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
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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 |
|---|---|---|---|---|
| 1009 mb | 91 m | 22.2 | 7.2 | 040° 3 kt |
| 1000 mb | 163 m | 22.0 | 5.0 | 035° 4 kt |
| 925 mb | 832 m | 16.4 | 3.4 | 230° 6 kt |
| 914 mb | 934 m | 15.8 | 2.8 | — |
| 900 mb | 1065 m | 16.4 | -13.6 | — |
| 889 mb | 1169 m | 15.6 | -3.4 | — |
| 875 mb | 1304 m | 14.7 | 5.0 | 290° 10 kt |
| 857 mb | 1480 m | 13.8 | 6.8 | — |
| 850 mb | 1549 m | 13.4 | 6.4 | 275° 13 kt |
| 828 mb | 1769 m | 12.0 | 5.0 | — |
| 811 mb | 1943 m | 11.2 | 6.5 | — |
| 753 mb | 2558 m | 6.0 | 5.1 | — |
| 736 mb | 2745 m | 5.0 | 3.1 | — |
| 720 mb | 2924 m | 3.6 | 2.8 | — |
| 700 mb | 3153 m | 2.8 | 0.7 | 270° 19 kt |
| 676 mb | 3435 m | 2.4 | -2.1 | — |
| 659 mb | 3640 m | 0.7 | -3.2 | 260° 18 kt |
| 638 mb | 3900 m | -1.5 | -2.8 | — |
| 627 mb | 4038 m | -2.5 | -4.5 | — |
| 617 mb | 4166 m | -3.5 | -5.7 | — |
| 599 mb | 4399 m | -4.3 | -7.5 | — |
| 585 mb | 4585 m | -4.9 | -19.9 | — |
| 575 mb | 4721 m | -5.3 | -24.3 | — |
| 561 mb | 4913 m | -6.7 | -26.7 | — |
| 549 mb | 5082 m | -8.1 | -25.1 | — |
| 530 mb | 5354 m | -10.1 | -36.1 | — |
| 518 mb | 5530 m | -11.5 | -37.5 | — |
| 507 mb | 5694 m | -12.3 | -41.3 | — |
| 500 mb | 5800 m | -11.5 | -47.5 | 255° 31 kt |
| 453 mb | 6549 m | -17.1 | -54.1 | — |
| 431 mb | 6920 m | -19.7 | -55.7 | — |
| 420 mb | 7111 m | -21.1 | -37.1 | 270° 48 kt |
| 400 mb | 7470 m | -23.9 | -30.9 | 260° 50 kt |
| 383 mb | 7785 m | -26.7 | -30.6 | — |
| 373 mb | 7975 m | -28.3 | -34.3 | — |
| 361 mb | 8209 m | -29.3 | -37.3 | — |
| 350 mb | 8429 m | -29.5 | -42.5 | — |
| 332 mb | 8803 m | -32.5 | -37.5 | — |
| 320 mb | 9061 m | -34.1 | -44.1 | 250° 80 kt |
| 309 mb | 9305 m | -35.1 | -59.1 | — |
| 300 mb | 9510 m | -36.5 | -59.5 | 250° 73 kt |
| 284 mb | 9889 m | -39.9 | -57.9 | — |
| 274 mb | 10134 m | -41.9 | -48.9 | — |
| 263 mb | 10411 m | -44.1 | -62.1 | — |
| 250 mb | 10750 m | -47.3 | -63.3 | 255° 66 kt |
| 233 mb | 11214 m | -50.1 | -67.1 | — |
| 211 mb | 11856 m | -54.3 | -70.3 | — |
| 200 mb | 12200 m | -54.3 | -74.3 | 255° 50 kt |
| 179 mb | 12904 m | -56.1 | -78.1 | — |
| 155 mb | 13807 m | -59.7 | -81.7 | — |
| 150 mb | 14010 m | -60.9 | -81.9 | 255° 41 kt |
| 138 mb | 14526 m | -63.9 | -82.9 | — |
| 127 mb | 15034 m | -65.7 | -84.7 | — |
| 116 mb | 15582 m | -68.7 | -85.7 | — |
| 100 mb | 16470 m | -71.5 | -85.5 | 265° 41 kt |
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.
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Alerts in this area
Area briefPeek viewCheck local warning authorities.