Alert archive / Michigan / Beach Hazards Statements in 2017
Beach Hazards Statement 8, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this beach hazards statement at Jul 14, 2017, 7:43 PM EDT for Allegan County, Ottawa County, Van Buren County, Michigan. It took effect at Jul 14, 2017, 8:00 PM EDT. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 14, 2017, 7:43 PM EDT (23:43 UTC)
- In effect from
- Jul 14, 2017, 8:00 PM EDT
- Expired
- Jul 14, 2017, 11:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS Grand Rapids, MI
Counties Allegan County, MI, Ottawa County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 58 km from the middle of the area, began a volume at 23:44 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
Detroit, MI (KDTX), launched 12:00Z, 11.7 hours before the alert went out and 221 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
- 4 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 737 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- -27 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
232 WHUS43 KGRR 142343 CFWGRR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE GRAND RAPIDS MI 743 PM EDT FRI JUL 14 2017 MIZ056-064-071-150300- /O.NEW.KGRR.BH.S.0008.170715T0000Z-170715T0300Z/ OTTAWA-ALLEGAN-VAN BUREN- 743 PM EDT FRI JUL 14 2017 ...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 11 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A BEACH HAZARDS STATEMENT...WHICH IS IN EFFECT UNTIL 11 PM EDT THIS EVENING. * HIGH WAVE ACTION... STRONG CURRENTS AND DANGEROUS SWIMMING CONDITIONS EXPECTED. * STRONG STRUCTURAL CURRENTS EXPECTED. * STRONG LONGSHORE CURRENTS EXPECTED. * RIP CURRENTS POSSIBLE. * LOCATION...BEACHES FROM ST. JOSEPH TO GRAND HAVEN BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS INCLUDE... NORTH BEACH IN SOUTH HAVEN... HOLLAND STATE PARK... * OVERVIEW/POTENTIAL IMPACTS...NORTH WINDS WILL KEEP THE WAVES RUNNING AROUND 4 FEET THROUGH 10 PM...BUT THEY WILL DIMINISH LATER THIS EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... HIGH WAVE ACTION MAKES SWIMMING DIFFICULT AND CAN TIRE EVEN A STRONG SWIMMER QUICKLY. STRUCTURAL CURRENTS FORM ALONG PIERS WHERE LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE. STRUCTURAL CURRENTS CAN SWEEP YOU OUT INTO DEEPER WATER ALONG THE PIER STRUCTURE. A LONGSHORE CURRENT IS A LAKE CURRENT THAT MOVES PARALLEL TO SHORE. LONGSHORE CURRENTS CAN BE STRONG ENOUGH TO PREVENT SWIMMERS FROM BEING ABLE TO KEEP THEIR FEET ON THE BOTTOM... MAKING IT DIFFICULT TO RETURN TO SHORE. RIP CURRENTS ARE POWERFUL CHANNELS OF WATER FLOWING QUICKLY AWAY FROM SHORE...WHICH OCCUR MOST OFTEN AT LOW SPOTS OR BREAKS IN SANDBARS. RIP CURRENTS CAN SWEEP YOU INTO DEEPER WATER. && $$ WEATHER.GOV/GRR
1 follow-up statement
883 WHUS43 KGRR 150313 CFWGRR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1113 PM EDT FRI JUL 14 2017 MIZ056-064-071-150415- /O.EXP.KGRR.BH.S.0008.000000T0000Z-170715T0300Z/ OTTAWA-ALLEGAN-VAN BUREN- 1113 PM EDT FRI JUL 14 2017 ...BEACH HAZARDS STATEMENT HAS EXPIRED... THE WAVES HAVE FALLEN TO UNDER 4 FEET...LIMITING THE RISKS. AS A RESULT THE HAZARD WAS ALLOWED TO EXPIRE. $$ WEATHER.GOV/GRR
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 7:39 PM EDT | Small Craft Advisory | GRR | 3 hr |
Nearby
Beach Hazards Statements in Michigan, 2017Every beach hazards statement in 2017
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.