Cleveland, OH

Weather Forecast Office

August 23-24, 2023 Significant Flash Flooding and Severe Weather

Overview

An anomalously-warm and moist air mass was in place across much of the Central Plains and Midwest, resulting in strong to perhaps extreme instability in addition to tropical-like precipitable water values exceeding 2.0 inches. The Lower Great Lakes region, specifically northern Ohio and Northwest Pennsylvania found itself on the eastern edge of this “heat dome”. Strong northwest flow aloft persisted along the periphery of the anomalously-warm and moist air mass, allowing for organized storms to develop across northern Ohio and Northwest Pennsylvania. A constant feed of moisture allowed these storms to maintain their intensity throughout the evening and overnight hours of Aug 23, 2023 and into the early morning hours of Aug 24, 2023 as they slowly pivoted southwest. Numerous flash flood warnings were issued with 3 “considerable” tags utilized throughout the course of the event. The hardest-hit areas were along the lakeshore between Toledo and Cleveland where there were several reports of 5 to 7 inches of rainfall. Elsewhere, generally 2 to 4 inches of rainfall was common, most of which fell in only a few hours.

Satellite infrared loop from August 23, 2023 4:30 PM EDT through August 24, 2023 6:30 AM EDT.

Photos & Video
Radar
Storm Reports
Environment

Photos & Video


Flooding off of route 303 in Grafton, OH. Credit: Jess Jacobs	Flooding in Port Clinton, OH. Credit: Emerson Young	Additional flooding off of route 303 in Grafton, OH. Credit: Jess Jacobs


Tree downed in Sandusky, OH. Credit: Kaylah Gonzalez	Flooding with water rescues on I-90 just west of Cleveland, OH.

Radar

Radar loop from August 23, 2023 4:30 PM EDT through August 24, 2023 6:30 AM EDT.


MRMS multi-sensor rainfall estimate from 11 AM August 23 through 11 AM August 24. Yellows indicate values over 2" with reds indicating 5"+.	MRMS estimated 3-hour rainfall average return interval from 6-9 PM August 23. The reds indicate a rainfall amount that typically falls every 10-20 years in western Lake, northeastern Cuyahoga and northwestern Geauga County where flash flooding occurred.	MRMS estimated 30 minute rainfall average return interval from 8:30-9:00 PM August 23. The yellows and reds indicate an amount of rain that typically occurs every 5-10 years from northern Lorain County into western Cuyahoga County and Cleveland where flash flooding occurred.	MRMS estimated 3-hour rainfall average return interval from 8:30-11:30 PM August 23. The reds indicate an average 10-50 year return interval, with purples indicating 50-200 years. Widespread flash flooding occurred in parts of Lorain and northern Ashland Counties.


MRMS estimated 6-hour rainfall average return interval from 10:00 PM Aug 23 - 4:00 AM Aug 24. The reds indicate an average 10-50 year return interval, with purples indicating 50-200+ years. Widespread flash flooding occurred in parts of Ottawa, Erie, Huron, Sandusky and Ashland Counties.	MRMS estimated 6-hour rainfall average return interval from 1:00 - 7:00 AM Aug 24. The reds indicate an average 10-50 year return interval, with purples indicating 50+ years. Flash flooding occurred in parts of several counties, including in the Toledo area.	MRMS CREST unit streamflow valid 9:00 PM August 23, showing excess run-off from heavy rainfall. Values of orange, red and purple indicate significant run-off amounts capable of producing potentially significant flash flooding as was observed in western Lake and Cuyahoga Counties.	MRMS CREST unit streamflow valid 11:30 PM August 23, showing excess run-off from heavy rainfall. Values of orange, red and purple indicate significant run-off amounts capable of producing potentially significant flash flooding as was observed in parts of Lorain and Ashland Counties.


MRMS CREST unit streamflow valid 2:00 AM August 24, showing excess run-off from heavy rainfall. Values of orange, red and purple indicate significant run-off amounts capable of producing potentially significant flash flooding as was observed near Port Clinton, Sandusky and Fremont.	MRMS CREST unit streamflow valid 4:00 AM August 24, showing excess run-off from heavy rainfall. Values of orange and red indicate significant run-off amounts capable of producing flash flooding as was observed in the Toledo area, where widespread street flooding stalled numerous vehicles.	3D radar view of a large hail core (in whites) over Lorain County around 9 PM August 23rd. This hail core extended from about 10,000 feet to 35,000 feet aloft. Multiple reports of golf ball sized hail and damaging winds occurred as this hail core crashed to the ground.	4-panel radar view showing reflectivity (upper left), velocity (upper right), VIL (bottom left) and echo tops (bottom right) of a severe storm that produced tree damage in the city of Sandusky. Note the diverging appearance on velocity, indicative of a downburst/microburst that can cause wind damage. Echo tops were approximately 55,000' high!

Storm Reports

Interactive Map

Link to Summary Local Storm Report

Storm Reports Text

953 
NWUS51 KCLE 291748
LSRCLE

Preliminary Local Storm Report
National Weather Service Cleveland OH
148 PM EDT Tue Aug 29 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0140 PM     Tstm Wnd Gst     2 NNW Sheffield Lake    41.51N 82.11W
08/23/2023  M35 MPH          LEZ145             OH   Buoy             

            Sheffield Buoy 45204 reported a wind gust of 
            35 knots. 

0225 PM     Tstm Wnd Dmg     2 SSW Medina            41.11N 81.88W
08/23/2023                   Medina             OH   Public           

            Report from mPING: 1-inch tree limbs broken; 
            Shingles blown off. 

0238 PM     Tstm Wnd Dmg     Creston                 40.98N 81.90W
08/23/2023                   Wayne              OH   Public           

            Report from mPING: 1-inch tree limbs broken; 
            Shingles blown off. 

0238 PM     Tstm Wnd Dmg     4 SSE Burbank           40.93N 81.96W
08/23/2023                   Wayne              OH   Emergency Mngr   

            Steeple blown off church and several barn 
            roofs partially blown off.     

0300 PM     Tstm Wnd Gst     17 NE Marblehead        41.67N 82.45W
08/23/2023  M65 MPH          LEZ164             OH   Buoy             

            Buoy 45005 reported a wind gust of 56 knots. 

0400 PM     Tstm Wnd Gst     9 NW Marblehead         41.63N 82.84W
08/23/2023  M41 MPH          Ottawa             OH   Mesonet          

            Mesonet station SBIO1 9 NE Port Clinton. 

0435 PM     Tstm Wnd Gst     2 SW Millersburg        40.53N 81.95W
08/23/2023  M40 MPH          Holmes             OH   AWOS             

            AWOS station K10G 2 WSW Millersburg. 

0608 PM     Hail             1 NNW Hubbard           41.17N 80.58W
08/23/2023  E0.25 inch       Trumbull           OH   Trained Spotter  

             

0635 PM     Tstm Wnd Gst     3 WNW Cleveland         41.50N 81.73W
08/23/2023  M44 MPH          LEZ146             OH   Mesonet          

            Mesonet station XCLE Cleveland - Edgewater. 

0640 PM     Tstm Wnd Gst     3 ENE Lakewood          41.50N 81.75W
08/23/2023  M43 MPH          LEZ146             OH   Mesonet          

            Mesonet station 45205 3 ENE Lakewood. 

0745 PM     Rain             4 SSE Painesville       41.68N 81.21W
08/23/2023  M1.70 inch       Lake               OH   Public           

            1.70 inches measured in less than 2 hours 
            near Concord Township. 

0745 PM     Flash Flood      2 SW Painesville        41.71N 81.28W
08/23/2023                   Lake               OH   Fire Dept/Rescue 

            Multiple roads flooded, some closed and 
            impassable due to high water. 

0745 PM     Rain             4 SSE Painesville       41.68N 81.21W
08/23/2023  M1.70 inch       Lake               OH   Public           

            1.70 inches measured in less than 2 hours 
            near Concord Township. 

0800 PM     Tstm Wnd Gst     4 NNW Cleveland         41.53N 81.72W
08/23/2023  M40 MPH          LEZ146             OH   Buoy             

            Cleveland crib bouy measured a 35 knot wind 
            gust. 

0815 PM     Flash Flood      1 SW Wickliffe          41.60N 81.48W
08/23/2023                   Lake               OH   Fire Dept/Rescue 

            Shoregate towers has significant structural 
            collapse. Fire official presuming this a 
            result of the water collection on the top of 
            their parking garage. 

0820 PM     Tstm Wnd Gst     2 NNW Sheffield Lake    41.51N 82.11W
08/23/2023  M45 MPH          LEZ145             OH   Mesonet          

            Mesonet station 45204 1 NW Sheffield Lake. 

0830 PM     Flash Flood      1 SW Willoughby         41.64N 81.42W
08/23/2023                   Lake               OH   Fire Dept/Rescue 

            Vine Street viaduct at Ben Hur is flooded 
            with multiple vehicles stuck in the high 
            water. 

0837 PM     Tstm Wnd Gst     2 NW Brook Park         41.42N 81.85W
08/23/2023  M40 MPH          Cuyahoga           OH   ASOS             

            ASOS station KCLE Cleveland. 

0846 PM     Hail             2 WSW Sheffield Lake    41.48N 82.13W
08/23/2023  E1.00 inch       Lorain             OH   Public           

            Multiple reports received on social media of 
            at least quarter size hail between Lorain 
            and Sheffield Lake. 

0848 PM     Hail             1 NNE Lorain            41.45N 82.18W
08/23/2023  E1.00 inch       Lorain             OH   Public           

            picture from social media of quarter size 
            hail. 

0848 PM     Tstm Wnd Dmg     1 NNW Lorain            41.45N 82.19W
08/23/2023                   Lorain             OH   Amateur Radio    

            Telephone or power pole blown down in Lorian 
            near Orchard Hill and Cooper Foster. 

0848 PM     Tstm Wnd Gst     3 WNW Vermilion         41.43N 82.36W
08/23/2023  M56 MPH          LEZ145             OH   Mesonet          

            Mesonet station XVRM Vermilion. 

0851 PM     Flash Flood      1 NNW Willowick         41.64N 81.47W
08/23/2023                   Lake               OH   Law Enforcement  

            The area of Lakeshore Blvd and Vine Street 
            is closed due to flash flooding. 

0854 PM     Hail             2 NW Elyria             41.39N 82.13W
08/23/2023  M1.75 inch       Lorain             OH   Amateur Radio    

            Two minutes of hail ranging from quarter to 
            golf ball sized in Elyria Twp. 

0854 PM     Flash Flood      3 E Lakewood            41.48N 81.75W
08/23/2023                   Cuyahoga           OH   Law Enforcement  

            Multiple roads becoming flooded and 
            impassable on the west of the Cleveland. 
            Multiple cars stranded. Closing the area of 
            Clifton Road and Lake Ave due to flash 
            flooding. 

0859 PM     Flash Flood      3 WNW Cleveland         41.49N 81.73W
08/23/2023                   Cuyahoga           OH   Fire Dept/Rescue 

            Several cars stranded in flood waters on the 
            Shoreway blvd. 

0900 PM     Hail             1 NE Lorain             41.45N 82.17W
08/23/2023  E1.00 inch       Lorain             OH   Trained Spotter  

             

0900 PM     Flash Flood      1 SSW Lakewood          41.47N 81.81W
08/23/2023                   Cuyahoga           OH   Amateur Radio    

            Corrects previous flash flood report from 1 
            SSW Lakewood. 3 miles of I-90 is closed in 
            both direction near the McKinley Exit due to 
            considerable flooding and water rescues on 
            the interstate. 

0900 PM     Flash Flood      1 E Lakewood            41.48N 81.78W
08/23/2023                   Cuyahoga           OH   Law Enforcement  

            Lakewood Police and Fire reporting multiple 
            homes with flooding of basements. 

0900 PM     Tstm Wnd Gst     3 E South Amherst       41.35N 82.18W
08/23/2023  M41 MPH          Lorain             OH   ASOS             

            ASOS station KLPR Lorain Elyria. 

0913 PM     Flash Flood      2 E Lakewood            41.48N 81.76W
08/23/2023                   Cuyahoga           OH   Amateur Radio    

            Multiple water rescues ongoing near Lakewood 
            reported by HAM Radio and Fire dept. 

0915 PM     Flash Flood      1 W Willoughby          41.65N 81.42W
08/23/2023                   Lake               OH   Law Enforcement  

            Route 2 near Stevens Road is closed due to 
            flash flooding. 

0918 PM     Tstm Wnd Dmg     2 N Lorain              41.47N 82.18W
08/23/2023                   Lorain             OH   Public           

            Numerous trees down across the city of Lorain. 

0924 PM     Tstm Wnd Dmg     Wakeman                 41.25N 82.40W
08/23/2023                   Huron              OH   Emergency Mngr   

            Tree down and transformer on fire. 

0928 PM     Tstm Wnd Gst     2 SSE Kipton            41.24N 82.29W
08/23/2023  M55 MPH          Lorain             OH   Mesonet          

            Mesonet station CW9769 Kipton. 

0930 PM     Flood            1 ESE Gates Mills       41.52N 81.39W
08/23/2023                   Geauga             OH   911 Call Center  

            County Line Rd closed at 322 due to 
            flooding. Time estimated. 

0941 PM     Hail             1 NE Wellington         41.17N 82.22W
08/23/2023  M1.75 inch       Lorain             OH   Public           

            Golf ball size hail reported in Wellington, 
            OH. 

0950 PM     Tstm Wnd Gst     1 WNW Smithville        40.87N 81.88W
08/23/2023  M48 MPH          Wayne              OH   ASOS             

            ASOS station KBJJ Wooster. 

0956 PM     Flash Flood      2 SW Bratenahl          41.54N 81.63W
08/23/2023                   Cuyahoga           OH   Fire Dept/Rescue 

            CFD closed down portions of MLK near I-90 
            due to flooding. 

0957 PM     Flash Flood      2 SSW Linndale          41.42N 81.78W
08/23/2023                   Cuyahoga           OH   Fire Dept/Rescue 

            Multiple underpasses along I-480 are flooded 
            and impassable. 

1000 PM     Flash Flood      3 SE Kirtland Hills     41.62N 81.28W
08/23/2023                   Geauga             OH   911 Call Center  

            East branch of Chagrin River out of banks 
            over Mitchells Mills Rd near Wisner. Time 
            estimated. 

1012 PM     Rain             1 W Lakewood            41.48N 81.83W
08/23/2023  M3.50 inch       Cuyahoga           OH   Public           

            Many backyard rain gauges reporting 3 to 4 
            inches of rainfall in the last couple of 
            hours. 

1020 PM     Tstm Wnd Gst     6 NNW Marblehead        41.60N 82.78W
08/23/2023  M43 MPH          LEZ143             OH   Mesonet          

            Mesonet station 45201 5 NW Marblehead. 

1020 PM     Tstm Wnd Gst     3 WNW Vermilion         41.43N 82.36W
08/23/2023  M53 MPH          LEZ145             OH   C-Man Station    

            VRMO1 measured a 53 mph wind gust. 

1020 PM     Tstm Wnd Gst     3 WNW Vermilion         41.43N 82.36W
08/23/2023  M53 MPH          LEZ145             OH   Mesonet          

            Mesonet station VRMO1 2 WNW Vermilion. 

1035 PM     Tstm Wnd Gst     4 E Port Clinton        41.52N 82.87W
08/23/2023  M60 MPH          Ottawa             OH   AWOS             

            AWOS station KPCW Port Clinton. 

1040 PM     Flash Flood      1 NNE Wellington        41.17N 82.22W
08/23/2023                   Lorain             OH   Public           

            Report from mPING: Homes or buildings filled 
            with water. 

1041 PM     Tstm Wnd Dmg     2 SSE Sandusky          41.44N 82.70W
08/23/2023                   Erie               OH   Emergency Mngr   

            Multiple large tree limbs blown down in 
            Sandusky. 

1043 PM     Tstm Wnd Gst     3 N Cleveland           41.52N 81.68W
08/23/2023  M44 MPH          Cuyahoga           OH   ASOS             

            ASOS station KBKL Cleveland. 

1043 PM     Tstm Wnd Gst     18 NNW Vermilion        41.66N 82.42W
08/23/2023  M51 MPH          LEZ164             OH   Buoy             

            Buoy 45005 gusted to 51 mph. 

1045 PM     Tstm Wnd Gst     2 NE Fairview Lanes     41.44N 82.64W
08/23/2023  M53 MPH          Erie               OH   Mesonet          

            Mesonet station AU939 Sandusky. 

1049 PM     Tstm Wnd Dmg     1 ESE Sandusky          41.45N 82.70W
08/23/2023                   Erie               OH   Emergency Mngr   

            *** 2 INJ *** 
            Erie County EM reporting a large tree into a 
            house with injuries. 

1050 PM     Tstm Wnd Gst     2 N Port Clinton        41.53N 82.94W
08/23/2023  M47 MPH          LEZ143             OH   Mesonet          

            Mesonet station 45202 1 N Port Clinton. 

1053 PM     Hail             2 S Ashland             40.84N 82.31W
08/23/2023  E1.25 inch       Ashland            OH   Public           

             

1056 PM     Tstm Wnd Gst     4 E Port Clinton        41.52N 82.87W
08/23/2023  M60 MPH          Ottawa             OH   ASOS             

            Port Clinton ASOS measured a 60 mph wind 
            gust. 

1056 PM     Tstm Wnd Dmg     6 NE Port Clinton       41.56N 82.84W
08/23/2023                   Ottawa             OH   Emergency Mngr   

            Ottawa County EMA reporting multiple large 
            trees blown down near Catawba and Port 
            Clinton. 

1100 PM     Tstm Wnd Gst     9 NW Marblehead         41.63N 82.84W
08/23/2023  M43 MPH          Ottawa             OH   Mesonet          

            Mesonet station SBIO1 9 NE Port Clinton. 

1100 PM     Tstm Wnd Dmg     10 NW Marblehead        41.65N 82.83W
08/23/2023                   Ottawa             OH   Amateur Radio    

            A couple trees were blown down on South Bass 
            Island. 

1100 PM     Tstm Wnd Gst     1 ENE Huron             41.40N 82.55W
08/23/2023  M49 MPH          LEZ144             OH   Mesonet          

            Mesonet station HHLO1 Huron. 

1115 PM     Tstm Wnd Gst     9 NW Marblehead         41.63N 82.84W
08/23/2023  M43 MPH          Ottawa             OH   C-Man Station    

            South Bass SBIOL gusted to 43 mph. 

1127 PM     Tstm Wnd Dmg     3 E Bellevue            41.28N 82.79W
08/23/2023                   Huron              OH   Public           

            Large tree down across road. 

1143 PM     Rain             Mentor-on-the-Lake      41.71N 81.36W
08/23/2023  M3.65 inch       Lake               OH   Public           

            Total rainfall for the day. 

1154 PM     Tstm Wnd Gst     2 SSW Green             40.92N 81.45W
08/23/2023  M41 MPH          Summit             OH   ASOS             

            ASOS station KCAK Akron-Canton Regional 
            Arpt. 

1154 PM     Rain             North Ridgeville        41.39N 82.02W
08/23/2023  M4.25 inch       Lorain             OH   Public           

            Measured on personal weather station. 

1200 AM     Rain             Elyria                  41.37N 82.11W
08/24/2023  M3.99 inch       Lorain             OH   Public           

            Measured on backyard weather station. Street 
            and basement flooding ongoing at time of 
            report. 

1200 AM     Tstm Wnd Gst     1 ENE Huron             41.40N 82.55W
08/24/2023  M40 MPH          LEZ144             OH   C-Man Station    

            HHLO1 measured a 40 mph wind gust. 

1202 AM     Tstm Wnd Dmg     Norwalk                 41.24N 82.61W
08/24/2023                   Huron              OH   Emergency Mngr   

            *delayed report* An outbuilding sustained 
            significant damage on Dublin Rd, with much 
            of the roof blown into the nearby field. 

1215 AM     Tstm Wnd Gst     Vickery                 41.38N 82.94W
08/24/2023  E60 MPH          Sandusky           OH   Public           

             

1222 AM     Flood            South Bass Island       41.65N 82.83W
08/24/2023                   Ottawa             OH   Trained Spotter  

            Flood waters 6 to 12 inches deep reported on 
            South Bass Island. 

1230 AM     Tstm Wnd Dmg     Norwalk                 41.24N 82.62W
08/24/2023                   Huron              OH   Emergency Mngr   

            Tree downed onto a porch. 

1231 AM     Flash Flood      Wellington              41.17N 82.23W
08/24/2023                   Lorain             OH   NWS Employee     

            Flooding at the Lorain County fairgrounds 
            including several barns flooded and standing 
            water up to the bottom of parked cars. 

1250 AM     Tstm Wnd Gst     9 ENE Oregon            41.70N 83.26W
08/24/2023  M64 MPH          LEZ142             OH   Mesonet          

            Mesonet station TWCO1 8 ENE Oregon. 

1251 AM     Tstm Wnd Dmg     3 ESE Clay Center       41.56N 83.31W
08/24/2023                   Ottawa             OH   Emergency Mngr   

            Tree and wires down in Martin Township. 

0110 AM     Tstm Wnd Gst     9 ENE Oregon            41.70N 83.26W
08/24/2023  M47 MPH          LEZ142             OH   Mesonet          

            Mesonet station 45165 8 ENE Oregon. 

0150 AM     Tstm Wnd Gst     2 SW Findlay            41.02N 83.67W
08/24/2023  M49 MPH          Hancock            OH   ASOS             

            ASOS station KFDY Findlay. 

0155 AM     Tstm Wnd Dmg     2 W Findlay             41.04N 83.69W
08/24/2023                   Hancock            OH   911 Call Center  

            Power pole downed. 

0200 AM     Tstm Wnd Dmg     Jenera                  40.90N 83.73W
08/24/2023                   Hancock            OH   911 Call Center  

            Power pole downed. 

0210 AM     Tstm Wnd Gst     18 NNW Vermilion        41.67N 82.40W
08/24/2023  E51 MPH          LEZ164             OH   Buoy             

            Buoy 45005 measured a 51 mph wind gust. 

0215 AM     Flash Flood      5 WNW Marblehead        41.55N 82.81W
08/24/2023                   Ottawa             OH   Trained Spotter  

            Water rescue at the time of the report at a 
            campground on Catawba Island. 

0221 AM     Flood            Port Clinton            41.51N 82.94W
08/24/2023                   Ottawa             OH   Trained Spotter  

            Perry Street flooded in Port Clinton. 

0338 AM     Rain             3 W Marblehead          41.53N 82.78W
08/24/2023  M7.34 inch       Ottawa             OH   Public           

            Measured on Davis weather station. 

0406 AM     Tstm Wnd Gst     1 NNW Fairport Harbor   41.76N 81.28W
08/24/2023  M39 MPH          Lake               OH   Buoy             

            Buoy station FAIO1 Fairport, OH. 

0413 AM     Rain             New London              41.08N 82.40W
08/24/2023  M4.24 inch       Huron              OH   Public           

            Measured via personal weather station. 

0442 AM     Flood            3 SSW Green             40.90N 81.47W
08/24/2023                   Stark              OH   Broadcast Media  

            State route 241 closed at Shuffel St due to 
            flooding in North Canton. 

0533 AM     Flash Flood      Toledo                  41.66N 83.58W
08/24/2023                   Lucas              OH   Broadcast Media  

            Widespread street flooding in Toledo with 
            numerous stalled vehicles. 

0541 AM     Flood            Huron                   41.39N 82.56W
08/24/2023                   Erie               OH   Public           

            Huron City Schools closed due to flooding in 
            buildings and around the community. 

0542 AM     Rain             3 NW Harbor View        41.72N 83.49W
08/24/2023  M2.31 inch       Lucas              OH   Trained Spotter  

            Rainfall since 3:30am. 

0557 AM     Flood            3 NNE Rochester         41.17N 82.29W
08/24/2023                   Lorain             OH   Dept of Highways 

            State Route 18 closed in multiple locations 
            due to flooding. 

0557 AM     Flood            4 SE Kipton             41.24N 82.25W
08/24/2023                   Lorain             OH   Dept of Highways 

            State Route 303 closed due to flooding 
            between Quarry Rd and Pitts Rd. 

0800 AM     Rain             Euclid                  41.59N 81.53W
08/24/2023  M3.10 inch       Cuyahoga           OH   Trained Spotter  

            Rainfall since noon 8/23. 

0941 AM     Rain             1 ESE Sandusky          41.45N 82.69W
08/24/2023  M5.53 inch       Erie               OH   Trained Spotter  

            24 hour rainfall. 

1218 PM     Rain             2 S Pemberville         41.39N 83.46W
08/24/2023  M3.73 inch       Wood               OH   NWS Employee     

            24 hour rainfall. 

0250 PM     Tstm Wnd Gst     4 NNW Bratenahl         41.62N 81.62W
08/24/2023  M43 MPH          LEZ146             OH   Mesonet          

            Mesonet station 45197 4 NNW Bratenahl. 

0301 PM     Tstm Wnd Dmg     3 SSE Parma             41.35N 81.72W
08/24/2023                   Cuyahoga           OH   Fire Dept/Rescue 

            North Royalton FD reported several tree 
            blown down and power lines blown down 
            between W Sprague Road and Bunker Road just 
            east of State Road 94. 

0308 PM     Tstm Wnd Dmg     2 S Parma               41.35N 81.72W
08/24/2023                   Cuyahoga           OH   Trained Spotter  

            Numerous trees down near State Rd and 
            Sprague Rd. 


&&

$$

Environment


Figure 1: WPC surface analysis at 8 PM on August 23, 2023. Note the presence of a warm front oriented roughly northwest to southeast across the Lower Great Lakes region.	Figure 2: Precipitable water values at 2 AM on August 24, 2023. Note PWAT values exceeding 2.0 inches across SE MI and NW OH.	Figure 3: Most unstable CAPE values at 2 AM on August 24, 2023. Note the extreme instability present across NW OH of 4500 to 5000 J/kg.


Figure 4: Low-level (925 to 850 mb) moisture transport vectors at 2 AM. Note the ample moisture being transported eastward across the Lower Great Lakes region, feeding the multiple rounds of convection.	Figure 5: NAEFS integrated water vapor transport (VIT) standard anomalies 42 hours leading up to the event. Note a localized area of 2 standard deviations across SE MI and northern OH.	Figure 6: ECMWF ensemble IVT standard anomalies 42 hours leading up to the event. Note the localized area of 2 standard deviations across SE MI and northern OH, though slightly less apparent versus the NAEFS.

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