Alert archive / Michigan / Beach Hazards Statements in 2015

Beach Hazards Statement 18, NWS Grand Rapids, MI

August 18, 20156 counties in Michigan

NWS Grand Rapids, MI issued this beach hazards statement at Aug 18, 2015, 10:56 AM EDT for 6 counties in Michigan. It took effect at Aug 19, 2015, 8:00 AM EDT. It was in force for 44 hr.

The area

The counties it named.

The facts

Issued
Aug 18, 2015, 10:56 AM EDT (14:56 UTC)
In effect from
Aug 19, 2015, 8:00 AM EDT
Expired
Aug 21, 2015, 3:32 AM EDT
In force
44 hr
Issued by
NWS Grand Rapids, MI

Counties Allegan County, MI, Mason County, MI, Muskegon County, MI, Oceana County, MI, Ottawa County, MI, Van Buren County, MI

The radar

The Grand Rapids radar (KGRR), 60 km from the middle of the area, began a volume at 14:59 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, 2.9 hours before the alert went out and 214 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 12:00Z on 2015-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 363 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 12:00Z on 2015-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
363 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
535 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
77 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.

936 
WHUS43 KGRR 181456
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1056 AM EDT TUE AUG 18 2015

MIZ037-043-050-056-064-071-182300-
/O.NEW.KGRR.BH.S.0018.150819T1200Z-150821T0000Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
1056 AM EDT TUE AUG 18 2015

...BEACH HAZARDS STATEMENT IN EFFECT FROM WEDNESDAY MORNING
THROUGH THURSDAY EVENING...

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A BEACH
HAZARDS STATEMENT FOR DANGEROUS SWIMMING CONDITIONS...WHICH IS IN
EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY EVENING. 

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

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS EXPECTED.

* LOCATION...BEACHES FROM ST. JOSEPH TO MANISTEE.

BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS WEDNESDAY INCLUDE...

SOUTH BEACH IN SOUTH HAVEN... GRAND HAVEN STATE PARK... PERE
MARQUETTE PARK IN MUSKEGON.

* OVERVIEW/POTENTIAL IMPACTS...WAVES OF 3 TO 5 FEET WEDNESDAY
  AFTERNOON WILL BUILD TO 5 TO 9 FEET INTO THURSDAY MORNING. THESE
  WAVES WILL POSE A LIFE THREATENING SITUATION TO ANYONE ENTERING
  THE WATER ESPECIALLY WEDNESDAY NIGHT INTO THURSDAY AFTERNOON.

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
11 follow-up statements
574 
WHUS43 KGRR 181947
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
347 PM EDT TUE AUG 18 2015

MIZ037-043-050-056-064-071-190400-
/O.CON.KGRR.BH.S.0018.150819T1200Z-150821T0000Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
347 PM EDT TUE AUG 18 2015

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM WEDNESDAY
MORNING THROUGH THURSDAY EVENING...

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

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS EXPECTED.

* LOCATION...BEACHES FROM ST. JOSEPH TO MANISTEE.

BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS WEDNESDAY
INCLUDE...

SOUTH BEACH IN SOUTH HAVEN... GRAND HAVEN STATE PARK... PERE
MARQUETTE PARK IN MUSKEGON.

* OVERVIEW/POTENTIAL IMPACTS...WAVES OF 3 TO 5 FEET WEDNESDAY 
  AFTERNOON WILL BUILD TO 5 TO 9 FEET INTO THURSDAY MORNING. 
  THESE WAVES WILL POSE A LIFE THREATENING SITUATION TO ANYONE 
  ENTERING THE WATER ESPECIALLY WEDNESDAY NIGHT INTO THURSDAY 
  AFTERNOON. 

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
122 
WHUS43 KGRR 190251
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1051 PM EDT TUE AUG 18 2015

MIZ037-043-050-056-064-071-191100-
/O.CON.KGRR.BH.S.0018.150819T1200Z-150821T0000Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
1051 PM EDT TUE AUG 18 2015

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 8 AM EDT
WEDNESDAY THROUGH THURSDAY EVENING...

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

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS EXPECTED.

* LOCATION...BEACHES FROM ST. JOSEPH TO MANISTEE.

BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS WEDNESDAY
INCLUDE...

SOUTH BEACH IN SOUTH HAVEN...
GRAND HAVEN STATE PARK...
PERE MARQUETTE PARK IN MUSKEGON.

* OVERVIEW/POTENTIAL IMPACTS...WAVES OF 3 TO 6 FEET WEDNESDAY WILL
  BUILD TO 5 TO 9 FEET THURSDAY. THESE WAVES WILL POSE A LIFE
  THREATENING SITUATION TO ANYONE ENTERING THE WATER. WINDS WILL
  BE OUT OF THE SOUTHWEST TO 30 KNOTS ON WEDNESDAY AND OUT OF THE
  WEST TO 30 KNOTS ON THURSDAY.

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
254 
WHUS43 KGRR 190808
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
408 AM EDT WED AUG 19 2015

MIZ037-043-050-056-064-071-191615-
/O.CON.KGRR.BH.S.0018.150819T1200Z-150821T0000Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
408 AM EDT WED AUG 19 2015

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 8 AM EDT THIS
MORNING THROUGH THURSDAY EVENING...

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

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS EXPECTED.

* LOCATION...BEACHES FROM ST. JOSEPH TO MANISTEE.

  BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS 
  TODAY INCLUDE...

  SOUTH BEACH IN SOUTH HAVEN... 
  GRAND HAVEN STATE PARK... 
  PERE MARQUETTE PARK IN MUSKEGON...

* OVERVIEW/POTENTIAL IMPACTS...WAVES OF 3 TO 6 FEET TODAY WILL
  BUILD TO 5 TO 9 FEET THURSDAY. THESE WAVES WILL POSE A LIFE
  THREATENING SITUATION TO ANYONE ENTERING THE WATER. WINDS WILL
  BE OUT OF THE SOUTHWEST TO 30 MPH ON WEDNESDAY AND OUT OF THE
  WEST TO 30 MPH ON THURSDAY.

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

DUKE
853 
WHUS43 KGRR 191451
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1051 AM EDT WED AUG 19 2015

MIZ037-043-050-056-064-071-192300-
/O.CON.KGRR.BH.S.0018.000000T0000Z-150821T0000Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
1051 AM EDT WED AUG 19 2015

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY
EVENING...

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

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS EXPECTED.

* LOCATION...BEACHES FROM ST. JOSEPH TO MANISTEE.

 BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS   TODAY
INCLUDE...

 SOUTH BEACH IN SOUTH HAVEN...   GRAND HAVEN STATE PARK...  
PERE MARQUETTE PARK IN MUSKEGON...

* OVERVIEW/POTENTIAL IMPACTS...WAVES OF 4 TO 7 FEET TODAY WILL
  BUILD TO 5 TO 9 FEET THURSDAY. THESE WAVES WILL POSE A LIFE
  THREATENING SITUATION TO ANYONE ENTERING THE WATER. WINDS WILL
  BE OUT OF THE SOUTHWEST TO 30 MPH THIS AFTERNOON INTO TONIGHT
  THEN OUT OF THE WEST TO 30 MPH ON THURSDAY.

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.

&&

$$

WDM

WEATHER.GOV/GRR
772 
WHUS43 KGRR 191947
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
347 PM EDT WED AUG 19 2015

MIZ037-043-050-056-064-071-200400-
/O.CON.KGRR.BH.S.0018.000000T0000Z-150821T0000Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
347 PM EDT WED AUG 19 2015

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY
EVENING...

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

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS EXPECTED.

* LOCATION...BEACHES FROM ST. JOSEPH TO MANISTEE.

BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS   TODAY INCLUDE...

SOUTH BEACH IN SOUTH HAVEN...   GRAND HAVEN STATE PARK... PERE
MARQUETTE PARK IN MUSKEGON...

* OVERVIEW/POTENTIAL IMPACTS...WAVES OF 4 TO 6 FEET TONIGHT WILL
  BUILD TO 5 TO 9 FEET THURSDAY. THESE WAVES WILL POSE A LIFE
  THREATENING SITUATION TO ANYONE ENTERING THE WATER. WINDS WILL
  BE OUT OF THE SOUTHWEST 20 TO 30 MPH TONIGHT THEN OUT OF THE
  WEST TO 30 TO 35 MPH ON THURSDAY.

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.

&&

$$

WDM

WEATHER.GOV/GRR
853 
WHUS43 KGRR 200209
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1009 PM EDT WED AUG 19 2015

MIZ037-043-050-056-064-071-201015-
/O.CON.KGRR.BH.S.0018.000000T0000Z-150821T0000Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
1009 PM EDT WED AUG 19 2015

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY
EVENING...

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

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS EXPECTED.

* LOCATION...BEACHES FROM ST. JOSEPH TO MANISTEE.

BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS INCLUDE...

SOUTH BEACH IN SOUTH HAVEN...
GRAND HAVEN STATE PARK...
PERE MARQUETTE PARK IN MUSKEGON...

* OVERVIEW/POTENTIAL IMPACTS...WAVES OF 3 TO 6 FEET TONIGHT WILL
  BUILD TO 5 TO 9 FEET THURSDAY. THESE WAVES WILL POSE A LIFE
  THREATENING SITUATION TO ANYONE ENTERING THE WATER. WINDS WILL
  BE OUT OF THE SOUTHWEST 20 TO 30 MPH TONIGHT THEN OUT OF THE
  WEST TO 30 TO 35 MPH ON THURSDAY.

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
427 
WHUS43 KGRR 200806
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
406 AM EDT THU AUG 20 2015

MIZ037-043-050-056-064-071-201615-
/O.EXT.KGRR.BH.S.0018.000000T0000Z-150821T0900Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
406 AM EDT THU AUG 20 2015

...BEACH HAZARDS STATEMENT NOW IN EFFECT THROUGH LATE TONIGHT...

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

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS EXPECTED.

* LOCATION...BEACHES FROM ST. JOSEPH TO MANISTEE.

  BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS INCLUDE...

  SOUTH BEACH IN SOUTH HAVEN... 
  GRAND HAVEN STATE PARK... 
  PERE MARQUETTE PARK IN MUSKEGON...

* OVERVIEW/POTENTIAL IMPACTS...WAVES OF 5 TO 9 FEET ARE EXPECTED
  TODAY. THESE WAVES WILL POSE A LIFE THREATENING SITUATION TO
  ANYONE ENTERING THE WATER. WEST TO SOUTHWEST WINDS OF 20 TO 30
  MPH ARE EXPECTED TODAY...GRADUALLY SUBSIDING THIS EVENING AND
  OVERNIGHT. WAVES WILL SUBSIDE TO 3 TO 6 FEET TOWARDS MIDNIGHT
  AND TO 2 TO 4 FEET TOWARDS FRIDAY MORNING. 

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

DUKE
117 
WHUS43 KGRR 201333
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
933 AM EDT THU AUG 20 2015

MIZ037-043-050-056-064-071-202145-
/O.CON.KGRR.BH.S.0018.000000T0000Z-150821T0900Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
933 AM EDT THU AUG 20 2015

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE
TONIGHT...

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

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS EXPECTED.

* LOCATION...BEACHES FROM ST. JOSEPH TO MANISTEE.

 BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS INCLUDE...

 SOUTH BEACH IN SOUTH HAVEN...   GRAND HAVEN STATE PARK...  
PERE MARQUETTE PARK IN MUSKEGON...

* OVERVIEW/POTENTIAL IMPACTS...WAVES OF 5 TO 9 FEET ARE EXPECTED
  THROUGH THIS AFTERNOON. THESE WAVES WILL POSE A LIFE
  THREATENING SITUATION TO ANYONE ENTERING THE WATER. WEST TO WEST
  WINDS OF 20 TO 30 MPH ARE EXPECTED TODAY...BECOMING NORTHWEST
  AND GRADUALLY SUBSIDING THIS EVENING AND OVERNIGHT. WAVES WILL
  SUBSIDE TO 3 TO 6 FEET TOWARDS MIDNIGHT AND TO 2 TO 4 FEET
  TOWARDS FRIDAY MORNING.

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.

&&

$$

WDM

WEATHER.GOV/GRR
806 
WHUS43 KGRR 201932
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
332 PM EDT THU AUG 20 2015

MIZ037-043-050-056-064-071-210345-
/O.CON.KGRR.BH.S.0018.000000T0000Z-150821T0900Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
332 PM EDT THU AUG 20 2015

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE
TONIGHT...

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

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS EXPECTED.

* LOCATION...BEACHES FROM ST. JOSEPH TO MANISTEE.

BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS INCLUDE...

SOUTH BEACH IN SOUTH HAVEN...   GRAND HAVEN STATE PARK... PERE
MARQUETTE PARK IN MUSKEGON...

* OVERVIEW/POTENTIAL IMPACTS...WAVES OF 4 TO 7 FEET ARE EXPECTED
  INTO THIS EVENING BEFORE SUBSIDING TO 3 TO 5 FEET AFTER DARK.
  THESE WAVES WILL POSE A LIFE THREATENING SITUATION TO ANYONE
  ENTERING THE WATER. WEST WINDS OF 20 TO 35 MPH WILL DECREASE TO
  20 TO 30 MPH BY LATE THIS EVENING AND 10 TO 20 MPH BY MORNING.

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.

&&

$$

WDM

WEATHER.GOV/GRR
147 
WHUS43 KGRR 210200
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1000 PM EDT THU AUG 20 2015

MIZ037-043-050-056-064-071-210900-
/O.CON.KGRR.BH.S.0018.000000T0000Z-150821T0900Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
1000 PM EDT THU AUG 20 2015

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 5 AM EDT
FRIDAY...

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

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS EXPECTED.

* LOCATION...BEACHES FROM ST. JOSEPH TO MANISTEE.

BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS INCLUDE...

SOUTH BEACH IN SOUTH HAVEN...   GRAND HAVEN STATE PARK... PERE
MARQUETTE PARK IN MUSKEGON...

* OVERVIEW/POTENTIAL IMPACTS...WAVES OF 3 TO 6 FEET WILL POSE A
  LIFE THREATENING SITUATION TO ANYONE ENTERING THE WATER. WEST
  WINDS OF 20 TO 30 MPH WILL DECREASE TO 10 TO 20 MPH BY MORNING.

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
785 
WHUS43 KGRR 210732
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
332 AM EDT FRI AUG 21 2015

MIZ037-043-050-056-064-071-210845-
/O.CAN.KGRR.BH.S.0018.000000T0000Z-150821T0900Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
332 AM EDT FRI AUG 21 2015

...BEACH HAZARDS STATEMENT IS CANCELLED...

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

WAVES HAVE BEEN SUBSIDING SINCE NIGHTFALL ON THURSDAY AND THE
THREAT TO SWIMMERS IS NO LONGER HIGH.

$$

DUKE

WEATHER.GOV/GRR

What forecasters said that day

The local office's own words before this beach hazards statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Rapids, MI wrote its last area forecast discussion before this beach hazards statement went out at Aug 18, 7:53 AM EDT, 3 hours 3 minutes earlier.

Area forecast discussion, Aug 18, 7:53 AM EDT, 3 hours 3 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
753 AM EDT TUE AUG 18 2015

LATEST UPDATE...
AVIATION

.SYNOPSIS...
ISSUED AT 328 AM EDT TUE AUG 18 2015

THE WARM AND HUMID CONDITIONS WILL CONTINUE INTO WEDNESDAY BEFORE A
COLD FRONT SWEEPS THROUGH DURING THE AFTERNOON AND EVENING. PERIODS
OF SHOWERS AND STORMS CAN BE EXPECTED TODAY THROUGH WEDNESDAY
EVENING. SEVERE WEATHER IS POSSIBLE ON WEDNESDAY ALONG AND AHEAD OF
THE COLD FRONT. COOLER AND DRIER AIR WILL SWEEP IN BEHIND THE FRONT
FOR THURSDAY AND FRIDAY.

&&

.SHORT TERM...(TODAY THROUGH THURSDAY)
ISSUED AT 328 AM EDT TUE AUG 18 2015

THINKING HAS NOT CHANGED CONSIDERABLE IN THE SHORT TERM AS COMPARED
TO THE PRIOR FORECAST. PERIODS OF SHOWERS AND STORMS CAN BE EXPECTED
THROUGH WEDNESDAY EVENING AS WE WILL BE POSITIONED IN THE WARM
SECTOR OF A STRENGTHENING...STRONG FOR MID SUMMER LOW PRESSURE
SYSTEM.

FEEL WE ARE LOOKING AT A ROUND OF SHOWERS AND STORMS MOVING THROUGH
THE FORECAST AREA TODAY AS A SHORTWAVE TRACKS THROUGH THE LOWER
GREAT LAKES. THE WAVE IS CURRENTLY TIED TO THE CONVECTION ACROSS
NORTHEAST ILLINOIS. THIS AREA OF PRECIP WILL SWEEP NORTHEAST ACROSS
THE FORECAST AREA TODAY. IT MAY TEND TO TRY TO WEAKEN A BIT THIS
MORNING AS INSTABILITY IS NOT ALL THAT GREAT...LESS THAN 1000 J/KG.
SOME OF IT GIVEN ITS ORGANIZATION THOUGH WILL PRESS INTO THE
SOUTHWEST CWA EARLY THIS MORNING. IT MAY TEND TO FLARE UP A BIT AS
WE APPROACH MIDDAY GIVEN MORNING HEATING AHEAD OF THE WAVE. THE
AFTERNOON MAY TEND TO TONE DOWN A BIT THEN AS THE SHORTWAVE INDUCES
SUBSIDENCE IN ITS WAKE.

TONIGHT...WE WILL LIKELY SEE A BIT OF A LULL IN THE ACTIVITY DURING
THE EVENING WITH SHOWERS AND STORMS THEN PRESSING IN OVERNIGHT FROM
THE WEST. SOME OF THE STORMS OVERNIGHT COULD BE ON THE STRONG SIDE
AS SHEAR WILL BE INCREASING AHEAD OF THE MAIN UPPER LOW. WIND WOULD
BE THE MAIN THREAT FROM STORMS TONIGHT.

FOCUS REMAINS ON THE THREAT FOR SEVERE WEATHER ON WEDNESDAY AS THE
SURFACE COLD FRONT SWEEPS IN. SPC HAS DOWNGRADED THE RISK ON
WEDNESDAY FROM SLIGHT TO MARGINAL. CANNOT ARGUE WITH THIS GIVEN THE
UNCERTAINTY IN REGARD TO INSTABILITY. MORNING SHOWERS AND STORMS
WILL LIKELY BE IN PLACE ALONG WITH EXTENSIVE CLOUD COVER.
DESTABILIZATION IN THE WAKE OF THIS ACTIVITY WILL BE THE ITEM TO
WATCH AS WE GO FORWARD. STILL A THREAT OF SEVERE GIVEN THE STRENGTH
OF THE SYSTEM. HEAVY RAINS ARE A THREAT AS WELL GIVEN PWATS SURGING
TO AROUND 2 INCHES.

CONDITIONS DRY OUT RAPIDLY FOR WEDNESDAY OVERNIGHT AND THURSDAY.
COULD SEE SOME ISOLATED SHOWERS ON THURSDAY WITH THE UPPER LOW
OVERHEAD. CURRENTLY HAVE THIS CONFINED TO CENTRAL LOWER.

.LONG TERM...(THURSDAY NIGHT THROUGH MONDAY)
ISSUED AT 328 AM EDT TUE AUG 18 2015

FAIR WEATHER AND WARMING TEMPERATURES SHOULD OCCUR BY FRIDAY. HIGH
PRESSURE IS PROGGED TO MOVE TO OUR EAST BY THE END OF THE WORK WEEK
WITH THE UPPER FLOW BECOMING MORE ZONAL.  THE WARMING TREND SHOULD
CONTINUE INTO THE WEEKEND AS DEEP SOUTHWEST FLOW DEVELOPS AS A
TROUGH IS CARVED OUT OVER THE ROCKIES.  I INCREASED HIGH TEMPS FOR
BOTH SATURDAY AND SUNDAY AS A RESULT.  ABOVE NORMAL TEMPS IN THE LOW
TO MID 80S SHOULD OCCUR BOTH SATURDAY AND SUNDAY.

THE NEXT CHANCE OF SHOWERS AND STORMS WILL COME SUNDAY FROM A COLD
FRONT THAT WILL EJECT OUT OF THE ROCKIES UPPER TROUGH.  VERY GOOD
AGREEMENT IN THE MODELS WITH THE TIMING OF THIS FRONT...COMING
THROUGH SUNDAY/SUNDAY NIGHT.  COOL...EVEN A TOUCH OF FALL...ARRIVES
FOR SUNDAY NIGHT/MONDAY BEHIND THIS FRONT.  H8 TEMPS DROP FROM ABOUT
16C ON SUNDAY TO AROUND 8C BY MONDAY...THIS SHOULD GIVE US HIGHS OF
ONLY 70 TO 75 FOR MONDAY.

&&

.AVIATION...(FOR THE 12Z TAFS THROUGH 12Z WEDNESDAY MORNING)
ISSUED AT 753 AM EDT TUE AUG 18 2015

SCATTERED SHOWERS AND A FEW THUNDERSTORMS WILL WORK THROUGH THE
TAF SITES THIS MORNING AND EARLY AFTERNOON. CEILINGS AND
ESPECIALLY VISIBILITIES MAY DIP INTO THE MVFR CATEGORY DURING THAT
TIME FRAME. FROM MID AFTERNOON ON...A FEW SHOWERS AND STORMS MAY
REMAIN...BUT IN GENERAL IT IS EXPECTED THAT THE ACTIVITY WILL BE
PUSHING OFF TO THE EAST. FOR THE MOST PART...EXPECTING VFR
WEATHER THIS AFTERNOON AND EVENING.

TONIGHT...A BAND OF SHOWERS AND STORMS WILL TRY TO PRESS IN FROM
THE WEST...AFTER 06Z. AT THIS POINT COVERED THIS THREAT WITH
VCTS...AS IT IS A LOWER CONFIDENCE EVENT. WINDS THE NEXT 24 HOURS
WILL BE SOUTHERLY AT 5-15 KNOTS.

&&

.MARINE...
ISSUED AT 328 AM EDT TUE AUG 18 2015

STRONG STORM SYSTEM LIFTING NORTHEAST ACROSS THE GREAT LAKES REGION
THE NEXT COUPLE DAYS WILL BRING LARGE WAVES AND FAIRLY STRONG WINDS
FOR THIS TIME OF YEAR. WE WILL NEED SMALL CRAFT ADVISORIES AND BEACH
HAZARDS STATEMENTS FOR THE WEDNESDAY-THURSDAY TIME FRAME. IT APPEARS
WAVES WILL PEAK IN THE 5-10 FOOT RANGE...WHICH ARE VERY LARGE FOR
THE SWIM SEASON. HAZARDOUS SWIMMING AND BOATING CONDITIONS CAN BE
EXPECTED WEDNESDAY THROUGH THURSDAY AT ALL LAKE MICHIGAN BEACHES
BETWEEN ST. JOE AND MANISTEE. WILL LIKELY ISSUE THE HEADLINES LATER
ON THIS SHIFT OR ON THE DAY SHIFT. AT THIS POINT ITS STILL OUT IN
THE THIRD PERIOD OF THE FORECAST. SOUTH TO SOUTHWEST WINDS TO 30
KNOTS ARE EXPECTED...WITH CONDITIONS FLIRTING WITH GALE FORCE AT
TIMES WEDNESDAY AFTERNOON.

&&

.HYDROLOGY...
ISSUED AT 325 PM EDT MON AUG 17 2015

WITH SEVERAL ROUNDS OF RAIN AND THUNDERSTORMS LIKELY THROUGH
WEDNESDAY... THERE ARE SOME HEAVY RAINFALL CONCERNS. DEEP
SOUTHWESTERLY FLOW AHEAD OF AN ORGANIZING MIDWEST LOW WILL TRANSPORT
PLENTY OF ATMOSPHERIC MOISTURE TOWARD OUR AREA. THUNDERSTORMS
TUESDAY AND WEDNESDAY COULD BE EFFICIENT RAINFALL PRODUCERS AS
PRECIPITABLE WATER VALUES REACH 1.5 TO 2.0 INCHES. THERE IS A GOOD
CHANCE THE ENTIRE AREA WILL SEE APPRECIABLE RAINFALL AMOUNTS... WITH
BASIN-AVERAGE VALUES AROUND AN INCH. IN REALITY... RAINFALL WILL NOT
BE DISTRIBUTED EVENLY... SO SOME LOCALITIES MAY SEE EXCESSIVE
RAINFALL AMOUNTS IF STORMS PERSIST.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
LM...NONE.
&&

SYNOPSIS...DUKE
SHORT TERM...DUKE
LONG TERM...JK
AVIATION...DUKE
HYDROLOGY...CAS
MARINE...DUKE
Hazardous weather outlook, Aug 18, 6:32 AM EDT, 4 hours 24 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
632 AM EDT TUE AUG 18 2015

MIZ037>040-043>046-050>052-056>059-064>067-071>074-191045-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
632 AM EDT TUE AUG 18 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE LIKELY BOTH TODAY AND TONIGHT. THE SEVERE
WEATHER THREAT IS LOW TODAY WITH LOCALLY HEAVY RAIN AND LIGHTNING
BEING THE MAIN THREATS. TONIGHT...THE STRONGEST STORMS WILL BE
CAPABLE OF WIND GUSTS TO 50 MPH...SMALL HAIL...LOCALLY HEAVY RAIN
AND LIGHTNING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS ARE LIKELY ON WEDNESDAY AS A STRONG COLD FRONT
SWEEPS ACROSS THE STATE. SEVERE WEATHER IS POSSIBLE WEDNESDAY
THROUGH THE EVENING HOURS. DAMAGING WINDS...HEAVY RAIN AND
LIGHTNING WILL BE A POSSIBILITY WITH THE STRONGER STORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE ON WEDNESDAY.

LMZ844>849-191045-
ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI-
HOLLAND TO GRAND HAVEN MI-GRAND HAVEN TO WHITEHALL MI-
WHITEHALL TO PENTWATER MI-PENTWATER TO MANISTEE MI-
632 AM EDT TUE AUG 18 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE LIKELY OVER LAKE MICHIGAN TODAY AND TONIGHT.
SEVERE WEATHER IS NOT EXPECTED TODAY...BUT STORMS TONIGHT MAY
CONTAIN WIND GUSTS IN EXCESS OF 35 KNOTS. MARINERS CAN ALSO EXPECT
LIGHTNING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

INCREASING SOUTH AND SOUTHWEST WINDS FROM WEDNESDAY INTO THURSDAY
WILL BUILD LARGE WAVES FOR MID SUMMER. WAVES WILL LIKELY BUILD
INTO THE 4 TO 8 FOOT RANGE MUCH OF THE WEDNESDAY THROUGH THURSDAY
TIME FRAME. WAVES WILL PEAK THURSDAY MORNING WITH SOME WAVES
AROUND 10 FEET POSSIBLE. WINDS AND WAVES OF THIS MAGNITUDE WILL
POSE A SIGNIFICANT HAZARD TO BOTH SWIMMERS AND BOATERS.

THUNDERSTORMS ARE LIKELY ON WEDNESDAY AS A STRONG COLD FRONT
SWEEPS ACROSS THE LAKE. SEVERE WEATHER IS POSSIBLE WEDNESDAY
THROUGH THE EVENING HOURS. WIND GUSTS IN EXCESS OF 40
KNOTS...HEAVY RAIN AND LIGHTNING WILL BE A POSSIBILITY WITH THE
STRONGER STORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE ON WEDNESDAY.

DUKE

In the hours before

Local storm report, Aug 18, 9:43 AM EDT, 1 hour 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
943 AM EDT TUE AUG 18 2015

...TIME...  ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
...DATE...  ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0650 AM     HEAVY RAIN       4 NNE PAW PAW           42.27N 85.86W
08/18/2015  M1.82 INCH       VAN BUREN          MI   COCORAHS

            24 HOUR TOTAL. COCORAHS STATION PAW PAW 3.6
            NNE /MI-VB-4/

&&

CAS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 8:39 PM EDTSpecial Weather StatementGRRMuskegon51 min
Aug 17, 8:51 PM EDTSpecial Weather StatementGRRNewaygo84 min
Aug 18, 10:38 AM EDTSmall Craft AdvisoryGRR65 hr
Aug 18, 2:06 PM EDTSpecial Weather StatementGRRKent54 min

Nearby

Beach Hazards Statements in Michigan, 2015Every 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.