oct 12:00Z +24 h from forecast cycle	17.0°N, 133.0°E	super typhoon	145 kt · 167 mph
21 Oct 00:00Z +36 h from forecast cycle	18.1°N, 130.5°E	super typhoon	140 kt · 161 mph
21 Oct 12:00Z +48 h from forecast cycle	19.3°N, 128.5°E	super typhoon	130 kt · 150 mph
22 Oct 00:00Z +60 h from forecast cycle	20.3°N, 126.9°E	typhoon	120 kt · 138 mph
22 Oct 12:00Z +72 h from forecast cycle	21.1°N, 125.7°E	typhoon	110 kt · 127 mph
23 Oct 12:00Z +96 h from forecast cycle	23.8°N, 123.7°E	typhoon	95 kt · 109 mph
24 Oct 12:00Z +120 h from forecast cycle	27.6°N, 123.4°E	typhoon	70 kt · 81 mph

Advisory history and records

Advisory history

Return to latest advisory

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 · Selected
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

Monitoring geography and current changes

Area: None: JTWC’s forecast track passes within 300 nm of no U.S. territory with NWS zones, Warning 21
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 21 (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 21 (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 3° from the storm's meridian.

Open the storm’s page

Imagery from NASA GIBS: NOAA GOES and JMA Himawari.

Model guidance

The models’ tracks, which are not a forecast for Super Typhoon Champi, JTWC Warning 21

The models’ tracks, which are not a forecast, drawn by this site from JTWC’s Warning 21 (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 18:25Z
Radar live tiles, no last-good copy

NWS coverage unavailableSuper Typhoon Champi · — 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.