STORM MODEWeather tracking workspace

Tropical Storm Pena

Tropical Storm 40 mph (35 kt) · 1004 hPa · W at 9 mph (8 kt)

CPHC Best track ·

Source down · last complete advisory retained

CPHC forecast for Tropical Storm Pena, 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.

ⓘ 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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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 Rapid City, SD (UNR), 12Z. Its levels are in the table below.
Observed Sounding at Rapid City, SD (UNR), for (8 h 18 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 (60)
Rapid City, SD (UNR): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
900 mb1029 m12.81.8335° 11 kt
887 mb1150 m12.21.6330° 16 kt
868 mb1330 m11.31.2345° 22 kt
850 mb1504 m10.80.8000° 21 kt
830 mb1702 m9.40.2355° 23 kt
820 mb1803 m8.9-0.7345° 23 kt
805 mb1956 m8.4-1.8340° 21 kt
791 mb2101 m7.9-2.6340° 15 kt
773 mb2291 m7.3-3.7355° 12 kt
745 mb2595 m6.4-4.6—
731 mb2750 m5.2-5.8—
705 mb3046 m4.2-7.8—
700 mb3104 m3.8-8.2275° 18 kt
685 mb3279 m2.7-9.8255° 17 kt
670 mb3458 m1.6-11.4—
627 mb3988 m-2.3-12.9260° 29 kt
610 mb4206 m-3.5-13.5265° 31 kt
587 mb4508 m-5.1-18.1—
572 mb4711 m-6.3-16.3280° 35 kt
558 mb4904 m-7.5-14.5—
547 mb5059 m-7.9-15.9—
516 mb5509 m-11.3-17.3—
504 mb5689 m-12.8-19.5270° 50 kt
500 mb5750 m-13.3-20.3275° 50 kt
484 mb5996 m-14.9-23.6280° 48 kt
471 mb6202 m-16.3-26.3280° 53 kt
459 mb6396 m-17.6-24.4275° 50 kt
437 mb6761 m-20.4-26.2280° 47 kt
422 mb7019 m-22.3-27.3—
409 mb7248 m-23.9-29.9—
400 mb7410 m-25.3-30.3275° 56 kt
383 mb7723 m-27.4-33.9275° 54 kt
367 mb8031 m-29.3-38.3—
336 mb8655 m-34.1-44.2270° 56 kt
313 mb9149 m-38.1-48.1—
302 mb9395 m-40.1-50.1—
300 mb9440 m-40.5-50.5285° 54 kt
286 mb9757 m-43.1-51.8290° 59 kt
269 mb10164 m-46.5-53.5285° 61 kt
250 mb10650 m-50.5-55.5285° 63 kt
236 mb11024 m-53.9-58.7—
226 mb11302 m-55.7-60.5—
211 mb11735 m-59.5-63.6285° 64 kt
200 mb12070 m-62.1-66.0285° 63 kt
190 mb12384 m-64.7-68.5—
169 mb13090 m-67.9-72.6295° 61 kt
158 mb13496 m-65.9-71.9—
150 mb13810 m-66.5-73.5275° 52 kt
140 mb14227 m-67.2-75.3260° 53 kt
130 mb14675 m-66.4-76.1280° 55 kt
119 mb15210 m-67.5-78.3265° 54 kt
100 mb16270 m-64.1-79.1270° 50 kt
89 mb16982 m-64.8-81.4245° 50 kt
78 mb17761 m-64.5-83.5—
68 mb18616 m-65.4-86.5285° 34 kt
58 mb19582 m-66.8-89.8330° 10 kt
48 mb20732 m-63.0-90.6265° 23 kt
27 mb24277 m-63.4-91.4300° 25 kt
17 mb27120 m-61.9-90.3285° 18 kt
8 mb32131 m-55.9-73.9—

SPC observed soundings checked · Data: NOAA/SPC

Impacts

No supported U.S. monitoring area
Official forecast table

Forecast points

CPHC 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
11.4°N, 159.1°WTropical storm40 mph (35 kt)

+3 h from forecast cycle
11.4°N, 159.5°WTropical storm40 mph (35 kt)

+12 h from forecast cycle
11.4°N, 161.6°WTropical storm40 mph (35 kt)

+24 h from forecast cycle
11.3°N, 163.6°WTropical storm40 mph (35 kt)

+36 h from forecast cycle
11.1°N, 165.6°WTropical storm46 mph (40 kt)

+48 h from forecast cycle
11.1°N, 168.0°WTropical storm46 mph (40 kt)

+60 h from forecast cycle
11.4°N, 170.7°WTropical storm46 mph (40 kt)

+72 h from forecast cycle
12.0°N, 173.8°WTropical storm46 mph (40 kt)

+96 h from forecast cycle
13.4°N, 180.0°WTropical storm40 mph (35 kt)

+120 h from forecast cycle
14.7°N, 175.3°ETropical storm40 mph (35 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, 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
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 Best track

The official forecast track, drawn by this site from CPHC’s Best track (). 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 165w4%——

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 Tropical Storm Pena, CPHC Best track

The official intensity forecast, drawn by this site from CPHC’s Best track (). 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 24° 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 Best track

The models’ tracks, which are not a forecast, drawn by this site from CPHC’s Best track (). 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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