Alert archive / Ohio / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 105, NWS Wilmington, OH

June 9, 2009Darke County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jun 9, 2009, 2:31 AM EDT for Darke County, Ohio. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 9, 2009, 2:31 AM EDT (06:31 UTC)
Expired: Jun 9, 2009, 3:00 AM EDT
In force: 29 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon

County Darke County, OH

The radar

The Cincinnati radar (KILN), 105 km from the middle of the area, began a volume at 06:30 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 6.5 hours before the alert went out and 105 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: 1053 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 1428 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 9, 1:59 AM EDT, 32 minutes earlier.

Area forecast discussion, Jun 9, 1:59 AM EDT, 32 minutes before

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Hazardous weather outlook, Jun 8, 12:00 PM EDT, 14 hours 31 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WILMINGTON OH
1200 PM EDT MON JUN 8 2009

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046-
051>056-060>065-070>074-077>082-088-091600-
WAYNE-FAYETTE IN-UNION IN-FRANKLIN IN-RIPLEY-DEARBORN-OHIO-
SWITZERLAND-CARROLL-GALLATIN-BOONE-KENTON-CAMPBELL-OWEN-GRANT-
PENDLETON-BRACKEN-ROBERTSON-MASON-LEWIS-HARDIN-MERCER-AUGLAIZE-DARKE-
SHELBY-LOGAN-UNION OH-DELAWARE-MIAMI-CHAMPAIGN-CLARK-MADISON-
FRANKLIN OH-LICKING-PREBLE-MONTGOMERY-GREENE-FAYETTE OH-PICKAWAY-
FAIRFIELD-BUTLER-WARREN-CLINTON-ROSS-HOCKING-HAMILTON-CLERMONT-BROWN-
HIGHLAND-ADAMS-PIKE-SCIOTO-
1200 PM EDT MON JUN 8 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL
INDIANA...SOUTHEAST INDIANA...NORTHEAST KENTUCKY...NORTHERN
KENTUCKY...CENTRAL OHIO...MIAMI VALLEY OF OHIO...SOUTH CENTRAL
OHIO...SOUTHWEST OHIO AND WEST CENTRAL OHIO.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

ISOLATED TO SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON
AHEAD OF AN APPROACHING COLD FRONT. A FEW OF THE STORMS MAY BECOME
STRONG TO SEVERE LATE THIS AFTERNOON AND INTO THE OVERNIGHT
HOURS...WITH HAIL AND DAMAGING WINDS POSSIBLE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

WOODRUM

In the hours before

Special weather statement, Jun 8, 11:44 PM EDT, 2 hours 47 minutes before

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Local storm report, Jun 9, 12:20 AM EDT, 2 hours 11 minutes before

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Special weather statement, Jun 9, 12:47 AM EDT, 1 hour 44 minutes before

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Special weather statement, Jun 9, 1:54 AM EDT, 37 minutes before

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Local storm report, Jun 9, 2:17 AM EDT, 14 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 11:59 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Mercer	46 min
Jun 9, 2:58 AM EDT	Severe Thunderstorm Warning	ILN	Darke	47 min
Jun 9, 3:50 AM EDT	Severe Thunderstorm Warning	ILN	Preble	25 min
Jun 9, 4:52 AM EDT	Areal Flood Advisory	ILN	Montgomery, Preble	3 hr
Jun 9, 4:57 AM EDT	Severe Thunderstorm Warning	ILN	Montgomery	48 min
Jun 9, 5:34 AM EDT	Severe Thunderstorm Warning	ILN	Clinton, Greene, Warren	41 min
Jun 9, 5:57 AM EDT	Severe Thunderstorm Warning	ILN	Clinton, Warren	48 min
Jun 9, 7:13 AM EDT	Severe Thunderstorm Warning	ILN	Licking	17 min
Jun 9, 2:44 PM EDT	Severe Thunderstorm Warning	ILN	Pike	46 min
Jun 9, 3:16 PM EDT	Severe Thunderstorm Warning	ILN	Hocking, Ross	44 min
Jun 9, 3:23 PM EDT	Severe Thunderstorm Warning	ILN	Pike	37 min
Jun 9, 3:46 PM EDT	Areal Flood Advisory	ILN	Pike	78 min
Jun 9, 3:53 PM EDT	Severe Thunderstorm Warning	ILN	Highland	52 min
Jun 9, 4:10 PM EDT	Severe Thunderstorm Warning	ILN	Hocking, Ross	50 min
Jun 9, 4:22 PM EDT	Areal Flood Advisory	ILN	Highland	23 min
Jun 9, 4:33 PM EDT	Severe Thunderstorm Warning	ILN	Adams, Brown, Highland	42 min
Jun 9, 4:43 PM EDT	Areal Flood Advisory	ILN	Ross	47 min
Jun 9, 4:43 PM EDT	Flash Flood Warning	ILN	Highland	80 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2009 Every severe thunderstorm warning in 2009

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.