The Dexes / Coastal Flood, High Surf & Storm Surge / 919803
Eventdex · Coastal Flood, High Surf & Storm Surge
BERRIEN
919803
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| Event typeevent_type | Seiche |
|---|---|
| NOAA NCEI event IDncei_event_id | 919,803 |
| Episode IDepisode_id | 152,454 |
| Begin UTCbegin_utc | 2020-08-10T22:00:00+00:00 |
| End UTCend_utc | 2020-08-11T09:00:00+00:00 |
| Statestate | MICHIGAN |
| County/zone typecz_type | Z |
| County/zone namecz_name | BERRIEN |
| 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 | Emergency Manager |
| Episode narrativeepisode_narrative | Convectively enhanced vorticity max lead to initiation of storms overnight Sunday across southern South Dakota. These initial storms grew upscale given concurrent downstream destabilization through northeast Nebraska and northwest Iowa. Widespread 80-100 mph winds developed through central/eastern Iowa as this derecho matured. Northern bookend and advection wing forcing led to some supercell structures across northern Illinois/southwest Wisconsin. Northern bookend turned northeast as it moved across Lake Michigan and tracked into western Michigan. As this occurred, attendant post convective wake low weakened as it crossed the lake. Thus the local area did not experience the 80 to 100 mph winds that N IL/E IA experienced. However the resultant slowing and breakup of the line as it moved across northwest Indiana/SW Michigan, yielded a LEWP and subsequent multiple small scale circulations developing along the line. These meso-vortices were associated with pockets of enhanced wind damage and brief tornado occurrences. |
| Event narrativeevent_narrative | The initial gust front passed the Cook Buoy (45026) near Stevensville, MI around 5:55 pm when waves were reportedly one foot. By 6:20 pm, waves had climbed to four feet and a meteotsunami was reported by an off-duty NWS employee who was at Lion���s Park Beach. Water levels rose approximately one and one half foot above the mean levels by that time, and flooding was reported along Lion���s Park Drive through the evening. Wave heights at the Cook Buoy peaked at around five feet at 8:40 pm. ||According to the Berrien County EMA, there was lakeshore flooding also reported in New Buffalo, MI, which lasted into the late evening hours. A seiche could be seen at various water level gauges across Lake Michigan into the next day (Tuesday August 11th, 2020), with the most extreme fluctuations extending from shortly after the storm passed until about 5 am EDT. Lesser fluctuations of up to one foot continued through around 10 am EDT. ||No specific damage amounts were noted as near record high water levels and periodic high wave action continue to cause extensive erosion. |
| Yearyear | 2,020 |
Provenance
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Storage: spine