Forecast track
The official forecast track, drawn by this site from NHC’s Advisory (). Not an official NHC product. Data: NOAA/NHC.
STORM MODEWeather tracking workspace
Post-Tropical Cyclone Hernan
Current advisory context · 25 kt · 29 mph · 1009 hPa
Storm Mode · NHC Advisory ·
Advisory delayed · last complete issuance
Published advisory track · Advisory
Observed imagery loads separately from the advisory. The base map is not observed satellite imagery.
The cone describes center uncertainty; impacts can extend outside it.
MaverickWX map · Data: NOAA/NHC · 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
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 (56)
| Pressure | Height | Temperature | Dew point | Wind |
|---|---|---|---|---|
| 855 mb | 1475 m | 12.0 | 7.9 | 270° 4 kt |
| 850 mb | 1523 m | 11.4 | 7.2 | 265° 6 kt |
| 827 mb | 1752 m | 9.4 | 6.0 | — |
| 812 mb | 1904 m | 8.2 | 4.1 | — |
| 790 mb | 2134 m | 7.0 | 4.0 | 125° 5 kt |
| 761 mb | 2438 m | 4.4 | 2.2 | 050° 7 kt |
| 748 mb | 2577 m | 3.6 | 1.4 | — |
| 734 mb | 2731 m | 3.8 | 1.3 | — |
| 722 mb | 2865 m | 3.2 | 0.6 | — |
| 710 mb | 3001 m | 3.4 | 0.4 | — |
| 700 mb | 3116 m | 2.8 | -0.5 | 125° 18 kt |
| 680 mb | 3353 m | 1.2 | -1.5 | 160° 17 kt |
| 662 mb | 3566 m | -0.1 | -2.3 | — |
| 630 mb | 3962 m | -3.1 | -5.9 | 190° 34 kt |
| 608 mb | 4242 m | -5.3 | -8.4 | — |
| 583 mb | 4572 m | -8.2 | -10.6 | 190° 35 kt |
| 568 mb | 4773 m | -9.5 | -12.2 | — |
| 556 mb | 4938 m | -10.5 | -12.4 | — |
| 544 mb | 5105 m | -11.7 | -15.4 | — |
| 533 mb | 5262 m | -10.9 | -22.9 | — |
| 518 mb | 5481 m | -12.5 | -26.5 | — |
| 502 mb | 5720 m | -14.7 | -27.7 | — |
| 500 mb | 5750 m | -14.9 | -27.9 | 190° 39 kt |
| 483 mb | 6009 m | -17.3 | -29.3 | — |
| 473 mb | 6165 m | -18.3 | -31.3 | — |
| 459 mb | 6388 m | -20.1 | -32.1 | — |
| 440 mb | 6706 m | -22.0 | -35.3 | 185° 37 kt |
| 416 mb | 7107 m | -24.9 | -40.9 | — |
| 404 mb | 7315 m | -26.8 | -38.4 | 185° 32 kt |
| 400 mb | 7390 m | -27.5 | -37.5 | 190° 39 kt |
| 387 mb | 7620 m | -29.4 | -36.4 | 195° 42 kt |
| 374 mb | 7869 m | -31.5 | -35.2 | — |
| 361 mb | 8119 m | -32.3 | -34.6 | — |
| 345 mb | 8438 m | -34.3 | -36.8 | — |
| 333 mb | 8685 m | -35.7 | -37.8 | — |
| 319 mb | 8981 m | -38.5 | -41.3 | — |
| 309 mb | 9199 m | -40.3 | -42.9 | — |
| 300 mb | 9400 m | -42.3 | -44.7 | 180° 69 kt |
| 285 mb | 9754 m | -44.8 | -47.5 | 180° 68 kt |
| 268 mb | 10152 m | -46.9 | -49.8 | — |
| 250 mb | 10610 m | -48.5 | -56.5 | 195° 88 kt |
| 238 mb | 10933 m | -49.7 | -58.7 | — |
| 227 mb | 11243 m | -49.1 | -59.1 | — |
| 216 mb | 11568 m | -51.1 | -61.1 | — |
| 206 mb | 11877 m | -50.7 | -60.7 | — |
| 200 mb | 12070 m | -50.3 | -61.3 | 200° 76 kt |
| 189 mb | 12437 m | -52.5 | -63.5 | — |
| 179 mb | 12802 m | -53.1 | -64.1 | 200° 75 kt |
| 166 mb | 13272 m | -54.1 | -65.1 | — |
| 155 mb | 13710 m | -54.9 | -65.9 | — |
| 150 mb | 13920 m | -53.5 | -65.5 | 200° 67 kt |
| 139 mb | 14408 m | -54.5 | -66.5 | — |
| 128 mb | 14933 m | -56.5 | -67.5 | — |
| 114 mb | 15659 m | -62.1 | -72.1 | — |
| 103 mb | 16280 m | -65.5 | -74.5 | 205° 48 kt |
| 100 mb | 16460 m | -65.3 | -74.3 | 215° 42 kt |
Every station with a sounding (77)
- 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)
- YCX
- Zacatecas, Mexico (76526)
SPC observed soundings checked · Data: NOAA/SPC
Impacts
No supported U.S. monitoring areaCurrent warnings in the monitoring area
None: no U.S. state or territory is under NHC’s coastal watches or warnings or inside the cone, Advisory. Current geographical context; these alerts are not attributed to the cyclone.
No U.S. area
No U.S. state or territory is under NHC’s coastal watches or warnings or inside the cone. The storm’s own panels are shown, and no NWS alert is listed.
Official forecast table
Forecast points
NHC Advisory · advisory · forecast cycle Time not published. Forecast positions are future estimates, not observed imagery. Classification is shown only where published.
No official forecast points are published for this issuance. An invest is not given a fabricated cyclone forecast.
Advisory history and records
Advisory history
Return to latest advisoryThe issuance history could not be read. This is not an absence of previous advisories. 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.
No verifiable retained snapshots are listed.
Monitoring geography and current changes
- Area
- None: no U.S. state or territory is under NHC’s coastal watches or warnings or inside the cone, Advisory
Coastal watches and warnings: none in a U.S. state · Cone: crosses no U.S. state - Hazards
- —
- Window
- In force now, with this advisory’s forecast
- Made by
- NHC’s own products, as this site’s pipeline published them, read again with each new advisory. 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
Wind speed probabilities
NHC’s wind speed probabilities are not reported for this advisory.
NHC’s coastal watches and warnings
The advisory’s watches and warnings are not reported.
Intensity forecast
The official intensity forecast, drawn by this site from NHC’s Advisory (). Not an official NHC product. Data: NOAA/NHC.
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 NHC’s Advisory (). Not an official NHC product. Data: NOAA/NHC.
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
NHC advisory, 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.