Forecast track
The official forecast track, drawn by this site from JTWC’s Warning 5 (). Not an official JTWC product. Data: JTWC. JTWC’s own.
STORM MODEWeather tracking workspace
Tropical Storm Cempaka
Current advisory context · Tropical Storm 52 mph (45 kt) · 999 hPa · NW at 18 mph (16 kt)
JTWC Warning 5 ·
Historical advisory selected · current imagery and impacts are not attached
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
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
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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 (55)
| Pressure | Height | Temperature | Dew point | Wind |
|---|---|---|---|---|
| 999 mb | 171 m | 15.4 | 12.6 | 050° 5 kt |
| 979 mb | 349 m | 14.2 | 12.2 | — |
| 954 mb | 577 m | 12.8 | 8.9 | — |
| 925 mb | 846 m | 10.8 | 8.2 | 095° 5 kt |
| 904 mb | 1037 m | 9.6 | 8.0 | — |
| 893 mb | 1139 m | 9.6 | 6.4 | — |
| 880 mb | 1261 m | 9.4 | 6.0 | — |
| 865 mb | 1404 m | 9.2 | 8.8 | — |
| 850 mb | 1549 m | 9.6 | 7.5 | 035° 5 kt |
| 830 mb | 1747 m | 8.8 | 4.8 | — |
| 808 mb | 1969 m | 7.8 | 3.0 | — |
| 792 mb | 2134 m | 6.5 | 3.5 | 025° 2 kt |
| 766 mb | 2407 m | 4.2 | 4.1 | — |
| 736 mb | 2732 m | 3.0 | 2.6 | — |
| 700 mb | 3139 m | 2.0 | 0.4 | 265° 11 kt |
| 680 mb | 3373 m | 1.6 | -1.1 | — |
| 667 mb | 3529 m | 0.6 | -2.4 | — |
| 656 mb | 3658 m | -0.1 | -3.2 | 285° 15 kt |
| 632 mb | 3962 m | -1.8 | -5.1 | 300° 18 kt |
| 611 mb | 4230 m | -3.3 | -6.8 | — |
| 601 mb | 4360 m | -4.5 | -7.6 | — |
| 589 mb | 4519 m | -4.7 | -10.7 | — |
| 578 mb | 4668 m | -5.7 | -10.7 | — |
| 563 mb | 4877 m | -6.7 | -13.1 | 280° 22 kt |
| 552 mb | 5028 m | -7.7 | -14.7 | — |
| 534 mb | 5285 m | -10.1 | -16.1 | — |
| 523 mb | 5445 m | -11.3 | -19.3 | — |
| 513 mb | 5594 m | -12.1 | -20.1 | — |
| 503 mb | 5744 m | -12.7 | -20.7 | — |
| 500 mb | 5790 m | -12.9 | -18.9 | 260° 41 kt |
| 482 mb | 6069 m | -14.5 | -19.5 | — |
| 459 mb | 6436 m | -17.9 | -19.2 | — |
| 448 mb | 6617 m | -19.1 | -19.2 | — |
| 414 mb | 7199 m | -23.1 | -23.7 | — |
| 400 mb | 7450 m | -24.7 | -34.7 | 245° 50 kt |
| 380 mb | 7820 m | -27.7 | -37.7 | — |
| 351 mb | 8384 m | -32.7 | -40.7 | — |
| 315 mb | 9137 m | -37.9 | -41.8 | — |
| 305 mb | 9358 m | -39.9 | -43.8 | — |
| 300 mb | 9470 m | -40.9 | -43.9 | 255° 75 kt |
| 284 mb | 9842 m | -44.5 | -48.1 | — |
| 270 mb | 10181 m | -46.9 | -48.4 | — |
| 259 mb | 10457 m | -48.7 | -52.0 | — |
| 250 mb | 10690 m | -49.1 | -62.1 | 250° 65 kt |
| 239 mb | 10973 m | -49.1 | -68.1 | 250° 65 kt |
| 229 mb | 11278 m | -50.5 | -69.5 | 245° 76 kt |
| 200 mb | 12140 m | -55.1 | -73.1 | 260° 69 kt |
| 186 mb | 12600 m | -56.7 | -75.7 | — |
| 172 mb | 13106 m | -58.1 | -76.7 | 265° 64 kt |
| 160 mb | 13546 m | -57.7 | -77.7 | — |
| 150 mb | 13950 m | -59.5 | -78.5 | 280° 33 kt |
| 134 mb | 14630 m | -62.9 | -80.3 | 275° 28 kt |
| 122 mb | 15240 m | -66.0 | -82.0 | 295° 32 kt |
| 111 mb | 15788 m | -69.5 | -83.5 | 295° 30 kt |
| 100 mb | 16410 m | -69.1 | -84.1 | 275° 33 kt |
Every station with a sounding (75)
- 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)
- 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 5 · 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 | 21.2°N, 140.1°E | Tropical storm | 69 mph (60 kt) |
+24 h from forecast cycle | 22.2°N, 137.3°E | Typhoon | 86 mph (75 kt) |
+36 h from forecast cycle | 23.0°N, 135.3°E | Typhoon | 104 mph (90 kt) |
+48 h from forecast cycle | 23.8°N, 134.7°E | Typhoon | 115 mph (100 kt) |
+60 h from forecast cycle | 24.4°N, 135.9°E | Typhoon | 109 mph (95 kt) |
+72 h from forecast cycle | 25.1°N, 138.6°E | Typhoon | 98 mph (85 kt) |
+96 h from forecast cycle | 27.2°N, 145.4°E | Tropical storm | 63 mph (55 kt) |
+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 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 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 · Selected |
| 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 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
Intensity forecast
The official intensity forecast, drawn by this site from JTWC’s Warning 5 (). Not an official JTWC product. Data: JTWC. JTWC’s own.
Satellite
The storm’s page shows it on the satellite, loaded by your browser.
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 5 (). 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
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Alerts in this area
Area briefPeek viewCheck local warning authorities.