Alert archive / Ohio / Tornado Warnings in 2011

Tornado Warning 33, NWS Wilmington, OH

April 27, 2011Mercer County, Ohio

NWS Wilmington, OH issued this tornado warning at Apr 27, 2011, 11:31 PM EDT for Mercer County, Ohio. It was in force for 29 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
Apr 27, 2011, 11:31 PM EDT (03:31 UTC)
Expired
Apr 28, 2011, 12:00 AM EDT
In force
29 min
Issued by
NWS Wilmington, OH
Area
Storm-based polygon

County Mercer County, OH

The radar

The Northern Indiana radar (KIWX), 126 km from the middle of the area, began a volume at 03:34 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 watch it was issued in

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

IssuedProductOfficeLasted
Apr 27, 7:22 PM EDTTornado WatchSPC8 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 3.5 hours before the alert went out and 145 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, Cncnati-Daytn, OH at 00:00Z on 2011-04-28Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2011-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 square meters per square second.1939587897117Sfc1 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
775 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
521 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

519 
WFUS51 KILN 280331
TORILN
OHC107-280400-
/O.NEW.KILN.TO.W.0033.110428T0331Z-110428T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
1131 PM EDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* TORNADO WARNING FOR...
  MERCER COUNTY IN WEST CENTRAL OHIO...

* UNTIL MIDNIGHT EDT.

* AT 1129 PM EDT...RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 5 MILES
  SOUTHWEST OF FORT RECOVERY......MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  FORT RECOVERY...
  COLDWATER...
  ROCKFORD...
  CELINA...

IN ADDITION...WABASH...NEPTUNE AND TAMA ARE NEAR THE PATH OF THIS
DANGEROUS THUNDERSTORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM EDT THURSDAY MORNING
FOR SOUTHEASTERN INDIANA AND NORTHEASTERN KENTUCKY AND SOUTHWESTERN
OHIO.

&&

LAT...LON 4063 8445 4057 8445 4035 8473 4035 8481
      4058 8481 4074 8465 4073 8461
TIME...MOT...LOC 0331Z 221DEG 32KT 4039 8485

$$


BINAU
2 follow-up statements
547 
WWUS51 KILN 280343
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
1143 PM EDT WED APR 27 2011

OHC107-280400-
/O.CON.KILN.TO.W.0033.000000T0000Z-110428T0400Z/
MERCER OH-
1143 PM EDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT FOR MERCER
COUNTY...

AT 1141 PM EDT...RADAR CONTINUED TO INDICATE A LINE OF SEVERE 
THUNDERSTORMS ACROSS WESTERN MERCER COUNTY...WITH THE POTENTIAL FOR 
EMBEDDED TORNADOES. THESE DANGEROUS STORMS WERE LOCATED NEAR WABASH 
TO FORT RECOVERY...MOVING NORTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
COLDWATER...CELINA AND ROCKFORD.

IN ADDITION...WABASH...NEPTUNE AND TAMA ARE NEAR THE PATH OF THESE
STORMS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER. PROTECT YOURSELF
FROM FLYING DEBRIS.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

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

&&

LAT...LON 4063 8445 4057 8445 4035 8473 4035 8481
      4058 8481 4074 8465 4073 8461
TIME...MOT...LOC 0342Z 224DEG 35KT 4049 8476

$$


BINAU
882 
WWUS51 KILN 280352
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
1152 PM EDT WED APR 27 2011

OHC107-280400-
/O.CON.KILN.TO.W.0033.000000T0000Z-110428T0400Z/
MERCER OH-
1152 PM EDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT FOR
NORTHERN MERCER COUNTY...

AT 1150 PM EDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
WABASH...MOVING NORTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
CELINA AND ROCKFORD.

IN ADDITION...TAMA IS NEAR THE PATH OF THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER. PROTECT YOURSELF
FROM FLYING DEBRIS.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

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

&&

LAT...LON 4060 8449 4056 8451 4046 8467 4048 8474
      4054 8476 4061 8478 4071 8467 4070 8463
TIME...MOT...LOC 0351Z 224DEG 35KT 4055 8468

$$


BINAU

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 9:00 PM EDTSpecial Weather StatementILNAdams, Pike60 min
Apr 27, 9:58 PM EDTSpecial Weather StatementILNScioto62 min
Apr 27, 9:59 PM EDTWind AdvisoryILNAdams, Auglaize, Brown, Butler, Champaign, Clark and 26 more7 hr
Apr 27, 10:36 PM EDTFlash Flood WarningILNAdams, Scioto3 hr
Apr 27, 11:00 PM EDTSpecial Weather StatementILNDarke, Mercer60 min
Apr 27, 11:15 PM EDTSevere Thunderstorm WarningILNDarke, Mercer60 min
Apr 27, 11:58 PM EDTTornado WarningILNAuglaize, Mercer29 min
Apr 28, 2:10 AM EDTSevere Thunderstorm WarningILNChampaign, Clark, Clinton, Fayette, Greene, Madison and 3 more50 min
Apr 28, 2:51 AM EDTSevere Thunderstorm WarningILNDelaware, Fairfield, Fayette, Franklin, Hardin, Hocking and 6 more54 min
Apr 28, 5:50 PM EDTSpecial Weather StatementILNButler, Champaign, Darke, Hamilton, Logan, Miami and 3 more55 min
Apr 28, 5:55 PM EDTSpecial Weather StatementILNBrown, Clermont, Clinton, Fayette, Greene, Highland and 1 more65 min
Apr 28, 6:58 PM EDTSpecial Weather StatementILNAdams, Brown, Clermont, Clinton, Fayette, Greene and 6 more2 hr
Apr 28, 7:26 PM EDTSpecial Weather StatementILNChampaign, Clark, Delaware, Fairfield, Franklin, Hardin and 4 more64 min

Nearby

Tornado Warnings in Ohio, 2011Every tornado warning in 2011Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.