Alert archive / Ohio / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 424, NWS Cleveland, OH

September 7, 1998Mahoning County, Trumbull County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Sep 7, 1998, 7:26 AM EDT for Mahoning County, Trumbull County, Ohio. It was in force for 59 min. 3 reports 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: Sep 7, 1998, 7:26 AM EDT (11:26 UTC)
Expired: Sep 7, 1998, 8:25 AM EDT
In force: 59 min
Issued by: NWS Cleveland, OH
Area: Whole counties

Counties Mahoning County, OH, Trumbull County, OH

The radar

The Pittsburgh radar (KPBZ), 84 km from the middle of the area, began a volume at 11:30 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.

What was reported inside it

Time	Report	Where	Remark
Sep 7, 7:35 AM EDT	Thunderstorm Wind	Countywide, OH	Numerous trees and power lines were downed.
Sep 7, 7:45 AM EDT	Thunderstorm Wind	Countywide, OH	Many trees, large branches and power lines were downed, especially in the southeast portion of the county.
Sep 7, 7:58 AM EDT	Hail 0.75	Boardman, 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.

Issued	Product	Office	Lasted
Sep 7, 5:00 AM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 11.4 hours before the alert went out and 101 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: 511 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 2224 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

515 
WUUS1 KCLE 071127 RRA
SVRCLE
OHC099-155-071225-

BULLETIN - EAS ACTIVATION/IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
726 AM EDT MON SEP 7 1998

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MAHONING COUNTY IN NORTHEASTERN OHIO
  TRUMBULL COUNTY IN NORTHEASTERN OHIO

* UNTIL 825 AM EDT

* AT 726 AM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF THUNDERSTORMS...THE STRONGEST THUNDERSTORM WAS LOCATED
  FROM BURTON IN GEAUGA COUNTY TO ROOTSTOWN IN PORTAGE COUNTY.
* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  MESOPOTAMIA
  BRISTOLVILLE
  SOUTHINGTON
  NEWTON FALLS
  NORTH JACKSON
  BERLIN CENTER


SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL. GO INSIDE
A STURDY BUILDING AND STAY AWAY FROM WINDOWS

DEB

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 7, 4:01 AM EDT	Severe Thunderstorm Warning	CLE	Lucas	64 min
Sep 7, 4:29 AM EDT	Severe Thunderstorm Warning	CLE	Wood	61 min
Sep 7, 4:53 AM EDT	Severe Thunderstorm Warning	CLE	Sandusky, Seneca	62 min
Sep 7, 5:40 AM EDT	Severe Thunderstorm Warning	CLE	Erie, Huron	60 min
Sep 7, 6:27 AM EDT	Severe Thunderstorm Warning	CLE	Lorain	63 min
Sep 7, 6:40 AM EDT	Severe Thunderstorm Warning	CLE	Medina	65 min
Sep 7, 6:50 AM EDT	Severe Thunderstorm Warning	CLE	Summit	65 min
Sep 7, 7:00 AM EDT	Severe Thunderstorm Warning	CLE	Portage	65 min
Sep 7, 7:13 AM EDT	Severe Thunderstorm Warning	CLE	Geauga	62 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1998 Every severe thunderstorm warning in 1998

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; radar from the NEXRAD Level II archive.