Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 101, NWS Wilmington, OH

May 4, 20124 counties in Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at May 4, 2012, 4:59 PM EDT for 4 counties in Ohio. It was in force for 34 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
May 4, 2012, 4:59 PM EDT (20:59 UTC)
Expired
May 4, 2012, 5:33 PM EDT
In force
34 min
Issued by
NWS Wilmington, OH
Area
Storm-based polygon

Counties Butler County, OH, Clinton County, OH, Greene County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 33 km from the middle of the area, began a volume at 21:03 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 4, 5:01 PM EDTHAIL 0.88Middletown, OH
May 4, 5:13 PM EDTHAIL 0.751 S Springboro, OHDIME TO PENNY SIZE HAIL, ESTIMATED 50 MPH WINDS, AND NEAR ZERO VISIBILITY AT SPRINGBORO HIGH SCHOOL

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 12:00Z, 9.0 hours before the alert went out and 34 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 12:00Z on 2012-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 476 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 12:00Z on 2012-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 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
476 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
540 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
88 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.

499 
WUUS51 KILN 042059
SVRILN
OHC017-027-057-165-042145-
/O.NEW.KILN.SV.W.0101.120504T2059Z-120504T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
459 PM EDT FRI MAY 4 2012

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN BUTLER COUNTY IN SOUTHWEST OHIO...
  NORTHWESTERN CLINTON COUNTY IN SOUTHWEST OHIO...
  NORTHERN WARREN COUNTY IN SOUTHWEST OHIO...
  SOUTHWESTERN GREENE COUNTY IN WEST CENTRAL OHIO...

* UNTIL 545 PM EDT.

* AT 458 PM EDT...RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF
  PRODUCING QUARTER SIZE HAIL AND WINDS TO 60 MPH. THIS STORM WAS
  LOCATED NEAR MONROE...MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SPRINGBORO...
  LEBANON...
  WAYNESVILLE...

IN ADDITION...STATE ROUTE 63 AT STATE ROUTE 741...PEKIN...GENNTOWN...
STATE ROUTE 48 AT STATE ROUTE 73...LYTLE...OREGONIA...CORWIN AND
CAESAR CREEK STATE PARK ARE NEAR THE PATH OF THIS SEVERE
THUNDERSTORM.

THIS INCLUDES THE FOLLOWING INTERSTATES...
I-71 BETWEEN MILE MARKERS 34 AND 49...
I-75 BETWEEN MILE MARKERS 28 AND 40...

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
FRIDAY EVENING FOR SOUTHEAST INDIANA AND NORTHERN KENTUCKY.

&&

LAT...LON 3955 8440 3959 8421 3958 8412 3961 8411
      3964 8387 3940 8386 3942 8439
TIME...MOT...LOC 2059Z 264DEG 25KT 3949 8430

$$
2 follow-up statements
583 
WWUS51 KILN 042110
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
510 PM EDT FRI MAY 4 2012

OHC017-042120-
/O.CAN.KILN.SV.W.0101.000000T0000Z-120504T2145Z/
BUTLER OH-
510 PM EDT FRI MAY 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN BUTLER COUNTY HAS BEEN
CANCELLED...

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

LAT...LON 3956 8430 3959 8421 3958 8412 3961 8411
      3964 8387 3940 8386 3945 8426
TIME...MOT...LOC 2110Z 264DEG 25KT 3950 8420

$$

OHC027-057-165-042145-
/O.CON.KILN.SV.W.0101.000000T0000Z-120504T2145Z/
CLINTON OH-GREENE OH-WARREN OH-
510 PM EDT FRI MAY 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR NORTHERN WARREN...SOUTHWESTERN GREENE AND NORTHWESTERN CLINTON
COUNTIES...

AT 507 PM EDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING QUARTER SIZE HAIL AND WINDS TO 60 MPH. THIS
STORM WAS LOCATED NEAR PEKIN...MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
WAYNESVILLE.

IN ADDITION...GENNTOWN...STATE ROUTE 48 AT STATE ROUTE 73...LYTLE...
OREGONIA...CORWIN...CAESAR CREEK STATE PARK...MOUNT HOLLY AND ROXANNA
ARE NEAR THE PATH OF THIS STORM.

THIS INCLUDES THE FOLLOWING INTERSTATE...
I-71 BETWEEN MILE MARKERS 38 AND 49...

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 3956 8430 3959 8421 3958 8412 3961 8411
      3964 8387 3940 8386 3945 8426
TIME...MOT...LOC 2110Z 264DEG 25KT 3950 8420

$$
303 
WWUS51 KILN 042133
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
533 PM EDT FRI MAY 4 2012

OHC027-057-165-042143-
/O.CAN.KILN.SV.W.0101.000000T0000Z-120504T2145Z/
CLINTON OH-GREENE OH-WARREN OH-
533 PM EDT FRI MAY 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WARREN...SOUTHWESTERN
GREENE AND NORTHWESTERN CLINTON COUNTIES HAS BEEN CANCELLED...

THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

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

LAT...LON 3956 8430 3959 8421 3958 8412 3961 8411
      3964 8387 3940 8386 3945 8426
TIME...MOT...LOC 2133Z 264DEG 25KT 3952 8399

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 2:43 PM EDTSpecial Weather StatementILNAuglaize32 min
May 4, 2:47 PM EDTAreal Flood AdvisoryILNAuglaize88 min
May 4, 3:15 PM EDTSpecial Weather StatementILNHardin30 min
May 4, 3:26 PM EDTAreal Flood AdvisoryILNHardin94 min
May 4, 4:05 PM EDTFlash Flood WarningILNAuglaize, Hardin, Logan65 min
May 4, 4:38 PM EDTSpecial Weather StatementILNButler37 min
May 4, 5:08 PM EDTSevere Thunderstorm WarningILNGreene, Montgomery26 min
May 4, 5:11 PM EDTSpecial Weather StatementILNLogan34 min
May 4, 5:39 PM EDTSpecial Weather StatementILNChampaign36 min
May 4, 5:42 PM EDTAreal Flood AdvisoryILNChampaign, Logan, Union2 hr
May 4, 5:44 PM EDTTornado WarningILNChampaign22 min
May 4, 6:17 PM EDTSpecial Weather StatementILNChampaign28 min
May 4, 6:29 PM EDTSpecial Weather StatementILNMadison31 min
May 4, 6:37 PM EDTSpecial Weather StatementILNMiami23 min
May 4, 6:45 PM EDTSevere Thunderstorm WarningILNFayette, Franklin, Madison, Pickaway45 min
May 4, 6:49 PM EDTAreal Flood AdvisoryILNDelaware, Franklin, Madison, Union116 min
May 4, 6:54 PM EDTSpecial Weather StatementILNWarren66 min
May 4, 7:36 PM EDTAreal Flood AdvisoryILNAuglaize, Champaign, Clark, Greene, Logan, Madison and 4 more5 hr
May 4, 7:50 PM EDTSpecial Weather StatementILNAdams25 min
May 4, 7:53 PM EDTFlash Flood WarningILNChampaign, Clark4 hr
May 4, 7:55 PM EDTAreal Flood AdvisoryILNDelaware, Fairfield, Franklin, Hocking, Licking, Madison and 2 more4 hr

Nearby

Severe Thunderstorm Warnings in Ohio, 2012Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.