STORM MODEWeather tracking workspace

Tropical Storm Pena

Tropical Storm 46 mph (40 kt) · 1002 hPa · W at 7 mph (6 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 Glasgow, MT (GGW), 12Z. Its levels are in the table below.
Observed Sounding at Glasgow, MT (GGW), for (9 h 49 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 (53)
Glasgow, MT (GGW): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
934 mb700 m3.0-1.2105° 12 kt
925 mb774 m7.43.3130° 20 kt
910 mb914 m11.53.0175° 22 kt
898 mb1022 m14.22.2—
877 mb1219 m12.90.5175° 24 kt
850 mb1484 m10.8-0.2180° 21 kt
815 mb1829 m9.9-3.5225° 22 kt
791 mb2081 m8.8-4.2—
777 mb2229 m8.6-5.4—
758 mb2438 m8.1-7.3240° 26 kt
742 mb2609 m7.6-8.4—
730 mb2743 m7.8-11.9240° 24 kt
703 mb3048 m6.4-13.0260° 30 kt
700 mb3088 m6.0-14.0260° 29 kt
688 mb3230 m5.4-14.6—
678 mb3353 m4.6-17.0265° 30 kt
653 mb3658 m2.0-18.6270° 31 kt
636 mb3866 m0.4-20.6—
604 mb4267 m-3.1-20.2275° 30 kt
581 mb4572 m-5.8-20.0270° 31 kt
559 mb4877 m-8.5-19.7275° 33 kt
538 mb5182 m-11.2-19.4275° 33 kt
517 mb5486 m-13.4-21.3280° 38 kt
500 mb5740 m-15.1-24.1275° 35 kt
481 mb6031 m-16.7-27.7—
462 mb6331 m-18.9-27.9—
421 mb7010 m-24.6-29.8280° 40 kt
404 mb7315 m-27.3-31.7280° 38 kt
400 mb7380 m-27.9-32.2285° 44 kt
387 mb7620 m-29.9-33.4280° 45 kt
374 mb7859 m-31.7-34.9—
362 mb8088 m-33.3-36.4—
340 mb8534 m-36.7-39.7280° 51 kt
325 mb8839 m-39.0-41.8285° 52 kt
314 mb9071 m-40.7-43.4—
300 mb9380 m-42.9-45.4285° 53 kt
284 mb9754 m-46.3-48.8285° 52 kt
271 mb10058 m-49.0-51.3280° 53 kt
259 mb10352 m-51.5-53.9—
250 mb10580 m-53.7-56.0280° 56 kt
237 mb10922 m-56.9-59.2—
224 mb11278 m-60.1-62.1280° 63 kt
213 mb11582 m-62.3-64.3280° 63 kt
203 mb11887 m-64.7-66.6280° 69 kt
200 mb11980 m-65.3-67.3275° 68 kt
188 mb12358 m-63.9-67.6280° 76 kt
175 mb12797 m-62.1-67.1—
160 mb13347 m-64.9-71.9—
150 mb13740 m-64.5-72.5270° 61 kt
138 mb14251 m-62.9-72.9—
127 mb14765 m-61.1-73.1—
108 mb15765 m-62.9-76.9—
100 mb16240 m-61.7-77.7260° 29 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
11.5°N, 154.7°WTropical storm46 mph (40 kt)

+3 h from forecast cycle
11.5°N, 155.0°WTropical storm46 mph (40 kt)

+12 h from forecast cycle
11.5°N, 156.3°WTropical storm40 mph (35 kt)

+24 h from forecast cycle
11.5°N, 158.1°WTropical storm40 mph (35 kt)

+36 h from forecast cycle
11.4°N, 160.3°WTropical storm46 mph (40 kt)

+48 h from forecast cycle
11.3°N, 162.5°WTropical storm52 mph (45 kt)

+60 h from forecast cycle
11.1°N, 164.4°WTropical storm52 mph (45 kt)

+72 h from forecast cycle
10.9°N, 166.4°WTropical storm58 mph (50 kt)

+96 h from forecast cycle
11.0°N, 172.0°WTropical storm58 mph (50 kt)

+120 h from forecast cycle
12.5°N, 177.4°WTropical storm58 mph (50 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.

Open the storm’s page

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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