Alert archive / Ohio / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 271, NWS Cleveland, OH

June 30, 1998Ottawa County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jun 30, 1998, 2:27 PM EDT for Ottawa County, Ohio. It was in force for 48 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
Jun 30, 1998, 2:27 PM EDT (18:27 UTC)
Expired
Jun 30, 1998, 3:15 PM EDT
In force
48 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Ottawa County, OH

The radar

The Cleveland radar (KCLE), 91 km from the middle of the area, began a volume at 18:31 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

TimeReportWhereRemark
Jun 30, 2:55 PM EDTThunderstorm WindOak Harbor, OHA tree and a telephone pole were downed.

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 nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 6.5 hours before the alert went out and 142 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 12:00Z on 1998-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 776 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 12:00Z on 1998-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -95 square meters per square second.1939587897Sfc1 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
776 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
897 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-95 m²/s²
0-3 km storm-relative helicity
-16 m²/s²
Significant tornado parameter
-0.3
Supercell composite
-2.1

Open this sounding in Storm Lab

The text

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

471 
WUUS1 KCLE 301826 RRA
SVRCLE
OHC123-OHZ521-301915-

BULLETIN - EAS ACTIVATION/IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
227 PM EDT TUE JUN 30 1998

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OTTAWA COUNTY INCLUDING ADJACENT COASTAL WATERS IN NORTHWESTERN OHIO

* UNTIL 315 PM EDT

* AT 226 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 13 MILES EAST OF TOLEDO OR 6 MILES NORTHWEST OF
  LIMESTONE MOVING SOUTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL MOVE NEAR...
  ROCKY RIDGE
  OAK HARBOR
  PORT CLINTON

SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING. GO INSIDE A STURDY BUILDING AND STAY
AWAY FROM WINDOWS

RINGO

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Cleveland, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 30, 3:03 AM EDT, 11 hours 24 minutes earlier.

Area forecast discussion, Jun 30, 3:03 AM EDT, 11 hours 24 minutes before
FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
303 AM EDT TUE JUN 30 1998

05Z SFC ANALYSIS INDICATED A CDFNT EXTENDING FM LHUR SW INTO SERN WI
AND ERN IA.  SCT TSRA HAVE DEVELOPED IN THE LAST FEW HRS ALONG THIS
FEATURE WITH THE HELP OF AN ASSOCIATED H5 VORT MAX SEEN ON THE WV
IMAGERY.  TSRA HAS MOVD S AND E OF FA ATTM.

BY 12Z MODELS SHOW A 950 MB JET AIMED IN WRN FA WITH DECENT MOISTURE
CONVERGENCE AND H8 THTE ADVECTION.  HIGH PRECIP EFFICIENCY VALUES WHICH
MATCHED WELL WITH THE ONGOING ACTIVITY AT 06Z...ARE PROGD TO MOVE BACK
N INTO FA IN RESPONSE TO THE APPROACHING CDFNT AND H5 VORT.  THUS...IT
SEEMS REASONABLE THAT TSRA WL DEVELOP BACK INTO FA AROUND 12Z.  THIS
ACTIVITY SHOULD CONTINUE IN A SCATTERED NATURE THROUGH MUCH OF THE DAY
WITH AN EASTWARD TREND IN THE BACK EDGE OF THE TSRA.  MODELS SHOW AN H8
THTE RIDGE INTO SRN FA AND THE PRESENCE OF DRY AIR AROUND 500 MB.  WITH
STRONG MID LVL WINDS AND WETBULB ZERO VALUES IN THE 9-10KFT RANGE...SVR
TSRA ARE POSSIBLE.  SUGGEST USING SVR WORKING SE OF CVG TO CMH.  A FEW
SPOTS COULD RECIEVE HEAVY RAINFALL BUT NOT WORTHY OF EXTENDING THE
FLOOD WATCH INTO TODAY.

TSRA SHOULD BE OVER BY TONIGHT LEAVING FA WITH ITS FIRST DRY NIGHT IN A
WHILE TONIGHT.  DRY AND COOLER ON WED.

FOR THE 4TH...LOOKS LIKE CHC OF TSRA WITH TEMPS AROUND THE MID 80S.

CVG 83/61/81 500
DAY 83/60/80 400
CMH 83/60/80 600
PMH 84/62/81 600

WILKINSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 8:13 PM EDTFlash Flood WarningCLEHolmes2 hr
Jun 29, 8:34 PM EDTTornado WarningCLEHolmes31 min
Jun 29, 10:47 PM EDTFlash Flood WarningCLEHolmes7 hr
Jun 30, 10:56 AM EDTSevere Thunderstorm WarningCLEWood64 min
Jun 30, 11:03 AM EDTSevere Thunderstorm WarningCLESandusky62 min
Jun 30, 11:58 AM EDTFlash Flood WarningCLEErie, Sandusky3 hr
Jun 30, 12:16 PM EDTSevere Thunderstorm WarningCLEHuron, Lorain64 min
Jun 30, 12:32 PM EDTSevere Thunderstorm WarningCLEMedina63 min
Jun 30, 1:02 PM EDTSevere Thunderstorm WarningCLEWayne63 min
Jun 30, 1:09 PM EDTSevere Thunderstorm WarningCLESummit66 min
Jun 30, 1:21 PM EDTTornado WarningCLESummit64 min
Jun 30, 1:31 PM EDTSevere Thunderstorm WarningCLEStark64 min
Jun 30, 1:43 PM EDTTornado WarningCLEStark67 min
Jun 30, 1:52 PM EDTSevere Thunderstorm WarningCLEMahoning63 min
Jun 30, 2:15 PM EDTSevere Thunderstorm WarningCLEWayne50 min
Jun 30, 2:21 PM EDTTornado WarningCLEErie49 min
Jun 30, 2:36 PM EDTSevere Thunderstorm WarningCLELorain64 min
Jun 30, 3:08 PM EDTSevere Thunderstorm WarningCLECuyahoga, Medina62 min
Jun 30, 3:31 PM EDTFlash Flood WarningCLEErie, Huron, Lorain3 hr
Jun 30, 3:46 PM EDTSevere Thunderstorm WarningCLESummit, Wayne64 min
Jun 30, 3:59 PM EDTSevere Thunderstorm WarningCLEStark66 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.