STORM MODEWeather tracking workspace

Tropical Storm Pena

Tropical Storm 58 mph (50 kt) · 993 hPa · WNW at 9 mph (8 kt)

CPHC Best track ·

Historical advisory selected · current imagery and impacts are not attached

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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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 Riverton, WY (RIW), 12Z. Its levels are in the table below.
Observed Sounding at Riverton, WY (RIW), for (10 h 53 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)
Riverton, WY (RIW): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
834 mb1703 m3.2-1.5280° 7 kt
821 mb1829 m5.4-0.9305° 15 kt
801 mb2033 m9.00.0—
773 mb2326 m7.2-0.8—
763 mb2438 m7.5-1.0270° 7 kt
741 mb2673 m7.0-4.0—
717 mb2943 m6.2-7.8—
700 mb3139 m5.6-10.4260° 11 kt
682 mb3353 m4.6-12.2295° 15 kt
657 mb3658 m3.1-14.7260° 11 kt
633 mb3962 m1.5-17.1240° 12 kt
622 mb4097 m0.8-18.2—
609 mb4267 m-0.7-19.3215° 8 kt
592 mb4492 m-2.7-20.7—
564 mb4877 m-4.6-23.5270° 13 kt
536 mb5273 m-7.7-26.7—
521 mb5486 m-9.5-26.3265° 14 kt
510 mb5658 m-10.9-25.9—
500 mb5810 m-11.9-27.9245° 16 kt
482 mb6088 m-13.7-29.7—
462 mb6401 m-16.0-33.6260° 17 kt
444 mb6704 m-18.1-34.1—
426 mb7010 m-20.6-36.1275° 24 kt
414 mb7220 m-22.5-36.5—
400 mb7470 m-24.7-38.7280° 25 kt
385 mb7747 m-27.1-39.1—
359 mb8230 m-31.3-41.3285° 27 kt
344 mb8534 m-34.0-42.8290° 30 kt
329 mb8839 m-36.6-44.2295° 29 kt
315 mb9144 m-39.3-45.6300° 32 kt
302 mb9449 m-41.9-47.0305° 31 kt
300 mb9490 m-42.3-47.2305° 32 kt
288 mb9754 m-44.4-48.7305° 34 kt
276 mb10058 m-46.8-50.7305° 36 kt
263 mb10363 m-49.5-53.1305° 35 kt
251 mb10668 m-52.2-55.6305° 33 kt
250 mb10700 m-52.5-55.9305° 32 kt
240 mb10973 m-54.4-57.9305° 32 kt
228 mb11278 m-56.4-59.7300° 36 kt
218 mb11582 m-58.6-61.8300° 44 kt
200 mb12110 m-61.7-64.8295° 49 kt
188 mb12497 m-63.2-66.4295° 57 kt
177 mb12860 m-62.7-67.1—
162 mb13411 m-64.1-70.2280° 19 kt
150 mb13870 m-64.5-73.5275° 39 kt
139 mb14326 m-62.0-71.8280° 45 kt
126 mb14935 m-63.7-75.7275° 42 kt
114 mb15545 m-65.7-79.5275° 54 kt
103 mb16154 m-66.6-82.3280° 47 kt
100 mb16350 m-66.9-82.9290° 44 kt
90 mb16982 m-68.8-86.3310° 19 kt
80 mb17685 m-68.8-88.8260° 30 kt
70 mb18490 m-65.7-88.7255° 30 kt
59 mb19527 m-66.1-92.0280° 15 kt
48 mb20779 m-64.5-92.3240° 7 kt
38 mb22214 m-63.0-91.3255° 11 kt
27 mb24306 m-63.9-91.3305° 25 kt
17 mb27132 m-63.0-91.0300° 26 kt
7 mb32700 m-53.1-84.1265° 79 kt
6 mb33592 m-51.5-68.5—

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, 153.5°WTropical storm52 mph (45 kt)

+3 h from forecast cycle
11.5°N, 153.9°WTropical storm52 mph (45 kt)

+12 h from forecast cycle
11.6°N, 155.1°WTropical storm63 mph (55 kt)

+24 h from forecast cycle
11.6°N, 156.8°WTropical storm63 mph (55 kt)

+36 h from forecast cycle
11.5°N, 158.7°WTropical storm69 mph (60 kt)

+48 h from forecast cycle
11.5°N, 160.8°WTropical storm69 mph (60 kt)

+60 h from forecast cycle
11.5°N, 162.9°WTropical storm69 mph (60 kt)

+72 h from forecast cycle
11.8°N, 165.0°WTropical storm69 mph (60 kt)

+96 h from forecast cycle
12.7°N, 170.5°WHurricane75 mph (65 kt)

+120 h from forecast cycle
14.5°N, 177.7°WHurricane75 mph (65 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

NHC’s wind speed probabilities are not reported for this advisory.

NHC’s coastal watches and warnings

The advisory’s watches and warnings are not reported.

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 the satellite, loaded by your browser.

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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.

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Outside NWS coverageTropical Storm Pena
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