Alert archive / Michigan / Beach Hazards Statements in 2021
Beach Hazards Statement 26, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this beach hazards statement at Sep 17, 2021, 6:47 AM EDT for Mason County, Michigan. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Sep 17, 2021, 6:47 AM EDT (10:47 UTC)
- Expired
- Sep 17, 2021, 8:00 PM EDT
- In force
- 13 hr
- Issued by
- NWS Grand Rapids, MI
County Mason County, MI
The radar
The Grand Rapids radar (KGRR), 138 km from the middle of the area, began a volume at 10:48 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, 10.8 hours before the alert went out and 146 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1604 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 161 m²/s²
- 0-3 km storm-relative helicity
- 285 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
550 WHUS43 KGRR 171047 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 647 AM EDT Fri Sep 17 2021 MIZ037-171900- /O.NEW.KGRR.BH.S.0026.210917T1047Z-210917T2100Z/ Mason- 647 AM EDT Fri Sep 17 2021 ...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason county. * WHEN...Until 5 PM EDT this afternoon. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...South winds of 15 to 25 knots will cause the south sides of south piers to be especially dangerous places to swim today. 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. && $$ wdm
3 follow-up statements
705 WHUS43 KGRR 171900 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 300 PM EDT Fri Sep 17 2021 MIZ037-172100- /O.CON.KGRR.BH.S.0026.000000T0000Z-210917T2100Z/ Mason- 300 PM EDT Fri Sep 17 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... * WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason county. * WHEN...Until 5 PM EDT this afternoon. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions and do not venture out on piers. Please check with your local authorities on potential beach closures. && $$
952 WHUS43 KGRR 172008 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 408 PM EDT Fri Sep 17 2021 MIZ037-180000- /O.EXT.KGRR.BH.S.0026.000000T0000Z-210918T0000Z/ Mason- 408 PM EDT Fri Sep 17 2021 ...BEACH HAZARDS STATEMENT NOW 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 county. * WHEN...Until 8 PM EDT 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. && $$
364 WHUS43 KGRR 172355 CFWGRR Coastal Hazard Message National Weather Service Grand Rapids MI 755 PM EDT Fri Sep 17 2021 MIZ037-180100- /O.EXP.KGRR.BH.S.0026.000000T0000Z-210918T0000Z/ Mason- 755 PM EDT Fri Sep 17 2021 ...BEACH HAZARDS STATEMENT WILL EXPIRE AT 8 PM EDT THIS EVENING... The waves will continue to slowly diminish through evening. $$
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 6:44 AM EDT | Small Craft Advisory | GRR | 13 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.