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
Super Typhoon Champi
Current advisory context · 140 kt · 161 mph · 919 hPa · NW at 9 kt
Storm Mode · JTWC Warning 21 ·
Latest published advisory
Published advisory track · Warning 21
Observed imagery loads separately from the advisory. The base map is not observed satellite imagery.
JTWC does not publish an NHC cone.
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
Current cached context, independently dated. Regional reference: GU; a reference within a wider monitoring area does not replace the complete warning geography. 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 (60)
| Pressure | Height | Temperature | Dew point | Wind |
|---|---|---|---|---|
| 831 mb | 1703 m | 18.0 | 0.0 | 030° 4 kt |
| 819 mb | 1826 m | 15.2 | -1.8 | — |
| 793 mb | 2096 m | 12.4 | -1.6 | — |
| 778 mb | 2255 m | 12.2 | -2.8 | — |
| 761 mb | 2438 m | 11.1 | -4.0 | 190° 4 kt |
| 739 mb | 2682 m | 9.0 | -4.0 | — |
| 720 mb | 2896 m | 8.8 | -7.2 | — |
| 709 mb | 3022 m | 7.8 | -10.2 | — |
| 700 mb | 3127 m | 6.8 | -10.2 | 190° 6 kt |
| 681 mb | 3352 m | 5.0 | -13.0 | — |
| 658 mb | 3631 m | 2.4 | -12.6 | — |
| 647 mb | 3767 m | 1.4 | -14.6 | — |
| 631 mb | 3962 m | -0.3 | -13.4 | 255° 6 kt |
| 620 mb | 4109 m | -1.5 | -12.5 | — |
| 608 mb | 4267 m | -2.4 | -15.1 | 255° 4 kt |
| 562 mb | 4877 m | -6.0 | -25.0 | 250° 10 kt |
| 549 mb | 5068 m | -7.1 | -28.1 | — |
| 536 mb | 5254 m | -8.5 | -28.5 | — |
| 520 mb | 5486 m | -10.1 | -29.4 | 230° 15 kt |
| 500 mb | 5790 m | -12.3 | -29.3 | 240° 18 kt |
| 481 mb | 6084 m | -14.3 | -33.3 | — |
| 463 mb | 6371 m | -16.3 | -36.3 | — |
| 443 mb | 6700 m | -18.3 | -35.3 | — |
| 427 mb | 6972 m | -20.5 | -38.5 | — |
| 417 mb | 7147 m | -22.1 | -38.1 | — |
| 406 mb | 7342 m | -23.5 | -40.5 | — |
| 400 mb | 7450 m | -24.3 | -41.3 | 270° 18 kt |
| 377 mb | 7879 m | -27.7 | -41.7 | — |
| 362 mb | 8170 m | -29.9 | -44.9 | — |
| 350 mb | 8409 m | -31.7 | -45.7 | — |
| 329 mb | 8839 m | -35.4 | -46.4 | 255° 26 kt |
| 316 mb | 9123 m | -37.9 | -46.9 | — |
| 301 mb | 9449 m | -40.1 | -51.8 | 255° 29 kt |
| 300 mb | 9480 m | -40.3 | -52.3 | 250° 28 kt |
| 288 mb | 9754 m | -42.8 | -54.3 | 250° 31 kt |
| 275 mb | 10058 m | -45.3 | -56.3 | 250° 28 kt |
| 264 mb | 10333 m | -47.3 | -55.3 | — |
| 251 mb | 10668 m | -49.7 | -57.7 | 245° 32 kt |
| 250 mb | 10690 m | -49.9 | -57.9 | 245° 35 kt |
| 229 mb | 11260 m | -54.7 | -59.5 | — |
| 219 mb | 11547 m | -55.5 | -61.5 | — |
| 208 mb | 11887 m | -54.7 | -62.2 | 250° 46 kt |
| 200 mb | 12130 m | -54.1 | -62.1 | 255° 48 kt |
| 189 mb | 12497 m | -53.3 | -63.7 | 250° 44 kt |
| 172 mb | 13097 m | -54.1 | -66.1 | — |
| 150 mb | 13970 m | -56.3 | -70.3 | 265° 52 kt |
| 139 mb | 14452 m | -58.3 | -74.3 | — |
| 129 mb | 14935 m | -60.6 | -77.2 | 260° 54 kt |
| 117 mb | 15545 m | -62.7 | -81.3 | 265° 53 kt |
| 106 mb | 16154 m | -63.4 | -83.4 | 265° 61 kt |
| 100 mb | 16490 m | -63.5 | -84.5 | 285° 40 kt |
| 89 mb | 17203 m | -63.5 | -86.7 | 265° 34 kt |
| 79 mb | 17933 m | -63.2 | -88.2 | 275° 18 kt |
| 69 mb | 18758 m | -64.5 | -89.5 | 280° 25 kt |
| 55 mb | 20135 m | -64.9 | -89.9 | — |
| 44 mb | 21476 m | -61.1 | -87.1 | — |
| 34 mb | 23125 m | -60.6 | -86.7 | 220° 10 kt |
| 24 mb | 25338 m | -54.2 | -81.2 | 335° 10 kt |
| 14 mb | 28816 m | -51.8 | -79.9 | 355° 7 kt |
| 7 mb | 33486 m | -45.7 | -69.7 | — |
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 areaCurrent warnings in the monitoring area
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.
No U.S. area
No U.S. territory is in this storm’s area: JTWC’s track passes within 300 nm of none. Its own panels are shown, and no NWS alert is listed.
Official 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 | 15.9°N, 135.5°E | super typhoon | 130 kt · 150 mph |
+24 h from forecast cycle | 17.0°N, 133.0°E | super typhoon | 145 kt · 167 mph |
+36 h from forecast cycle | 18.1°N, 130.5°E | super typhoon | 140 kt · 161 mph |
+48 h from forecast cycle | 19.3°N, 128.5°E | super typhoon | 130 kt · 150 mph |
+60 h from forecast cycle | 20.3°N, 126.9°E | typhoon | 120 kt · 138 mph |
+72 h from forecast cycle | 21.1°N, 125.7°E | typhoon | 110 kt · 127 mph |
+96 h from forecast cycle | 23.8°N, 123.7°E | typhoon | 95 kt · 109 mph |
+120 h from forecast cycle | 27.6°N, 123.4°E | typhoon | 70 kt · 81 mph |
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 34544bc3 · Selected |
| JTWC Warning 20 · | advisory | Snapshot 7c7a42d9 |
| JTWC Warning 19 · | advisory | Snapshot df4ad817 |
| JTWC Warning 18 · | advisory | Snapshot fee9f0ca |
| JTWC Warning 17 · | advisory | Snapshot ded1ea58 |
| JTWC Warning 16 · | advisory | Snapshot 610609f3 |
| JTWC Warning 15 · | advisory | Snapshot 8da30f44 |
| JTWC Warning 14 · | advisory | Snapshot 066b411c |
| JTWC Warning 13 · | advisory | Snapshot 7b6b7d88 |
| JTWC Warning 12 · | advisory | Snapshot adcb8e93 |
| JTWC Warning 11 · | advisory | Snapshot 0bf22ebc |
| JTWC Warning 10 · | advisory | Snapshot eea89e7f |
| JTWC Warning 8 · | advisory | Snapshot ff92eaa6 |
| JTWC Warning 7 · | advisory | Snapshot 9d193cf4 |
| JTWC Warning 6 · | advisory | Snapshot 4d09f045 |
| JTWC Warning 5 · | advisory | Snapshot 7447d924 |
| JTWC Warning 4 · | advisory | Snapshot 2d609133 |
| JTWC Warning 3 · | advisory | Snapshot d96ff9c8 |
| JTWC Warning 2 · | advisory | Snapshot d99cea2d |
| JTWC Warning 1 · | first | Snapshot 99aef0d4 |
Monitoring geography and current changes
- 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 3° 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.
Live tiles; the radar keeps no last-good copy.
Sources
JTWC warning, as published checked
Radar live tiles, no last-good copy
No supported NWS monitoring area. Check local warning authorities.
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.