Dye Release Advisory for 18 Aug 0000Z to 19 Aug 0000Z, Issued on 17 Aug 2017, 5pm

The following figures show the MSEAS PE forecasts of horizontal velocities snapshots in a region covered by the HF-radar, ever hour, extracted out of the 200m simulation (with implicit 2-way nesting in a 600 m simulation). Also shown are the FTLE but in the full 200 m simulation domain.

As a reminder, 12:00Z = 08:00 EDT, i.e., local time is 4 hours behind Zulu time.

The MSEAS PE forecasts of horizontal velocities snapshots (velocity vectors overlaid on velocity magnitude) are shown every hour in a region covered by the HF-radar.

Hz200mN001/pe_vtot_20170818_1300Z_hfradar_axis.png

Hz200mN001/pe_vtot_20170818_1400Z_hfradar_axis.png

Hz200mN001/pe_vtot_20170818_1500Z_hfradar_axis.png

Hz200mN001/pe_vtot_20170818_1600Z_hfradar_axis.png

Hz200mN001/pe_vtot_20170818_1700Z_hfradar_axis.png

Hz200mN001/pe_vtot_20170818_1800Z_hfradar_axis.png

Hz200mN001/pe_vtot_20170818_1900Z_hfradar_axis.png

Hz200mN001/pe_vtot_20170818_2000Z_hfradar_axis.png

The FTLE computations are for a time window of 1, 3, or 6 hours for the forecast of 18 August 2017 to 19 August 2017. The window center shifts in 1 hour intervals. The flow maps were calculated using a PDE based approach by using 5th order spatial and 3rd order temporal schemes, and a novel composition based approach. As a reminder, 12:00Z = 08:00 EDT, i.e., local time is 4 hours behind Zulu time.

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