Alert archive / Ohio / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 487

July 1, 200123 counties in Ohio; 17 counties in Pennsylvania; 10 counties in West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Jul 1, 2001, 12:00 PM EDT for 23 counties in Ohio; 17 counties in Pennsylvania; 10 counties in West Virginia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 1, 2001, 12:00 PM EDT (16:00 UTC)
Expired
Jul 1, 2001, 6:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 50 counties

Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Guernsey County, OH, Harrison County, OH, Holmes County, OH, Jefferson County, OH, Mahoning County, OH, Medina County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Portage County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Washington County, OH, Wayne County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Fayette County, PA, Forest County, PA, Greene County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Somerset County, PA, Venango County, PA, Warren County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Marion County, WV, Marshall County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Tyler County, WV, Wetzel County, WV, Wood County, WV

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 1, 12:02 PM EDTSevere Thunderstorm WarningPBZButler, Venango58 min
Jul 1, 12:40 PM EDTSevere Thunderstorm WarningPBZColumbiana65 min
Jul 1, 12:49 PM EDTSevere Thunderstorm WarningPBZArmstrong56 min
Jul 1, 1:00 PM EDTSevere Thunderstorm WarningPBZButler60 min
Jul 1, 1:10 PM EDTSevere Thunderstorm WarningPBZAllegheny65 min
Jul 1, 1:28 PM EDTSevere Thunderstorm WarningPBZWestmoreland62 min
Jul 1, 1:35 PM EDTSevere Thunderstorm WarningPBZHarrison, Tuscarawas55 min
Jul 1, 1:50 PM EDTSevere Thunderstorm WarningPBZWashington55 min
Jul 1, 1:53 PM EDTSevere Thunderstorm WarningPBZIndiana67 min
Jul 1, 2:08 PM EDTSevere Thunderstorm WarningPBZGuernsey67 min
Jul 1, 2:14 PM EDTSevere Thunderstorm WarningPBZAllegheny61 min
Jul 1, 2:22 PM EDTFlash Flood WarningPBZAllegheny3 hr
Jul 1, 2:29 PM EDTSevere Thunderstorm WarningPBZWestmoreland61 min
Jul 1, 2:38 PM EDTSevere Thunderstorm WarningPBZBelmont67 min
Jul 1, 2:43 PM EDTSevere Thunderstorm WarningPBZWashington62 min
Jul 1, 2:57 PM EDTSevere Thunderstorm WarningCTPSomerset63 min
Jul 1, 2:57 PM EDTSevere Thunderstorm WarningPBZGreene63 min
Jul 1, 3:04 PM EDTSevere Thunderstorm WarningPBZMarshall56 min
Jul 1, 3:09 PM EDTSevere Thunderstorm WarningPBZMonroe66 min
Jul 1, 3:12 PM EDTSevere Thunderstorm WarningPBZFayette63 min
Jul 1, 3:15 PM EDTSevere Thunderstorm WarningPBZMuskingum, Noble60 min
Jul 1, 3:33 PM EDTSevere Thunderstorm WarningRLXMorgan27 min
Jul 1, 3:48 PM EDTSevere Thunderstorm WarningRLXWashington42 min
Jul 1, 3:55 PM EDTSevere Thunderstorm WarningPBZMonongalia65 min
Jul 1, 4:12 PM EDTSevere Thunderstorm WarningRLXTyler33 min
Jul 1, 4:27 PM EDTSevere Thunderstorm WarningRLXPleasants33 min
Jul 1, 4:31 PM EDTSevere Thunderstorm WarningPBZMarion59 min

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 4.0 hours before the alert went out and 63 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-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 2001-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 963 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2001-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
963 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
881 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

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.

IssuedProductOfficeCountiesLasted
Jul 1, 4:30 PM EDTSevere Thunderstorm WatchSPCWashington5 hr
Jul 1, 12:00 PM EDTSevere Thunderstorm WatchSPCAdams, Bedford, Berks, Blair, Bradford, Bucks and 42 more6 hr

Nearby

Severe Thunderstorm Watches in Ohio, 2001Severe Thunderstorm Watches in Pennsylvania, 2001Severe Thunderstorm Watches in West Virginia, 2001Every 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.