Alert archive / Ohio / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 416, NWS Cleveland, OH

September 7, 1998Erie County, Huron County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Sep 7, 1998, 5:40 AM EDT for Erie County, Huron County, Ohio. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 7, 1998, 5:40 AM EDT (09:40 UTC)
Expired
Sep 7, 1998, 6:40 AM EDT
In force
60 min
Issued by
NWS Cleveland, OH
Area
Whole counties

Counties Erie County, OH, Huron County, OH

The radar

The Cleveland radar (KCLE), 67 km from the middle of the area, began a volume at 09:40 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.

The watch it was issued in

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

IssuedProductOfficeLasted
Sep 7, 5:00 AM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 9.7 hours before the alert went out and 172 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, Detroit, MI at 00:00Z on 1998-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1419 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, Detroit, MI at 00:00Z on 1998-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 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
1419 J/kg
Mixed-layer CIN
-179 J/kg
Mixed-layer LCL
1554 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

955 
WUUS1 KCLE 070941 RRA
SVRCLE
OHC043-077-OHZ522-071040-

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

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ERIE COUNTY INCLUDING ADJACENT COASTAL WATERS IN NORTH CENTRAL OHIO
  HURON COUNTY IN NORTH CENTRAL OHIO

* UNTIL 640 AM EDT

* AT 537 AM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 16 MILES SOUTHWEST OF NORWALK OR 7 MILES WEST OF
  DELPHI MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL MOVE NEAR...
  DELPHI
  GREENWICH
  NEW LONDON
  CASTALIA
  PARKERTOWN
  KIMBALL

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.

IssuedProductOfficeCountiesLasted
Sep 7, 4:01 AM EDTSevere Thunderstorm WarningCLELucas64 min
Sep 7, 4:29 AM EDTSevere Thunderstorm WarningCLEWood61 min
Sep 7, 4:53 AM EDTSevere Thunderstorm WarningCLESandusky, Seneca62 min
Sep 7, 6:27 AM EDTSevere Thunderstorm WarningCLELorain63 min
Sep 7, 6:40 AM EDTSevere Thunderstorm WarningCLEMedina65 min
Sep 7, 6:50 AM EDTSevere Thunderstorm WarningCLESummit65 min
Sep 7, 7:00 AM EDTSevere Thunderstorm WarningCLEPortage65 min
Sep 7, 7:13 AM EDTSevere Thunderstorm WarningCLEGeauga62 min
Sep 7, 7:26 AM EDTSevere Thunderstorm WarningCLEMahoning, Trumbull59 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1998Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.