Alert archive / Ohio / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 284, NWS Cleveland, OH

September 4, 2011Ashtabula County, Ohio; Erie County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Sep 4, 2011, 2:31 AM EDT for Ashtabula County, Ohio; Erie County, Pennsylvania. It was in force for 44 min. 2 reports 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
Sep 4, 2011, 2:31 AM EDT (06:31 UTC)
Expired
Sep 4, 2011, 3:15 AM EDT
In force
44 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

Counties Ashtabula County, OH, Erie County, PA

The radar

The Cleveland radar (KCLE), 133 km from the middle of the area, began a volume at 06:32 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
Sep 4, 2:40 AM EDTTSTM WND DMG8 Nw Albion, PALARGE LIMB FELL ON POWER LINE.
Sep 4, 3:05 AM EDTTSTM WND DMGAlbion, PATREE LIMB FELL ON HOUSE AND PULLED DOWN THE GUTTER.

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

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 6.5 hours before the alert went out and 170 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 00:00Z on 2011-09-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 104 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, Pittsburgh, PA at 00:00Z on 2011-09-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
104 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
2364 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
-7 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.

895 
WUUS51 KCLE 040631
SVRCLE
OHC007-PAC049-040715-
/O.NEW.KCLE.SV.W.0284.110904T0631Z-110904T0715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
231 AM EDT SUN SEP 4 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ASHTABULA COUNTY IN NORTHEAST OHIO
  SOUTHWESTERN ERIE COUNTY IN NORTHWEST PENNSYLVANIA

* UNTIL 315 AM EDT

* AT 228 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  NORTH KINGSVILLE...AND MOVING NORTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CONNEAUT...
  ALBION...
  GIRARD...

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 4198 8009 4185 8037 4185 8051 4178 8052
      4174 8060 4185 8078 4193 8070 4204 8036
      4209 8024 4209 8022
TIME...MOT...LOC 0631Z 221DEG 20KT 4187 8061

$$

KING
1 follow-up statement
687 
WWUS51 KCLE 040648
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
248 AM EDT SUN SEP 4 2011

OHC007-040658-
/O.CAN.KCLE.SV.W.0284.000000T0000Z-110904T0715Z/
ASHTABULA OH-
248 AM EDT SUN SEP 4 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ASHTABULA COUNTY
IS CANCELLED...

LAT...LON 4198 8009 4185 8037 4185 8051 4187 8052
      4199 8052 4204 8035 4205 8034 4205 8033
      4209 8023
TIME...MOT...LOC 0648Z 221DEG 20KT 4194 8041

$$

PAC049-040715-
/O.CON.KCLE.SV.W.0284.000000T0000Z-110904T0715Z/
ERIE PA-
248 AM EDT SUN SEP 4 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM EDT
FOR SOUTHWESTERN ERIE COUNTY IN NORTHWEST PENNSYLVANIA...

AT 246 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
NEAR ALBION...OR 20 MILES EAST OF ASHTABULA...MOVING NORTHEAST AT 25
MPH.

LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...GIRARD.

LAT...LON 4198 8009 4185 8037 4185 8051 4187 8052
      4199 8052 4204 8035 4205 8034 4205 8033
      4209 8023
TIME...MOT...LOC 0648Z 221DEG 20KT 4194 8041

$$

KING

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 3, 10:08 PM EDTSevere Thunderstorm WarningCLEHancock, Wood52 min
Sep 3, 11:46 PM EDTSpecial Marine WarningCLE119 min
Sep 4, 12:08 AM EDTSevere Thunderstorm WarningCLECrawford, Marion, Morrow, Richland67 min
Sep 4, 1:17 AM EDTSpecial Marine WarningCLE73 min
Sep 4, 1:32 AM EDTSevere Thunderstorm WarningCLELorain, Medina43 min
Sep 4, 2:00 AM EDTSpecial Marine WarningCLE75 min
Sep 4, 2:21 AM EDTSevere Thunderstorm WarningCLECuyahoga, Geauga, Lake29 min
Sep 4, 3:05 AM EDTSpecial Marine WarningCLE40 min
Sep 4, 3:17 PM EDTSmall Craft AdvisoryCLE5 days
Sep 4, 2:58 AM EDTSevere Thunderstorm WarningCLEErie62 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2011Severe Thunderstorm Warnings in Pennsylvania, 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.