Alert archive / Ohio / Special Marine Warnings in 2021

Special Marine Warning 13, NWS Cleveland, OH

June 21, 2021

NWS Cleveland, OH issued this special marine warning at Jun 21, 2021, 1:37 AM EDT. It was in force for 113 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 21, 2021, 1:37 AM EDT (05:37 UTC)
Expired: Jun 21, 2021, 3:30 AM EDT
In force: 113 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Hail: 0.0 in
Wind: 34.0 mph

The radar

The Cleveland radar (KCLE), 32 km from the middle of the area, began a volume at 05:38 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 00:00Z, 5.6 hours before the alert went out and 164 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: 133 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 1501 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

123 
WHUS51 KCLE 210537
SMWCLE
LEZ143>147-163>167-210730-
/O.NEW.KCLE.MA.W.0013.210621T0537Z-210621T0730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Cleveland OH
137 AM EDT Mon Jun 21 2021

The National Weather Service in Cleveland has issued a

* Special Marine Warning for...
  Nearshore waters from Reno Beach OH to Geneva-on-the lake OH...
  Open waters from Reno Beach OH to Geneva-on-the-lake OH...

* Until 330 AM EDT.

* At 133 AM EDT, a severe thunderstorm capable of producing
  waterspouts was located 19 nm northwest of Willowick, moving 
  northeast at 40 knots. More thunderstorms were located near Put-In-
  Bay capable of producing wind gusts 34 knots or greater, moving 
  east at 35 knots. Finally, an outflow boundary was moving 
  southeast across central Lake Erie and may produce wind gusts 
  greater than 34 knots.

  HAZARD...Waterspouts and wind gusts 34 knots or greater.

  SOURCE...Radar.

  IMPACT...Waterspouts can easily overturn boats and create locally 
           hazardous seas. Small craft could be damaged in briefly 
           higher winds and suddenly higher waves.

* Locations impacted include...
  Put-In-Bay, Western Vermilion, Geneva-On-The-Lake, Kelleys Island,
  Avon Point, Sandusky Bay, Willowick, Fairport Harbor, Lorain
  Harbor, Vermilion, Cleveland and Huron.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor until hazardous weather passes.

&&

LAT...LON 4143 8307 4176 8286 4167 8268 4168 8240
      4221 8124 4225 8093 4181 8094 4171 8125
      4149 8160 4144 8195 4145 8202 4138 8233
TIME...MOT...LOC 0533Z 229DEG 38KT 4186 8178 

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

$$

Sefcovic

2 follow-up statements

529 
FZUS71 KCLE 210629
MWSCLE

Marine Weather Statement
National Weather Service Cleveland OH
229 AM EDT Mon Jun 21 2021

LEZ143-144-163-164-210638-
/O.CAN.KCLE.MA.W.0013.000000T0000Z-210621T0730Z/
229 AM EDT Mon Jun 21 2021

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

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

The thunderstorms have moved out of the warned area and no longer 
pose a significant threat to boaters.

LAT...LON 4151 8236 4169 8237 4221 8125 4225 8093
      4181 8095 4154 8169
TIME...MOT...LOC 0628Z 241DEG 39KT 4176 8210 4164 8162 4189 8094 

$$

LEZ145>147-165>167-210730-
/O.CON.KCLE.MA.W.0013.000000T0000Z-210621T0730Z/
229 AM EDT Mon Jun 21 2021

...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 330 AM EDT...

For the following areas...
Nearshore and Open waters from Vermilion OH to Geneva-on-the-lake
OH...

At 228 AM EDT, severe thunderstorms capable of producing waterspouts 
and wind gusts over 34 knots were located along a line extending 
from 15 nm north of Avon Point to 7 nm west of Willowick to Geneva-
On-The-Lake, moving northeast at 40 knots.

HAZARD...Waterspouts and wind gusts 34 knots or greater.

SOURCE...Radar indicated.

IMPACT...Waterspouts can easily overturn boats and create locally 
         hazardous seas. Small craft could be damaged in briefly 
         higher winds and suddenly higher waves.

Locations impacted include...
Fairport Harbor, Willowick and Geneva-On-The-Lake. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor until hazardous weather passes.

&&

LAT...LON 4151 8236 4169 8237 4221 8125 4225 8093
      4181 8095 4154 8169
TIME...MOT...LOC 0628Z 241DEG 39KT 4176 8210 4164 8162 4189 8094 

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

$$

Sefcovic

530 
FZUS71 KCLE 210724
MWSCLE

Marine Weather Statement
National Weather Service Cleveland OH
324 AM EDT Mon Jun 21 2021

LEZ145>147-165>167-210734-
/O.EXP.KCLE.MA.W.0013.000000T0000Z-210621T0730Z/
324 AM EDT Mon Jun 21 2021

...THE SPECIAL MARINE WARNING WILL EXPIRE AT 330 AM EDT...

The affected areas were... 
Nearshore and Open waters from Vermilion OH to Geneva-on-the-lake
OH...

The thunderstorms have weakened and no longer pose a significant
threat to boaters.

LAT...LON 4151 8236 4169 8237 4221 8125 4225 8093
      4181 8095 4154 8169
TIME...MOT...LOC 0724Z 229DEG 38KT 4213 8154 4200 8106 4225 8037 

$$

Sefcovic

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 8:59 PM EDT	Special Weather Statement	CLE	Lucas	16 min
Jun 20, 9:18 PM EDT	Special Marine Warning	CLE		70 min
Jun 20, 9:34 PM EDT	Special Weather Statement	CLE	Lucas	41 min
Jun 20, 10:02 PM EDT	Severe Thunderstorm Warning	CLE	Lucas, Wood	46 min
Jun 20, 10:44 PM EDT	Special Marine Warning	CLE		46 min
Jun 20, 10:54 PM EDT	Special Marine Warning	CLE		96 min
Jun 20, 11:03 PM EDT	Special Marine Warning	CLE		87 min
Jun 20, 11:52 PM EDT	Special Marine Warning	CLE		113 min
Jun 21, 12:18 AM EDT	Special Weather Statement	CLE	Lucas	42 min
Jun 21, 12:40 AM EDT	Special Weather Statement	CLE	Ottawa	50 min
Jun 21, 2:19 AM EDT	Special Marine Warning	CLE		116 min
Jun 21, 3:52 AM EDT	Severe Thunderstorm Warning	CLE	Lucas, Ottawa, Sandusky, Wood	68 min
Jun 21, 4:03 AM EDT	Special Marine Warning	CLE		86 min
Jun 21, 4:17 AM EDT	Special Weather Statement	CLE	Hancock, Wood	43 min
Jun 21, 4:57 AM EDT	Special Weather Statement	CLE	Erie, Hancock, Huron, Sandusky, Seneca, Wyandot	63 min
Jun 21, 5:05 AM EDT	Special Marine Warning	CLE		115 min
Jun 21, 5:17 AM EDT	Severe Thunderstorm Warning	CLE	Erie, Huron, Sandusky, Seneca	43 min
Jun 21, 5:38 AM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Lorain	67 min
Jun 21, 6:14 AM EDT	Special Marine Warning	CLE		2 hr
Jun 21, 6:26 AM EDT	Severe Thunderstorm Warning	CLE	Geauga, Lake	49 min
Jun 21, 6:29 AM EDT	Special Weather Statement	CLE	Ashland, Medina, Portage, Summit, Wayne	31 min
Jun 21, 6:43 AM EDT	Severe Thunderstorm Warning	CLE	Geauga, Portage, Summit	47 min
Jun 21, 6:51 AM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Trumbull	54 min
Jun 21, 7:02 AM EDT	Special Weather Statement	CLE	Stark	43 min
Jun 21, 7:31 AM EDT	Special Weather Statement	CLE	Mahoning	44 min
Jun 21, 9:52 AM EDT	Special Weather Statement	CLE	Stark	23 min
Jun 21, 10:12 AM EDT	Special Weather Statement	CLE	Mahoning	48 min
Jun 21, 11:47 AM EDT	Special Weather Statement	CLE	Cuyahoga	43 min
Jun 21, 11:51 AM EDT	Special Weather Statement	CLE	Ashland, Richland	39 min
Jun 21, 12:13 PM EDT	Special Weather Statement	CLE	Geauga, Lake	47 min
Jun 21, 12:17 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Holmes, Richland, Wayne	43 min
Jun 21, 12:43 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning, Medina, Portage, Stark, Summit	47 min
Jun 21, 12:48 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Geauga, Trumbull	57 min
Jun 21, 12:52 PM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Geauga, Lake	34 min
Jun 21, 1:09 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning, Portage, Stark, Trumbull	54 min
Jun 21, 1:15 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula	60 min
Jun 21, 1:20 PM EDT	Areal Flood Advisory	CLE	Ashtabula	5 hr
Jun 21, 1:31 PM EDT	Severe Thunderstorm Warning	CLE	Stark	29 min
Jun 20, 10:45 PM EDT	Special Weather Statement	CLE	Erie	45 min
Jun 20, 11:19 PM EDT	Severe Thunderstorm Warning	CLE	Erie	26 min
Jun 21, 3:09 AM EDT	Special Weather Statement	CLE	Erie	66 min
Jun 21, 7:40 AM EDT	Special Weather Statement	CLE	Crawford, Erie	35 min
Jun 21, 1:53 PM EDT	Areal Flood Advisory	CLE	Crawford	5 hr
Jun 21, 2:06 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	54 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.