STORM MODEWeather tracking workspace

Tropical Storm Cempaka

Tropical Storm 52 mph (45 kt) · 999 hPa · NW at 18 mph (16 kt)

JTWC Warning 5 · 7 Nov 06:00Z

Historical advisory selected · current imagery and impacts are not attached

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.

Intensity forecast

The official intensity forecast, drawn by this site from JTWC’s Warning 5 (06:00Z). Not an official JTWC product. Data: JTWC. JTWC’s own.

Impacts

No supported U.S. monitoring area

Coastal alertsNot retained with this historical record 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 5 · advisory 7 Nov 06:00Z · forecast cycle 7 Nov 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
7 Nov 18:00Z +12 h from forecast cycle	21.2°N, 140.1°E	Tropical storm	69 mph (60 kt)
06:00Z +24 h from forecast cycle	22.2°N, 137.3°E	Typhoon	86 mph (75 kt)
18:00Z +36 h from forecast cycle	23.0°N, 135.3°E	Typhoon	104 mph (90 kt)
9 Nov 06:00Z +48 h from forecast cycle	23.8°N, 134.7°E	Typhoon	115 mph (100 kt)
9 Nov 18:00Z +60 h from forecast cycle	24.4°N, 135.9°E	Typhoon	109 mph (95 kt)
10 Nov 06:00Z +72 h from forecast cycle	25.1°N, 138.6°E	Typhoon	98 mph (85 kt)
11 Nov 06:00Z +96 h from forecast cycle	27.2°N, 145.4°E	Tropical storm	63 mph (55 kt)
12 Nov 06:00Z +120 h from forecast cycle	28.0°N, 150.4°E	Tropical storm	40 mph (35 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 10 · 12:00Z	advisory	Snapshot d2af0300
JTWC Warning 9 · 06:00Z	advisory	Snapshot d9150cf8
JTWC Warning 8 · 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 · Selected
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 5
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 5 (06:00Z). Not an official JTWC product. Data: JTWC. JTWC’s own.

Satellite

The storm’s page shows it on the satellite, loaded by your browser.

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 Tropical Storm Cempaka, JTWC Warning 5

The models’ tracks, which are not a forecast, drawn by this site from JTWC’s Warning 5 (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.

JTWC forecast for Tropical Storm Cempaka, Warning 5; rendered by MaverickWX

Published advisory track · Warning 5

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.

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 5 · 7 Nov 06:00Z

Center position: 20.0°N, 142.8°E
Minimum pressure: 999 hPa
Maximum sustained wind: 52 mph (45 kt)
Movement: NW at 18 mph (16 kt)
Since the advisory compared: Wind +10 kt · pressure -5 hPa
Compared with Warning 4 · 7 Nov 00:00Z

Read official warning (JTWC) ↗

Forecast cycle 7 Nov 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

Show previous forecast as a dashed line

Solid: Warning 5 · 7 Nov 06:00Z
Dashed: Warning 4 · 7 Nov 00:00Z

Compare positions and intensity

Solid: JTWC Warning 5 · 7 Nov 06:00Z
Dashed: JTWC Warning 4 · 7 Nov 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	52 mph (45 kt)	40 mph (35 kt)	+10 kt
Minimum pressure	999 hPa	1004 hPa	-5 hPa
Center position	20.0°N, 142.8°E	19.0°N, 144.2°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 5. Current geographical context; these alerts are not attributed to the cyclone and are not part of the historical advisory.

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 18:17Z
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 coverageTropical Storm Cempaka

Check local warning authorities.

18:19Z