Alert archive / Ohio / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 409

June 12, 200121 counties in Ohio; 9 counties in Pennsylvania; 6 counties in West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Jun 12, 2001, 5:00 PM EDT for 21 counties in Ohio; 9 counties in Pennsylvania; 6 counties in West Virginia. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Jun 12, 2001, 5:00 PM EDT (21:00 UTC)
Expired: Jun 12, 2001, 9:00 PM EDT
In force: 4 hr
Issued by: the Storm Prediction Center

All 36 counties

Belmont County, OH, Carroll County, OH, Coshocton County, OH, Delaware County, OH, Fairfield County, OH, Franklin County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Monroe County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Tuscarawas County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Fayette County, PA, Greene County, PA, Indiana County, PA, Somerset County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Marshall County, WV, Monongalia County, WV, Ohio County, WV, Wetzel County, WV

Warnings issued inside it

8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 12, 5:52 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton	53 min
Jun 12, 6:08 PM EDT	Severe Thunderstorm Warning	PBZ	Muskingum	67 min
Jun 12, 6:23 PM EDT	Severe Thunderstorm Warning	PBZ	Harrison	67 min
Jun 12, 6:35 PM EDT	Severe Thunderstorm Warning	ILN	Franklin	55 min
Jun 12, 7:02 PM EDT	Severe Thunderstorm Warning	ILN	Pickaway	58 min
Jun 12, 7:36 PM EDT	Severe Thunderstorm Warning	RLX	Morgan	39 min
Jun 12, 7:37 PM EDT	Severe Thunderstorm Warning	PBZ	Noble	53 min
Jun 12, 8:41 PM EDT	Flash Flood Warning	RLX	Perry	3 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 9.0 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: 397 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 813 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 12, 3:30 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Bedford, Berks, Blair, Cambria, Centre and 18 more	6 hr

Nearby

Severe Thunderstorm Watches in Ohio, 2001 Severe Thunderstorm Watches in Pennsylvania, 2001 Severe Thunderstorm Watches in West Virginia, 2001 Every severe thunderstorm watch in 2001

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.