Alert archive / Ohio / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 252, NWS Wilmington, OH

August 4, 2008Ross County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Aug 4, 2008, 11:41 PM EDT for Ross County, Ohio. It was in force for 35 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: Aug 4, 2008, 11:41 PM EDT (03:41 UTC)
Expired: Aug 5, 2008, 12:16 AM EDT
In force: 35 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon

County Ross County, OH

The radar

The Cincinnati radar (KILN), 87 km from the middle of the area, began a volume at 03:44 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.

Issued	Product	Office	Lasted
Aug 4, 10:43 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 3.7 hours before the alert went out and 85 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: 128 J/kg
Mixed-layer CIN: -227 J/kg
Mixed-layer LCL: 1461 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KILN 050341
SVRILN
OHC141-050430-
/O.NEW.KILN.SV.W.0252.080805T0341Z-080805T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
1141 PM EDT MON AUG 4 2008

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN ROSS COUNTY IN SOUTHWEST OHIO...

* UNTIL 1230 AM EDT.

* AT 1139 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL AND WINDS
  TO 60 MPH. THIS STORM WAS LOCATED NEAR CHILLICOTHE...MOVING
  SOUTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF EASTERN
  ROSS COUNTY...INCLUDING MOORESVILLE...LONDONDERRY AND RICHMOND
  DALE.

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 400 AM EDT
TUESDAY MORNING FOR WEST CENTRAL OHIO.

LAT...LON 3916 8276 3915 8277 3916 8280 3936 8309
      3947 8299 3946 8287 3939 8274 3938 8275
      3930 8274
TIME...MOT...LOC 0341Z 308DEG 27KT 3938 8293

$$

1 follow-up statement

000 
WWUS51 KILN 050416
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
1216 AM EDT TUE AUG 5 2008

OHC141-050426-
/O.CAN.KILN.SV.W.0252.000000T0000Z-080805T0430Z/
ROSS OH-
1216 AM EDT TUE AUG 5 2008

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

THE AREA OF THUNDERSTORMS HAS WEAKENED...THEREFORE THE SEVERE 
THUNDERSTORM WARNING HAS BEEN CANCELLED.

BRIEF GUSTY WINDS AND HEAVY RAIN WILL CONTINUE WITH THE 
THUNDERSTORMS...AS THEY MOVE SOUTH ACROSS SOUTHERN ROSS COUNTY 
THROUGH 1230 AM.

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

LAT...LON 3916 8276 3915 8277 3916 8280 3936 8309
      3947 8299 3946 8287 3939 8274 3938 8275
      3930 8274
TIME...MOT...LOC 0416Z 308DEG 27KT 3922 8266

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 12:25 AM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Darke, Mercer, Shelby	50 min
Aug 5, 12:42 AM EDT	Severe Thunderstorm Warning	ILN	Darke, Preble	48 min
Aug 5, 1:11 AM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Champaign, Darke, Hardin, Logan, Shelby	49 min
Aug 5, 1:52 AM EDT	Severe Thunderstorm Warning	ILN	Champaign, Clark, Delaware, Franklin, Hardin, Logan and 2 more	38 min
Aug 5, 2:30 AM EDT	Severe Thunderstorm Warning	ILN	Delaware, Fairfield, Franklin, Licking, Madison, Pickaway and 1 more	45 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2008 Every severe thunderstorm warning in 2008

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.