Alert archive / Ohio / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 80, NWS Wilmington, OH

August 19, 1990Ashland County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Aug 19, 1990, 4:20 AM EDT for Ashland County, Ohio. It was in force for 55 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
Aug 19, 1990, 4:20 AM EDT (08:20 UTC)
Expired
Aug 19, 1990, 5:15 AM EDT
In force
55 min
Issued by
NWS Wilmington, OH
Area
Whole counties

County Ashland County, OH

The radar

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

What was reported inside it

TimeReportWhereRemark
Aug 19, 4:25 AM EDTThunderstorm Wind 0Ashland, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 8.3 hours before the alert went out and 190 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 00:00Z on 1990-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 339 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 00:00Z on 1990-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
339 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
58 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 190817 COR
SVRMFD
OHC005-190915-

BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND URBAN AND SMALL STREAM FLOOD WARNING
NATIONAL WEATHER SERVICE MANSFIELD OH
ISSUED BY CLEVELAND OH
420 AM EDT SUN AUG 19 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 AM EDT
AND AN URBAN AND SMALL STREAM FLOOD WARNING UNTIL  515 AM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...

IN NORTH CENTRAL OHIO
          ...ASHLAND

AT 410 AM THE ASHLAND COUNTY SHERRIF OFFICE REPORTED TREE DOWN NEAR
LOUDONVILLE. ALSO...RADAR INDICATED VERY HEAVY RAIN IN THE COUNTY.


SEVERE THUNDERSTORMS MAY PRODUCE DAMAGING WINDS... FREQUENT
LIGHTNING AND HEAVY RAINS WHICH MAY CAUSE FLOODING OF DRAINAGE
SYSTEMS. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

FJ

...CORRECTED TO CHANGE FLASH FLOOD TO URBAN AND SMALL STREAM...

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 4:20 AM EDTFlash Flood WarningILNAshland55 min
Aug 19, 4:49 PM EDTSevere Thunderstorm WarningILNDarke41 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1990Every severe thunderstorm warning in 1990

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.