Alert archive / Ohio / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 42, NWS Cleveland, OH

May 12, 2011Mahoning County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at May 12, 2011, 5:58 PM EDT for Mahoning County, Ohio. It was in force for 47 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 12, 2011, 5:58 PM EDT (21:58 UTC)
Expired
May 12, 2011, 6:45 PM EDT
In force
47 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

County Mahoning County, OH

The radar

The Pittsburgh radar (KPBZ), 64 km from the middle of the area, began a volume at 21:58 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.

What was reported inside it

TimeReportWhereRemark
May 12, 6:05 PM EDTTSTM WND DMG4 S Canfield, OHTWO TREES DOWN NEAR GREENFORD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 12, 11:04 AM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.0 hours before the alert went out and 81 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, Pittsburgh, PA at 12:00Z on 2011-05-12Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2011-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.193958Sfc1 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
1624 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
44 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.

284 
WUUS51 KCLE 122158
SVRCLE
OHC099-122245-
/O.NEW.KCLE.SV.W.0042.110512T2158Z-110512T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
558 PM EDT THU MAY 12 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MAHONING COUNTY IN NORTHEAST OHIO

* UNTIL 645 PM EDT

* AT 558 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM YOUNGSTOWN TO 10 MILES SOUTH OF
  CANFIELD...AND MOVING EAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  YOUNGSTOWN...
  BOARDMAN...
  CAMPBELL...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. SEEK SHELTER INSIDE NOW AND STAY AWAY FROM
WINDOWS.

&&

PLEASE REPORT HAIL AND STRONG WINDS TO THE NATIONAL WEATHER SERVICE
BY CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 4090 8053 4089 8081 4093 8082 4093 8088
      4090 8089 4089 8090 4090 8094 4113 8082
      4113 8051 4097 8052
TIME...MOT...LOC 2159Z 285DEG 12KT 4111 8070 4089 8083

$$

OUDEMAN
2 follow-up statements
368 
WWUS51 KCLE 122223
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
623 PM EDT THU MAY 12 2011

OHC099-122245-
/O.CON.KCLE.SV.W.0042.000000T0000Z-110512T2245Z/
MAHONING OH-
623 PM EDT THU MAY 12 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR EASTERN MAHONING COUNTY...

AT 616 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM YOUNGSTOWN TO WASHINGTONVILLE...
MOVING EAST AT 15 MPH.

LOCATIONS NEAR THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
STRUTHERS...LOWELLVILLE AND NEW MIDDLETOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. SEEK SHELTER INSIDE NOW AND STAY AWAY FROM
WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
THURSDAY EVENING FOR NORTHERN OHIO AND NORTHWEST PENNSYLVANIA.

&&

LAT...LON 4090 8053 4089 8081 4093 8082 4093 8088
      4090 8089 4089 8090 4090 8094 4109 8074
      4113 8051 4097 8052
TIME...MOT...LOC 2223Z 285DEG 12KT 4109 8060 4087 8073

$$
SCHULER
473 
WWUS51 KCLE 122241
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
641 PM EDT THU MAY 12 2011

OHC099-122251-
/O.EXP.KCLE.SV.W.0042.000000T0000Z-110512T2245Z/
MAHONING OH-
641 PM EDT THU MAY 12 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MAHONING COUNTY
EXPIRES AT 645 PM EDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
THURSDAY EVENING FOR NORTHERN OHIO AND NORTHWEST PENNSYLVANIA.

LAT...LON 4090 8053 4089 8081 4093 8082 4093 8088
      4090 8089 4089 8090 4090 8094 4109 8074
      4113 8051 4097 8052
TIME...MOT...LOC 2241Z 285DEG 12KT 4107 8052 4085 8065

$$
SCHULER

The office that day

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

IssuedProductOfficeCountiesLasted
May 12, 5:11 AM EDTSevere Thunderstorm WarningCLEAshland, Richland49 min
May 12, 6:03 AM EDTSevere Thunderstorm WarningCLEAshland, Holmes, Wayne57 min
May 12, 7:02 AM EDTSevere Thunderstorm WarningCLEHolmes58 min
May 12, 8:23 AM EDTSpecial Marine WarningCLE82 min
May 12, 2:50 PM EDTSevere Thunderstorm WarningCLEErie, Huron, Lorain40 min
May 12, 3:33 PM EDTSevere Thunderstorm WarningCLEAshtabula, Geauga, Lake42 min
May 12, 3:34 PM EDTSevere Thunderstorm WarningCLECrawford, Huron, Richland, Seneca56 min
May 12, 3:44 PM EDTFlash Flood WarningCLEAshtabula, Geauga, Lake3 hr
May 12, 3:50 PM EDTSevere Thunderstorm WarningCLEAshland, Medina, Wayne55 min
May 12, 3:54 PM EDTSevere Thunderstorm WarningCLEErie, Huron51 min
May 12, 3:56 PM EDTSevere Thunderstorm WarningCLEMedina, Portage, Summit64 min
May 12, 4:08 PM EDTSevere Thunderstorm WarningCLECuyahoga, Medina, Summit67 min
May 12, 4:11 PM EDTAreal Flood AdvisoryCLEAshland, Cuyahoga, Erie, Geauga, Huron, Lake and 5 more10 hr
May 12, 4:14 PM EDTSevere Thunderstorm WarningCLEAshtabula, Geauga, Lake46 min
May 12, 4:19 PM EDTSevere Thunderstorm WarningCLETrumbull41 min
May 12, 4:26 PM EDTAreal Flood WarningCLEErie, Huron3 hr
May 12, 4:39 PM EDTSevere Thunderstorm WarningCLEGeauga, Portage, Trumbull51 min
May 12, 4:45 PM EDTSevere Thunderstorm WarningCLEGeauga45 min
May 12, 4:58 PM EDTSevere Thunderstorm WarningCLEAshland, Medina, Wayne47 min
May 12, 5:27 PM EDTAreal Flood AdvisoryCLEMahoning, Trumbull9 hr
May 12, 5:29 PM EDTRiver Flood WarningCLEErie, Huron7 hr
May 12, 5:43 PM EDTSpecial Marine WarningCLE77 min
May 12, 6:38 PM EDTAreal Flood AdvisoryCLESandusky, Seneca3 hr
May 12, 6:43 PM EDTAreal Flood WarningCLEGeauga, Lake4 hr

Nearby

Severe Thunderstorm Warnings in Ohio, 2011Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.