Alert archive / Ohio / Flash Flood Warnings in 1991

Flash Flood Warning 16, NWS Cleveland, OH

August 19, 1991Ottawa County, Ohio

NWS Cleveland, OH issued this flash flood warning at Aug 19, 1991, 11:32 PM EDT for Ottawa County, Ohio. It was in force for 118 min.

The area

The counties it named.

The facts

Issued: Aug 19, 1991, 11:32 PM EDT (03:32 UTC)
Expired: Aug 20, 1991, 1:30 AM EDT
In force: 118 min
Issued by: NWS Cleveland, OH
Area: Whole counties

County Ottawa County, OH

The nearest sounding before it

Detroit, MI (KFNT), launched 00:00Z, 3.5 hours before the alert went out and 142 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: 362 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 658 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 43 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 KTOL 200333
FFWTOL
OHC123-200530-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE TOLEDO OH
1132 PM EDT MON AUG 19 1991
 
THE NATIONAL WEATHER SERVICE IN TOLEDO HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  130 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN NORTH CENTRAL OHIO
 
   ...OTTAWA COUNTY
 
AT 1130 PM WEATHER RADAR INDICATED THAT THUNDERSTORMS WITH EXTREMELY
HEAVY RAIN WERE ALONG THE LAKE ERIE SHORELINE FROM TOLEDO TO SANDUSKY.
THE STORMS WERE DRIFTING SLOWLY TO THE SOUTH INTO OTTAWA COUNTY. MANY
ROADS IN PORT CLINTON ARE ALREADY FLOODED FROM HEAVY RAIN EARLIER THIS
EVENING. THE ADDITIONAL RAINFALL WILL CAUSE MORE FLOOD PROBLEMS IN THE
PORT CLINTON AREA AS WELL AS OTHER PARTS OF OTTAWA COUNTY.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE T`O HIGHER GROUND.
 
CB

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Aug 19, 6:04 PM EDT, 5 hours 28 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE ERIE, PA
555 PM EDT MON AUG 19 1991

STORM REPORTS FOR MONDAY AUGUST 19 1991

TIME  EDT    EVENT
.........................................................................
1700 EDT     NUMEROUS LARGE TREES REPORTED DOWNED ALONG RT 198 AND 86 NW
             OF MEADVILLE IN CRAWFORD COUNTY...STATE POLICE REPORT.

1710 EDT     1 INCH OF RAIN IN 30 MINUTES AT LINESVILLE...WESTERN CRAWFORD
             COUNTY...MINOR URBAN FLOODING...SKYWARN.

1715 EDT     NUMEROUS LIMBS DOWNED IN BEAVER CENTER...NW CRAWFORD COUNTY...
             SKYWARN.

TP

Special weather statement, Aug 19, 6:43 PM EDT, 4 hours 49 minutes before

OHZALL-192345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OHIO
645 PM EDT MON AUG 19 1991

THE FLOOD WARNING FOR ERIE AND HURON COUNTIES HAS BEEN CANCELLED.
A FLOOD WARNING REMAINS IN EFFECT FOR OTTOWA COUNTY UNTIL 730 PM.

AT 625 PM WEATHER SERVICE RADAR SHOWED NEARLY STATIONARY THUNDERSTORMS
OVER SANDUSKY BAY AND PORT CLINTON. LAW ENFORCEMENT OFFICIALS REPORT
PLENTY OF STREET FLOODING AND THAT THE PORTAGE RIVER WAS OUT OF ITS
BANKS IN PORT CLINTON.

OTHER WIDELY SCATTERED THUNDERSTORMS WERE OVER NORTHERN OHIO AND A
LINE OF THUNDERSTORMS WAS ENTERING SOUTHWEST OHIO. THESE CELLS WERE
MOVING EAST AT 30.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL NEWS MEDIA FOR THE
PLATEST INFORMATION AND STATEMENTS.

SJN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 8:14 PM EDT	Tornado Warning	CLE	Stark	31 min
Aug 20, 1:36 AM EDT	Flash Flood Warning	CLE	Ottawa	4 hr
Aug 20, 5:44 AM EDT	Flash Flood Warning	CLE	Ottawa	6 hr
Aug 20, 4:59 PM EDT	Flash Flood Warning	CLE	Columbiana	61 min

Nearby

Flash Flood Warnings in Ohio, 1991 Every flash flood warning in 1991

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.