Alert archive / Michigan / Beach Hazards Statements in 2015

Beach Hazards Statement 8, NWS Grand Rapids, MI

July 1, 2015Mason County, Oceana County, Michigan

NWS Grand Rapids, MI issued this beach hazards statement at Jul 1, 2015, 10:15 AM EDT for Mason County, Oceana County, Michigan. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Jul 1, 2015, 10:15 AM EDT (14:15 UTC)
Expired: Jul 1, 2015, 3:16 PM EDT
In force: 5 hr
Issued by: NWS Grand Rapids, MI

Counties Mason County, MI, Oceana County, MI

The radar

The Grand Rapids radar (KGRR), 123 km from the middle of the area, began a volume at 14:21 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, 2.3 hours before the alert went out and 156 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 773 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: -2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

784 
WHUS43 KGRR 011415
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1015 AM EDT WED JUL 1 2015

MIZ037-043-012000-
/O.NEW.KGRR.BH.S.0008.150701T1415Z-150701T2000Z/
MASON-OCEANA-
1015 AM EDT WED JUL 1 2015

...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A BEACH
HAZARDS STATEMENT FOR DANGEROUS SWIMMING CONDITIONS...WHICH IS IN
EFFECT UNTIL 4 PM EDT THIS AFTERNOON. 

* HIGH WAVE ACTION... STRONG CURRENTS AND DANGEROUS SWIMMING 
  CONDITIONS EXPECTED.

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS EXPECTED.

* LOCATION...BEACHES FROM WHITEHALL TO MANISTEE.

* BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS TODAY
  INCLUDE... MEARS STATE PARK IN PENTWATER... STEARNS PARK IN
  LUDINGTON.

* OVERVIEW/POTENTIAL IMPACTS...NORTH TO NORTHWEST WINDS OF 15 TO
  25 MPH THIS MORNING ARE CREATING WAVES AS HIGH AS 3 TO 5 FEET.
  HIGH WAVES AND CURRENTS RUNNING ALONG THE SHORELINE WILL KEEP
  POTENTIALLY DANGEROUS CONDITIONS IN THE WATERS THIS MORNING. THE
  THREAT WILL DIMINISH THIS AFTERNOON AS WINDS ARE EXPECTED TO
  GRADUALLY DIMINISH ALONG WITH THE WAVES. 

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.

&&

$$

NJJ

WEATHER.GOV/GRR

1 follow-up statement

495 
WHUS43 KGRR 011916
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
316 PM EDT WED JUL 1 2015

MIZ037-043-012030-
/O.CAN.KGRR.BH.S.0008.000000T0000Z-150701T2000Z/
MASON-OCEANA-
316 PM EDT WED JUL 1 2015

...BEACH HAZARDS STATEMENT IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS CANCELLED THE
BEACH HAZARDS STATEMENT. 

THE THREAT OF SWIM HAZARDS HAS DIMINISHED SOME LATE THIS
AFTERNOON...AND WILL CONTINUE TO DIMINISH THIS EVENING. A MODERATE
RISK OF SWIM HAZARDS WILL DROP TO A LOW RISK THIS EVENING.

$$

NJJ

WEATHER.GOV/GRR

The office that day

Everything else NWS Grand Rapids, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 11:05 PM EDT	River Flood Advisory	GRR	Ingham	70 hr
Jul 1, 10:09 AM EDT	Small Craft Advisory	GRR		5 hr

Nearby

Beach Hazards Statements in Michigan, 2015 Every beach hazards statement in 2015

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.