Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 252, NWS Wilmington, OH

August 9, 2012Delaware County, Franklin County, Licking County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Aug 9, 2012, 8:12 PM EDT for Delaware County, Franklin County, Licking County, Ohio. It was in force for 33 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: Aug 9, 2012, 8:12 PM EDT (00:12 UTC)
Expired: Aug 9, 2012, 8:45 PM EDT
In force: 33 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon

Counties Delaware County, OH, Franklin County, OH, Licking County, OH

The radar

The Cincinnati radar (KILN), 130 km from the middle of the area, began a volume at 00:14 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
Aug 9, 8:40 PM EDT	TSTM WND DMG	Hartford, OH	TREES AND WIRES DOWN. TIME ESTIMATED BY RADAR.

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Aug 9, 4:41 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.2 hours before the alert went out and 128 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: 339 J/kg
Mixed-layer CIN: -117 J/kg
Mixed-layer LCL: 841 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

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

631 
WUUS51 KILN 100012
SVRILN
OHC041-049-089-100045-
/O.NEW.KILN.SV.W.0252.120810T0012Z-120810T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
812 PM EDT THU AUG 9 2012

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN DELAWARE COUNTY IN CENTRAL OHIO...
  NORTHEASTERN FRANKLIN COUNTY IN CENTRAL OHIO...
  NORTHWESTERN LICKING COUNTY IN CENTRAL OHIO...

* UNTIL 845 PM EDT.

* AT 810 PM EDT...RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF
  PRODUCING QUARTER SIZE HAIL AND WINDS TO 60 MPH. THIS STORM WAS
  LOCATED NEAR CENTER VILLAGE...MOVING NORTHEAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  JOHNSTOWN...

IN ADDITION...CENTER VILLAGE...US ROUTE 62 AT STATE ROUTE 661 AND
HARTFORD 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 4007 8283 4014 8293 4031 8275 4028 8274
      4027 8252 4027 8249 4025 8245
TIME...MOT...LOC 0012Z 230DEG 12KT 4012 8284

$$
ASL

2 follow-up statements

302 
WWUS51 KILN 100032
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
832 PM EDT THU AUG 9 2012

OHC041-049-089-100045-
/O.CON.KILN.SV.W.0252.000000T0000Z-120810T0045Z/
DELAWARE OH-FRANKLIN OH-LICKING OH-
832 PM EDT THU AUG 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR NORTHWESTERN LICKING...NORTHEASTERN FRANKLIN AND SOUTHEASTERN
DELAWARE COUNTIES IN CENTRAL OHIO...

AT 829 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 CENTER VILLAGE...MOVING NORTHEAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
JOHNSTOWN.

IN ADDITION...US ROUTE 62 AT STATE ROUTE 661 AND HARTFORD 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 4007 8283 4014 8293 4031 8275 4028 8274
      4027 8252 4027 8249 4025 8245
TIME...MOT...LOC 0032Z 230DEG 12KT 4016 8277

$$
ASL

045 
WWUS51 KILN 100044
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
844 PM EDT THU AUG 9 2012

OHC041-049-089-100055-
/O.EXP.KILN.SV.W.0252.000000T0000Z-120810T0045Z/
DELAWARE OH-FRANKLIN OH-LICKING OH-
844 PM EDT THU AUG 9 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LICKING...
NORTHEASTERN FRANKLIN AND SOUTHEASTERN DELAWARE COUNTIES IN CENTRAL
OHIO HAS EXPIRED...

THE THUNDERSTORM IS MOVING OUT OF THE WARNED AREA...THEREFORE THE
SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE.

GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS STORM.

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

LAT...LON 4007 8283 4014 8293 4031 8275 4028 8274
      4027 8252 4027 8249 4025 8245
TIME...MOT...LOC 0045Z 230DEG 12KT 4019 8273

$$
ASL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 8:10 PM EDT	Special Weather Statement	ILN	Licking	35 min
Aug 9, 8:26 PM EDT	Areal Flood Advisory	ILN	Delaware, Fairfield, Franklin, Licking, Madison, Pickaway and 1 more	2 hr
Aug 9, 10:54 PM EDT	Special Weather Statement	ILN	Mercer	51 min
Aug 9, 10:59 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Mercer, Shelby	61 min
Aug 9, 11:41 PM EDT	Areal Flood Advisory	ILN	Auglaize, Mercer	2 hr
Aug 10, 12:38 AM EDT	Special Weather Statement	ILN	Shelby	37 min
Aug 10, 12:43 PM EDT	Special Weather Statement	ILN	Licking	32 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2012 Every 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.