STORM MODEWeather tracking workspace

Tropical Storm Pena

Tropical Storm 40 mph (35 kt) · 1004 hPa · W at 12 mph (10 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 Sterling, VA (IAD), 12Z. Its levels are in the table below.
Observed Sounding at Sterling, VA (IAD), for (7 h 56 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 (62)
Sterling, VA (IAD): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
1008 mb93 m2.01.1145° 3 kt
1000 mb152 m8.02.0210° 14 kt
990 mb236 m10.81.8—
963 mb466 m11.8-0.2—
947 mb610 m11.0-0.5240° 15 kt
925 mb802 m9.4-0.6265° 15 kt
913 mb914 m8.6-0.5270° 17 kt
882 mb1195 m6.6-0.4—
863 mb1374 m8.6-22.4—
850 mb1499 m8.2-22.8300° 22 kt
839 mb1606 m7.6-21.4—
827 mb1725 m9.4-36.6—
817 mb1829 m8.9-33.7300° 33 kt
787 mb2134 m6.5-12.3290° 32 kt
771 mb2301 m6.0-9.0—
758 mb2438 m5.5-10.6285° 32 kt
710 mb2972 m2.4-14.6—
700 mb3086 m1.6-13.4280° 35 kt
685 mb3260 m0.4-13.6—
674 mb3390 m0.0-16.0—
652 mb3658 m-2.0-16.9280° 38 kt
633 mb3888 m-3.7-17.7—
576 mb4627 m-8.3-23.3—
558 mb4877 m-9.7-26.4285° 47 kt
544 mb5069 m-10.7-28.7—
527 mb5312 m-13.1-24.1—
511 mb5546 m-14.7-25.7—
500 mb5710 m-15.9-27.9275° 54 kt
464 mb6271 m-19.5-35.5—
450 mb6499 m-20.7-36.7—
420 mb7010 m-25.2-27.4285° 67 kt
409 mb7199 m-26.9-28.7—
400 mb7360 m-27.7-30.6285° 66 kt
388 mb7578 m-28.9-33.3—
360 mb8110 m-32.5-42.5—
347 mb8369 m-34.3-43.3—
333 mb8655 m-36.3-46.3—
317 mb8995 m-38.9-48.9—
303 mb9303 m-41.3-53.3—
300 mb9370 m-41.9-53.9295° 79 kt
274 mb9978 m-46.7-57.7—
256 mb10426 m-50.3-62.3—
250 mb10580 m-51.7-59.7290° 81 kt
239 mb10869 m-54.3-61.3—
228 mb11168 m-55.9-63.9—
209 mb11716 m-59.1-69.1—
200 mb11990 m-59.1-72.1295° 80 kt
189 mb12344 m-61.1-72.1295° 82 kt
172 mb12933 m-61.3-76.3—
152 mb13716 m-62.8-80.5295° 72 kt
150 mb13780 m-62.9-80.9275° 68 kt
132 mb14563 m-61.9-83.9—
122 mb15049 m-62.3-84.3—
100 mb16260 m-65.5-86.5290° 65 kt
90 mb16905 m-64.7-86.7—
80 mb17621 m-65.6-87.4285° 31 kt
70 mb18430 m-68.5-88.5280° 33 kt
60 mb19363 m-66.1-89.1—
50 mb20480 m-61.5-88.5285° 34 kt
28 mb24067 m-61.7-89.1270° 35 kt
18 mb26853 m-53.2-85.0280° 46 kt
14 mb28333 m-51.9-84.9—

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
11.2°N, 164.2°WTropical storm40 mph (35 kt)

+3 h from forecast cycle
11.1°N, 164.7°WTropical storm40 mph (35 kt)

+12 h from forecast cycle
10.8°N, 166.2°WTropical storm40 mph (35 kt)

+24 h from forecast cycle
10.6°N, 168.5°WTropical storm40 mph (35 kt)

+36 h from forecast cycle
10.6°N, 171.3°WTropical storm40 mph (35 kt)

+48 h from forecast cycle
11.0°N, 174.3°WTropical storm40 mph (35 kt)

+60 h from forecast cycle
11.5°N, 177.3°WTropical storm40 mph (35 kt)

+72 h from forecast cycle
11.8°N, 179.9°ETropical storm40 mph (35 kt)

+96 h from forecast cycle
12.5°N, 174.8°ETropical depression35 mph (30 kt)

+120 h from forecast cycle
12.9°N, 170.8°ETropical depression35 mph (30 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.

Advisory history; retained records only
Official issuanceRevision kindRecord
CPHC Unnumbered state · advisorySnapshot ccf21749 · Selected
CPHC Advisory 16 · advisorySnapshot d4220ca3
CPHC Unnumbered state · advisorySnapshot 1b3d972c
CPHC Advisory 15 · advisorySnapshot d09d1ec3
CPHC Unnumbered state · advisorySnapshot 0abb013b
CPHC Advisory 14 · advisorySnapshot 6ab29e69
CPHC Unnumbered state · advisorySnapshot 0bcec4c9
CPHC Advisory 13 · advisorySnapshot f9ae50f7
CPHC Unnumbered state · advisorySnapshot 7c8b78ee
CPHC Advisory 12 · advisorySnapshot 0a3a81cd
CPHC Unnumbered state · advisorySnapshot 20477de4
CPHC Advisory 11 · advisorySnapshot 1dbe26fd
CPHC Unnumbered state · advisorySnapshot 5f4e816f
CPHC Advisory 10 · advisorySnapshot 0bcae4ab
CPHC Unnumbered state · advisorySnapshot d9b6706d
CPHC Advisory 9 · advisorySnapshot 23b015f2
CPHC Unnumbered state · advisorySnapshot 7081a2c1
CPHC Advisory 8 · advisorySnapshot 9cccd530
CPHC Unnumbered state · advisorySnapshot 72fa3e5c
CPHC Advisory 7 · advisorySnapshot 9d4bd068
CPHC Unnumbered state · advisorySnapshot 34f11ed6
CPHC Advisory 6 · advisorySnapshot 7b6af387
CPHC Unnumbered state · advisorySnapshot feb3dd6a
CPHC Advisory 5 · advisorySnapshot 056a0eb5
CPHC Unnumbered state · advisorySnapshot e296178e
CPHC Advisory 4 · advisorySnapshot 8e23913e
CPHC Unnumbered state · advisorySnapshot 9ce314ee
CPHC Advisory 3 · advisorySnapshot f167fe92
CPHC Unnumbered state · advisorySnapshot b161830f
CPHC Advisory 2 · advisorySnapshot 6eb780c9
CPHC Unnumbered state · advisorySnapshot c16d8efc
CPHC Advisory 1 · firstSnapshot 5be09be7
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 170w20%3%—
10n 175w8%——
10n 165w7%——

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 28° 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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