Alert archive / Minnesota / Beach Hazards Statements in 2023

Beach Hazards Statement 21, NWS Duluth, MN

September 11, 2023Carlton County, Saint Louis County, Minnesota; Douglas County, Wisconsin

NWS Duluth, MN issued this beach hazards statement at Sep 11, 2023, 3:21 AM CDT for Carlton County, Saint Louis County, Minnesota; Douglas County, Wisconsin. It took effect at Sep 11, 2023, 2:00 PM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Sep 11, 2023, 3:21 AM CDT (08:21 UTC)
In effect from
Sep 11, 2023, 2:00 PM CDT
Expired
Sep 11, 2023, 10:00 PM CDT
In force
8 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 08:23 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, 8.4 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 2023-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 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, International Fa, MN at 00:00Z on 2023-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.1939Sfc1 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
13 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
1783 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

072 
WHUS43 KDLH 110821
CFWDLH

Coastal Hazard Message
National Weather Service Duluth MN
321 AM CDT Mon Sep 11 2023

MNZ037-WIZ001-120230-
/O.NEW.KDLH.BH.S.0021.230911T1900Z-230912T0300Z/
Carlton and South St. Louis-Douglas-
321 AM CDT Mon Sep 11 2023

...BEACH HAZARDS STATEMENT IN EFFECT FROM 2 PM CDT THIS AFTERNOON
THROUGH THIS EVENING...

* WHAT...Dangerous swimming conditions are expected along the 
  Lake Superior shoreline due to high wave action and strong rip 
  currents.

* WHERE...Minnesota Park Point and Wisconsin Point Beaches.

* WHEN...From 2 PM CDT this afternoon through this evening.

* IMPACTS...High wave action can make swimming difficult on days 
  such as this. Incoming waves in rapid succession can tire even 
  an experienced swimmer quickly. Rip currents can usher you away 
  from land. To avoid being swept away, swim parallel to the shore
  to exit a rip current.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
1 follow-up statement
609 
WHUS43 KDLH 120304
CFWDLH

Coastal Hazard Message
National Weather Service Duluth MN
1004 PM CDT Mon Sep 11 2023

MNZ037-WIZ001-120415-
/O.EXP.KDLH.BH.S.0021.000000T0000Z-230912T0300Z/
Carlton and South St. Louis-Douglas-
1004 PM CDT Mon Sep 11 2023

...BEACH HAZARDS STATEMENT HAS EXPIRED...

Waves will remain elevated through the night. An additional Beach
Hazard Statement may be needed on Tuesday.

$$

Unruh

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 11, 2:24 AM CDTDense Fog AdvisoryDLHAitkin, Carlton, Pine, Saint Louis8 hr
Sep 11, 2:30 PM CDTSpecial Weather StatementDLHWadena30 min
Sep 11, 3:19 PM CDTSpecial Weather StatementDLHCass26 min
Sep 11, 3:22 PM CDTSpecial Weather StatementDLHCass38 min
Sep 11, 3:40 PM CDTSpecial Weather StatementDLH20 min
Sep 11, 3:59 PM CDTSpecial Weather StatementDLHCass31 min
Sep 11, 4:02 PM CDTSpecial Weather StatementDLHCrow Wing28 min
Sep 11, 4:05 PM CDTSpecial Weather StatementDLHCarlton25 min
Sep 11, 4:18 PM CDTSpecial Weather StatementDLHCrow Wing27 min
Sep 11, 4:26 PM CDTSpecial Weather StatementDLHCrow Wing34 min
Sep 11, 4:39 PM CDTSpecial Weather StatementDLHCrow Wing36 min
Sep 11, 4:50 PM CDTSpecial Weather StatementDLHCrow Wing25 min
Sep 11, 5:08 PM CDTSpecial Weather StatementDLHItasca22 min
Sep 11, 5:21 PM CDTSpecial Weather StatementDLHCrow Wing24 min
Sep 11, 5:36 PM CDTSpecial Weather StatementDLHCrow Wing24 min
Sep 11, 6:10 PM CDTSpecial Weather StatementDLHAitkin35 min

Nearby

Beach Hazards Statements in Minnesota, 2023Beach Hazards Statements in Wisconsin, 2023Every beach hazards statement in 2023

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.