Alert archive / Michigan / Beach Hazards Statements in 2021
Beach Hazards Statement 12, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this beach hazards statement at Jul 23, 2021, 3:06 AM EDT for 4 counties in Michigan. It took effect at Jul 24, 2021, 8:00 AM EDT. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Jul 23, 2021, 3:06 AM EDT (07:06 UTC)
- In effect from
- Jul 24, 2021, 8:00 AM EDT
- Expired
- Jul 24, 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 07:08 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, 7.1 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
- 364 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 922 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
The text
As transmitted.
268 WHUS43 KGRR 230706 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 306 AM EDT Fri Jul 23 2021 MIZ037-043-050-056-231515- /O.NEW.KGRR.BH.S.0012.210724T1200Z-210725T0000Z/ Mason-Oceana-Muskegon-Ottawa- 306 AM EDT Fri Jul 23 2021 ...BEACH HAZARDS STATEMENT IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY 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 Saturday morning through Saturday evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...Stronger southwest winds will generate waves of 3 to 5 feet. The south sides of the piers at Grand Haven and Pere Marquette Parks will be particularly 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. && $$
4 follow-up statements
172 WHUS43 KGRR 231821 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 221 PM EDT Fri Jul 23 2021 MIZ037-043-050-056-240230- /O.CON.KGRR.BH.S.0012.210724T1200Z-210725T0000Z/ Mason-Oceana-Muskegon-Ottawa- 221 PM EDT Fri Jul 23 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon and Ottawa counties. * WHEN...From Saturday morning through Saturday evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...Southerly winds of 10 to 20 knots with higher gusts will build waves into the 3 to 4 foot range on Saturday. The most dangerous beach conditions on Saturday will occur on the south sides of south piers such as...Grand Haven State Park and Pere Marquette Park in Muskegon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures. && $$
125 WHUS43 KGRR 231957 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 357 PM EDT Fri Jul 23 2021 MIZ037-043-050-056-240400- /O.CON.KGRR.BH.S.0012.210724T1200Z-210725T0000Z/ Mason-Oceana-Muskegon-Ottawa- 357 PM EDT Fri Jul 23 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY 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 Saturday morning through Saturday evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...Southwest winds of 15 to 25 knots will build waves to 3 to 5 feet on Saturday. South sides of south piers will be the most dangerous places to swim, such as Pere Marquette Park in Muskegon and Grand Haven State Park. 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. && $$
727 WHUS43 KGRR 240733 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 333 AM EDT Sat Jul 24 2021 MIZ037-043-050-056-241545- /O.CON.KGRR.BH.S.0012.210724T1200Z-210725T0000Z/ Mason-Oceana-Muskegon-Ottawa- 333 AM EDT Sat Jul 24 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS EVENING... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon and Ottawa counties. * WHEN...From Saturday morning through Saturday evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...Southwest winds of 15 to 25 knots will build waves to 3 to 5 feet on Saturday. South sides of south piers will be the most dangerous places to swim, such as Pere Marquette Park in Muskegon and Grand Haven State Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures. && $$
711 WHUS43 KGRR 241534 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 1134 AM EDT Sat Jul 24 2021 MIZ037-043-050-056-250000- /O.CON.KGRR.BH.S.0012.000000T0000Z-210725T0000Z/ Mason-Oceana-Muskegon-Ottawa- 1134 AM EDT Sat Jul 24 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...Until 8 PM EDT this evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...Southwest winds of 15 to 25 knots will build waves to 3 to 5 feet today. South sides of south piers will be the most dangerous places to swim, such as Pere Marquette Park in Muskegon and Grand Haven State Park.. 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 |
|---|---|---|---|---|
| Jul 23, 2:59 AM EDT | Small Craft Advisory | GRR | 41 hr | |
| Jul 23, 5:06 AM EDT | Areal Flood Advisory | GRR | Muskegon | 5 hr |
| Jul 23, 5:09 AM EDT | Areal Flood Advisory | GRR | Kent | 5 hr |
| Jul 23, 5:55 AM EDT | Areal Flood Advisory | GRR | Ottawa | 4 hr |
| Jul 23, 7:12 AM EDT | Areal Flood Advisory | GRR | Barry | 3 hr |
| Jul 23, 3:53 PM EDT | Marine Dense Fog Advisory | GRR | 26 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.