Alert archive / Michigan / Beach Hazards Statements in 2021
Beach Hazards Statement 15, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this beach hazards statement at Aug 5, 2021, 3:19 PM EDT for 4 counties in Michigan. It took effect at Aug 6, 2021, 8:00 AM EDT. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Aug 5, 2021, 3:19 PM EDT (19:19 UTC)
- In effect from
- Aug 6, 2021, 8:00 AM EDT
- Expired
- Aug 6, 2021, 8:00 PM EDT
- In force
- 12 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 19:20 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 12:00Z, 7.3 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
- 32 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 1344 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- -20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
606 WHUS43 KGRR 051919 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 319 PM EDT Thu Aug 5 2021 MIZ037-043-050-056-060330- /O.NEW.KGRR.BH.S.0015.210806T1200Z-210807T0000Z/ Mason-Oceana-Muskegon-Ottawa- 319 PM EDT Thu Aug 5 2021 ...BEACH HAZARDS STATEMENT IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY EVENING... * 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 Friday morning through Friday evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...Waves will be building to 3 to 5 feet. Grand Haven and Pere Marquette State Parks will be particularly dangerous due to the south flow. 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. && $$
3 follow-up statements
468 WHUS43 KGRR 060146 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 946 PM EDT Thu Aug 5 2021 MIZ037-043-050-056-061000- /O.CON.KGRR.BH.S.0015.210806T1200Z-210807T0000Z/ Mason-Oceana-Muskegon-Ottawa- 946 PM EDT Thu Aug 5 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 8 AM EDT FRIDAY THROUGH FRIDAY EVENING... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon and Ottawa counties. * WHEN...From Friday morning through Friday evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...Waves will be building to 3 to 5 feet. Grand Haven and Pere Marquette State Parks will be particularly dangerous due to the south flow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures. && $$ wdm
256 WHUS43 KGRR 060707 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 307 AM EDT Fri Aug 6 2021 MIZ037-043-050-056-061515- /O.CON.KGRR.BH.S.0015.210806T1200Z-210807T0000Z/ Mason-Oceana-Muskegon-Ottawa- 307 AM EDT Fri Aug 6 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS EVENING... * 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 this morning through this evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...Waves will be building to 3 to 5 feet. Grand Haven and Pere Marquette State Parks will be particularly dangerous due to the south flow. 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. && $$ Laurens
185 WHUS43 KGRR 061940 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 340 PM EDT Fri Aug 6 2021 MIZ037-043-050-056-070000- /O.CON.KGRR.BH.S.0015.000000T0000Z-210807T0000Z/ Mason-Oceana-Muskegon-Ottawa- 340 PM EDT Fri Aug 6 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon and Ottawa counties. * WHEN...From this morning through this evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures. && $$
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 3:19 PM EDT | Small Craft Advisory | GRR | 29 hr |
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.