Alert archive / Michigan / Beach Hazards Statements in 2021
Beach Hazards Statement 23, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this beach hazards statement at Sep 10, 2021, 3:53 AM EDT for 5 counties in Michigan. It took effect at Sep 11, 2021, 6:00 AM EDT. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Sep 10, 2021, 3:53 AM EDT (07:53 UTC)
- In effect from
- Sep 11, 2021, 6:00 AM EDT
- Expired
- Sep 11, 2021, 8:55 PM EDT
- In force
- 15 hr
- Issued by
- NWS Grand Rapids, MI
Counties Allegan County, MI, Mason County, MI, Muskegon County, MI, Oceana County, MI, Ottawa County, MI
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 7.9 hours before the alert went out and 202 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
- 27 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 1651 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
404 WHUS43 KGRR 100753 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 353 AM EDT Fri Sep 10 2021 MIZ037-043-050-056-064-101600- /O.NEW.KGRR.BH.S.0023.210911T1000Z-210912T0800Z/ Mason-Oceana-Muskegon-Ottawa-Allegan- 353 AM EDT Fri Sep 10 2021 ...BEACH HAZARDS STATEMENT IN EFFECT FROM SATURDAY MORNING THROUGH LATE SATURDAY NIGHT... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon, Ottawa and Allegan counties. * WHEN...From Saturday morning through late Saturday night. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...The south sides of piers will be especially dangerous. 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. && $$
7 follow-up statements
321 WHUS43 KGRR 101624 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 1224 PM EDT Fri Sep 10 2021 MIZ037-043-050-056-064-110030- /O.CON.KGRR.BH.S.0023.210911T1000Z-210912T0800Z/ Mason-Oceana-Muskegon-Ottawa-Allegan- 1224 PM EDT Fri Sep 10 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH LATE SATURDAY NIGHT... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon, Ottawa and Allegan counties. * WHEN...From Saturday morning through late Saturday night. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...Winds and waves will be on the increase late tonight. Waves will be in the 3 to 6 foot range the entire beach day on Saturday. South sides of south piers...such as Pere Marquette Park in Muskegon and Grand Haven State Park will be especially dangerous places to swim. Dangerous waves and currents will continue into Saturday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures. && $$ DUKE
391 WHUS43 KGRR 101948 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 348 PM EDT Fri Sep 10 2021 MIZ037-043-050-056-064-110400- /O.CON.KGRR.BH.S.0023.210911T1000Z-210912T0800Z/ Mason-Oceana-Muskegon-Ottawa-Allegan- 348 PM EDT Fri Sep 10 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH LATE SATURDAY NIGHT... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon, Ottawa and Allegan counties. * WHEN...From Saturday morning through late Saturday night. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...Winds and waves will be on the increase late tonight. Waves will be in the 3 to 6 foot range the entire beach day on Saturday. South sides of south piers... such as Pere Marquette Park in Muskegon and Grand Haven State Park will be especially dangerous places to swim. Dangerous waves and currents will continue into Saturday night. 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. && $$
362 WHUS43 KGRR 110307 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 1107 PM EDT Fri Sep 10 2021 MIZ037-043-050-056-064-111115- /O.CON.KGRR.BH.S.0023.210911T1000Z-210912T0800Z/ Mason-Oceana-Muskegon-Ottawa-Allegan- 1107 PM EDT Fri Sep 10 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 6 AM EDT SATURDAY THROUGH LATE SATURDAY NIGHT... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon, Ottawa and Allegan counties. * WHEN...From Saturday morning through late Saturday night. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...South sides of south piers... such as Pere Marquette Park in Muskegon and Grand Haven State Park will be especially dangerous places to swim. Dangerous waves and currents will continue into Saturday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures. && $$
581 WHUS43 KGRR 110731 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 331 AM EDT Sat Sep 11 2021 MIZ037-043-050-056-064-111545- /O.CON.KGRR.BH.S.0023.210911T1000Z-210912T0800Z/ Mason-Oceana-Muskegon-Ottawa-Allegan- 331 AM EDT Sat Sep 11 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, Ottawa and Allegan counties. * WHEN...From 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... such as Pere Marquette Park in Muskegon and Grand Haven State Park will be especially dangerous places to swim. Dangerous waves and currents will continue into tonight. 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. && $$
942 WHUS43 KGRR 111428 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 1028 AM EDT Sat Sep 11 2021 MIZ037-043-050-056-064-112230- /O.CON.KGRR.BH.S.0023.000000T0000Z-210912T0800Z/ Mason-Oceana-Muskegon-Ottawa-Allegan- 1028 AM EDT Sat Sep 11 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE TONIGHT... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon, Ottawa and Allegan counties. * WHEN...Through late tonight. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...South sides of south piers... such as Pere Marquette Park in Muskegon and Grand Haven State Park will be especially dangerous places to swim. Dangerous waves and currents will continue into tonight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures. && WDM $$
937 WHUS43 KGRR 111938 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 338 PM EDT Sat Sep 11 2021 MIZ037-043-050-056-064-120345- /O.CON.KGRR.BH.S.0023.000000T0000Z-210912T0800Z/ Mason-Oceana-Muskegon-Ottawa-Allegan- 338 PM EDT Sat Sep 11 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE TONIGHT... * WHAT...High wave action, strong currents, and dangerous swimming conditions will continue. Piers will continue to be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon, Ottawa and Allegan 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... such as Pere Marquette Park in Muskegon and Grand Haven State Park will be especially dangerous places to swim. Dangerous waves and currents will continue into tonight. 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. && $$ wdm
946 WHUS43 KGRR 120055 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 855 PM EDT Sat Sep 11 2021 MIZ037-043-050-056-064-120200- /O.CAN.KGRR.BH.S.0023.000000T0000Z-210912T0800Z/ Mason-Oceana-Muskegon-Ottawa-Allegan- 855 PM EDT Sat Sep 11 2021 ...BEACH HAZARDS STATEMENT IS CANCELLED... The waves have decreased and the advisory is cancelled. $$
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 3:51 AM EDT | Small Craft Advisory | GRR | 41 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.