Alert archive / Ohio / Special Marine Warnings in 2012

Special Marine Warning 21, NWS Cleveland, OH

June 21, 2012

NWS Cleveland, OH issued this special marine warning at Jun 21, 2012, 10:27 PM EDT. It was in force for 48 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, 2012, 10:27 PM EDT (02:27 UTC)
Expired
Jun 21, 2012, 11:15 PM EDT
In force
48 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

The radar

The Cleveland radar (KCLE), 47 km from the middle of the area, began a volume at 02:29 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, 2.5 hours before the alert went out and 159 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, Detroit, MI at 00:00Z on 2012-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 25 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, Detroit, MI at 00:00Z on 2012-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 square meters per square second.19395878Sfc1 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
25 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
949 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
-41 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

089 
WHUS51 KCLE 220227
SMWCLE
LEZ144-145-164-165-220315-
/O.NEW.KCLE.MA.W.0021.120622T0227Z-120622T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
1027 PM EDT THU JUN 21 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SPECIAL MARINE WARNING FOR...
  THE ISLANDS TO AVON POINT OH...
* UNTIL 1115 PM EDT

* AT 1025 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM...PRODUCING STRONG WINDS 34 KNOTS OR GREATER OVER     
  HURON...MOVING NORTHEAST AT 25 KNOTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS CAN EXPECT GUSTY WINDS...HIGH WAVES...DANGEROUS LIGHTNING...
AND HEAVY RAINS. BOATERS SHOULD SEEK SAFE HARBOR IMMEDIATELY...UNTIL
THIS STORM PASSES.

&&

LAT...LON 4141 8265 4148 8269 4169 8246 4169 8239
      4177 8220 4143 8219 4143 8225 4141 8227
      4141 8237 4137 8247
TIME...MOT...LOC 0227Z 238DEG 25KT 4144 8256

$$

OUDEMAN
1 follow-up statement
997 
FZUS71 KCLE 220311
MWSCLE

MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1111 PM EDT THU JUN 21 2012

LEZ144-145-164-165-220317-
/O.EXP.KCLE.MA.W.0021.000000T0000Z-120622T0315Z/
1111 PM EDT THU JUN 21 2012

...SPECIAL MARINE WARNING WILL EXPIRE AT 1115 PM EDT...

THE AFFECTED AREAS WERE...
THE ISLANDS TO AVON POINT OH...

THE STORMS HAVE WEAKENED...BUT GUSTS TO 33 KNOTS WILL STILL BE 
POSSIBLE THROUGH MIDNIGHT WITHIN THE SHOWERS AND THUNDERSTORMS FROM 
LORAIN HARBOR TO AVON POINT.

LAT...LON 4141 8265 4148 8269 4169 8246 4169 8239
      4177 8220 4143 8219 4143 8225 4141 8227
      4141 8237 4137 8247
TIME...MOT...LOC 0307Z 238DEG 25KT 4159 8224

$$

OUDEMAN

Nearby

Special Marine Warnings in Ohio, 2012Every special marine warning in 2012

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.