Alert archive / Ohio / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 64, NWS Wilmington, OH

July 9, 1990Montgomery County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jul 9, 1990, 6:56 PM EDT for Montgomery County, Ohio. It was in force for 34 min.

The area

The counties it named.

The facts

Issued: Jul 9, 1990, 6:56 PM EDT (22:56 UTC)
Expired: Jul 9, 1990, 7:30 PM EDT
In force: 34 min
Issued by: NWS Wilmington, OH
Area: Whole counties

County Montgomery 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

Dayton/James M C, OH (KDAY), launched 12:00Z, 10.9 hours before the alert went out and 18 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: 1078 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 1196 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDAY 092256
SVRDAY
OHC113-092330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE DAYTON OH
656 PM EDT MON JUL 9 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 730 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE STATE OF OHIO
      MONTGOMERY

AT 650 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF
POSSIBLE SEVERE THUNDERSTORMS ACROSS CENTRAL MONTGOMERY COUNTY
OHIO AND THE CITY OF DAYTON.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADWAYS QUICKLY...
AVOID DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.

 LINDSEY

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.

In the hours before

Special weather statement, Jul 9, 2:10 PM EDT, 4 hours 46 minutes before

OHZ006-007-009-011-091900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE  COLUMBUS OH
210 PM EDT MON JUL 9 1990

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF CENTRAL OHIO
UNTIL 9 PM EDT.

AT 205 PM NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS
EXTENDING FROM 40 MILES NORTH OF WHEELING WEST VIRGINIA SOUTHWEST TO
30 MILES NORTHEAST OF DAYTON. THESE THUNDERSTORMS WERE MOVING SOUTHEAST
AT 30 MPH AND WILL REACH THE COLUMBUS AREA BY 300 PM.

THE THUNDERSTORMS WERE PRODUCING HEAVY RAIN AND STRONG GUSTY WINDS.

PEOPLE ACROSS CENTRAL OHIO SHOULD KEEP ABREAST OF THE LATEST WEATHER
CONDITIONS BY LISTENING TO NOAA WEATHER RADIO... OR YOUR LOCAL RADIO
OR TV STATIONS FOR STATEMENTS AND WARNINGS.

SMITH

Special weather statement, Jul 9, 3:17 PM EDT, 3 hours 39 minutes before

OHZ005-010-092015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DAYTON OH
317 PM EDT MON JUL 9 1990

THUNDERSTORMS WITH VERY HEAVY RAIN...GUSTY WINDS AND SMALL HAIL WERE
ACROSS DARKE...MIAMI...AND CHAMPAIGN COUNTIES IN WESTERN OHIO AT 315
PM EDT.

NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS ACROSS
WESTERN OHIO BETWEEN GREENVILLE IN DARKE COUNTY AND COLUMBUS.  THE
LINE OF THUNDERSTORMS WAS DRIFTING SOUTH AT AROUND 15 MPH.

PEOPLE IN PREBLE...MONTGOMERY...CLARK...AND GREENE COUNTIES IN WESTERN
OHIO CAN EXPECT THESE THUNDERSTORMS TO SPREAD INTO THEIR COUNTIES
BETWEEN 320 AND 400 PM EDT.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 900 PM EDT FOR ALL OF
THE MIAMI )VALLEY AND WEST CENTRAL OHIO COUNTIES.
<
LINDSEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 12:35 PM EDT	Severe Thunderstorm Warning	ILN	Richland	55 min
Jul 9, 12:50 PM EDT	Severe Thunderstorm Warning	ILN	Ashland	40 min
Jul 9, 1:19 PM EDT	Severe Thunderstorm Warning	ILN	Mercer	56 min
Jul 9, 1:53 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize	67 min
Jul 9, 2:13 PM EDT	Severe Thunderstorm Warning	ILN	Darke, Shelby	62 min
Jul 9, 3:46 PM EDT	Severe Thunderstorm Warning	ILN	Greene, Montgomery	59 min
Jul 9, 4:43 PM EDT	Severe Thunderstorm Warning	ILN	Greene	32 min
Jul 9, 4:49 PM EDT	Severe Thunderstorm Warning	ILN	Clinton, Warren	56 min
Jul 9, 5:44 PM EDT	Severe Thunderstorm Warning	ILN	Greene	61 min
Jul 9, 5:45 PM EDT	Severe Thunderstorm Warning	ILN	Crawford, Richland	60 min
Jul 9, 5:54 PM EDT	Severe Thunderstorm Warning	ILN	Montgomery	66 min
Jul 9, 6:07 PM EDT	Severe Thunderstorm Warning	ILN	Clark	68 min
Jul 9, 6:14 PM EDT	Flash Flood Warning	ILN	Clark, Greene	2 hr
Jul 9, 6:24 PM EDT	Severe Thunderstorm Warning	ILN	Preble	66 min
Jul 9, 7:24 PM EDT	Severe Thunderstorm Warning	ILN	Warren	66 min
Jul 9, 7:25 PM EDT	Severe Thunderstorm Warning	ILN	Greene	35 min
Jul 9, 7:35 PM EDT	Severe Thunderstorm Warning	ILN	Clinton	55 min
Jul 9, 7:35 PM EDT	Tornado Warning	ILN	Knox	60 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1990 Every 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; the sounding from the Mesonet's radiosonde archive.