Forecast track
The official forecast track, drawn by this site from JTWC’s Warning 21 (). Not an official JTWC product. Data: JTWC. JTWC’s own.
STORM MODEWeather tracking workspace
Typhoon Cempaka
Current advisory context · Typhoon 75 mph (65 kt) · ENE at 38 mph (33 kt)
JTWC Warning 21 ·
Latest advisory
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
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
Choose product
Tropical
TrackImpactsModel guidanceAdvisory historyCurrent weather
ReportsAnalysisSatelliteRadarObservations
Coastal observationsNo product matches. Try a hazard or source name.
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
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 (61)
| Pressure | Height | Temperature | Dew point | Wind |
|---|---|---|---|---|
| 1009 mb | 20 m | 8.6 | 6.1 | calm |
| 1000 mb | 95 m | 13.8 | 8.8 | 240° 15 kt |
| 976 mb | 300 m | 14.1 | 4.3 | 260° 24 kt |
| 942 mb | 597 m | 11.5 | 2.8 | 275° 30 kt |
| 932 mb | 687 m | 10.8 | 2.4 | 275° 31 kt |
| 925 mb | 750 m | 10.2 | 2.2 | 280° 31 kt |
| 896 mb | 1014 m | 8.2 | 1.2 | 285° 29 kt |
| 884 mb | 1125 m | 7.2 | 0.2 | — |
| 850 mb | 1446 m | 4.6 | -3.4 | 300° 35 kt |
| 837 mb | 1571 m | 3.6 | -4.4 | — |
| 816 mb | 1777 m | 2.0 | -6.0 | — |
| 794 mb | 1997 m | 3.0 | -16.0 | — |
| 784 mb | 2099 m | 2.4 | -17.6 | 305° 37 kt |
| 774 mb | 2202 m | 1.9 | -19.1 | 305° 37 kt |
| 733 mb | 2639 m | -0.6 | -25.8 | 300° 42 kt |
| 723 mb | 2749 m | -1.1 | -27.4 | 305° 40 kt |
| 704 mb | 2961 m | -1.4 | -29.9 | 300° 45 kt |
| 700 mb | 3006 m | -1.5 | -30.5 | 300° 46 kt |
| 639 mb | 3728 m | -4.8 | -34.1 | 300° 58 kt |
| 626 mb | 3890 m | -5.7 | -33.7 | — |
| 614 mb | 4041 m | -6.8 | -34.8 | 290° 55 kt |
| 602 mb | 4195 m | -7.8 | -35.8 | 290° 56 kt |
| 573 mb | 4572 m | -10.8 | -36.8 | 285° 56 kt |
| 556 mb | 4802 m | -12.6 | -37.3 | 285° 58 kt |
| 531 mb | 5152 m | -15.4 | -38.1 | 290° 65 kt |
| 516 mb | 5370 m | -17.2 | -38.6 | 285° 67 kt |
| 500 mb | 5610 m | -19.1 | -39.1 | 285° 67 kt |
| 485 mb | 5834 m | -21.0 | -38.0 | 285° 65 kt |
| 470 mb | 6065 m | -23.0 | -36.8 | 285° 69 kt |
| 455 mb | 6300 m | -24.9 | -37.5 | 280° 68 kt |
| 442 mb | 6508 m | -26.7 | -38.4 | 275° 69 kt |
| 414 mb | 6977 m | -30.4 | -41.3 | 280° 71 kt |
| 400 mb | 7220 m | -31.7 | -45.7 | 280° 73 kt |
| 380 mb | 7582 m | -34.2 | -50.1 | 280° 78 kt |
| 366 mb | 7844 m | -36.1 | -52.1 | — |
| 344 mb | 8269 m | -39.1 | -53.6 | 280° 95 kt |
| 331 mb | 8532 m | -41.0 | -55.0 | 280° 93 kt |
| 312 mb | 8935 m | -43.8 | -57.0 | 275° 103 kt |
| 300 mb | 9200 m | -44.1 | -56.1 | 275° 116 kt |
| 275 mb | 9783 m | -45.9 | -57.9 | 275° 125 kt |
| 263 mb | 10078 m | -48.3 | -60.3 | — |
| 253 mb | 10332 m | -50.3 | -61.3 | — |
| 250 mb | 10410 m | -50.7 | -62.7 | 275° 122 kt |
| 223 mb | 11144 m | -55.5 | -65.5 | 275° 126 kt |
| 208 mb | 11584 m | -58.0 | -68.0 | 280° 125 kt |
| 200 mb | 11830 m | -58.9 | -68.9 | 280° 123 kt |
| 190 mb | 12150 m | -60.3 | -69.3 | — |
| 165 mb | 13032 m | -58.9 | -70.9 | — |
| 155 mb | 13424 m | -58.7 | -71.7 | 280° 91 kt |
| 150 mb | 13630 m | -58.3 | -72.3 | 280° 91 kt |
| 137 mb | 14199 m | -59.2 | -75.7 | 285° 84 kt |
| 115 mb | 15292 m | -62.1 | -81.1 | 280° 70 kt |
| 104 mb | 15916 m | -60.5 | -81.5 | — |
| 100 mb | 16160 m | -60.5 | -82.5 | 290° 49 kt |
| 89 mb | 16897 m | -61.9 | -85.9 | — |
| 67 mb | 18593 m | -63.4 | -90.4 | 285° 27 kt |
| 56 mb | 19701 m | -62.7 | -90.7 | — |
| 45 mb | 21031 m | -60.3 | -89.3 | 275° 35 kt |
| 35 mb | 22577 m | -64.3 | -91.3 | — |
| 15 mb | 28042 m | -49.6 | -81.6 | 270° 59 kt |
| 9 mb | 31275 m | -46.1 | -68.1 | — |
Every station with a sounding (76)
- Aberdeen, SD (ABR)
- ADN
- Albany, NY (ALB)
- Albuquerque, NM (ABQ)
- Amarillo, TX (AMA)
- Birmingham, AL (BMX)
- Bismarck, ND (BIS)
- Blacksburg, VA (RNK)
- Boise, ID (BOI)
- Brownsville, TX (BRO)
- Buffalo, NY (BUF)
- Cape Canaveral, FL (XMR)
- Caribou, ME (CAR)
- Chanhassen, MN (MPX)
- Charleston, SC (CHS)
- Chihuahua, Mexico (76225)
- Corpus Christi, TX (CRP)
- Davenport, IA (DVN)
- Del Rio, TX (DRT)
- Dodge City, KS (DDC)
- Elko, NV (LKN)
- Flagstaff, AZ (FGZ)
- Fort Worth, TX (FWD)
- Gaylord, MI (APX)
- Glasgow, MT (GGW)
- Grand Junction, CO (GJT)
- Gray, ME (GYX)
- GRB
- Great Falls, MT (TFX)
- Greensboro, NC (GSO)
- International Falls, MN (INL)
- Jackson, MS (JAN)
- Jacksonville, FL (JAX)
- Key West, FL (KEY)
- La Paz, Mexico (76405)
- Lake Charles, LA (LCH)
- Lamont, OK (LMN)
- Las Vegas, NV (VEF)
- Lincoln, IL (ILX)
- Little Rock, AR (LZK)
- Maniwaki, Quebec (WMW)
- Mazatlán, Mexico (76458)
- Medford, OR (MFR)
- Miami, FL (MFL)
- Midland, TX (MAF)
- Nashville, TN (BNA)
- Newport, NC (MHX)
- Norman, OK (OUN)
- North Platte, NE (LBF)
- Oakland, CA (OAK)
- OYU
- Peachtree City, GA (FFC)
- Pickle Lake, Ontario (WPL)
- Pittsburgh, PA (PIT)
- Quillayute, WA (UIL)
- Rapid City, SD (UNR)
- Reno, NV (REV)
- Riverton, WY (RIW)
- Salem, OR (SLE)
- Salt Lake City, UT (SLC)
- San Diego, CA (NKX)
- Santa Teresa, NM (EPZ)
- Shreveport, LA (SHV)
- Slidell, LA (LIX)
- Spokane, WA (OTX)
- Springfield, MO (SGF)
- Sterling, VA (IAD)
- Tampa Bay, FL (TBW)
- Topeka, KS (TOP)
- Upton, NY (OKX)
- Valley, NE (OAX)
- Vandenberg, CA (VBG)
- White Lake, MI (DTX)
- Wilmington, OH (ILN)
- Yarmouth, Nova Scotia (YQI)
- Zacatecas, Mexico (76526)
SPC observed soundings checked · Data: NOAA/SPC
Impacts
No supported U.S. monitoring areaOfficial forecast table
Forecast points
JTWC Warning 21 · advisory · forecast cycle . Forecast positions are future estimates, not observed imagery. Classification is shown only where published.
| Valid time / lead | Position | Classification | Sustained wind |
|---|---|---|---|
+12 h from forecast cycle | 31.2°N, 157.0°E | Tropical storm | 63 mph (55 kt) |
+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 advisoryEach 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.
| Official issuance | Revision kind | Record |
|---|---|---|
| JTWC Warning 21 · | advisory | Snapshot bb754e3a · Selected |
| JTWC Warning 20 · | advisory | Snapshot a34c26ab |
| JTWC Warning 19 · | advisory | Snapshot e7808ce0 |
| JTWC Warning 18 · | advisory | Snapshot b515c9cc |
| JTWC Warning 17 · | advisory | Snapshot 17571fa4 |
| JTWC Warning 16 · | advisory | Snapshot 5d7e3d7e |
| JTWC Warning 15 · | advisory | Snapshot c752b70f |
| JTWC Warning 14 · | advisory | Snapshot 311990a5 |
| JTWC Warning 13 · | advisory | Snapshot 07c0ce17 |
| JTWC Warning 12 · | advisory | Snapshot 5bfaa1fd |
| JTWC Warning 11 · | advisory | Snapshot 2246b2a9 |
| JTWC Warning 10 · | advisory | Snapshot d2af0300 |
| JTWC Warning 9 · | advisory | Snapshot d9150cf8 |
| JTWC Warning 8 · | advisory | Snapshot 70a99d6f |
| JTWC Warning 7 · | advisory | Snapshot 8017732a |
| JTWC Warning 6 · | advisory | Snapshot 1d3d7ebb |
| JTWC Warning 5 · | advisory | Snapshot 70f8e842 |
| JTWC Warning 4 · | advisory | Snapshot f9baa0bb |
| JTWC Warning 3 · | advisory | Snapshot dd0679d9 |
| JTWC Warning 2 · | advisory | Snapshot 6bf2dbf6 |
| JTWC Warning 1 · | 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
Intensity forecast
The official intensity forecast, drawn by this site from JTWC’s Warning 21 (). 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.
Imagery from NASA GIBS: NOAA GOES and JMA Himawari.
Model guidance
The models’ tracks, which are not a forecast, drawn by this site from JTWC’s Warning 21 (). 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.
Drawn live: if the radar fails, nothing older is shown in its place.
My places
Add a placeSaved 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.
Alerts in this area
Area briefPeek viewCheck local warning authorities.