Alert archive / Ohio / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 313

May 27, 200436 counties in Ohio; 4 counties in Pennsylvania; 27 counties in West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at May 27, 2004, 5:45 PM EDT for 36 counties in Ohio; 4 counties in Pennsylvania; 27 counties in West Virginia. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: May 27, 2004, 5:45 PM EDT (21:45 UTC)
Expired: May 27, 2004, 11:00 PM EDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 67 counties

Athens County, OH, Belmont County, OH, Carroll County, OH, Coshocton County, OH, Crawford County, OH, Delaware County, OH, Fairfield County, OH, Franklin County, OH, Gallia County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Jackson County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Madison County, OH, Marion County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Richland County, OH, Ross County, OH, Scioto County, OH, Tuscarawas County, OH, Union County, OH, Vinton County, OH, Washington County, OH, Wyandot County, OH, Allegheny County, PA, Fayette County, PA, Greene County, PA, Washington County, PA, Barbour County, WV, Braxton County, WV, Brooke County, WV, Calhoun County, WV, Doddridge County, WV, Gilmer County, WV, Hancock County, WV, Harrison County, WV, Jackson County, WV, Lewis County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Preston County, WV, Randolph County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Tyler County, WV, Upshur County, WV, Webster County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV

The radar

The Pittsburgh radar (KPBZ), 159 km from the middle of the area, began a volume at 21:47 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.

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
May 27, 6:21 PM EDT	Severe Thunderstorm Warning	RLX	Washington	24 min
May 27, 6:22 PM EDT	Severe Thunderstorm Warning	PBZ	Noble	23 min
May 27, 6:23 PM EDT	Severe Thunderstorm Warning	PBZ	Monroe	37 min
May 27, 6:45 PM EDT	Tornado Warning	ILN	Ross	60 min
May 27, 6:53 PM EDT	Severe Thunderstorm Warning	RLX	Washington	37 min
May 27, 6:59 PM EDT	Severe Thunderstorm Warning	RLX	Morgan, Perry	31 min
May 27, 7:06 PM EDT	Severe Thunderstorm Warning	RLX	Jackson	24 min
May 27, 7:23 PM EDT	Severe Thunderstorm Warning	RLX	Roane, Wirt	37 min
May 27, 7:26 PM EDT	Severe Thunderstorm Warning	RLX	Morgan, Washington	49 min
May 27, 7:31 PM EDT	Severe Thunderstorm Warning	RLX	Pleasants, Tyler	29 min
May 27, 7:36 PM EDT	Severe Thunderstorm Warning	ILN	Pike	24 min
May 27, 7:39 PM EDT	Severe Thunderstorm Warning	ILN	Scioto	36 min
May 27, 7:41 PM EDT	Tornado Warning	RLX	Roane	34 min
May 27, 7:47 PM EDT	Severe Thunderstorm Warning	RLX	Doddridge, Tyler	43 min
May 27, 7:51 PM EDT	Severe Thunderstorm Warning	RLX	Jackson	39 min
May 27, 7:56 PM EDT	Severe Thunderstorm Warning	ILN	Ross	64 min
May 27, 8:03 PM EDT	Tornado Warning	RLX	Calhoun	42 min
May 27, 8:06 PM EDT	Severe Thunderstorm Warning	RLX	Gallia, Meigs, Vinton	39 min
May 27, 8:11 PM EDT	Severe Thunderstorm Warning	ILN	Pike	64 min
May 27, 8:20 PM EDT	Severe Thunderstorm Warning	RLX	Braxton, Gilmer	40 min
May 27, 8:23 PM EDT	Severe Thunderstorm Warning	RLX	Harrison	37 min
May 27, 8:32 PM EDT	Severe Thunderstorm Warning	RLX	Mason	43 min
May 27, 8:36 PM EDT	Flash Flood Warning	ILN	Pike	114 min
May 27, 8:40 PM EDT	Tornado Warning	RLX	Ritchie, Wirt	35 min
May 27, 8:41 PM EDT	Flash Flood Warning	RLX	Gallia	3 hr
May 27, 8:46 PM EDT	Severe Thunderstorm Warning	RLX	Gallia	29 min
May 27, 8:49 PM EDT	Severe Thunderstorm Warning	ILN	Scioto	26 min
May 27, 8:56 PM EDT	Severe Thunderstorm Warning	RLX	Jackson, Lawrence	34 min
May 27, 8:58 PM EDT	Severe Thunderstorm Warning	RLX	Braxton, Webster	47 min
May 27, 9:00 PM EDT	Flash Flood Warning	ILN	Scioto	2 hr
May 27, 9:11 PM EDT	Severe Thunderstorm Warning	RLX	Calhoun, Gilmer	34 min
May 27, 9:13 PM EDT	Severe Thunderstorm Warning	RLX	Gallia	47 min
May 27, 9:19 PM EDT	Severe Thunderstorm Warning	RLX	Jackson	41 min
May 27, 9:20 PM EDT	Flash Flood Warning	RLX	Jackson, Mason	3 hr
May 27, 9:31 PM EDT	Severe Thunderstorm Warning	RLX	Randolph	44 min
May 27, 9:35 PM EDT	Severe Thunderstorm Warning	RLX	Mason	40 min
May 27, 9:54 PM EDT	Severe Thunderstorm Warning	RLX	Jackson	36 min
May 27, 9:57 PM EDT	Severe Thunderstorm Warning	RLX	Roane	33 min
May 27, 10:02 PM EDT	Severe Thunderstorm Warning	RLX	Webster	43 min
May 27, 10:30 PM EDT	Flash Flood Warning	ILN	Pike	3 hr
May 27, 10:36 PM EDT	Severe Thunderstorm Warning	RLX	Pocahontas, Randolph	39 min
May 27, 10:52 PM EDT	Flash Flood Warning	ILN	Scioto	4 hr

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 9.8 hours before the alert went out and 163 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: 45 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 906 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 27, 2:07 PM EDT	Mesoscale Discussion	SPC	Butler, Clermont, Hamilton, Montgomery, Preble, Warren	113 min
May 27, 2:30 PM EDT	Severe Thunderstorm Watch	SPC	Allen, Auglaize, Butler, Champaign, Clark, Clinton and 15 more	7 hr
May 27, 5:14 PM EDT	Mesoscale Discussion	SPC	Athens, Belmont, Coshocton, Delaware, Fairfield, Franklin and 22 more	91 min
May 27, 7:00 PM EDT	Mesoscale Discussion	SPC	Allen, Auglaize, Butler, Champaign, Clark, Clinton and 11 more	90 min
May 27, 7:13 PM EDT	Mesoscale Discussion	SPC	Athens, Belmont, Coshocton, Delaware, Fairfield, Franklin and 23 more	92 min
May 27, 7:35 PM EDT	Mesoscale Discussion	SPC	Adams, Brown, Clermont, Gallia, Jackson, Lawrence and 2 more	25 min
May 27, 7:55 PM EDT	Tornado Watch	SPC	Adams, Athens, Brown, Clermont, Gallia, Jackson and 5 more	5 hr
May 27, 3:07 PM EDT	Mesoscale Discussion	SPC	Adams, Franklin, York	113 min

Nearby

Severe Thunderstorm Watches in Ohio, 2004 Severe Thunderstorm Watches in West Virginia, 2004 Severe Thunderstorm Watches in Pennsylvania, 2004 Every severe thunderstorm watch in 2004

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.