Alert archive / Minnesota / Beach Hazards Statements in 2021

Beach Hazards Statement 10, NWS Duluth, MN

July 21, 2021Douglas County, Wisconsin; Carlton County, Saint Louis County, Minnesota

NWS Duluth, MN issued this beach hazards statement at Jul 21, 2021, 3:28 AM CDT for Douglas County, Wisconsin; Carlton County, Saint Louis County, Minnesota. It took effect at Jul 21, 2021, 12:00 PM CDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Jul 21, 2021, 3:28 AM CDT (08:28 UTC)
In effect from
Jul 21, 2021, 12:00 PM CDT
Expired
Jul 21, 2021, 10:00 PM CDT
In force
10 hr
Issued by
NWS Duluth, MN

Counties Carlton County, MN, Saint Louis County, MN, Douglas County, WI

The radar

The Duluth radar (KDLH), 11 km from the middle of the area, began a volume at 08:33 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

International Fa, MN (KINL), launched 00:00Z, 8.5 hours before the alert went out and 201 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, International Fa, MN at 00:00Z on 2021-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, International Fa, MN at 00:00Z on 2021-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 square meters per square second.1939587897Sfc1 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
1121 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

296 
WHUS43 KDLH 210828
CFWDLH

Coastal Hazard Message
National Weather Service Duluth MN
328 AM CDT Wed Jul 21 2021

MNZ037-WIZ001-220230-
/O.NEW.KDLH.BH.S.0010.210721T1700Z-210722T0300Z/
Carlton/Southern St. Louis-Douglas-
328 AM CDT Wed Jul 21 2021

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

The National Weather Service in Duluth has issued a Beach Hazards
Statement, which is in effect from noon CDT today through this
evening.

* LOCATIONS...Park Point and Wisconsin Point Beaches.

* TIMING...This afternoon through evening. 

* DANGEROUS SWIMMING CONDITIONS...Are expected along the Lake 
  Superior shoreline due to high wave action and strong rip 
  currents.

* HIGH WAVE ACTION...Can make swimming difficult on days such as 
  this. Incoming waves in rapid succession can tire a swimmer 
  quickly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Rip currents are powerful channels of water flowing quickly away
from shore...which occur most often at low spots in sandbars...
near shoreline structures such as peninsulas or breakwalls...and
near river mouths.

For additional safety information and precautions...please visit
www.weather.gov/Duluth

&&

$$

Nearby

Beach Hazards Statements in Minnesota, 2021Beach Hazards Statements in Wisconsin, 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.