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The Dexes / Coastal Flood, High Surf & Storm Surge / 919203

Eventdex · Coastal Flood, High Surf & Storm Surge

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919203

The record

Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.

Event typeevent_typeStorm Surge/Tide
NOAA NCEI event IDncei_event_id919,203
Episode IDepisode_id152,604
Begin UTCbegin_utc2020-08-27T00:00:00+00:00
End UTCend_utc2020-08-27T17:45:00+00:00
StatestateTEXAS
County/zone typecz_typeZ
County/zone namecz_nameCOASTAL CAMERON
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Weather forecast office sourcewfo_sourceBuoy
Episode narrativeepisode_narrativeAs Hurricane Laura traversed northward across the Gulf of Mexico in late August, outgoing swell propagated into the lower Texas coastal waters on August 27th. This swell was powerful enough to push water into the dunes across South Padre Island around high tide, which occurred at 2:36 AM CDT. The highest level that was reported was 1.87 feet above Mean Higher-High Water (MHHW; or the level above normally dry ground at the shoreline) at 3:06 AM CDT, but levels remained above 1.25 feet MHHW from 11 PM CDT on August 26th until noon on August 27th. This activity was enough to cause some coastal erosion.||Farther up the coast, similar wave action and minor coastal flooding was likely - but there were no comparative measurements based on MHHW.
Event narrativeevent_narrativeAs swell from Hurricane Laura reached the lower Texas coast late on August 26th, the wave energy from this swell combined with high tide at 2:36 AM CDT on the 27th, allowed water levels to remain above 1.25 feet MHHW at the Brazos Santiago NDBC buoy from 11 PM on the 26th through noon on the 27th. The peak water level of 1.87 feet MHHW occurred at 3:06 AM CDT on the 27th. This activity caused some coastal erosion along the beaches of South Padre Island as high waves (up to 10+ feet in some cases) set-up and ran up into gaps in the dunes, into the dunes, or calved more robust dunes by erosion. Erosion began several hours prior to high tide due to wave action as Laura propagated its peak swell four to six hours prior to landfall.
Yearyear2,020

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COASTAL CAMERON — Coastal Flood, High Surf & Storm Surge — TerraPulse