Alert archive / Ohio / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 310, NWS Wilmington, OH

July 29, 20114 counties in Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jul 29, 2011, 8:25 PM EDT for 4 counties in Ohio. It was in force for 50 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
Jul 29, 2011, 8:25 PM EDT (00:25 UTC)
Expired
Jul 29, 2011, 9:15 PM EDT
In force
50 min
Issued by
NWS Wilmington, OH
Area
Storm-based polygon

Counties Fairfield County, OH, Franklin County, OH, Hocking County, OH, Pickaway County, OH

The radar

The Cincinnati radar (KILN), 103 km from the middle of the area, began a volume at 00:28 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
Jul 29, 8:27 PM EDTTSTM WND GST 60Lockbourne, OHAT RICKENBACKER AIRPORT/LCK/.

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

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.4 hours before the alert went out and 100 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 2011-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1532 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, Cncnati-Daytn, OH at 00:00Z on 2011-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.1939Sfc1 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
1532 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
1430 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.0

Open this sounding in Storm Lab

The text

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

581 
WUUS51 KILN 300025
SVRILN
OHC045-049-073-129-300115-
/O.NEW.KILN.SV.W.0310.110730T0025Z-110730T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
825 PM EDT FRI JUL 29 2011

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FAIRFIELD COUNTY IN CENTRAL OHIO...
  SOUTHEASTERN FRANKLIN COUNTY IN CENTRAL OHIO...
  NORTHERN HOCKING COUNTY IN CENTRAL OHIO...
  NORTHERN PICKAWAY COUNTY IN CENTRAL OHIO...

* UNTIL 915 PM EDT.

* AT 824 PM EDT...RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF
  PRODUCING WINDS TO 60 MPH. THIS STORM WAS LOCATED NEAR DUVALL...
  MOVING EAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CANAL WINCHESTER...
  SUGAR GROVE...
  LANCASTER...

IN ADDITION...SLATE RUN METRO PARK...LITHOPOLIS...RINGGOLD...STATE
ROUTE 674 AT STATE ROUTE 188...ROYALTON...CARROLL...AMANDA AND
FAIRFIELD COUNTY AIRPORT ARE NEAR THE PATH OF THIS SEVERE
THUNDERSTORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

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

&&

LAT...LON 3977 8245 3954 8256 3972 8307 3993 8298
TIME...MOT...LOC 0025Z 290DEG 17KT 3977 8292

$$
2 follow-up statements
433 
WWUS51 KILN 300039
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
839 PM EDT FRI JUL 29 2011

OHC045-049-073-129-300115-
/O.CON.KILN.SV.W.0310.000000T0000Z-110730T0115Z/
FAIRFIELD OH-FRANKLIN OH-HOCKING OH-PICKAWAY OH-
839 PM EDT FRI JUL 29 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR NORTHERN PICKAWAY...NORTHERN HOCKING...SOUTHEASTERN FRANKLIN AND
SOUTHERN FAIRFIELD COUNTIES IN CENTRAL OHIO...

AT 837 PM EDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING WINDS TO 60 MPH. THIS STORM WAS LOCATED NEAR
SLATE RUN METRO PARK...MOVING EAST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
SUGAR GROVE AND LANCASTER.

IN ADDITION...RINGGOLD...STATE ROUTE 674 AT STATE ROUTE 188...
ROYALTON...CARROLL...AMANDA...FAIRFIELD COUNTY AIRPORT...US ROUTE 22
AT STATE ROUTE 159 AND CLEARPORT ARE NEAR THE PATH OF THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3986 8284 3977 8245 3954 8256 3972 8307
TIME...MOT...LOC 0039Z 290DEG 17KT 3975 8284

$$
471 
WWUS51 KILN 300112
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
912 PM EDT FRI JUL 29 2011

OHC045-049-073-129-300122-
/O.EXP.KILN.SV.W.0310.000000T0000Z-110730T0115Z/
FAIRFIELD OH-FRANKLIN OH-HOCKING OH-PICKAWAY OH-
912 PM EDT FRI JUL 29 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN PICKAWAY...NORTHERN
HOCKING...SOUTHEASTERN FRANKLIN AND SOUTHERN FAIRFIELD COUNTIES IN
CENTRAL OHIO WILL EXPIRE AT 915 PM EDT...

THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE
SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE.

PLEASE REPORT PREVIOUS WIND DAMAGE OR HAIL TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE...877-633-6772.

LAT...LON 3986 8284 3977 8245 3954 8256 3972 8307
TIME...MOT...LOC 0112Z 290DEG 17KT 3970 8265

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 8:10 PM EDTSpecial Weather StatementILNPickaway50 min
Jul 29, 8:40 PM EDTSpecial Weather StatementILNMontgomery35 min
Jul 29, 8:46 PM EDTSpecial Weather StatementILNLicking59 min
Jul 29, 8:58 PM EDTSpecial Weather StatementILNPickaway32 min
Jul 29, 9:03 PM EDTSpecial Weather StatementILNMontgomery27 min
Jul 29, 11:34 PM EDTAreal Flood AdvisoryILNRoss3 hr
Jul 30, 6:29 PM EDTAreal Flood AdvisoryILNAdams, Scioto2 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.