Alert archive / Ohio / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 18, NWS Cleveland, OH

June 11, 1999Huron County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jun 11, 1999, 5:52 PM EDT for Huron County, Ohio. It was in force for 63 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 11, 1999, 5:52 PM EDT (21:52 UTC)
Expired: Jun 11, 1999, 6:55 PM EDT
In force: 63 min
Issued by: NWS Cleveland, OH
Area: Whole counties

County Huron County, OH

The radar

The Cleveland radar (KCLE), 68 km from the middle of the area, began a volume at 21:51 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
Jun 11, 6:15 PM EDT	Thunderstorm Wind	Central Portion, OH	Larges trees downed. A traffic light was blown down in Norwalk.

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, 9.9 hours before the alert went out and 188 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: 1779 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: -14 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.

447 
WUUS1 KCLE 112155 RRA
SVRCLE
OHC077-112255-

BULLETIN - EAS ACTIVATION/IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
552 PM EDT FRI JUN 11 1999

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HURON COUNTY IN NORTH CENTRAL OHIO

* UNTIL 655 PM EDT

* AT 550 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES SOUTH OF NORWALK... MOVING NORTH AT 10
  MPH.

* THE SEVERE THUNDERSTORM WILL MOVE NEAR...
  NORWALK
  EAST NORWALK


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

ADAMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 4:44 PM EDT	Severe Thunderstorm Warning	CLE	Huron	61 min
Jun 11, 4:50 PM EDT	Severe Thunderstorm Warning	CLE	Marion	65 min
Jun 11, 4:56 PM EDT	Severe Thunderstorm Warning	CLE	Marion	59 min
Jun 11, 5:58 PM EDT	Flash Flood Warning	CLE	Huron	2 hr
Jun 11, 6:07 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	63 min
Jun 11, 6:39 PM EDT	Severe Thunderstorm Warning	CLE	Lorain	66 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.