Alert archive / Ohio / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 53, NWS Cleveland, OH

August 4, 1989Mahoning County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 4, 1989, 4:35 PM EDT for Mahoning County, Ohio. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
Aug 4, 1989, 4:35 PM EDT (20:35 UTC)
Expired
Aug 4, 1989, 5:00 PM EDT
In force
25 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Mahoning County, OH

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.6 hours before the alert went out and 88 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, Pittsburgh, PA at 12:00Z on 1989-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1198 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, Pittsburgh, PA at 12:00Z on 1989-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 square meters per square second.1939Sfc1 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
1198 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
623 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
141 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KYNG 042035
SVRYNG
OHC099-042100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
435 PM EDT FRI AUG 4 1989
 
THE NATIONAL WEATHER SERVICE IN YOUNGSTOWN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTHEAST OHIO
          ...MAHONING
 
AT 430 PM EDT RADAR INDICATED A SEVERE THUNDERSTORM IN WESTERN
MAHONING.
 
 
SEVERE THUNDERSTORMS MAY PRODUCE DAMAGING WINDS...LARGE HAIL...
FREQUENT LIGHTNING AND HEAVY RAINS WHICH MAY CAUSE FLOODING.
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 4:05 PM EDTTornado WarningCLEPortage, Summit55 min
Aug 4, 4:21 PM EDTTornado WarningCLETrumbull39 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1989Every severe thunderstorm warning in 1989

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.