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Post-Tropical Cyclone Iselle

30 kt · 35 mph · 1002 hPa · WNW at 8 kt

Storm Mode · NHC Advisory · 27 Aug 03:00Z

Final advisory · monitoring can continue

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NHC forecast for Post-Tropical Cyclone Iselle, Advisory; rendered by MaverickWX

Published advisory track · Advisory

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MaverickWX map · Data: NOAA/NHC · not an official graphic

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Replay coverage and interpretation

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Analysis

Area, source times and interpretation

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Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Chihuahua, Mexico (76225), 12Z. Its levels are in the table below. — Observed Sounding at Chihuahua, Mexico (76225), for 12:00Z (8 h 50 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 (43)

Chihuahua, Mexico (76225): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
Pressure	Height	Temperature	Dew point	Wind
860 mb	1372 m	16.6	12.9	180° 2 kt
850 mb	1501 m	17.2	11.2	225° 6 kt
839 mb	1613 m	17.2	10.2	—
821 mb	1798 m	16.7	8.7	150° 4 kt
792 mb	2104 m	15.8	6.1	175° 18 kt
771 mb	2333 m	15.2	4.2	—
700 mb	3146 m	9.8	2.8	200° 21 kt
635 mb	3948 m	3.0	-0.6	—
580 mb	4677 m	-1.5	-10.5	—
529 mb	5402 m	-7.4	-12.9	230° 39 kt
501 mb	5825 m	-10.5	-17.5	—
500 mb	5840 m	-10.5	-17.5	220° 37 kt
461 mb	6463 m	-14.3	-27.3	—
422 mb	7131 m	-17.7	-46.7	—
400 mb	7530 m	-20.7	-53.7	210° 33 kt
389 mb	7735 m	-21.9	-49.9	—
370 mb	8100 m	-24.9	-40.5	200° 45 kt
328 mb	8964 m	-31.3	-44.3	—
313 mb	9293 m	-33.1	-40.9	185° 60 kt
300 mb	9590 m	-34.9	-40.9	175° 58 kt
269 mb	10345 m	-41.7	-45.4	—
255 mb	10707 m	-45.1	-49.5	—
250 mb	10840 m	-46.3	-52.3	190° 54 kt
237 mb	11192 m	-49.1	-60.1	—
224 mb	11560 m	-50.9	-66.9	—
209 mb	12012 m	-48.7	-77.7	210° 58 kt
200 mb	12300 m	-49.5	-78.5	210° 68 kt
182 mb	12900 m	-53.4	-80.1	225° 68 kt
166 mb	13485 m	-57.3	-81.7	240° 53 kt
150 mb	14130 m	-61.5	-83.5	230° 58 kt
137 mb	14678 m	-64.1	-84.3	235° 45 kt
124 mb	15280 m	-67.0	-85.3	195° 29 kt
101 mb	16520 m	-73.0	-87.2	220° 41 kt
100 mb	16580 m	-73.3	-87.3	225° 39 kt
87 mb	17397 m	-73.5	-86.6	260° 33 kt
75 mb	18277 m	-69.4	-85.8	190° 6 kt
64 mb	19227 m	-68.3	-86.8	190° 14 kt
53 mb	20365 m	-64.6	-88.0	275° 4 kt
41 mb	21937 m	-64.4	-88.5	195° 2 kt
31 mb	23675 m	-59.6	-88.5	280° 4 kt
21 mb	26128 m	-53.6	-87.3	245° 14 kt
11 mb	30371 m	-41.7	-80.7	—
7 mb	33677 m	-34.7	-80.7	—

Every station with a sounding (77)

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

Storm details

NHC Advisory · 27 Aug 03:00Z

Center position: 23.0°N, 125.9°W
Minimum pressure: 1002 hPa
Maximum sustained wind: 30 kt · 35 mph
Movement: WNW at 8 kt
Since comparison advisory: Comparison unavailable

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Forecast cycle Time not published. 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.

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Data coverage

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Impacts

No supported U.S. monitoring area

Coastal alertsCoastal alert data unavailable; not an all-clear Flooding rainOfficial rainfall context and coverage Storm surgeAvailability and coastal-only product limits Warnings in monitored areaNWS coverage unavailable here; not a global all-clear

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, 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 27 Aug 03:00Z · forecast cycle Time not published. 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
27 Aug 00:00Z +0 h from forecast cycle	22.8°N, 125.5°W	low	30 kt · 35 mph
27 Aug 03:00Z +3 h from forecast cycle	23.0°N, 125.9°W	low	30 kt · 35 mph
27 Aug 12:00Z +12 h from forecast cycle	23.6°N, 127.2°W	low	25 kt · 29 mph
28 Aug 00:00Z +24 h from forecast cycle	24.3°N, 128.8°W	low	20 kt · 23 mph
28 Aug 12:00Z +36 h from forecast cycle	24.8°N, 130.2°W	low	20 kt · 23 mph
29 Aug 00:00Z +48 h from forecast cycle	25.3°N, 131.6°W	low	20 kt · 23 mph

Advisory history and records

Advisory history

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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
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Forecast track

The official forecast track, drawn by this site from NHC’s Advisory (03:00Z). Not an official NHC product. Data: NOAA/NHC. NHC’s own.

Wind speed probabilities

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NHC’s coastal watches and warnings

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Intensity forecast

The official intensity forecast, drawn by this site from NHC’s Advisory (03:00Z). Not an official NHC product. Data: NOAA/NHC. NHC’s own.

Satellite

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Imagery from NASA GIBS: NOAA GOES and JMA Himawari.

Model guidance

The models’ tracks, which are not a forecast for Post-Tropical Cyclone Iselle, NHC Advisory

The models’ tracks, which are not a forecast, drawn by this site from NHC’s Advisory (03:00Z). Not an official NHC product. Data: NOAA/NHC. NHC’s own.

Radar

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Sources

NHC advisory, as published checked 20:50Z
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NWS coverage unavailablePost-Tropical Cyclone Iselle · — alerts

No supported NWS monitoring area. Check local warning authorities.

Not checked

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