Alert archive / Ohio / Flash Flood Warnings in 1991
Flash Flood Warning 18, NWS Cleveland, OH
NWS Cleveland, OH issued this flash flood warning at Aug 20, 1991, 5:44 AM EDT for Ottawa County, Ohio. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Aug 20, 1991, 5:44 AM EDT (09:44 UTC)
- Expired
- Aug 20, 1991, 12:00 PM EDT
- In force
- 6 hr
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
County Ottawa County, OH
The nearest sounding before it
Detroit, MI (KFNT), launched 00:00Z, 9.7 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTOL 200959 COR FFWTOL OHC123-201600- BULLETIN - EBS ACTIVATION REQUESTED FLOOD WARNING...CORRECTED NATIONAL WEATHER SERVICE TOLEDO OH 559 AM EDT TUE AUG 20 1991 THE NATIONAL WEATHER SERVICE IN TOLEDO HAS CONTINUED THE FLOOD WARNING EFFECTIVE UNTIL 12 NOON FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTH CENTRAL OHIO ...OTTAWA COUNTY AT 540 AM WEATHER RADAR INDICATED RAIN SHOWERS CONTINUING OVER MUCH OF OTTAWA COUNTY. ACCORDING TO THE PORT CLINTON POLICE...ROADS REMAIN FLOODED AND THERE HAS BEEN NO IMPROVEMENT SINCE 130 THIS MORNING. SHOWERS AND THUNDERSTORMS...WITH RAIN POSSIBLY HEAVY AT TIMES...WILL CONTINUE IN OTTAWA COUNTY THROUGH MID-MORNING. AROUND TWELVE INCHES OF RAIN HAS FALLEN IN PORT CLINTON SINCE 2 PM MONDAY...FLOOD WATERS MAY NOT RECEDE UNTIL AROUND NOON. 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 TO HIGHER GROUND. MURPHY CORRECTED EXPIRATION TIME IN HEADER
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
Special weather statement, Aug 20, 12:51 AM EDT, 4 hours 53 minutes before
OHZ001-002-200600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OHIO 1250 AM EDT TUE AUG 20 1991 A STRONG THUNDERSTORM WAS MOVING OVER KELLEYS ISLAND EARLY THIS MORNING. AT 1245 AM RADAR SHOWED SCATTERED STRONG THUNDERSTORMS OVER LAKE ERIE NORTH OF CLEVELAND...OVER KELLEYS ISLAND...PELEE ISLAND AND EAST OF TOLEDO NEAR OAK HARBOR AND FREMONT. THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 15 MPH. A FLOOD WARNING CONTINUES IN EFFECT FOR OTTAWA COUNTY UNTIL 130 AM EDT. BETWEEN 2 PM AND MIDNIGHT ALMOST 10 INCHES OF RAIN /9.85/ FELL IN PORT CLINTON...30 MILES SOUTHEAST OF TOLEDO. THESE THUNDERSTORMS CAN PRODUCE HEAVY RAIN...GUSTY WINDS AND HAIL AND PONDING OF WATER ON ROADS. -PEOPLE OVER THE NORTHWEST QUARTER OF OHIO CAN EXPECT SHOWERS AND THUNDERSTORMS INTO THE EARLY MORNING HOURS. IF THREATENING WEATHER IS OBSERVED MOVE TO A PLACE OF SAFETY. KIELTYKA
Special weather statement, Aug 20, 2:45 AM EDT, 2 hours 59 minutes before
OHZ001-002-011-200745- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TOLEDO OH 245 AM EDT TUE AUG 20 1991 A THUNDERSTORM OVER NORTH CENTRAL OHIO WAS STRENGTHENING RAPIDLY EARLY THIS MORNING. AT TER IN LOW-LYING AREAS IS LIKELY...DO NOT DRIVE YOUR VEHICLE OVER WATER COVERED ROADS. MURPHY
Special weather statement, Aug 20, 2:55 AM EDT, 2 hours 49 minutes before
OHZ001-002-200800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OHIO 255 AM EDT TUE AUG 20 1991 A THUNDERSTORM WITH HEAVY RAIN WAS ON THE SANDUSKY...ERIE COUNTY LINE EARLY THIS MORNING. AT 250 AM RADAR INDICATED A SLOW MOVING THUNDERSTORM...JUST NORTH OF BELLUVUE OR 45 MILES SOUTHEAST OF TOLEDO. THE THUNDERSTORM WAS MOVING SLOWLY WEST AT 15 MPH. HEAVY RAIN AND EVEN HAIL IS POSSIBLE WITH THIS THUNDERSTORM. PONDING OF WATER ON ROADWAYS AND FIELDS ARE LIKELY. A FLOOD WARNING CONTINUES FOR OTTAWA COUNTY UNTIL 530 AM EDT. RADAR ALSO SHOWED SHOWERS AND THUNDERSTORMS OVER LAKE ERIE NEAR THE CANADIAN ISLANDS. THESE THUNDERSTORMS WERE MOVING SLOWLY WEST AND CAN CONTAIN...HEAVY RAIN...HAIL AND GUSTY WINDS. PEOPLE IN NORTHWEST AND NORTH CENTRAL OHIO SHOULD MOVE TO A PLACE OF SAFETY IF THREATENING WEATHER IS OBSERVED. KIELTYKA
Special weather statement, Aug 20, 3:02 AM EDT, 2 hours 42 minutes before
OHZ001-002-200800- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE CLEVELAND OHIO 301 AM EDT TUE AUG 20 1991 A THUNDERSTORM WITH HEAVY RAIN WAS ON THE SANDUSKY...ERIE COUNTY LINE EARLY THIS MORNING. AT 250 AM RADAR INDICATED A SLOW MOVING THUNDERSTORM...JUST NORTH OF BELLUVUE OR 45 MILES SOUTHEAST OF TOLEDO. THE THUNDERSTORM WAS MOVING SLOWLY WEST AT 15 MPH. HEAVY RAIN AND EVEN HAIL IS POSSIBLE WITH THIS THUNDERSTORM. PONDING OF WATER ON ROADWAYS AND FIELDS ARE LIKELY. A FLOOD WARNING CONTINUES FOR OTTAWA COUNTY UNTIL 545 AM EDT. RADAR ALSO SHOWED SHOWERS AND THUNDERSTORMS OVER LAKE ERIE NEAR THE CANADIAN ISLANDS. THESE THUNDERSTORMS WERE MOVING SLOWLY WEST AND CAN CONTAIN...HEAVY RAIN...HAIL AND GUSTY WINDS. PEOPLE IN NORTHWEST AND NORTH CENTRAL OHIO SHOULD MOVE TO A PLACE OF SAFETY IF THREATENING WEATHER IS OBSERVED. KIELTYKA THE FLOOD WARNING FOR OTTAWA COUNTY IS IN EFFECT UNTIL 545 AM EDT.
Special weather statement, Aug 20, 4:37 AM EDT, 1 hour 7 minutes before
OHZ001-002-200935- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OHIO 430 AM EDT TUE AUG 20 1991 A SMALL CLUSTER OF THUNDERSTORMS WAS MOVING OVER SANDUSKY BAY AND ADJACENT LAND AREAS. AT 415 AM RADAR INDICATED A SMALL CLUSTER OF SLOW MOVING THUNDERSTORMS... OVER THE SANDUSKY...MARBLEHEAD... SANDUSKY BAY AREA. THESE THUNDERSTORMS WERE MOVING WEST AT ABOUT 15 MPH. LOCALLY TORRENTIAL DOWNPOURS HAVE BEEN ASSOCIATED WITH THESE THUNDERSTORMS. SMALL HAIL IS ALSO POSSIBLE. STREET FLOODING WAS REPORTED TO BE OCCURRING IN THE CITY OF SANDUSKY. A FLOOD WARNING CONTINUES FOR OTTAWA COUNTY UNTIL 545 AM EDT. RADAR ALSO SHOWED SHOWERS AND THUNDERSTORMS OVER A GOOD PORTION OF LAKE ERIE... WITH SOME OF THE STRONGER STORMS APPROACHING BOTH THE U.S. AND AND CANADIAN ISLANDS. PEOPLE IN NORTHWEST AND NORTH CENTRAL OHIO SHOULD STAY TUNED TO THE LATEST WEATHER DEVELOPEMENTS... WATCHES AND WARNINGS. IF THREATENING WEATHER IS SIGHTED OR A WARNING IS ISSUED YOU SHOULD BE READY TO MOVE TO A PLACE OF SAFETY. VRCEK
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 19, 11:32 PM EDT | Flash Flood Warning | CLE | Ottawa | 118 min |
| Aug 20, 1:36 AM EDT | Flash Flood Warning | CLE | Ottawa | 4 hr |
| Aug 20, 4:59 PM EDT | Flash Flood Warning | CLE | Columbiana | 61 min |
Nearby
Flash Flood Warnings in Ohio, 1991Every 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.