STORM MODEWeather tracking workspace

Tropical Storm Pena

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

CPHC Advisory 10 ·

Latest advisory

CPHC forecast for Tropical Storm Pena, Advisory 10; rendered by MaverickWX
Published advisory track · Advisory 10

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 Sterling, VA (IAD), 00Z. Its levels are in the table below.
Observed Sounding at Sterling, VA (IAD), for (3 h 21 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 (58)
Sterling, VA (IAD): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
1001 mb93 m14.44.4205° 7 kt
1000 mb94 m15.03.0185° 9 kt
975 mb305 m15.31.8215° 22 kt
955 mb484 m14.41.4—
942 mb600 m13.8-1.2—
931 mb699 m13.0-3.0—
925 mb753 m12.6-2.4235° 21 kt
907 mb914 m11.3-3.1245° 21 kt
895 mb1029 m10.4-3.6—
875 mb1219 m9.6-6.2260° 29 kt
850 mb1457 m8.6-9.4270° 37 kt
813 mb1823 m6.4-24.6—
783 mb2134 m4.5-17.5290° 50 kt
766 mb2308 m3.4-13.6—
754 mb2438 m3.0-16.1280° 53 kt
726 mb2743 m0.9-19.3280° 55 kt
709 mb2931 m0.4-31.6—
700 mb3033 m-0.1-25.1285° 54 kt
690 mb3148 m-0.9-14.9—
676 mb3311 m-1.5-27.5—
665 mb3441 m-1.9-22.9—
650 mb3622 m-2.7-20.7—
637 mb3781 m-3.3-29.3—
627 mb3906 m-3.7-17.7—
617 mb4033 m-3.7-27.7—
599 mb4267 m-5.1-40.1275° 53 kt
576 mb4572 m-7.9-39.4275° 53 kt
553 mb4877 m-10.6-38.7280° 56 kt
540 mb5067 m-12.3-38.3—
500 mb5650 m-16.5-46.5275° 60 kt
471 mb6096 m-20.4-47.9280° 62 kt
455 mb6350 m-22.7-48.7—
432 mb6728 m-25.9-46.9—
400 mb7280 m-30.7-40.7290° 70 kt
383 mb7588 m-33.1-42.1—
362 mb7983 m-36.3-50.3—
338 mb8456 m-40.3-52.3—
319 mb8839 m-43.4-56.5285° 78 kt
306 mb9128 m-46.1-54.1—
300 mb9260 m-47.3-57.3290° 73 kt
281 mb9689 m-50.7-63.7—
267 mb10020 m-53.9-63.9—
257 mb10264 m-55.1-64.1—
250 mb10440 m-55.1-71.1275° 88 kt
236 mb10806 m-56.0-71.4280° 95 kt
219 mb11278 m-54.6-75.7295° 87 kt
200 mb11860 m-55.7-77.7265° 47 kt
190 mb12186 m-56.5-77.5—
178 mb12603 m-55.2-79.7270° 76 kt
164 mb13127 m-53.5-82.5—
150 mb13700 m-54.3-83.3285° 53 kt
130 mb14630 m-57.9-84.6295° 48 kt
118 mb15240 m-58.6-85.4280° 49 kt
107 mb15850 m-60.3-86.1265° 41 kt
100 mb16250 m-61.1-86.1280° 39 kt
88 mb17069 m-62.3-87.5265° 35 kt
76 mb17982 m-64.5-88.5—
75 mb18055 m-63.5-88.5—

SPC observed soundings checked · Data: NOAA/SPC

Impacts

No supported U.S. monitoring area
Official forecast table

Forecast points

CPHC Advisory 10 · 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, 157.2°WTropical storm46 mph (40 kt)

+3 h from forecast cycle
11.4°N, 157.6°WTropical storm46 mph (40 kt)

+12 h from forecast cycle
11.4°N, 159.2°WTropical storm46 mph (40 kt)

+24 h from forecast cycle
11.3°N, 161.5°WTropical storm46 mph (40 kt)

+36 h from forecast cycle
11.3°N, 163.5°WTropical storm46 mph (40 kt)

+48 h from forecast cycle
11.2°N, 165.6°WTropical storm52 mph (45 kt)

+60 h from forecast cycle
11.1°N, 168.0°WTropical storm52 mph (45 kt)

+72 h from forecast cycle
11.3°N, 170.9°WTropical storm52 mph (45 kt)

+96 h from forecast cycle
12.6°N, 177.1°WTropical storm46 mph (40 kt)

+120 h from forecast cycle
14.4°N, 177.2°ETropical storm46 mph (40 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, Advisory 10
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 Advisory 10

The official forecast track, drawn by this site from CPHC’s Advisory 10 (). 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 170w6%——
10n 165w5%——

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, Advisory 10, 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 Advisory 10

The official intensity forecast, drawn by this site from CPHC’s Advisory 10 (). 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 Advisory 10

The models’ tracks, which are not a forecast, drawn by this site from CPHC’s Advisory 10 (). 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.