Alert archive / Ohio / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 293, NWS Cleveland, OH

July 21, 1998Wood County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 21, 1998, 6:48 AM EDT for Wood County, Ohio. It was in force for 47 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
Jul 21, 1998, 6:48 AM EDT (10:48 UTC)
Expired
Jul 21, 1998, 7:35 AM EDT
In force
47 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Wood County, OH

What was reported inside it

TimeReportWhereRemark
Jul 21, 7:00 AM EDTThunderstorm WindCountywide, OHSeveral trees were downed, particularly in the northern portion of the county.

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
Jul 21, 6:30 AM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 10.8 hours before the alert went out and 152 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 1998-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLEL10008507005003002001001 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 1998-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 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
4 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
2132 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCLE 211047 RRA
SVRCLE
OHC173-211135-

BULLETIN - EAS ACTIVATION/IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
648 AM EDT TUE JUL 21 1998

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WOOD COUNTY IN NORTHWESTERN OHIO

* UNTIL 735 AM EDT

* AT 645 AM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM IN THE VICINITY OF BOWLING GREEN OR IN THE
  VICINITY OF DUNBRIDGE MOVING SOUTHEAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL MOVE NEAR...
  WALBRIDGE
  PERRYSBURG
  HASKINS
  GRAND RAPIDS

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

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 Jul 21, 2:45 AM EDT, 4 hours 3 minutes earlier.

Area forecast discussion, Jul 21, 2:45 AM EDT, 4 hours 3 minutes before
FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
245 AM EDT TUE JUL 21 1998

FORECAST CHALLENGE...CONVECTION POTENTIAL THROUGH PERIOD.

AT THE MOMENT...IR AND RADAR IMAGERY SHOWING BOW ECHO IN SOUTHERN
ONTARIO AND NORTHERN OH.  SYSTEM WILL STAY WELL NORTH OF CWA.  KILN
AND KIWX SHOWING SOME A SMALL CLUSTER OF TSRA BETWEEN FWA AND LIMA WHICH
ACCORDING TO LAPS DATA IS IN AN AREA OF MOISTURE CONVERGENCE.

MODELS ARE PRETTY SIMILAR WITH THE OVERALL PATTERN.  BERMUDA HIGH
BUILDS IN OVER MUCH OF SOUTHERN OHIO WITH A 700 MB CAP OF 9 TO 10
DEGREES THROUGH MUCH OF THE FORECAST PERIOD.  THIS WILL SUPPRESS
CONVECTION OVER MUCH OF FORECAST AREA...ESPECIALLY SOUTHERN 2/3.
THE MAIN ACTIVITY WILL REMAIN ALONG A NEARLY STATIONARY BOUNDARY IN
SOUTHERN WI/MI AND NORTHERN IL/IN/OH.  THE NORTHERN JET STREAM WILL
PROVIDE THE UPPER LEVEL SUPPORT.  IN FACT ALL THREE MODELS SHOW THE
WHOLE BOUNDARY LIGHTING UP OVERNIGHT TONIGHT.  THE BERMUDA HIGH
BEGINS TO SLIDE SOUTHWARD ON WEDNESDAY AS STATIONARY BOUNDARY DRIFTS
SOUTH INTO NORTHERN AND CENTRAL IL/IN/OH ALONG WITH ASSOCIATED UPPER
LEVEL SUPPORT.

FWC GUIDANCE HAS PRETTY GOOD HANDLE ON POPS AND TEMPS THROUGH PERIOD.
THINK SUMMER TIME POP (30%) NORTH OF DAY AND CMH WOULD BE REASONABLE
FOR TODAY AND ISOLATED OR NO MENTION REST OF CWA.

DAY 094/072 090/072 085 114
CMH 094/073 091/071 084 214
CVG 095/073 091/071 084 114
PHM 095/071 092/072 087 114
 TIPTON

In the hours before

Special weather statement, Jul 21, 4:03 AM EDT, 2 hours 45 minutes before
OHZ003-006>014-017>023-027>033-037-038-047-089-PAZ001>003-210415-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1202 AM EDT TUE JUL 21 1998

THE STORM PREDICTION CENTER INDICATES THAT THERE IS A SLIGHT CHANCE OF
SEVERE THUNDERSTORMS ACROSS NORTHERN OHIO TODAY AND TONIGHT.

SOME THUNDERSTORMS MAY DEVELOP DURING THE HEAT OF THE DAY THIS
AFTERNOON WITH HIGH WINDS AND LARGE HAIL. OTHER THUNDERSTORMS WILL
DEVELOP LATER TONIGHT AHEAD OF A COLD FRONT WHICH WILL PRESS SOUTHWARD
FROM THE UPPER GREAT LAKES TO JUST NORTH OF LAKE ERIE BY DAYBREAK
WEDNESDAY. SEVERE STORMS ARE POSSIBLE AHEAD OF THIS FRONT AS WELL.

SKYWARN ACTIVATION IS POSSIBLE.
Special weather statement, Jul 21, 4:05 AM EDT, 2 hours 43 minutes before
OHZ003-006>014-017>023-027>033-037-038-047-089-PAZ001>003-211500-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE CLEVELAND OH
405 AM EDT TUE JUL 21 1998

THE STORM PREDICTION CENTER INDICATES THAT THERE IS A SLIGHT CHANCE OF
SEVERE THUNDERSTORMS ACROSS NORTHERN OHIO TODAY AND TONIGHT.

SOME THUNDERSTORMS MAY DEVELOP DURING THE HEAT OF THE DAY THIS
AFTERNOON WITH HIGH WINDS AND LARGE HAIL. OTHER THUNDERSTORMS WILL
DEVELOP LATER TONIGHT AHEAD OF A COLD FRONT WHICH WILL PRESS SOUTHWARD
FROM THE UPPER GREAT LAKES TO JUST NORTH OF LAKE ERIE BY DAYBREAK
WEDNESDAY. SEVERE STORMS ARE POSSIBLE AHEAD OF THIS FRONT AS WELL.

SKYWARN ACTIVATION IS POSSIBLE.

(CORRECTED ISSUE TIME)
Special weather statement, Jul 21, 4:05 AM EDT, 2 hours 43 minutes before
OHZ003-006>014-017>023-027>033-037-038-047-089-PAZ001>003-211500-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE CLEVELAND OH
405 AM EDT TUE JUL 21 1998

THE STORM PREDICTION CENTER INDICATES THAT THERE IS A SLIGHT CHANCE OF
SEVERE THUNDERSTORMS ACROSS NORTHERN OHIO TODAY AND TONIGHT.

SOME THUNDERSTORMS MAY DEVELOP DURING THE HEAT OF THE DAY THIS
AFTERNOON WITH HIGH WINDS AND LARGE HAIL. OTHER THUNDERSTORMS WILL
DEVELOP LATER TONIGHT AHEAD OF A COLD FRONT WHICH WILL PRESS SOUTHWARD
FROM THE UPPER GREAT LAKES TO JUST NORTH OF LAKE ERIE BY DAYBREAK
WEDNESDAY. SEVERE STORMS ARE POSSIBLE AHEAD OF THIS FRONT AS WELL.

SKYWARN ACTIVATION IS POSSIBLE.

(CORRECTED ISSUE TIME)

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 6:35 AM EDTSevere Thunderstorm WarningCLELucas35 min
Jul 21, 6:57 AM EDTSevere Thunderstorm WarningCLEOttawa, Sandusky48 min
Jul 21, 7:05 AM EDTSevere Thunderstorm WarningCLEHancock, Seneca45 min
Jul 21, 7:42 AM EDTSevere Thunderstorm WarningCLEErie, Huron48 min
Jul 21, 7:47 AM EDTSevere Thunderstorm WarningCLELorain48 min
Jul 21, 7:55 AM EDTSevere Thunderstorm WarningCLEAshland, Richland45 min
Jul 21, 8:04 AM EDTSevere Thunderstorm WarningCLECrawford, Wyandot46 min
Jul 21, 8:06 AM EDTSevere Thunderstorm WarningCLELucas49 min
Jul 21, 8:22 AM EDTSevere Thunderstorm WarningCLECuyahoga, Lake48 min
Jul 21, 8:25 AM EDTSevere Thunderstorm WarningCLEOttawa50 min
Jul 21, 8:30 AM EDTSevere Thunderstorm WarningCLEGeauga50 min
Jul 21, 9:41 AM EDTSevere Thunderstorm WarningCLEAshland, Wayne49 min
Jul 21, 9:43 AM EDTSevere Thunderstorm WarningCLEMedina47 min
Jul 21, 7:03 PM EDTSevere Thunderstorm WarningCLEWood62 min
Jul 21, 7:05 PM EDTSevere Thunderstorm WarningCLEOttawa65 min
Jul 21, 7:33 PM EDTSevere Thunderstorm WarningCLEErie, Sandusky62 min
Jul 21, 7:46 PM EDTSevere Thunderstorm WarningCLESeneca64 min
Jul 21, 7:52 PM EDTSevere Thunderstorm WarningCLELorain63 min
Jul 21, 7:57 PM EDTSevere Thunderstorm WarningCLEHuron63 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.