Alert archive / Ohio / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 21, NWS Wilmington, OH

April 29, 2014Delaware County, Franklin County, Union County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Apr 29, 2014, 7:58 PM EDT for Delaware County, Franklin County, Union County, Ohio. It was in force for 62 min. 6 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: Apr 29, 2014, 7:58 PM EDT (23:58 UTC)
Expired: Apr 29, 2014, 9:00 PM EDT
In force: 62 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Delaware County, OH, Franklin County, OH, Union County, OH

The radar

The Cincinnati radar (KILN), 112 km from the middle of the area, began a volume at 00:00 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

Time	Report	Where	Remark
Apr 29, 7:58 PM EDT	TSTM WND DMG	Plain City, OH	TREES DOWNED
Apr 29, 8:03 PM EDT	TSTM WND DMG	Ene Dublin, OH	DOWNED TREE LIMBS AND POWER LINES BLOCKED THE ROADWAY NEAR BRAND AND COFFMAN
Apr 29, 8:06 PM EDT	TSTM WND GST 61	Kosu Osu Airport, OH
Apr 29, 8:12 PM EDT	TSTM WND GST 60	4 Nw Westerville, OH
Apr 29, 8:17 PM EDT	TSTM WND GST 61	Kdlz Delaware Apt, OH
Apr 29, 8:21 PM EDT	TSTM WND DMG	Delaware, OH	A ROOF WAS BLOWN OFF OF A STRUCTURE IN DELAWARE DUE TO THUNDERSTORM WINDS.

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, 12.0 hours before the alert went out and 110 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 178 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 493 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 22 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

529 
WUUS51 KILN 292358
SVRILN
OHC041-049-159-300100-
/O.NEW.KILN.SV.W.0021.140429T2358Z-140430T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
758 PM EDT TUE APR 29 2014

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  UNION COUNTY IN CENTRAL OHIO...
  NORTHERN FRANKLIN COUNTY IN CENTRAL OHIO...
  DELAWARE COUNTY IN CENTRAL OHIO...

* UNTIL 900 PM EDT.

* AT 757 PM EDT...RADAR INDICATED SEVERE THUNDERSTORMS LOCATED ALONG
  A LINE EXTENDING FROM CHUCKERY TO 5 MILES SOUTHWEST OF GRANDVIEW
  HEIGHTS...MOVING NORTHEAST AT 50 MPH.

  STORM HAZARDS INCLUDE...
  WINDS TO 60 MPH...

* LOCATIONS IMPACTED INCLUDE...
  MARYSVILLE...
  OHIO STATE UNIVERSITY...
  DUBLIN...
  WORTHINGTON...
  GAHANNA...
  EASTON...
  POWELL...
  POLARIS...
  WESTERVILLE...
  NEW ALBANY...
  RICHWOOD...
  DELAWARE...

IN ADDITION...MILFORD CENTER...UNIONVILLE CENTER...GRANDVIEW
HEIGHTS...US ROUTE 33 AT US ROUTE 42...NEW DOVER...CLINTONVILLE...
WATKINS AND RIVERLEA ARE NEAR THE PATH OF THESE SEVERE THUNDERSTORMS.

THIS INCLUDES THE FOLLOWING INTERSTATE...
I-71 BETWEEN MILE MARKERS 109 AND 139...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER IN A STURDY BUILDING. STAY AWAY FROM WINDOWS AND DOORS
UNTIL THESE STORMS HAVE PASSED.

TO REPORT SEVERE WEATHER...GO TO OUR WEBSITE AT WEATHER.GOV/ILN AND
SUBMIT YOUR REPORT VIA SOCIAL MEDIA...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 4045 8324 4044 8303 4042 8301 4042 8293
      4036 8292 4035 8274 4012 8276 3999 8285
      3995 8306 4008 8304 4008 8321 4011 8321
      4011 8350 4022 8349 4051 8340 4051 8325
TIME...MOT...LOC 2358Z 213DEG 43KT 4012 8337 3992 8309

HAIL...<0.75IN
WIND...60MPH

$$

HATZOS

3 follow-up statements

280 
WWUS51 KILN 300016
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
816 PM EDT TUE APR 29 2014

OHC041-049-159-300100-
/O.CON.KILN.SV.W.0021.000000T0000Z-140430T0100Z/
DELAWARE OH-FRANKLIN OH-UNION OH-
816 PM EDT TUE APR 29 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR EASTERN UNION...NORTHEASTERN FRANKLIN AND DELAWARE COUNTIES IN
CENTRAL OHIO...

AT 813 PM EDT...RADAR CONTINUED TO INDICATE SEVERE THUNDERSTORMS
LOCATED ALONG A LINE EXTENDING FROM MAGNETIC SPRINGS TO 
POLARIS...MOVING NORTHEAST AT 60 MPH. WINDS OF OVER 60 MPH WERE 
MEASURED AT THE OHIO STATE UNIVERSITY AIRPORT NEAR DUBLIN.

STORM HAZARDS INCLUDE...
WINDS TO 60 MPH...

LOCATIONS IMPACTED INCLUDE...
SUNBURY AND ASHLEY.

IN ADDITION...ESSEX...ALUM CREEK STATE PARK...CENTER VILLAGE...
DELAWARE STATE PARK...GALENA...STATE ROUTE 229 AT US ROUTE 23...
LEONARDSBURG AND KILBOURNE ARE NEAR THE PATH OF THESE STORMS.

THIS INCLUDES THE FOLLOWING INTERSTATE...
I-71 BETWEEN MILE MARKERS 109 AND 139...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER IN A STURDY BUILDING. STAY AWAY FROM WINDOWS AND DOORS
UNTIL THESE STORMS HAVE PASSED.

TO REPORT SEVERE WEATHER...GO TO OUR WEBSITE AT WEATHER.GOV/ILN AND
SUBMIT YOUR REPORT VIA SOCIAL MEDIA...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 4045 8324 4044 8303 4042 8301 4042 8293
      4036 8292 4035 8274 4011 8277 3999 8285
      3995 8306 4008 8304 4008 8313 4011 8321
      4022 8334 4051 8334 4051 8325
TIME...MOT...LOC 0016Z 209DEG 53KT 4040 8318 4015 8295

HAIL...<0.75IN
WIND...60MPH

$$

HATZOS

183 
WWUS51 KILN 300036
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
836 PM EDT TUE APR 29 2014

OHC159-300046-
/O.CAN.KILN.SV.W.0021.000000T0000Z-140430T0100Z/
UNION OH-
836 PM EDT TUE APR 29 2014

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN UNION COUNTY IN
CENTRAL OHIO HAS BEEN CANCELLED...

SEVERE WINDS ARE NO LONGER EXPECTED IN UNION COUNTY.

PLEASE REPORT PREVIOUS WIND DAMAGE OR HAIL TO THE NATIONAL WEATHER
SERVICE BY GOING TO OUR WEBSITE AT WEATHER.GOV/ILN AND SUBMITTING
YOUR REPORT VIA SOCIAL MEDIA.

LAT...LON 4042 8293 4036 8292 4035 8274 4011 8277
      3999 8285 4006 8292 4026 8298
TIME...MOT...LOC 0036Z 216DEG 33KT 4036 8291 4015 8276

$$

OHC041-049-300100-
/O.CON.KILN.SV.W.0021.000000T0000Z-140430T0100Z/
DELAWARE OH-FRANKLIN OH-
836 PM EDT TUE APR 29 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR NORTHEASTERN FRANKLIN AND EASTERN DELAWARE COUNTIES IN CENTRAL
OHIO...

AT 834 PM EDT...RADAR CONTINUED TO INDICATE SEVERE THUNDERSTORMS
LOCATED ALONG A LINE EXTENDING FROM KILBOURNE TO CENTER VILLAGE...
MOVING NORTHEAST AT 40 MPH.

STORM HAZARDS INCLUDE...
WINDS TO 60 MPH...

THESE STORMS WILL AFFECT MAINLY RURAL AREAS OF EASTERN DELAWARE AND
NORTHEASTERN FRANKLIN COUNTIES...INCLUDING OLIVE GREEN.

THIS INCLUDES THE FOLLOWING INTERSTATE...
I-71 BETWEEN MILE MARKERS 124 AND 139...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER IN A STURDY BUILDING. STAY AWAY FROM WINDOWS AND DOORS
UNTIL THESE STORMS HAVE PASSED.

TO REPORT SEVERE WEATHER...GO TO OUR WEBSITE AT WEATHER.GOV/ILN AND
SUBMIT YOUR REPORT VIA SOCIAL MEDIA...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 4042 8293 4036 8292 4035 8274 4011 8277
      3999 8285 4006 8292 4026 8298
TIME...MOT...LOC 0036Z 216DEG 33KT 4036 8291 4015 8276

HAIL...<0.75IN
WIND...60MPH

$$

HATZOS

844 
WWUS51 KILN 300046
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
846 PM EDT TUE APR 29 2014

OHC041-049-300056-
/O.CAN.KILN.SV.W.0021.000000T0000Z-140430T0100Z/
DELAWARE OH-FRANKLIN OH-
846 PM EDT TUE APR 29 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN FRANKLIN AND
EASTERN DELAWARE COUNTIES IN CENTRAL OHIO HAS BEEN CANCELLED...

THE STORMS HAVE MOVED OUT OF THE WARNED AREA AND 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 GOING TO OUR WEBSITE AT WEATHER.GOV/ILN AND SUBMITTING
YOUR REPORT VIA SOCIAL MEDIA.

LAT...LON 4042 8293 4036 8292 4035 8274 4011 8277
      3999 8285 4006 8292 4026 8298
TIME...MOT...LOC 0046Z 216DEG 33KT 4043 8284 4022 8269

$$

HATZOS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 8:41 PM EDT	Flash Flood Watch	ILN	Clermont, Hamilton	8 hr
Apr 29, 2:48 AM EDT	Areal Flood Advisory	ILN	Brown, Clermont	3 hr
Apr 29, 3:33 AM EDT	Severe Thunderstorm Warning	ILN	Adams, Brown, Highland	27 min
Apr 29, 3:45 AM EDT	Areal Flood Advisory	ILN	Adams, Brown, Clinton, Highland	3 hr
Apr 29, 10:25 AM EDT	River Flood Warning	ILN	Adams	9 hr
Apr 29, 5:36 PM EDT	Special Weather Statement	ILN	Preble	24 min
Apr 29, 5:50 PM EDT	Special Weather Statement	ILN	Mercer	25 min
Apr 29, 5:57 PM EDT	Special Weather Statement	ILN	Darke	33 min
Apr 29, 6:27 PM EDT	Severe Thunderstorm Warning	ILN	Clermont, Hamilton	33 min
Apr 29, 6:34 PM EDT	Severe Thunderstorm Warning	ILN	Brown, Clermont, Highland	26 min
Apr 29, 6:47 PM EDT	Severe Thunderstorm Warning	ILN	Brown, Butler, Clermont, Clinton, Hamilton, Highland and 1 more	43 min
Apr 29, 7:11 PM EDT	Severe Thunderstorm Warning	ILN	Clark, Fayette, Greene, Madison	49 min
Apr 29, 7:39 PM EDT	Severe Thunderstorm Warning	ILN	Champaign, Clark, Franklin, Madison, Pickaway	51 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2014 Every severe thunderstorm warning in 2014

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.