OCEAN GUIDANCE · LIVE SOURCES46.857°N · 124.243°W · 5 DAYS Compare with official bar reports and what you see on the water

Bar Crosser

Ocean model room

Arbitrary coastal or offshore point

Westport nearshore

Off-the-shelf models, official NWS coastal guidance, and the nearest live buoy—never blended. Recent Westport accuracy ordering focuses attention while every forecast stays visible.

Westportnearshore 20 NM offshoreoffshore Guide Canyoncanyon Grays Canyoncanyon

#1 recent Westport height

MFWAM global wave model

0.45 ft MAE · 1-day Hs

Forecast: 3.5 ft @ 7s · 12:00 PMLower energy

#2 recent Westport height

WAM HRES

0.51 ft MAE · 1-day Hs

Forecast: 3.1 ft @ 7s · 12:00 PMLower energy

Nearest observation

4.3 ft

7s peak · Grays Harbor, WA (CDIP 036)

0.0 NM away · observed 21m ago

Live retrieval

15 min

Pull-through edge refresh window

4 model families + NWS guidance · fetched 0m ago

Preliminary Westport orderingSignificant-wave-height accuracyNDBC 46211 · Apr 3–May 31 · spring sample only

#1MFWAM global wave model0.45 ft
#2WAM HRES0.51 ft
#3GWAM global wave model0.59 ft
#4GFS-Wave 0.16 degree1.06 ft

Ranking is local and preliminary; period skill is not used to order the models.

Multi-model comparison

Significant wave height

Every source remains separate. The recent Westport height leader is thicker and drawn on top; NWS guidance is dashed and unranked.

MFWAM global wave model#1WAM HRES#2GWAM global wave model#3GFS-Wave 0.16 degree#4NWS coastal raw forecast grid

Numbers under the picture

Period by model

Mean wave period in seconds. Cell color uses that model’s height and period together; arrows show direction waves come from.

Forecast	Tue12pm	Tue3pm	Tue6pm	Tue9pm	Wed12am	Wed3am	Wed6am	Wed9am	Wed12pm	Wed3pm	Wed6pm	Wed9pm	Thu12am	Thu3am	Thu6am	Thu9am	Thu12pm	Thu3pm	Thu6pm	Thu9pm	Fri12am	Fri3am	Fri6am	Fri9am	Fri12pm	Fri3pm	Fri6pm	Fri9pm	Sat12am	Sat3am	Sat6am	Sat9am	Sat12pm	Sat3pm
MFWAM global wave model#1 · 0.45 ft MAE	7sWNW	7sWNW	6sWNW	6sWNW	6sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	8sWNW	8sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	6sNW	6sNW	6sNW	6sNW	6sNW	6sNW	6sWNW
WAM HRES#2 · 0.51 ft MAE	7sWNW	7sWNW	6sWNW	6sNW	6sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	8sWNW	8sWNW	8sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	6sWNW	6sWNW	6sNW	6sWNW	6sWNW	6sWNW	6sWNW	6sWNW
GWAM global wave model#3 · 0.59 ft MAE	7sWNW	7sWNW	7sNW	6sNW	6sNW	7sWNW	7sWNW	8sWNW	8sWNW	8sWNW	7sWNW	7sWNW	7sWNW	7sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	7sWNW	7sWNW	7sNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW
GFS-Wave 0.16 degree#4 · 1.06 ft MAE	7sWNW	7sWNW	7sWNW	9sWNW	9sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	8sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	7sWNW	6sWNW	6sWNW	12sW	12sW	11sW	11sW	7sWNW
NWS coastal raw forecast grid	14s——	14s——	14s——	14s——	14s——	15s——	15s——	15s——	15s——	15s——	15s——	14s——	14s——	14s——	14s——	14s——	14s——	14s——	14s——	14s——	14s——	14s——	13s——	13s——	13s——	13s——	13s——	13s——	13s——	13s——	12s——	12s——	13s——	14s——

Lower energyElevatedRoughSCA seas criterionCell color combines that model’s height and H/T; red follows the WFO Seattle SCA seas criterion

At 12:00 PM

What makes up the sea

Total sea can hide crossing swells. These partitions show primary swell, secondary/tertiary swell where supplied, and local wind sea.

Source	Total sea	Primary swell	Secondary	Tertiary	Wind sea
MFWAM global wave model	3.5′ @ 7sWNW	3.3′ @ 5sWNW	1.0′ @ 14sSW	—	0.5′ @ 2sNNW
WAM HRES	3.1′ @ 7sWNW	—	—	—	—
GWAM global wave model	3.7′ @ 7sWNW	3.6′ @ 8sWNW	—	—	0.7′ @ 2sN
GFS-Wave 0.16 degree	3.0′ @ 7sWNW	2.9′ @ 7sWNW	0.7′ @ 10sWNW	0.6′ @ 16sWSW	0.0′ @ 0sN
NWS coastal raw forecast grid	4.0′ @ 14s—	—	—	—	—

Source provenance

Models are not interchangeable

MFWAM global wave modelMeteo-France / Copernicus Marine#1 recent Westport · 0.45 ft 1-day Hs MAE

Grid: ~8 km
Updates: 12h
Horizon: 10d
Cell: 46.875, -124.208

WAM HRESECMWF#2 recent Westport · 0.51 ft 1-day Hs MAE

Grid: ~9 km
Updates: 6h
Horizon: 15d
Cell: 46.854, -124.223

GWAM global wave modelDWD#3 recent Westport · 0.59 ft 1-day Hs MAE

Grid: ~25 km
Updates: 12h
Horizon: 4d
Cell: 46.750, -124.250

GFS-Wave 0.16 degreeNOAA NCEP#4 recent Westport · 1.06 ft 1-day Hs MAE

Grid: ~16 km
Updates: 6h
Horizon: 16d
Cell: 46.833, -124.167

NWS coastal raw forecast gridOfficial forecaster-produced digital guidanceUnranked · no comparable local archive test yet

Office: SEW
Grid: ~2.5 km
Updated: 2h ago
Cell: 46.859, -124.238

How the color works

Height and spacing together

Red follows the WFO Seattle Small Craft Advisory seas criterion used around Westport: seas at least 10 ft, or 7–9 ft when the period in seconds is shorter than the height in feet.

Below that line, Barcrosser uses transparent display bands: rough at ≥7 ft or H/T ≥.8; elevated at ≥4 ft or H/T ≥.5; otherwise lower energy. H/T is an empirical spacing signal, not a physical unit or safety verdict.

MFWAM global wave model: 3.5 ft / 7 s = 0.50 H/T

Westport nearshore is evaluated as open-water guidance. Bar-specific risk also depends on current phase, water depth, bathymetry, wind opposition, and the exact entrance channel. Outside WFO Seattle waters, use the responsible office’s local criteria; this remains a Westport-tuned comparison scale.