Alert archive / Michigan / Beach Hazards Statements in 2021
Beach Hazards Statement 16, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this beach hazards statement at Aug 8, 2021, 4:05 AM EDT for 4 counties in Michigan. It took effect at Aug 8, 2021, 11:00 AM EDT. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Aug 8, 2021, 4:05 AM EDT (08:05 UTC)
- In effect from
- Aug 8, 2021, 11:00 AM EDT
- Expired
- Aug 9, 2021, 1:41 AM EDT
- In force
- 15 hr
- Issued by
- NWS Grand Rapids, MI
Counties Mason County, MI, Muskegon County, MI, Oceana County, MI, Ottawa County, MI
The radar
The Grand Rapids radar (KGRR), 87 km from the middle of the area, began a volume at 08:09 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 8.1 hours before the alert went out and 184 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 22 J/kg
- Mixed-layer CIN
- -122 J/kg
- Mixed-layer LCL
- 1055 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 275 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
128 WHUS43 KGRR 080805 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 405 AM EDT Sun Aug 8 2021 MIZ037-043-050-056-081615- /O.NEW.KGRR.BH.S.0016.210808T1500Z-210809T0600Z/ Mason-Oceana-Muskegon-Ottawa- 405 AM EDT Sun Aug 8 2021 ...BEACH HAZARDS STATEMENT IN EFFECT FROM 11 AM EDT THIS MORNING THROUGH LATE TONIGHT... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon and Ottawa counties. * WHEN...From 11 AM EDT this morning through late tonight. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...South sides of south piers will be most dangerous, such as at Grand Haven State Park and Pere Marquette Park in Muskegon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures. && $$
4 follow-up statements
070 WHUS43 KGRR 081424 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 1024 AM EDT Sun Aug 8 2021 MIZ037-043-050-056-082230- /O.CON.KGRR.BH.S.0016.210808T1500Z-210809T0600Z/ Mason-Oceana-Muskegon-Ottawa- 1024 AM EDT Sun Aug 8 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE TONIGHT... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon and Ottawa counties. * WHEN...From 11 AM EDT this morning through late tonight. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...South sides of south piers will be most dangerous, such as at Grand Haven State Park and Pere Marquette Park in Muskegon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures. && $$ wdm
736 WHUS43 KGRR 081946 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 346 PM EDT Sun Aug 8 2021 MIZ037-043-050-056-090400- /O.CON.KGRR.BH.S.0016.000000T0000Z-210809T0600Z/ Mason-Oceana-Muskegon-Ottawa- 346 PM EDT Sun Aug 8 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 2 AM EDT MONDAY... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon and Ottawa counties. * WHEN...through late tonight. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...South sides of south piers will be most dangerous, such as at Grand Haven State Park and Pere Marquette Park in Muskegon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures. && $$ wdm
729 WHUS43 KGRR 090227 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 1027 PM EDT Sun Aug 8 2021 MIZ037-043-050-056-090600- /O.CON.KGRR.BH.S.0016.000000T0000Z-210809T0600Z/ Mason-Oceana-Muskegon-Ottawa- 1027 PM EDT Sun Aug 8 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 2 AM EDT MONDAY... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon and Ottawa counties. * WHEN...Until 2 AM EDT Monday. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures. && $$
814 WHUS43 KGRR 090541 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 141 AM EDT Mon Aug 9 2021 MIZ037-043-050-056-090645- /O.CAN.KGRR.BH.S.0016.000000T0000Z-210809T0600Z/ Mason-Oceana-Muskegon-Ottawa- 141 AM EDT Mon Aug 9 2021 ...BEACH HAZARDS STATEMENT IS CANCELLED... Winds and waves have decreased and the statement is cancelled. $$
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 11:20 PM EDT | Special Marine Warning | GRR | 55 min | |
| Aug 7, 11:37 PM EDT | Special Weather Statement | GRR | Muskegon, Oceana, Ottawa | 83 min |
| Aug 8, 12:09 AM EDT | Special Weather Statement | GRR | Kent, Mecosta, Montcalm, Newaygo | 2 hr |
| Aug 8, 12:55 AM EDT | Special Marine Warning | GRR | 110 min |
Nearby
Beach Hazards Statements in Michigan, 2021Every beach hazards statement in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.