The Dexes / Coastal Flood, High Surf & Storm Surge / 925726
Eventdex · Coastal Flood, High Surf & Storm Surge
COASTAL CAMERON
925726
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| Event typeevent_type | Storm Surge/Tide |
|---|---|
| NOAA NCEI event IDncei_event_id | 925,726 |
| Episode IDepisode_id | 153,565 |
| Begin UTCbegin_utc | 2020-10-09T02:00:00+00:00 |
| End UTCend_utc | 2020-10-09T15:00:00+00:00 |
| Statestate | TEXAS |
| County/zone typecz_type | Z |
| County/zone namecz_name | COASTAL CAMERON |
| Deaths directdeaths_direct | 0 |
| Deaths indirectdeaths_indirect | 0 |
| Injuries directinjuries_direct | 0 |
| Injuries indirectinjuries_indirect | 0 |
| Damage cropsdamage_crops | 0.00K |
| Weather forecast office sourcewfo_source | NWS Storm Survey |
| Episode narrativeepisode_narrative | As Hurricane Delta moved northward across the Gulf of Mexico in early October, outgoing swell propagated into the lower Texas coastal waters on October 8th through the 10th. This swell was powerful enough to push water into the dunes across South Padre Island around high tide, which occurred at 12:11 AM CDT on the 8th, 1:15 AM CDT on the 9th, and 2:08 AM CDT on the 10th. The most significant erosion and overwash occurred during the pre-dawn hours of October 9th, as Delta passed directly over a NOAA buoy around 200 miles east of South Padre Island at around 1150 PM on October 8th. However, the highest *tide* level that was reported was 2.38 feet above Mean Higher-High Water (MHHW; or the level above normally dry ground at the shoreline) a day later at 3:42 AM CDT on the 10th. Levels remained above 1.25 feet MHHW for several hours surrounding the occurrence of high tide on the evenings of October 7th through the 10th. This activity was enough to cause some coastal erosion, with the more significant flooding and erosion occurring on the 9th, with additional run-up and lighter erosion on the 10th. ||Farther up the coast, similar wave action and minor coastal flooding was likely - but there were no comparative measurements based on MHHW. |
| Event narrativeevent_narrative | The passage of Hurricane Delta about 200 miles east of South Padre Island at around midnight on October 9th produce peak sea heights of 35 feet just prior to the eye's arrival at 1140 PM CDT on the 8th. Swell periods of more than 12 seconds began during the late afternoon at the site, and propagated quickly to the Cameron County Beaches. Soon after the time of high tide (around 1:30 AM), tide levels reached 2.12 feet above normally dry ground at the foam/sand line (2:48 AM). The combination of strong wave push with these above predicted tides produced significant beach erosion and some likely property damage at public beach access point 5 (north of the City), unprotected by dunes or the sea wall. Visual inspection did show water had risen above previously calved dunes from Hurricane Laura and Tropical Storm Beta in late August and late September, respectively. Renourishment costs were unknown as of this writing, but likely to run above $5 million based on data from earlier erosion from Hurricane Laura. |
| Yearyear | 2,020 |
Provenance
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Storage: spine