Alert archive / Ohio / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 57, NWS Cleveland, OH

July 9, 1999Lorain County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 9, 1999, 5:40 PM EDT for Lorain County, Ohio. It was in force for 65 min. 2 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 9, 1999, 5:40 PM EDT (21:40 UTC)
Expired: Jul 9, 1999, 6:45 PM EDT
In force: 65 min
Issued by: NWS Cleveland, OH
Area: Whole counties

County Lorain County, OH

The radar

The Cleveland radar (KCLE), 25 km from the middle of the area, began a volume at 21:43 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
Jul 9, 5:50 PM EDT	Thunderstorm Wind 61	Avon, OH	Trees and power lines downed across the county. A 70 mph gust was measured in Avon.
Jul 9, 6:08 PM EDT	Tornado F0	Rochester, OH	A tornado touched down briefly near the intersection of Gore Orphange and Stewart Roads (just south of Rochester) then moved east along Steward Road. Trees and powers lines were blown down.

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 9, 5:15 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 9.7 hours before the alert went out and 176 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1071 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 296 m²/s²
0-3 km storm-relative helicity: 340 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 092141 RRA
SVRCLE
OHC093-092245-

BULLETIN - EAS ACTIVATION/IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
540 PM EDT FRI JUL 9 1999

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

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

* UNTIL 645 PM EDT

* AT 538 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 11 MILES EAST OF NORWALK OR 5 MILES WEST OF
  KIPTON... MOVING EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL MOVE NEAR...
  KIPTON
  OBERLIN
  LAGRANGE
  ELYRIA
  GRAFTON


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

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 9, 2:55 PM EDT, 2 hours 45 minutes earlier.

Area forecast discussion, Jul 9, 2:55 PM EDT, 2 hours 45 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CLEVELAND OH
255 PM EDT FRI JUL 9 1999

OZFCLE AVBL. PUSHED TO GET WRK COPY AVBL IN CASE WE GET INTO BOX
SITUATION BEFORE ISSUANCE. MCD JUST OUT OF SPC CALLS FOR PSBL BOX IN
LOWR MI FOR ACTIVITY BHND FNT. CELLS DVLPG NICELY WITH FNT IN NE
INDIANA. SVR STILL PSBL, BUT WL LV OUT OF ZONES UNLESS WE END UP
WITH A WATCH. LI'S ON SFC PLOTS -6 TO -7 THIS HR WITH DWPTS MSTLY IN
LWR 70S. FNT MAY SLO DOWN TNGT AND FOR SRN SXNS OF FA, CUD END UP
WITH WDLY SCT SHWRS INTO SAT MRNG AND INCLUDED 30%. NRN SXNS DRY.
COOLER AND DRIER REST OF SAT THRU THE EXTENDED (WED).
DEB

.CLE...NONE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 4:31 PM EDT	Severe Thunderstorm Warning	CLE	Wood	64 min
Jul 9, 4:46 PM EDT	Severe Thunderstorm Warning	CLE	Sandusky, Seneca	64 min
Jul 9, 4:49 PM EDT	Severe Thunderstorm Warning	CLE	Hancock	66 min
Jul 9, 5:23 PM EDT	Severe Thunderstorm Warning	CLE	Erie, Huron	67 min
Jul 9, 5:27 PM EDT	Severe Thunderstorm Warning	CLE	Marion, Wyandot	63 min
Jul 9, 5:42 PM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Lake	63 min
Jul 9, 5:49 PM EDT	Tornado Warning	CLE	Huron	66 min
Jul 9, 5:57 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Geauga	63 min
Jul 9, 6:00 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Medina	65 min
Jul 9, 6:00 PM EDT	Severe Thunderstorm Warning	CLE	Richland	65 min
Jul 9, 6:04 PM EDT	Tornado Warning	CLE	Lorain, Medina	66 min
Jul 9, 6:21 PM EDT	Severe Thunderstorm Warning	CLE	Wayne	64 min
Jul 9, 6:23 PM EDT	Severe Thunderstorm Warning	CLE	Portage, Summit	62 min
Jul 9, 6:23 PM EDT	Severe Thunderstorm Warning	CLE	Trumbull	62 min
Jul 9, 6:32 PM EDT	Severe Thunderstorm Warning	CLE	Holmes	63 min
Jul 9, 6:34 PM EDT	Tornado Warning	CLE	Summit	66 min
Jul 9, 6:47 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning, Stark	63 min
Jul 9, 6:49 PM EDT	Tornado Warning	CLE	Portage	66 min
Jul 9, 7:17 PM EDT	Tornado Warning	CLE	Mahoning	63 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; radar from the NEXRAD Level II archive.