STORM MODEWeather tracking workspace

Subtropical Storm Josephine

55 kt · 63 mph · 988 hPa · N at 5 kt

Storm Mode · NHC Best track ·

Latest published best-track state

Weather Operations Mode
Layers
NHC forecast for Subtropical Storm Josephine, Best track; rendered by MaverickWX
Published advisory track · Best track

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
Change time or forecast product

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

SPC’s skew-T diagram and hodograph of the sounding at Salem, OR (SLE), 00Z. Its levels are in the table below.
Observed Sounding at Salem, OR (SLE), for (1 h 49 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

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)
Salem, OR (SLE): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
1003 mb61 m21.05.0345° 7 kt
1000 mb91 m20.44.4335° 7 kt
952 mb513 m17.03.0—
933 mb685 m19.0-2.0—
925 mb759 m19.0-3.0350° 11 kt
906 mb937 m18.4-3.6010° 11 kt
850 mb1480 m15.8-4.2260° 8 kt
762 mb2394 m7.6-4.4—
727 mb2780 m5.4-7.6—
700 mb3088 m2.8-7.2185° 14 kt
685 mb3263 m1.8-11.2—
661 mb3547 m-0.5-11.3200° 18 kt
622 mb4031 m-4.5-11.5—
606 mb4235 m-6.2-14.5190° 16 kt
591 mb4431 m-7.9-14.9—
570 mb4711 m-9.1-22.1—
552 mb4958 m-10.9-22.2215° 15 kt
541 mb5113 m-11.9-24.9—
519 mb5428 m-14.3-23.8210° 12 kt
508 mb5590 m-15.5-23.8235° 11 kt
500 mb5710 m-16.1-26.1235° 14 kt
480 mb6016 m-17.9-29.9—
463 mb6284 m-19.5-34.5—
423 mb6947 m-25.1-45.1—
409 mb7190 m-27.3-44.3235° 18 kt
400 mb7350 m-28.7-47.7230° 18 kt
386 mb7605 m-30.9-50.9—
363 mb8038 m-34.9-52.9—
349 mb8312 m-37.1-50.1235° 20 kt
336 mb8573 m-39.5-46.5—
323 mb8843 m-41.9-54.9—
307 mb9186 m-44.3-59.3—
300 mb9340 m-45.7-58.7215° 31 kt
290 mb9565 m-47.7-58.7—
277 mb9866 m-50.2-60.9210° 26 kt
262 mb10227 m-52.6-62.6235° 13 kt
252 mb10479 m-52.5-66.5—
250 mb10530 m-52.7-66.7225° 9 kt
238 mb10844 m-54.9-65.9—
226 mb11172 m-56.1-74.1—
215 mb11487 m-56.3-66.3—
204 mb11816 m-58.9-67.9245° 13 kt
200 mb11940 m-58.7-69.7260° 13 kt
190 mb12264 m-57.1-75.3245° 12 kt
180 mb12609 m-54.1-81.1—
167 mb13087 m-56.1-82.1215° 11 kt
155 mb13562 m-58.1-83.1—
150 mb13770 m-57.1-83.1240° 24 kt
137 mb14348 m-54.5-83.1215° 27 kt
122 mb15086 m-58.7-83.7—
111 mb15685 m-53.5-84.5—
101 mb16287 m-57.7-85.7225° 19 kt
100 mb16350 m-57.7-85.7220° 19 kt
79 mb17822 m-56.1-86.1—
65 mb19065 m-59.7-87.2225° 24 kt
55 mb20112 m-59.0-87.0245° 12 kt
44 mb21508 m-59.5-87.5215° 8 kt
34 mb23132 m-56.5-86.4290° 10 kt
23 mb25716 m-58.5-87.5—
12 mb29558 m-51.3-84.3—
7 mb33582 m-45.1-82.1—

SPC observed soundings checked · Data: NOAA/SPC

Impacts

No supported U.S. monitoring area

Current warnings in the monitoring area

None: no U.S. state or territory is under NHC’s coastal watches or warnings or inside the cone, Best track. 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 Best track · advisory · forecast cycle . Forecast positions are future estimates, not observed imagery. Classification is shown only where published.

Published official forecast; no interpolated positions or winds
Valid time / leadPositionClassificationSustained wind

+0 h from forecast cycle
37.1°N, 69.6°Wsubtropical storm55 kt · 63 mph

+3 h from forecast cycle
37.4°N, 69.5°Wsubtropical storm55 kt · 63 mph

+12 h from forecast cycle
38.1°N, 69.0°Wsubtropical storm60 kt · 69 mph

+24 h from forecast cycle
39.6°N, 66.2°Wextratropical65 kt · 75 mph

+36 h from forecast cycle
41.4°N, 61.6°Wextratropical70 kt · 81 mph

+48 h from forecast cycle
43.3°N, 56.9°Wextratropical60 kt · 69 mph

+60 h from forecast cycle
44.1°N, 53.5°Wextratropical50 kt · 58 mph

+72 h from forecast cycle
44.4°N, 50.4°Wpost tropical cyclone45 kt · 52 mph

+96 h from forecast cycle
43.5°N, 37.5°Wpost tropical cyclone40 kt · 46 mph
Advisory history and records

Advisory history

Return to latest advisory

Each 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.

Advisory history; retained records only
Official issuanceRevision kindRecord
NHC Unnumbered state · advisorySnapshot 77cf7e1f · Selected
NHC Advisory 1 · firstSnapshot a2f96dd0
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, Best track
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

Forecast track

The official forecast track for Subtropical Storm Josephine, NHC Best track

The official forecast track, drawn by this site from NHC’s Best track (). Not an official NHC product. Data: NOAA/NHC. NHC’s own.

Wind speed probabilities

Chance of sustained wind of at least 34, 50 and 64 knots, by place
Place34 kt50 kt64 kt
Nantucket MA99%——
Sable Island92%36%6%
Hyannis MA66%——
Montauk Point63%——
Eddy Point NS59%——
Cape Race Nfld57%7%2%
Ile St Pierre56%3%—
Yarmouth NS54%——
Providence RI50%——
Sydney NS48%——
Halifax NS45%——
Burgeo Nfld32%——

NHC’s chance of sustained wind of at least each speed at each place it lists, through ; the places with the highest chance of 34 kt first. Issued . Data: NOAA/NHC. NHC’s table.

NHC’s coastal watches and warnings

NHC has no coastal watch or warning in effect for this storm.

In NHC’s words, Best track, issued . The areas NHC names, in the United States and abroad; for a place outside the United States its national service is the warning authority. Data: NOAA/NHC. NHC’s advisory.

Intensity forecast

The official intensity forecast for Subtropical Storm Josephine, NHC Best track

The official intensity forecast, drawn by this site from NHC’s Best track (). Not an official NHC product. Data: NOAA/NHC. NHC’s own.

Satellite

The storm’s page shows it on NASA GIBS (NOAA GOES, JMA Himawari)’s imagery, loaded by your browser. GOES-East at 6° from the storm's meridian.

Open the storm’s page

Imagery from NASA GIBS: NOAA GOES and JMA Himawari.

Model guidance

The models’ tracks, which are not a forecast for Subtropical Storm Josephine, NHC Best track

The models’ tracks, which are not a forecast, drawn by this site from NHC’s Best track (). Not an official NHC product. Data: NOAA/NHC. NHC’s own.

Radar

NOAA’s radar for the area, loaded by your browser as on the Radar page.

Open the radar

Live tiles; the radar keeps no last-good copy.

Sources

NWS coverage unavailableSubtropical Storm Josephine · — alerts
No supported NWS monitoring area. Check local warning authorities.
Not checked

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.