Alert archive / Ohio / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 42, NWS Cleveland, OH

July 6, 1999Cuyahoga County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 6, 1999, 3:11 PM EDT for Cuyahoga County, Ohio. It was in force for 64 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: Jul 6, 1999, 3:11 PM EDT (19:11 UTC)
Expired: Jul 6, 1999, 4:15 PM EDT
In force: 64 min
Issued by: NWS Cleveland, OH
Area: Whole counties

County Cuyahoga County, OH

What was reported inside it

Time	Report	Where	Remark
Jul 6, 3:20 PM EDT	Thunderstorm Wind	North Olmsted, OH	Many trees and large limbs downed. A 20 foot by 40 foot pavilion at a housing development was also destroyed.
Jul 6, 3:32 PM EDT	Thunderstorm Wind 50	Garfield Hgts, OH	A 58 mph wind gust was measured in Garfield Heights.
Jul 6, 3:35 PM EDT	Hail 1	Parma, 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
Jul 6, 3:00 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 7.2 hours before the alert went out and 178 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: 1407 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 883 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: -40 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 061911 RRA
SVRCLE
OHC035-062015-

BULLETIN - EAS ACTIVATION/IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
311 PM EDT TUE JUL 6 1999

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CUYAHOGA COUNTY IN NORTHEASTERN OHIO

* UNTIL 415 PM EDT

* AT 309 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES NORTHEAST OF ELYRIA OR 4 MILES WEST OF
  NORTH OLMSTED... MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL MOVE NEAR...
  NORTH OLMSTED
  CLEVELAND HOPKINS ARPT
  PARMA
  DOWNTOWN CLEVELAND
  NORTH ROYALTON
  BROADVIEW HEIGHTS
  BRECKSVILLE
  BEDFORD


SEVERE TH4UNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL. GO INSIDE
A STURDY BUILDING AND STAY AWAY FROM WINDOWS.
$$
BM

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 6, 9:40 AM EDT, 5 hours 31 minutes earlier.

Area forecast discussion, Jul 6, 9:40 AM EDT, 5 hours 31 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CLEVELAND OH
940 AM EDT TUE JUL 6 1999

SATELLITE IMAGERY INDICATES CLOUDS ASSOCIATED WITH THE FNT ARE
QUICKY DISSIPATING. CONVECTION THAT WAS FIRING ALONG THE FRONT HAS
ALSO QUICKLY DISSIPATED.  SHORTWAVE MOVING OFF TO THE E ACROSS THE
CENTRAL GREAT LAKES REGION IS BECOMING MORE ELONGATED AND WEAKENING
WITH TIME CAUSING CONVECTION TO DIE OFF.  CONVECTION ON THE SOUTHERN
END OF THE FNT WAS BEING DRIVEN BY SUPPLY OF MSTR FM THE GULF OF
MEXICO INTO THE AXIS OF CONVERGENCE. HOWEVER...MSTR SUPPLY HAS BEEN
CUT OFF AND THEREFORE THE CONVECTION HAS WEAKENED.

NOW...IT IS JUST WAIT AND SEE AS THE THE CDFNT PROGRESSES E INTO
INCREASINGLY MORE UNSTABLE AIR MASS OVR OH AND NW PA.  CONVECTION
THAT DOES FIRE WILL BE DRIVEN BY DAY TIME HEATING AND LIFTING
MECHANISM OF THE FNT. LI INCREASE TO -6 SOUTH OF CLE TO ASHTABULA
LINE LATER THIS AFTERNOON. THIS FITS WELL WITH GREATEST HEATING AND
INSTABILITY.  MODEL SOUNDINGS SUPPORT THE POTENTIAL FOR SLOW MOVING
CELLS FM SW TO NE ALONG THE FNTL BOUNDARY AS THE FNT TAKES ON A MORE
W TO E ORIENTATION. HIGHEST CHANCE POPS LIKELY IN EASTERN SECTIONS.

WILL LEAVE CURRENT FORECAST AS IT IS.

.CLE...NONE.

LOMBARDY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 2:35 PM EDT	Severe Thunderstorm Warning	CLE	Erie	65 min
Jul 6, 2:40 PM EDT	Severe Thunderstorm Warning	CLE	Lorain	65 min
Jul 6, 2:57 PM EDT	Severe Thunderstorm Warning	CLE	Huron, Seneca	63 min
Jul 6, 2:57 PM EDT	Severe Thunderstorm Warning	CLE	Hancock	63 min
Jul 6, 3:20 PM EDT	Severe Thunderstorm Warning	CLE	Geauga	65 min
Jul 6, 3:21 PM EDT	Severe Thunderstorm Warning	CLE	Stark	64 min
Jul 6, 3:40 PM EDT	Severe Thunderstorm Warning	CLE	Medina, Summit	60 min
Jul 6, 3:40 PM EDT	Severe Thunderstorm Warning	CLE	Portage	60 min
Jul 6, 4:03 PM EDT	Severe Thunderstorm Warning	CLE	Huron	47 min
Jul 6, 4:07 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Trumbull	63 min
Jul 6, 4:16 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Richland, Wayne	64 min
Jul 6, 5:16 PM EDT	Flash Flood Warning	CLE	Cuyahoga, Lorain	119 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1999 Every 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.