Alert archive / Michigan / Beach Hazards Statements in 2017

Beach Hazards Statement 2, NWS Detroit, MI

July 16, 2017Huron County, Michigan

NWS Detroit, MI issued this beach hazards statement at Jul 16, 2017, 4:05 AM EDT for Huron County, Michigan. It took effect at Jul 16, 2017, 12:00 PM EDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Jul 16, 2017, 4:05 AM EDT (08:05 UTC)
In effect from
Jul 16, 2017, 12:00 PM EDT
Expired
Jul 17, 2017, 12:00 AM EDT
In force
12 hr
Issued by
NWS Detroit, MI

County Huron County, MI

The radar

The Detroit radar (KDTX), 144 km from the middle of the area, began a volume at 08:05 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

Alpena, MI (KAPX), launched 00:00Z, 8.1 hours before the alert went out and 134 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, Alpena, MI at 00:00Z on 2017-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 47 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, Alpena, MI at 00:00Z on 2017-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 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
47 J/kg
Mixed-layer CIN
-269 J/kg
Mixed-layer LCL
1250 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
104 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

889 
WHUS43 KDTX 160805
CFWDTX

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
405 AM EDT SUN JUL 16 2017

...DANGEROUS SWIMMING CONDITIONS DEVELOPING THIS AFTERNOON...

MIZ049-162015-
/O.NEW.KDTX.BH.S.0002.170716T1600Z-170717T0400Z/
HURON-
405 AM EDT SUN JUL 16 2017

...BEACH HAZARDS STATEMENT IN EFFECT FROM NOON EDT TODAY THROUGH
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
BEACH HAZARDS STATEMENT...WHICH IS IN EFFECT FROM NOON EDT TODAY
THROUGH THIS EVENING. 

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* STRONG STRUCTURAL CURRENTS...EXPECTED.

* LOCATION...BEACHES FROM CASEVILLE TO HARBOR BEACH INCLUDING...

  CASEVILLE...SAND POINT...PORT CRESCENT STATE PARK...
  PORT AUSTIN...HARBOR BEACH...

* OVERVIEW/POTENTIAL IMPACTS... NORTHEAST WIND OF 20 TO 25 KNOTS
  IS EXPECTED TO DEVELOP DURING THE AFTERNOON AFTER THE PASSAGE OF
  A COLD FRONT. HIGH WAVES ARE EXPECTED TO DEVELOP IN THIS ONSHORE
  WIND PATTERN. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

CHILDREN SHOULD NOT ENTER THE WATER UNSUPERVISED AND WITHOUT A 
CERTIFIED FLOTATION DEVICE. CAUTION SHOULD BE USED WHEN IN OR NEAR
THE WATER. PAY ATTENTION TO FLAGS AND SIGNS POSTED NEAR BEACH 
ACCESS POINTS AND LIFEGUARD STATIONS. 

HIGH WAVE ACTION ALONE CAN MAKE SWIMMING DIFFICULT ON DAYS SUCH
AS THIS. INCOMING WAVES IN RAPID SUCCESSION CAN TIRE A SWIMMER
QUICKLY.

STRUCTURAL CURRENTS FORM ALONG PIERS WHERE LONGSHORE CURRENTS AND
WAVE ACTION FLOW INTO THE STRUCTURE. STRUCTURAL CURRENTS CAN
SWEEP YOU OUT LAKEWARD ALONG THE PIER STRUCTURE.

TO LEARN MORE ABOUT DANGEROUS WAVES AND CURRENTS PLEASE VISIT
DANGEROUSCURRENTS.ORG (ALL LOWER CASE)

&&

$$
1 follow-up statement
595 
WHUS43 KDTX 161948
CFWDTX

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
348 PM EDT SUN JUL 16 2017

...DANGEROUS SWIMMING CONDITIONS LATE THIS AFTERNOON AND EVENING...

MIZ049-170400-
/O.CON.KDTX.BH.S.0002.000000T0000Z-170717T0400Z/
HURON-
348 PM EDT SUN JUL 16 2017

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL MIDNIGHT EDT
TONIGHT...

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* STRONG STRUCTURAL CURRENTS...EXPECTED.

* LOCATIONDEVELOPING THIS...BEACHES FROM CASEVILLE TO HARBOR 
  BEACH INCLUDING...

 CASEVILLE...SAND POINT...PORT CRESCENT STATE PARK...   PORT
AUSTIN...HARBOR BEACH...

* OVERVIEW/POTENTIAL IMPACTS...NORTHEAST WINDS AROUND 20 KNOTS 
  LATE THIS AFTERNOON INTO EARLY THIS EVENING WILL LEAD TO HIGH 
  WAVES. 

 PRECAUTIONARY/PREPAREDNESS ACTIONS...

HIGH WAVE ACTION ALONE CAN MAKE SWIMMING DIFFICULT ON DAYS SUCH
AS THIS. INCOMING WAVES IN RAPID SUCCESSION CAN TIRE A SWIMMER
QUICKLY.

STRUCTURAL CURRENTS FORM ALONG PIERS WHERE LONGSHORE CURRENTS AND
WAVE ACTION FLOW INTO THE STRUCTURE. STRUCTURAL CURRENTS CAN
SWEEP YOU OUT LAKEWARD ALONG THE PIER STRUCTURE.

TO LEARN MORE ABOUT DANGEROUS WAVES AND CURRENTS PLEASE VISIT
DANGEROUSCURRENTS.ORG (ALL LOWER CASE)

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 4:08 AM EDTSmall Craft AdvisoryDTX24 hr
Jul 16, 1:54 PM EDTSpecial Weather StatementDTXSaint Clair36 min

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.