Alert archive / Ohio / Special Marine Warnings in 2021

Special Marine Warning 21, NWS Cleveland, OH

June 28, 2021

NWS Cleveland, OH issued this special marine warning at Jun 28, 2021, 6:20 PM EDT. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 28, 2021, 6:20 PM EDT (22:20 UTC)
Expired: Jun 28, 2021, 7:12 PM EDT
In force: 52 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Hail: 0.75 in
Wind: 40.0 mph

The radar

The Cleveland radar (KCLE), 82 km from the middle of the area, began a volume at 22:21 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

Detroit, MI (KDTX), launched 12:00Z, 10.3 hours before the alert went out and 139 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 817 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -41 m²/s²
0-3 km storm-relative helicity: -16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

826 
WHUS51 KCLE 282220
SMWCLE
LEZ143-144-163-164-282345-
/O.NEW.KCLE.MA.W.0021.210628T2220Z-210628T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Cleveland OH
620 PM EDT Mon Jun 28 2021

The National Weather Service in Cleveland has issued a

* Special Marine Warning for...
  Nearshore and Open waters from Reno Beach OH to Vermilion OH...

* Until 745 PM EDT.

* At 619 PM EDT, a strong thunderstorm was located near Sandusky Bay,
  moving north at 20 knots.

  HAZARD...Wind gusts to 40 knots and small hail.

  SOURCE...Radar.

  IMPACT...Small craft could be damaged in briefly higher winds and 
           suddenly higher waves.

* Locations impacted include...
  Put-In-Bay, Sandusky Bay and Kelleys Island. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor until hazardous weather passes.

&&

LAT...LON 4144 8309 4179 8291 4171 8273 4167 8268
      4167 8249 4142 8267 4145 8281 4140 8294
TIME...MOT...LOC 2219Z 201DEG 18KT 4139 8293 

HAIL...<.75IN
WIND...40KTS

$$

Saunders

2 follow-up statements

073 
FZUS71 KCLE 282251
MWSCLE

Marine Weather Statement
National Weather Service Cleveland OH
651 PM EDT Mon Jun 28 2021

LEZ143-144-163-164-282345-
/O.CON.KCLE.MA.W.0021.000000T0000Z-210628T2345Z/
651 PM EDT Mon Jun 28 2021

...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 745 PM EDT...

For the following areas...
Nearshore and Open waters from Reno Beach OH to Vermilion OH...

At 651 PM EDT, a strong thunderstorm was located over Kelleys Island,
moving northeast at 25 knots.

HAZARD...Wind gusts 34 knots or greater.

SOURCE...Radar indicated.

IMPACT...Small craft could be damaged in briefly higher winds and 
         suddenly higher waves.

Locations impacted include...
Put-In-Bay and Kelleys Island. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor immediately as gusty winds and high waves are
expected.

&&

LAT...LON 4145 8281 4156 8284 4175 8285 4176 8285
      4171 8274 4167 8268 4167 8249 4142 8267
TIME...MOT...LOC 2251Z 221DEG 23KT 4155 8270 

HAIL...0.00IN
WIND...>34KTS

$$

Saunders

098 
FZUS71 KCLE 282312
MWSCLE

Marine Weather Statement
National Weather Service Cleveland OH
712 PM EDT Mon Jun 28 2021

LEZ143-144-163-164-282322-
/O.CAN.KCLE.MA.W.0021.000000T0000Z-210628T2345Z/
712 PM EDT Mon Jun 28 2021

...THE SPECIAL MARINE WARNING IS CANCELLED...

The affected areas were... 
Nearshore and Open waters from Reno Beach OH to Vermilion OH...

The thunderstorm has weakened and no longer poses a significant
threat to boaters.

LAT...LON 4145 8281 4156 8284 4175 8285 4176 8285
      4171 8274 4167 8268 4167 8249 4142 8267
TIME...MOT...LOC 2309Z 201DEG 18KT 4165 8265 

$$

Saunders

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 28, 2:26 PM EDT	Special Weather Statement	CLE	Ashland	19 min
Jun 28, 2:43 PM EDT	Special Marine Warning	CLE		22 min
Jun 28, 2:48 PM EDT	Special Weather Statement	CLE	Ottawa	42 min
Jun 28, 3:35 PM EDT	Special Weather Statement	CLE	Medina	40 min
Jun 28, 3:47 PM EDT	Special Weather Statement	CLE	Geauga	28 min
Jun 28, 4:16 PM EDT	Special Weather Statement	CLE	Geauga	29 min
Jun 28, 4:32 PM EDT	Special Weather Statement	CLE	Summit	28 min
Jun 28, 4:42 PM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Geauga, Portage, Summit	33 min
Jun 28, 5:18 PM EDT	Special Weather Statement	CLE	Seneca	27 min
Jun 28, 5:37 PM EDT	Special Weather Statement	CLE	Sandusky	23 min
Jun 28, 5:46 PM EDT	Special Weather Statement	CLE	Sandusky	29 min
Jun 28, 6:18 PM EDT	Special Weather Statement	CLE	Ottawa	27 min
Jun 28, 3:04 PM EDT	Special Weather Statement	CLE	Crawford	26 min
Jun 28, 6:01 PM EDT	Special Weather Statement	CLE	Crawford	29 min
Jun 28, 6:23 PM EDT	Special Weather Statement	CLE	Crawford	37 min

Nearby

Special Marine Warnings in Ohio, 2021 Every special marine warning 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.