Tropical Depression Surigae

30 kt · 35 mph · NE at 7 kt

Storm Mode · JTWC Warning 30 · 30 Sep 12:00Z

Final advisory · monitoring can continue

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JTWC forecast for Tropical Depression Surigae, Warning 30; rendered by MaverickWX

Published advisory track · Warning 30

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MaverickWX map · Data: JTWC · not an official graphic

Change time or forecast product

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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.

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Analysis and model context

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Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Wilmington, OH (ILN), 12Z. Its levels are in the table below. — Observed Sounding at Wilmington, OH (ILN), for 12:00Z (8 h 58 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)

Wilmington, OH (ILN): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
Pressure	Height	Temperature	Dew point	Wind
996 mb	317 m	1.6	1.0	125° 3 kt
986 mb	400 m	7.0	3.1	130° 10 kt
963 mb	596 m	7.6	1.0	130° 7 kt
942 mb	778 m	6.4	0.0	140° 7 kt
931 mb	875 m	5.6	-1.4	—
925 mb	928 m	5.8	-3.2	140° 6 kt
904 mb	1116 m	7.6	-15.1	175° 7 kt
883 mb	1310 m	7.2	-16.8	—
868 mb	1450 m	7.0	-19.2	145° 11 kt
857 mb	1555 m	6.9	-21.0	135° 10 kt
850 mb	1622 m	6.8	-22.2	125° 10 kt
835 mb	1768 m	6.3	-23.5	120° 12 kt
814 mb	1976 m	5.6	-25.4	—
802 mb	2097 m	5.0	-24.6	125° 7 kt
789 mb	2230 m	5.3	-18.6	120° 3 kt
778 mb	2345 m	5.3	-13.3	350° 5 kt
742 mb	2730 m	3.2	-4.8	—
728 mb	2884 m	2.5	-7.2	065° 11 kt
710 mb	3087 m	1.6	-10.4	040° 10 kt
700 mb	3201 m	1.6	-15.4	040° 11 kt
685 mb	3376 m	2.8	-18.2	—
672 mb	3531 m	1.6	-15.8	025° 9 kt
654 mb	3750 m	0.0	-16.0	050° 7 kt
637 mb	3961 m	1.0	-22.3	065° 7 kt
618 mb	4205 m	0.9	-27.5	015° 7 kt
587 mb	4615 m	-2.1	-29.5	320° 14 kt
547 mb	5173 m	-6.0	-32.9	300° 15 kt
532 mb	5390 m	-7.8	-33.5	305° 15 kt
515 mb	5643 m	-9.9	-33.9	—
504 mb	5809 m	-11.4	-33.2	320° 17 kt
500 mb	5870 m	-11.9	-32.9	320° 17 kt
489 mb	6039 m	-13.3	-32.6	315° 18 kt
469 mb	6355 m	-15.7	-34.7	305° 16 kt
449 mb	6680 m	-18.4	-36.1	315° 10 kt
438 mb	6866 m	-19.9	-36.9	—
426 mb	7070 m	-21.7	-38.7	—
400 mb	7530 m	-25.3	-42.3	315° 13 kt
384 mb	7823 m	-27.7	-45.1	310° 17 kt
373 mb	8032 m	-29.4	-47.2	310° 16 kt
357 mb	8344 m	-31.8	-48.1	315° 20 kt
347 mb	8545 m	-33.3	-47.3	325° 17 kt
337 mb	8749 m	-34.9	-48.1	320° 17 kt
320 mb	9108 m	-37.8	-50.5	335° 18 kt
310 mb	9326 m	-39.4	-52.7	335° 15 kt
300 mb	9550 m	-40.7	-54.7	345° 17 kt
289 mb	9801 m	-42.3	-56.3	355° 19 kt
255 mb	10630 m	-48.2	-60.7	020° 28 kt
250 mb	10760 m	-49.3	-61.3	025° 26 kt
239 mb	11053 m	-51.5	-62.9	045° 31 kt
229 mb	11330 m	-53.5	-64.3	050° 28 kt
215 mb	11733 m	-56.3	-65.8	040° 37 kt
203 mb	12096 m	-58.9	-67.9	025° 32 kt
200 mb	12190 m	-59.5	-68.5	015° 32 kt
188 mb	12580 m	-57.9	-68.2	345° 48 kt
178 mb	12926 m	-55.8	-67.9	335° 41 kt
167 mb	13331 m	-56.9	-69.9	—
150 mb	14010 m	-58.5	-73.5	320° 42 kt
135 mb	14661 m	-61.5	-77.9	305° 48 kt
119 mb	15440 m	-65.1	-83.1	—
108 mb	16030 m	-64.8	-83.8	325° 30 kt
100 mb	16500 m	-63.7	-84.7	315° 25 kt

Every station with a sounding (76)

SPC observed soundings checked 20:45Z · Data: NOAA/SPC

Storm details

JTWC Warning 30 · 30 Sep 12:00Z

Center position: 31.8°N, 138.8°E
Minimum pressure: Not reported
Maximum sustained wind: 30 kt · 35 mph
Movement: NE at 7 kt
Change from comparison: Wind -5 kt · pressure Not comparable
Compared with Warning 29 · 30 Sep 06:00Z

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Forecast cycle 30 Sep 12:00Z. Center position belongs to the official state’s time, not imagery time. The warning center issued its final advisory; continuing flood/rain monitoring does not imply a new cyclone forecast.

Watched places

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Advisory comparison

Show previous forecast as a dashed line

Solid: Warning 30 · 30 Sep 12:00Z
Dashed: Warning 29 · 30 Sep 06:00Z

Compare positions and intensity

Solid: JTWC Warning 30 · 30 Sep 12:00Z
Dashed: JTWC Warning 29 · 30 Sep 06:00Z. Comparison uses each record’s own geometry. A revision is not a landfall or impact prediction.

Current-state revision (two separate official issuances)
Field	Selected issuance	Comparison issuance	Change
Maximum sustained wind	30 kt · 35 mph	35 kt · 40 mph	-5 kt
Minimum pressure	Not reported	Not reported	Not comparable
Center position	31.8°N, 138.8°E	31.2°N, 138.3°E	Different observation times; not a forecast shift

Forecast comparison unavailable: these records have no matching forecast valid times. No interpolation or six-hour step is assumed.

Data coverage

JTWC has no NHC cone, NHC wind probabilities or NHC civil coastal warnings. Local national services remain the warning authorities.

Geographic context: Natural Earth boundaries and representative place labels. Radar coverage is limited offshore. Satellite pixels keep their source palette and actual observation time. Missing imagery is not clear weather.

No supported U.S. NWS monitoring area for this advisory. This does not mean no warnings worldwide.

Lightning activity — GOES GLM

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Map layers, imagery opacity and source clocks

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Potential impacts and monitoring context

No supported U.S. monitoring area

Coastal alertsLocal national warning authorities apply Flooding rainOfficial rainfall context and coverage Storm surgeAvailability and coastal-only product limits Nearby severe warningsNWS coverage unavailable here; not a global all-clear

Current warnings in the monitoring area

None: JTWC’s forecast track passes within 300 nm of no U.S. territory with NWS zones, Warning 30. 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

Official forecast positions and intensity

JTWC Warning 30 · advisory 30 Sep 12:00Z · forecast cycle 30 Sep 12:00Z. Forecast positions are future estimates, not observed imagery. Classification is shown only where published.

Published official forecast; no interpolated positions or winds
Valid time / lead	Position	Classification	Sustained wind
1 Oct 00:00Z +12 h from forecast cycle	33.7°N, 141.1°E	tropical depression	30 kt · 35 mph
1 Oct 12:00Z +24 h from forecast cycle	36.5°N, 145.2°E	tropical depression	30 kt · 35 mph

Advisory history and records

Retained advisory records

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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 issuance	Revision kind	Record
JTWC Warning 30 · 30 Sep 12:00Z	advisory	Snapshot fe417aba · Selected
JTWC Warning 29 · 30 Sep 06:00Z	advisory	Snapshot c42914ce
JTWC Warning 28 · 30 Sep 00:00Z	advisory	Snapshot 9ee9be54

Monitoring geography and current changes

Area: None: JTWC’s forecast track passes within 300 nm of no U.S. territory with NWS zones, Warning 30
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

Forecast track

The official forecast track, drawn by this site from JTWC’s Warning 30 (12:00Z). Not an official JTWC product. Data: JTWC. JTWC’s own.

Intensity forecast

The official intensity forecast, drawn by this site from JTWC’s Warning 30 (12:00Z). 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 2° from the storm's meridian.

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Imagery from NASA GIBS: NOAA GOES and JMA Himawari.

Model guidance

The models’ tracks, which are not a forecast for Tropical Depression Surigae, JTWC Warning 30

The models’ tracks, which are not a forecast, drawn by this site from JTWC’s Warning 30 (12:00Z). 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.

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

Sources

JTWC warning, as published checked 20:58Z
Radar live tiles, no last-good copy

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