Alert archive / Ohio / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 166, NWS Pittsburgh, PA

October 13, 1999Jefferson County, Ohio

NWS Pittsburgh, PA issued this severe thunderstorm warning at Oct 13, 1999, 6:48 PM EDT for Jefferson County, Ohio. It was in force for 42 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Oct 13, 1999, 6:48 PM EDT (22:48 UTC)
Expired
Oct 13, 1999, 7:30 PM EDT
In force
42 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Jefferson County, OH

What was reported inside it

TimeReportWhereRemark
Oct 13, 7:00 PM EDTHail 0.75Steubenville, OH

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 13, 3:45 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.8 hours before the alert went out and 56 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 1999-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 216 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 1999-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 300 square meters per square second.19395878Sfc1 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
216 J/kg
Mixed-layer CIN
-269 J/kg
Mixed-layer LCL
757 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
300 m²/s²
0-3 km storm-relative helicity
302 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 13, 5:52 PM EDTSevere Thunderstorm WarningPBZMercer58 min
Oct 13, 6:04 PM EDTSevere Thunderstorm WarningPBZLawrence56 min
Oct 13, 6:15 PM EDTSevere Thunderstorm WarningPBZVenango65 min
Oct 13, 6:36 PM EDTSevere Thunderstorm WarningPBZBeaver64 min
Oct 13, 6:40 PM EDTSevere Thunderstorm WarningPBZArmstrong, Butler, Mercer60 min
Oct 13, 7:03 PM EDTSevere Thunderstorm WarningPBZWashington57 min
Oct 13, 7:11 PM EDTSevere Thunderstorm WarningPBZAllegheny59 min
Oct 13, 7:26 PM EDTSevere Thunderstorm WarningPBZWestmoreland64 min
Oct 13, 7:47 PM EDTSevere Thunderstorm WarningPBZIndiana63 min
Oct 13, 4:50 PM EDTSevere Thunderstorm WarningPBZCoshocton60 min
Oct 13, 5:39 PM EDTSevere Thunderstorm WarningPBZCoshocton, Muskingum61 min
Oct 13, 5:43 PM EDTSevere Thunderstorm WarningPBZCarroll, Columbiana57 min
Oct 13, 5:47 PM EDTSevere Thunderstorm WarningPBZTuscarawas63 min
Oct 13, 6:02 PM EDTSevere Thunderstorm WarningPBZGuernsey58 min
Oct 13, 6:11 PM EDTSevere Thunderstorm WarningPBZHarrison59 min
Oct 13, 7:06 PM EDTSevere Thunderstorm WarningPBZMonroe64 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1999Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.