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.

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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 Salt Lake City, UT (SLC), 12Z. Its levels are in the table below.
Observed Sounding at Salt Lake City, UT (SLC), for (7 h 50 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 (61)
Salt Lake City, UT (SLC): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
879 mb1289 m5.02.7120° 5 kt
859 mb1476 m8.02.0—
850 mb1562 m7.61.6200° 10 kt
829 mb1768 m7.60.6—
813 mb1929 m7.20.2—
799 mb2072 m8.0-1.0—
777 mb2302 m7.6-2.4—
764 mb2438 m8.2-3.3180° 15 kt
746 mb2639 m8.4-3.6—
733 mb2783 m7.2-3.8—
710 mb3048 m5.8-5.4215° 11 kt
700 mb3161 m5.2-5.8195° 15 kt
684 mb3353 m4.3-7.1200° 14 kt
668 mb3542 m3.6-8.4—
650 mb3763 m2.0-9.0—
634 mb3962 m0.8-11.1265° 11 kt
616 mb4194 m-0.5-13.5—
605 mb4338 m-1.7-13.7—
587 mb4572 m-2.9-17.2275° 11 kt
567 mb4852 m-4.3-21.3—
557 mb4992 m-5.3-21.3—
544 mb5182 m-6.6-24.0240° 15 kt
523 mb5486 m-8.5-27.3265° 16 kt
503 mb5791 m-10.3-30.1265° 16 kt
500 mb5830 m-10.5-30.5260° 16 kt
483 mb6096 m-12.7-31.7260° 15 kt
464 mb6401 m-15.0-34.3255° 13 kt
445 mb6706 m-17.3-36.9245° 19 kt
428 mb7003 m-19.5-39.5—
410 mb7315 m-22.4-38.6270° 13 kt
400 mb7500 m-24.1-38.1270° 15 kt
369 mb8084 m-29.3-39.3—
346 mb8534 m-32.5-45.3300° 26 kt
317 mb9144 m-38.2-49.7290° 24 kt
307 mb9373 m-40.3-51.3—
300 mb9530 m-41.3-52.3295° 24 kt
281 mb9970 m-45.1-53.1—
265 mb10363 m-48.2-55.1275° 21 kt
253 mb10668 m-50.5-56.7285° 27 kt
250 mb10740 m-51.1-57.1290° 28 kt
230 mb11278 m-55.5-60.5285° 28 kt
219 mb11582 m-57.8-62.3290° 32 kt
209 mb11887 m-59.8-64.1295° 30 kt
200 mb12150 m-61.7-65.7295° 38 kt
188 mb12532 m-63.3-67.8300° 45 kt
176 mb12937 m-63.7-69.7—
163 mb13409 m-63.1-71.1—
151 mb13879 m-62.7-72.7—
150 mb13920 m-62.7-72.7270° 40 kt
134 mb14630 m-65.1-76.8260° 45 kt
121 mb15240 m-66.0-79.8255° 41 kt
100 mb16380 m-67.7-84.7275° 38 kt
89 mb17091 m-68.9-87.9—
77 mb17947 m-67.5-89.1245° 24 kt
67 mb18783 m-68.4-92.8245° 26 kt
57 mb19756 m-66.5-93.2235° 7 kt
47 mb20925 m-65.6-93.5255° 26 kt
36 mb22535 m-64.3-92.3—
26 mb24554 m-62.4-90.4265° 22 kt
16 mb27545 m-61.7-89.9275° 35 kt
8 mb31846 m-53.3-71.3—

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.

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.

My places

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Outside NWS coverageTropical Storm Pena
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