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Tropical Storm Pena

Tropical Storm 46 mph (40 kt) · 1002 hPa · W at 8 mph (7 kt)

CPHC Advisory 10 ·

Latest advisory

CPHC forecast for Tropical Storm Pena, Advisory 10; rendered by MaverickWX
Published advisory track · Advisory 10

Observed imagery loads separately from the advisory. The base map is not observed satellite imagery.

ⓘ About this map

The cone describes center uncertainty; impacts can extend outside it.

Basemap

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.

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Choose Forecast for a pinned issuance and valid time.

Analysis

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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 Boise, ID (BOI), 00Z. Its levels are in the table below.
Observed Sounding at Boise, ID (BOI), for (3 h 21 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 (50)
Boise, ID (BOI): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
919 mb874 m16.02.0300° 6 kt
903 mb1023 m14.22.2—
887 mb1174 m13.8-1.2—
863 mb1406 m12.6-3.4—
850 mb1533 m11.4-3.6000° 6 kt
797 mb2062 m7.6-5.6280° 7 kt
738 mb2694 m3.0-8.0—
721 mb2881 m1.4-7.5215° 20 kt
706 mb3051 m0.0-7.0—
700 mb3119 m-0.3-7.3220° 23 kt
689 mb3246 m-0.7-5.7—
678 mb3374 m-1.3-9.3—
662 mb3564 m-1.3-22.3—
640 mb3833 m-2.9-22.9—
603 mb4302 m-5.3-14.3—
586 mb4525 m-6.7-14.3270° 47 kt
555 mb4948 m-9.3-14.3—
534 mb5246 m-10.7-14.8—
519 mb5465 m-11.5-19.5—
500 mb5750 m-12.9-17.7255° 52 kt
490 mb5904 m-14.1-18.7—
466 mb6283 m-17.3-22.3—
437 mb6762 m-21.3-24.2—
422 mb7019 m-23.1-27.3—
406 mb7301 m-24.9-27.9255° 64 kt
400 mb7410 m-25.3-28.1255° 63 kt
389 mb7612 m-26.5-28.9—
362 mb8126 m-30.5-33.5—
342 mb8527 m-33.7-38.6—
324 mb8903 m-36.7-43.7—
312 mb9162 m-38.9-47.9—
300 mb9430 m-40.5-53.5260° 72 kt
286 mb9755 m-43.3-54.3—
274 mb10043 m-45.7-53.7—
264 mb10291 m-47.9-53.9—
251 mb10624 m-49.9-54.9—
250 mb10650 m-50.3-56.3260° 74 kt
238 mb10967 m-52.7-58.7—
216 mb11582 m-57.9-62.9—
201 mb12029 m-61.7-67.7—
200 mb12060 m-61.7-67.7265° 80 kt
187 mb12473 m-64.5-70.5—
175 mb12876 m-66.1-72.1—
155 mb13612 m-66.9-76.9—
150 mb13810 m-65.9-78.9255° 64 kt
140 mb14230 m-64.1-82.1—
129 mb14727 m-65.8-83.3240° 42 kt
119 mb15218 m-67.5-84.5—
105 mb15975 m-65.9-85.9—
100 mb16270 m-67.3-86.3250° 52 kt

SPC observed soundings checked · Data: NOAA/SPC

Impacts

No supported U.S. monitoring area
Official forecast table

Forecast points

CPHC Advisory 10 · 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
11.4°N, 157.2°WTropical storm46 mph (40 kt)

+3 h from forecast cycle
11.4°N, 157.6°WTropical storm46 mph (40 kt)

+12 h from forecast cycle
11.4°N, 159.2°WTropical storm46 mph (40 kt)

+24 h from forecast cycle
11.3°N, 161.5°WTropical storm46 mph (40 kt)

+36 h from forecast cycle
11.3°N, 163.5°WTropical storm46 mph (40 kt)

+48 h from forecast cycle
11.2°N, 165.6°WTropical storm52 mph (45 kt)

+60 h from forecast cycle
11.1°N, 168.0°WTropical storm52 mph (45 kt)

+72 h from forecast cycle
11.3°N, 170.9°WTropical storm52 mph (45 kt)

+96 h from forecast cycle
12.6°N, 177.1°WTropical storm46 mph (40 kt)

+120 h from forecast cycle
14.4°N, 177.2°ETropical storm46 mph (40 kt)
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.

Monitoring geography
Area
None: no U.S. state or territory is under NHC’s coastal watches or warnings or inside the cone, Advisory 10
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
CPHC’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 Tropical Storm Pena, CPHC Advisory 10

The official forecast track, drawn by this site from CPHC’s Advisory 10 (). Not an official CPHC product. Data: NOAA/NHC. CPHC’s own.

Wind speed probabilities

Chance of sustained wind of at least 34, 50 and 64 knots, by place
Place34 kt50 kt64 kt
10n 170w6%——
10n 165w5%——

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, Advisory 10, 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 Tropical Storm Pena, CPHC Advisory 10

The official intensity forecast, drawn by this site from CPHC’s Advisory 10 (). Not an official CPHC product. Data: NOAA/NHC. CPHC’s own.

Satellite

The storm’s page shows it on NASA GIBS (NOAA GOES, JMA Himawari)’s imagery, loaded by your browser. GOES-West at 20° 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 Storm Pena, CPHC Advisory 10

The models’ tracks, which are not a forecast, drawn by this site from CPHC’s Advisory 10 (). Not an official CPHC product. Data: NOAA/NHC. CPHC’s own.

Radar

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

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Drawn live: if the radar fails, nothing older is shown in its place.

My places

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Outside NWS coverageTropical Storm Pena
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