Alert archive / Minnesota / Beach Hazards Statements in 2021

Beach Hazards Statement 8, NWS Duluth, MN

July 14, 2021Carlton County, Saint Louis County, Minnesota; Douglas County, Wisconsin

NWS Duluth, MN issued this beach hazards statement at Jul 14, 2021, 10:43 AM CDT for Carlton County, Saint Louis County, Minnesota; Douglas County, Wisconsin. It took effect at Jul 14, 2021, 11:00 AM CDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Jul 14, 2021, 10:43 AM CDT (15:43 UTC)
In effect from
Jul 14, 2021, 11:00 AM CDT
Expired
Jul 14, 2021, 9:00 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 15:41 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 12:00Z, 3.7 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 12:00Z on 2021-07-14Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 12:00Z on 2021-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -47 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
1177 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
-11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

798 
WHUS43 KDLH 141543
CFWDLH

Coastal Hazard Message
National Weather Service Duluth MN
1043 AM CDT Wed Jul 14 2021

MNZ037-WIZ001-150200-
/O.NEW.KDLH.BH.S.0008.210714T1600Z-210715T0200Z/
Carlton and South St. Louis-Douglas-
1043 AM CDT Wed Jul 14 2021

...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 9 PM CDT THIS
EVENING...

* WHAT...Dangerous swimming conditions are expected due to high 
  wave action and strong rip currents.

* WHERE...In Wisconsin, Douglas County. In Minnesota, Carlton 
  and South St. Louis County.

* WHEN...Until 9 PM CDT this evening.

* IMPACTS...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

&&

$$
1 follow-up statement
745 
WHUS43 KDLH 150159
CFWDLH

Coastal Hazard Message
National Weather Service Duluth MN
859 PM CDT Wed Jul 14 2021

MNZ037-WIZ001-150300-
/O.EXP.KDLH.BH.S.0008.000000T0000Z-210715T0200Z/
Carlton/Southern St. Louis-Douglas-
859 PM CDT Wed Jul 14 2021

...BEACH HAZARDS STATEMENT WILL EXPIRE AT 9 PM CDT THIS EVENING...

The risk of high waves and rip currents has diminished. 

$$

The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 14, 10:10 AM CDTSmall Craft AdvisoryDLH9 hr
Jul 14, 1:21 PM CDTSpecial Weather StatementDLHPrice, Sawyer, Washburn24 min
Jul 14, 1:56 PM CDTSpecial Weather StatementDLHWashburn19 min
Jul 14, 2:21 PM CDTSpecial Weather StatementDLHWashburn24 min
Jul 14, 2:54 PM CDTFlash Flood WarningDLHWashburn3 hr

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.