STORM MODEWeather tracking workspace

Tropical Storm Pena

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

CPHC Best track ·

Latest best track

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 GRB, 12Z. Its levels are in the table below.
Observed Sounding at GRB, for (8 h 39 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 (57)
GRB: the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
985 mb214 m5.03.8255° 3 kt
974 mb305 m5.34.1255° 16 kt
962 mb407 m5.64.5—
938 mb610 m8.32.8295° 36 kt
925 mb729 m9.81.8310° 32 kt
915 mb819 m10.8-1.2—
905 mb914 m10.2-3.6315° 28 kt
872 mb1219 m7.9-3.0305° 26 kt
850 mb1429 m7.0-7.0300° 28 kt
840 mb1526 m6.6-9.4—
809 mb1829 m4.0-9.4290° 33 kt
779 mb2134 m1.4-9.5290° 37 kt
750 mb2438 m-1.3-9.5290° 41 kt
722 mb2743 m-1.0-20.3300° 44 kt
707 mb2913 m-1.3-21.3—
700 mb2992 m-1.5-21.5300° 47 kt
682 mb3199 m-2.9-24.9—
670 mb3339 m-3.9-22.9—
643 mb3658 m-6.2-26.7295° 49 kt
619 mb3962 m-8.3-30.3290° 49 kt
595 mb4267 m-11.0-32.3290° 53 kt
571 mb4572 m-13.7-34.0290° 50 kt
548 mb4877 m-16.3-35.6290° 53 kt
527 mb5182 m-18.9-37.2290° 53 kt
506 mb5486 m-21.6-38.9285° 51 kt
500 mb5570 m-22.3-39.3275° 53 kt
485 mb5791 m-24.1-40.8275° 53 kt
465 mb6096 m-26.5-42.9285° 51 kt
440 mb6495 m-29.7-45.7—
427 mb6706 m-30.8-47.1300° 69 kt
409 mb7010 m-32.3-49.1295° 70 kt
400 mb7170 m-33.1-50.1300° 83 kt
375 mb7620 m-35.9-52.9300° 98 kt
359 mb7925 m-38.0-54.1295° 102 kt
343 mb8230 m-40.2-55.3295° 102 kt
328 mb8534 m-41.8-56.8290° 107 kt
314 mb8839 m-43.5-57.8295° 104 kt
303 mb9073 m-44.5-58.5—
300 mb9140 m-44.5-58.5295° 105 kt
289 mb9389 m-45.5-59.5—
273 mb9754 m-48.3-61.5300° 112 kt
261 mb10058 m-50.5-63.0300° 109 kt
250 mb10340 m-52.5-64.5300° 103 kt
238 mb10668 m-52.5-66.0295° 96 kt
227 mb10973 m-52.4-66.4295° 83 kt
216 mb11278 m-51.1-66.4280° 86 kt
204 mb11660 m-49.3-66.3—
200 mb11790 m-49.3-66.3305° 56 kt
188 mb12192 m-51.4-69.0305° 45 kt
175 mb12658 m-50.3-70.3—
163 mb13106 m-50.6-71.1290° 47 kt
150 mb13660 m-52.1-74.1320° 41 kt
135 mb14326 m-57.0-79.7330° 23 kt
124 mb14867 m-58.7-83.7—
111 mb15545 m-59.7-85.7305° 30 kt
101 mb16148 m-59.7-87.7—
100 mb16210 m-59.7-87.7310° 21 kt

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
11.6°N, 155.6°WTropical storm46 mph (40 kt)

+3 h from forecast cycle
11.6°N, 156.1°WTropical storm46 mph (40 kt)

+12 h from forecast cycle
11.6°N, 157.4°WTropical storm46 mph (40 kt)

+24 h from forecast cycle
11.6°N, 159.4°WTropical storm46 mph (40 kt)

+36 h from forecast cycle
11.5°N, 161.5°WTropical storm46 mph (40 kt)

+48 h from forecast cycle
11.4°N, 163.4°WTropical storm52 mph (45 kt)

+60 h from forecast cycle
11.3°N, 165.4°WTropical storm52 mph (45 kt)

+72 h from forecast cycle
11.2°N, 167.7°WTropical storm58 mph (50 kt)

+96 h from forecast cycle
11.6°N, 174.0°WTropical storm52 mph (45 kt)

+120 h from forecast cycle
13.6°N, 179.7°ETropical storm52 mph (45 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 170w9%——
10n 165w5%——
10n 175w5%——

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 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 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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