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Severe Thunderstorm Watch

SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 463
NWS STORM PREDICTION CENTER NORMAN OK
625 PM EDT SUN AUG 2 2015

SEVERE THUNDERSTORM WATCH 463 IS IN EFFECT UNTIL 200 AM EDT
FOR THE FOLLOWING LOCATIONS

MIC005-015-017-025-035-037-045-049-057-063-065-067-073-075-077-
081-085-087-093-099-105-107-111-117-121-123-125-127-133-139-145-
147-151-155-157-159-161-163-030600-
/O.NEW.KWNS.SV.A.0463.150802T2225Z-150803T0600Z/

MI
.    MICHIGAN COUNTIES INCLUDED ARE

ALLEGAN              BARRY               BAY
CALHOUN              CLARE               CLINTON
EATON                GENESEE             GRATIOT
HURON                INGHAM              IONIA
ISABELLA             JACKSON             KALAMAZOO
KENT                 LAKE                LAPEER
LIVINGSTON           MACOMB              MASON
MECOSTA              MIDLAND             MONTCALM
MUSKEGON             NEWAYGO             OAKLAND
OCEANA               OSCEOLA             OTTAWA
SAGINAW              SANILAC             SHIAWASSEE
ST. CLAIR            TUSCOLA             VAN BUREN
WASHTENAW            WAYNE
$$




Beach Hazards Statement

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
307 PM EDT SUN AUG 2 2015

MIZ037-043-050-056-064-071-030315-
/O.CON.KGRR.BH.S.0015.000000T0000Z-150803T1200Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
307 PM EDT SUN AUG 2 2015

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH MONDAY
MORNING...

* 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 LATE TONIGHT
  AND SUNDAY INCLUDE...SOUTH BEACH IN SOUTH HAVEN... GRAND HAVEN
  STATE PARK... PERE MARQUETTE PARK IN MUSKEGON.

* OVERVIEW/POTENTIAL IMPACTS...SOUTHWEST WINDS 25 TO 30 MPH WITH
  HIGHER GUSTS POSSIBLE. WAVES WILL BUILD TO 3 TO 6 FEET WITH
  LOCALLY HIGHER WAVES LIKELY.

 A SQUALL LINE IS EXPECTED TO MOVE THROUGH THE AREA THIS
EVENING. THIS WILL HAVE THE POTENTIAL TO BRING VERY STRONG
WINDS AND EXTREMELY DANGEROUS CONDITIONS FOR A PERIOD 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.

&&

$$

NJJ

WEATHER.GOV/GRR




Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1118 AM EDT SUN AUG 2 2015

MIZ037>040-043>046-050>052-056>059-064>067-071>074-031000-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
1118 AM EDT SUN AUG 2 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SEVERE THUNDERSTORMS ARE LIKELY VERY LATE THIS AFTERNOON INTO
TONIGHT. A FEW SCATTERED STRONGER STORMS WILL BE POSSIBLE THROUGH
THIS AFTERNOON NEAR U.S.-10.

THE MAIN THREAT WILL BE DAMAGING WIND GUSTS OF 60 MPH OR GREATER.
SECONDARY CONCERNS INCLUDE LARGE HAIL...HEAVY RAINFALL...AND AN
ISOLATED TORNADO. THE STORMS WILL FORM ALONG A COLD FRONT WHICH WILL
APPROACH LUDINGTON AROUND 6PM AND REACH GRAND RAPIDS AROUND 10 PM.
STORMS WILL CONTINUE MOVING SOUTHEAST TOWARD THE I-94 CORRIDOR AFTER
11 PM.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED THIS AFTERNOON AND TONIGHT.

$$



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Page last modified: May 16, 2007
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