Alert archive / Michigan / Beach Hazards Statements in 2021

Beach Hazards Statement 11, NWS Detroit, MI

September 18, 2021Huron County, Michigan

NWS Detroit, MI issued this beach hazards statement at Sep 18, 2021, 3:40 AM EDT for Huron County, Michigan. It took effect at Sep 18, 2021, 8:00 AM EDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Sep 18, 2021, 3:40 AM EDT (07:40 UTC)
In effect from
Sep 18, 2021, 8:00 AM EDT
Expired
Sep 18, 2021, 4:00 PM EDT
In force
8 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 07:44 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

Alpena, MI (KAPX), launched 00:00Z, 7.7 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 2021-09-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Alpena, MI at 00:00Z on 2021-09-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1015 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
148 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

894 
WHUS43 KDTX 180740
CFWDTX

Coastal Hazard Message
National Weather Service Detroit/Pontiac MI
340 AM EDT Sat Sep 18 2021

MIZ049-182000-
/O.NEW.KDTX.BH.S.0011.210918T1200Z-210918T2000Z/
Huron-
340 AM EDT Sat Sep 18 2021

...BEACH HAZARDS STATEMENT IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH THIS AFTERNOON...

* WHAT...High wave action and dangerous swimming conditions
  expected.

* WHERE...Huron County.

* WHEN...From 8 AM EDT this morning through this afternoon.

* IMPACTS...Strong currents can pull swimmers into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

Nearby

Beach Hazards Statements in Michigan, 2021Every beach hazards statement in 2021

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.