Alert archive / Ohio / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 759

July 18, 200323 counties in Ohio; 8 counties in Pennsylvania; 6 counties in West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Jul 18, 2003, 1:55 PM EDT for 23 counties in Ohio; 8 counties in Pennsylvania; 6 counties in West Virginia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 18, 2003, 1:55 PM EDT (17:55 UTC)
Expired
Jul 18, 2003, 8:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 37 counties

Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana 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, Muskingum County, OH, Noble County, OH, Perry County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Fayette County, PA, Greene 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

The radar

The Pittsburgh radar (KPBZ), 117 km from the middle of the area, began a volume at 17:58 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

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

IssuedProductOfficeCountiesLasted
Jul 18, 1:55 PM EDTSevere Thunderstorm WarningPBZBeaver65 min
Jul 18, 2:01 PM EDTSevere Thunderstorm WarningPBZTuscarawas59 min
Jul 18, 2:21 PM EDTSevere Thunderstorm WarningPBZCoshocton54 min
Jul 18, 2:33 PM EDTSevere Thunderstorm WarningPBZWashington57 min
Jul 18, 2:39 PM EDTSevere Thunderstorm WarningPBZJefferson66 min
Jul 18, 2:54 PM EDTSevere Thunderstorm WarningPBZBeaver66 min
Jul 18, 3:25 PM EDTSevere Thunderstorm WarningPBZWashington80 min
Jul 18, 3:34 PM EDTSevere Thunderstorm WarningPBZMonroe56 min
Jul 18, 3:39 PM EDTSevere Thunderstorm WarningPBZGuernsey66 min
Jul 18, 4:00 PM EDTSevere Thunderstorm WarningPBZNoble45 min
Jul 18, 4:05 PM EDTSevere Thunderstorm WarningPBZFayette70 min
Jul 18, 4:09 PM EDTSevere Thunderstorm WarningPBZWetzel81 min
Jul 18, 4:17 PM EDTSevere Thunderstorm WarningPBZBelmont73 min
Jul 18, 4:22 PM EDTSevere Thunderstorm WarningPBZWestmoreland53 min
Jul 18, 4:30 PM EDTSevere Thunderstorm WarningPBZGreene60 min
Jul 18, 4:46 PM EDTFlash Flood WarningPBZNoble3 hr
Jul 18, 4:51 PM EDTFlash Flood WarningPBZMonroe3 hr
Jul 18, 5:24 PM EDTSevere Thunderstorm WarningPBZFayette, Greene81 min

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, 5.9 hours before the alert went out and 122 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 2003-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 270 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 2003-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
270 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
1045 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
86 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 18, 1:35 PM EDTMesoscale DiscussionSPCAthens, Belmont, Carroll, Columbiana, Coshocton, Delaware and 26 more115 min
Jul 18, 4:49 PM EDTMesoscale DiscussionSPCAthens, Belmont, Carroll, Coshocton, Fairfield, Guernsey and 12 more116 min
Jul 18, 6:47 PM EDTMesoscale DiscussionSPCAthens, Belmont, Carroll, Coshocton, Delaware, Fairfield and 16 more88 min

Nearby

Severe Thunderstorm Watches in Ohio, 2003Severe Thunderstorm Watches in Pennsylvania, 2003Severe Thunderstorm Watches in West Virginia, 2003Every severe thunderstorm watch in 2003

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.