Alert archive / Ohio / Tornado Watches in 2002
Tornado Watch 747
The Storm Prediction Center issued this tornado watch at Nov 10, 2002, 4:35 PM EST for 30 counties in Ohio. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 10, 2002, 4:35 PM EST (21:35 UTC)
- Expired
- Nov 10, 2002, 10:00 PM EST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 30 counties
Allen County, OH, Ashland County, OH, Auglaize County, OH, Crawford County, OH, Cuyahoga County, OH, Erie County, OH, Geauga County, OH, Hancock County, OH, Hardin County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Logan County, OH, Lorain County, OH, Marion County, OH, Medina County, OH, Morrow County, OH, Ottawa County, OH, Portage County, OH, Putnam County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Wayne County, OH, Wood County, OH, Wyandot County, OH
The radar
The Cleveland radar (KCLE), 117 km from the middle of the area, began a volume at 21:37 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
Warnings issued inside it
32 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 10, 4:38 PM EST | Tornado Warning | CLE | Lucas, Wood | 67 min |
| Nov 10, 4:46 PM EST | Severe Thunderstorm Warning | CLE | Marion | 59 min |
| Nov 10, 4:49 PM EST | Severe Thunderstorm Warning | CLE | Morrow | 56 min |
| Nov 10, 5:02 PM EST | Tornado Warning | CLE | Seneca | 28 min |
| Nov 10, 5:05 PM EST | Tornado Warning | CLE | Sandusky | 55 min |
| Nov 10, 5:08 PM EST | Tornado Warning | CLE | Marion | 67 min |
| Nov 10, 5:12 PM EST | Tornado Warning | CLE | Richland | 63 min |
| Nov 10, 5:17 PM EST | Severe Thunderstorm Warning | ILN | Hardin, Logan | 58 min |
| Nov 10, 5:18 PM EST | Tornado Warning | CLE | Ashland, Holmes | 42 min |
| Nov 10, 5:23 PM EST | Tornado Warning | CLE | Ottawa | 37 min |
| Nov 10, 5:30 PM EST | Tornado Warning | CLE | Crawford, Morrow | 45 min |
| Nov 10, 5:35 PM EST | Tornado Warning | CLE | Erie, Huron, Seneca | 55 min |
| Nov 10, 5:54 PM EST | Tornado Warning | CLE | Medina | 66 min |
| Nov 10, 6:00 PM EST | Tornado Warning | CLE | Ashland | 60 min |
| Nov 10, 6:03 PM EST | Tornado Warning | CLE | Holmes, Wayne | 57 min |
| Nov 10, 6:13 PM EST | Severe Thunderstorm Warning | CLE | Knox | 47 min |
| Nov 10, 6:16 PM EST | Severe Thunderstorm Warning | CLE | Lorain | 59 min |
| Nov 10, 6:19 PM EST | Severe Thunderstorm Warning | CLE | Richland | 56 min |
| Nov 10, 6:22 PM EST | Tornado Warning | CLE | Stark | 53 min |
| Nov 10, 6:26 PM EST | Severe Thunderstorm Warning | CLE | Cuyahoga | 64 min |
| Nov 10, 6:45 PM EST | Tornado Warning | CLE | Cuyahoga | 60 min |
| Nov 10, 6:56 PM EST | Tornado Warning | CLE | Portage | 49 min |
| Nov 10, 7:02 PM EST | Severe Thunderstorm Warning | CLE | Summit | 58 min |
| Nov 10, 7:11 PM EST | Tornado Warning | CLE | Mahoning, Trumbull | 64 min |
| Nov 10, 7:15 PM EST | Tornado Warning | CLE | Stark | 45 min |
| Nov 10, 7:18 PM EST | Severe Thunderstorm Warning | CLE | Geauga, Lake | 57 min |
| Nov 10, 7:25 PM EST | Severe Thunderstorm Warning | CLE | Holmes, Wayne | 65 min |
| Nov 10, 7:51 PM EST | Severe Thunderstorm Warning | CLE | Portage | 39 min |
| Nov 10, 7:58 PM EST | Tornado Warning | CLE | Stark | 47 min |
| Nov 10, 8:15 PM EST | Severe Thunderstorm Warning | CLE | Mahoning, Trumbull | 60 min |
| Nov 10, 8:46 PM EST | Severe Thunderstorm Warning | PBZ | Tuscarawas | 59 min |
| Nov 10, 9:01 PM EST | Severe Thunderstorm Warning | CLE | Stark | 29 min |
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.6 hours before the alert went out and 172 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
- 2 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 562 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 325 m²/s²
- 0-3 km storm-relative helicity
- 335 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 102134 SEL7 SPC WW 102135 OHZ000-LEZ000-110300- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 747 STORM PREDICTION CENTER NORMAN OK 435 PM EST SUN NOV 10 2002 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF NORTHERN OHIO SOUTHERN LAKE ERIE EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 435 PM UNTIL 1000 PM EST. TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 85 STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES SOUTHWEST OF MANSFIELD OHIO TO 20 MILES NORTHWEST OF CLEVELAND OHIO. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES SEVERE THUNDERSTORM WATCH NUMBER 744. WATCH NUMBER 744 WILL NOT BE IN EFFECT AFTER 435 PM EST. CONTINUE...WW 743...WW 745...WW 746... DISCUSSION...ISOLATED SUPERCELLS ARE DEVELOPING E OF THE SQUALL LINE IN NW OH. GIVEN THE STRONG VERTICAL SHEAR AND MODERATE INSTABILITY OVER NRN OH...SOME OF THESE STORMS MAY PRODUCE TORNADOES PRIOR TO AND AS THEY MERGE WITH THE SQUALL LINE. OTHERWISE... EXPECT DAMAGING WINDS AND ISOLATED LARGE HAIL WITH THE SQUALL LINE ITSELF. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR 24045. ...THOMPSON 413,0802 402,0813 402,0844 413,0834
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 10, 1:40 PM EST | Severe Thunderstorm Watch | SPC | Allen, Auglaize, Crawford, Defiance, Erie, Fulton and 18 more | 5 hr |
| Nov 10, 3:35 PM EST | Tornado Watch | SPC | Adams, Brown, Butler, Champaign, Clark, Clermont and 25 more | 6 hr |
| Nov 10, 5:50 PM EST | Tornado Watch | SPC | Athens, Gallia, Jackson, Lawrence, Meigs, Pike and 2 more | 5 hr |
| Nov 10, 6:45 PM EST | Tornado Watch | SPC | Belmont, Carroll, Columbiana, Harrison, Jefferson, Mahoning and 3 more | 5 hr |
Nearby
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; radar from the NEXRAD Level II archive.