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.

Open the complete replay reader (works without scripting or WebGL)

Choose Forecast for a pinned issuance and valid time.

Analysis

Choose product

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 Boise, ID (BOI), 12Z. Its levels are in the table below.
Observed Sounding at Boise, ID (BOI), for (9 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 (54)
Boise, ID (BOI): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
919 mb874 m9.20.2010° 3 kt
908 mb973 m11.4-0.6—
882 mb1219 m14.3-1.9135° 23 kt
869 mb1341 m14.4-2.6—
850 mb1526 m13.4-4.6165° 19 kt
820 mb1829 m11.2-6.4185° 11 kt
790 mb2134 m8.7-7.1240° 9 kt
778 mb2263 m7.6-7.4—
762 mb2438 m6.6-7.4255° 18 kt
745 mb2619 m5.6-7.4—
734 mb2743 m5.2-8.3250° 13 kt
723 mb2864 m4.8-9.2—
707 mb3048 m4.5-10.5245° 13 kt
700 mb3127 m4.0-11.0235° 16 kt
660 mb3604 m1.4-17.6—
643 mb3813 m0.0-17.0—
631 mb3962 m-0.8-18.7240° 39 kt
607 mb4267 m-2.6-16.0240° 42 kt
596 mb4417 m-3.5-14.5—
584 mb4572 m-4.6-18.9235° 45 kt
562 mb4877 m-6.7-24.1235° 43 kt
543 mb5146 m-8.5-26.5—
515 mb5554 m-11.7-28.7—
501 mb5765 m-13.5-29.5—
500 mb5780 m-13.7-27.7235° 48 kt
482 mb6058 m-15.3-31.3—
449 mb6590 m-19.1-36.1—
434 mb6842 m-20.7-30.7—
411 mb7242 m-23.9-31.9—
400 mb7440 m-24.9-44.9245° 53 kt
390 mb7624 m-26.1-41.1—
358 mb8230 m-31.8-41.3260° 58 kt
331 mb8786 m-36.3-46.3—
321 mb8998 m-38.1-48.1—
306 mb9326 m-41.1-46.1—
300 mb9460 m-42.1-47.1255° 61 kt
287 mb9754 m-44.7-49.4255° 63 kt
277 mb9992 m-46.7-53.7—
265 mb10282 m-49.3-53.6—
253 mb10583 m-51.5-55.4—
250 mb10660 m-52.3-56.4265° 54 kt
235 mb11058 m-55.7-60.1—
216 mb11582 m-59.2-65.1280° 57 kt
206 mb11887 m-61.5-66.9270° 45 kt
200 mb12070 m-62.9-67.9255° 46 kt
190 mb12384 m-65.5-70.5—
177 mb12814 m-67.7-72.2255° 68 kt
164 mb13279 m-61.3-80.3—
153 mb13716 m-63.3-80.8265° 54 kt
150 mb13830 m-63.9-80.9245° 55 kt
139 mb14293 m-65.2-82.1255° 71 kt
128 mb14794 m-64.5-83.5—
110 mb15712 m-65.6-85.2255° 69 kt
100 mb16290 m-66.3-86.3260° 61 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.

Open the radar

Drawn live: if the radar fails, nothing older is shown in its place.

My places

Add a place

Saved places are read from this device after scripting starts.

Search for a place

Search stays in this browser. A town point is not an address; no address-level surge is calculated.

Outside NWS coverageTropical Storm Pena
Check local warning authorities.