STORM MODEWeather tracking workspace

Typhoon Cempaka

Typhoon 75 mph (65 kt) · ENE at 38 mph (33 kt)

JTWC Warning 21 · 06:00Z

Latest advisory

Scripting is off: reload for updates. Advisory selection, comparison, forecast tables and every published product remain available. Watched places stay on your device and need scripting to be read.

JTWC forecast for Typhoon Cempaka, 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.

ⓘ About this map

JTWC does not publish an NHC cone.

Basemap

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.

No observed replay frame displayed.

Open the complete replay reader (works without scripting or WebGL)

Choose Forecast for a pinned issuance and valid time.

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 Grand Junction, CO (GJT), 00Z. Its levels are in the table below. — Observed Sounding at Grand Junction, CO (GJT), for 00:00Z (10 h 21 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 (55)

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
859 mb	1475 m	15.2	4.2	290° 3 kt
850 mb	1563 m	13.2	4.2	315° 7 kt
839 mb	1672 m	12.2	4.2	—
826 mb	1803 m	11.8	3.0	305° 9 kt
811 mb	1956 m	10.7	1.7	320° 8 kt
797 mb	2101 m	10.7	0.7	305° 7 kt
780 mb	2280 m	9.4	0.4	—
769 mb	2398 m	9.0	-1.9	355° 4 kt
757 mb	2528 m	8.6	-4.4	—
734 mb	2780 m	6.4	-5.0	040° 8 kt
714 mb	3006 m	4.4	-5.6	055° 9 kt
703 mb	3133 m	3.3	-5.9	035° 11 kt
700 mb	3168 m	3.0	-6.0	035° 12 kt
673 mb	3484 m	0.1	-7.3	015° 13 kt
663 mb	3604 m	-0.8	-9.0	020° 12 kt
642 mb	3860 m	-1.8	-15.4	005° 11 kt
624 mb	4085 m	-2.8	-21.0	000° 13 kt
610 mb	4266 m	-3.5	-25.5	—
596 mb	4448 m	-5.0	-27.8	000° 22 kt
586 mb	4581 m	-5.5	-30.5	—
571 mb	4784 m	-5.1	-32.0	005° 20 kt
549 mb	5088 m	-7.4	-32.7	010° 24 kt
517 mb	5552 m	-11.1	-33.6	005° 22 kt
502 mb	5779 m	-12.9	-34.0	005° 26 kt
500 mb	5810 m	-13.1	-34.1	005° 26 kt
485 mb	6042 m	-15.0	-36.0	355° 25 kt
471 mb	6264 m	-16.9	-37.9	005° 19 kt
457 mb	6490 m	-18.9	-38.9	355° 23 kt
436 mb	6836 m	-21.9	-40.8	350° 18 kt
411 mb	7270 m	-25.6	-43.2	325° 23 kt
400 mb	7470 m	-27.3	-44.3	335° 22 kt
387 mb	7705 m	-29.3	-45.6	335° 25 kt
376 mb	7910 m	-31.0	-46.7	330° 21 kt
365 mb	8121 m	-32.8	-47.9	325° 20 kt
354 mb	8334 m	-34.5	-48.6	300° 21 kt
343 mb	8551 m	-36.2	-48.4	295° 24 kt
328 mb	8858 m	-38.6	-48.1	275° 27 kt
315 mb	9135 m	-40.8	-47.8	280° 34 kt
300 mb	9470 m	-43.5	-47.5	275° 35 kt
280 mb	9929 m	-46.9	-50.2	265° 43 kt
266 mb	10267 m	-49.3	-52.6	—
255 mb	10541 m	-51.2	-54.6	260° 49 kt
250 mb	10670 m	-52.1	-55.5	260° 52 kt
237 mb	11013 m	-54.9	-58.2	260° 52 kt
222 mb	11427 m	-57.9	-60.6	260° 57 kt
211 mb	11746 m	-59.7	-63.0	—
200 mb	12080 m	-60.3	-63.5	270° 54 kt
186 mb	12532 m	-60.9	-65.8	275° 46 kt
174 mb	12947 m	-61.1	-67.2	280° 52 kt
163 mb	13353 m	-60.9	-68.7	290° 45 kt
150 mb	13870 m	-60.1	-70.1	300° 44 kt
136 mb	14479 m	-61.3	-72.3	300° 37 kt
123 mb	15095 m	-62.9	-75.8	305° 41 kt
109 mb	15837 m	-64.9	-79.9	300° 40 kt
100 mb	16360 m	-66.5	-82.5	315° 36 kt

Every station with a sounding (76)

SPC observed soundings checked 10:15Z · Data: NOAA/SPC

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

Official forecast table

Forecast points

JTWC Warning 21 · advisory 06:00Z · forecast cycle 06:00Z. 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
18:00Z +12 h from forecast cycle	31.2°N, 157.0°E	Tropical storm	63 mph (55 kt)
12 Nov 06:00Z +24 h from forecast cycle	33.6°N, 164.2°E	Tropical storm	52 mph (45 kt)

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 · 06:00Z	advisory	Snapshot bb754e3a · Selected
JTWC Warning 20 · 00:00Z	advisory	Snapshot a34c26ab
JTWC Warning 19 · 10 Nov 18:00Z	advisory	Snapshot e7808ce0
JTWC Warning 18 · 10 Nov 12:00Z	advisory	Snapshot b515c9cc
JTWC Warning 17 · 10 Nov 06:00Z	advisory	Snapshot 17571fa4
JTWC Warning 16 · 10 Nov 00:00Z	advisory	Snapshot 5d7e3d7e
JTWC Warning 15 · 9 Nov 18:00Z	advisory	Snapshot c752b70f
JTWC Warning 14 · 9 Nov 12:00Z	advisory	Snapshot 311990a5
JTWC Warning 13 · 9 Nov 06:00Z	advisory	Snapshot 07c0ce17
JTWC Warning 12 · 9 Nov 00:00Z	advisory	Snapshot 5bfaa1fd
JTWC Warning 11 · 8 Nov 18:00Z	advisory	Snapshot 2246b2a9
JTWC Warning 10 · 8 Nov 12:00Z	advisory	Snapshot d2af0300
JTWC Warning 9 · 8 Nov 06:00Z	advisory	Snapshot d9150cf8
JTWC Warning 8 · 8 Nov 00:00Z	advisory	Snapshot 70a99d6f
JTWC Warning 7 · 7 Nov 18:00Z	advisory	Snapshot 8017732a
JTWC Warning 6 · 7 Nov 12:00Z	advisory	Snapshot 1d3d7ebb
JTWC Warning 5 · 7 Nov 06:00Z	advisory	Snapshot 70f8e842
JTWC Warning 4 · 7 Nov 00:00Z	advisory	Snapshot f9baa0bb
JTWC Warning 3 · 6 Nov 18:00Z	advisory	Snapshot dd0679d9
JTWC Warning 2 · 6 Nov 12:00Z	advisory	Snapshot 6bf2dbf6
JTWC Warning 1 · 6 Nov 06:00Z	first	Snapshot 858bb03c

Monitoring geography

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 (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 21 (06:00Z). 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 10° 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 Typhoon Cempaka, JTWC Warning 21

The models’ tracks, which are not a forecast, drawn by this site from JTWC’s Warning 21 (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.

Open the radar

Drawn live: if the radar fails, nothing older is shown in its place.

My places

Add a place

Saved places are read from this device after scripting starts.

Search for a place

Search stays in this browser. A town point is not an address; no address-level surge is calculated.

Details

JTWC Warning 21 · 06:00Z

Center position: 29.1°N, 150.2°E
Minimum pressure: Not reported
Maximum sustained wind: 75 mph (65 kt)
Movement: ENE at 38 mph (33 kt)
Since the advisory compared: Wind -5 kt · pressure Not comparable
Compared with Warning 20 · 00:00Z

Read official warning (JTWC) ↗

Forecast cycle 06:00Z. Center position belongs to the official state’s time, not imagery time.

Map layers

Lightning activity — GOES GLM

Public event region Aggregation interval Show density on map

Cached lightning observations have not loaded. An empty map is not zero lightning.

Coverage and interpretation

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

Cached lightning source details and text readings

Interactive layer controls load on this device. Published products remain available below.

Advisory comparison

Compare with

Show previous forecast as a dashed line

Solid: Warning 21 · 06:00Z
Dashed: Warning 20 · 00:00Z

Compare positions and intensity

Solid: JTWC Warning 21 · 06:00Z
Dashed: JTWC Warning 20 · 00:00Z. 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	75 mph (65 kt)	81 mph (70 kt)	-5 kt
Minimum pressure	Not reported	Not reported	Not comparable
Center position	29.1°N, 150.2°E	27.7°N, 146.7°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.

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.

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.

Sources

JTWC warning, as published checked 10:19Z
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.

Outside NWS coverageTyphoon Cempaka

Check local warning authorities.

10:21Z