Alert archive / Ohio / Special Weather Statements in 2018
Special Weather Statement, NWS Cleveland, OH
NWS Cleveland, OH issued this special weather statement at Jul 31, 2018, 9:12 PM EDT for 5 counties in Ohio. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 31, 2018, 9:12 PM EDT (01:12 UTC)
- Expired
- Jul 31, 2018, 10:15 PM EDT
- In force
- 63 min
- Issued by
- NWS Cleveland, OH
Counties Crawford County, OH, Hancock County, OH, Marion County, OH, Seneca County, OH, Wyandot County, OH
The radar
The Cleveland radar (KCLE), 143 km from the middle of the area, began a volume at 01:15 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.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.2 hours before the alert went out and 155 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
- 632 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 868 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.2
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cleveland, OH wrote its last area forecast discussion before this special weather statement went out at Jul 31, 9:12 PM EDT, 0 minutes earlier.
Area forecast discussion, Jul 31, 9:12 PM EDT, 0 minutes before
Area Forecast Discussion National Weather Service Cleveland OH 912 PM EDT Tue Jul 31 2018 ...Late Evening Near Term Forecast Update... .SYNOPSIS... An area of low pressure will move across western Ohio tonight before moving into southern Canada on Wednesday. This storm system will drag a cold front through the forecast area on Wednesday. && .NEAR TERM /THROUGH WEDNESDAY NIGHT/... We will be watching closely over the next several hours through midnight the broken line of showers and storms between I-71 and I-75 through the late evening. There a couple of strong to severe storms that are rotating and have produced at least one confirmed tornado at this time. That will be the focus area of our attention as these continue to move northeastward into our CWA. We cannot rule out an isolated short lived spin up tornado or damaging wind gusts with this broken line. One note to add, there will be very little to no lightning with these storms. Previous discussion... Low pressure will move northward across western Ohio tonight and slowly push a cold front across the forecast area on Wednesday. A large shield of precipitation is associated with the surface low and it has moved across the forecast area during the day. A dry slot has developed over north central Ohio and will continue to progress eastward this afternoon and evening. Showers and thunderstorms on the back side of the low pressure system will creep northeastward overnight. Thunderstorm development is also possible near the dry slot late this afternoon and evening. Shear levels are very high near the surface low. If thunderstorms do develop, they will have the potential to become severe. The cold front will slowly move across the forecast area on Wednesday and Wednesday night. This system will keep scattered showers and a few thunderstorms over the region. Guidance temperatures appear to be reasonable and there will be few adjustments. && .SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/... The cold front that is forecast to impact the region will have moved southeast out of the area by Thursday morning...with only the possibility of lingering showers across the far eastern counties. Otherwise...another upper trough will slowly move east...approaching western Ohio Thursday evening into Friday. This will allow for a few showers and maybe even a thunderstorm across the eastern counties. Upper level high pressure will begin to build northwest over the region on Saturday resulting in a warming trend. Temperatures on Saturday afternoon will be slightly above normal. && .LONG TERM /SATURDAY THROUGH TUESDAY/... Models coming into a little better agreement on the long term forecast. Broad flat ridge over the area at the upper levels with large surface high stretching from the SE across the Upper Ohio Valley. Expect above normal temps in the mid to upper 80s through the period. As for precip left low chance pops going during the day Monday. Better chance of convection on Tuesday. GFS tracks low across the Lower Great Lakes, while ECMWF tracks low across the Northern Lakes. But this far out will just go with low chance pops. && .AVIATION /00Z Wednesday THROUGH Sunday/... Scattered showers will continue to be around most TAF sites through the evening and overnight hours. A few isolated storms will also be possible and can't rule out isolated stronger convection mainly over central Ohio area. Ceilings will be a challenge with variable conditions from VFR to MVFR and maybe IFR as the upper level low/trough slowly moves across the region. With this TAF update, we will show that downward trend through the night into Wednesday morning. Scattered showers and isolated storms will also be around for Wednesday with mainly VFR condition outside of any showers and convection. Winds 5 to 10 knots will also be changeable through the next 24 to 30 hours with easterly to southeasterly shifting to southerly and eventually southwesterly as the surface low pressure moves over the area. OUTLOOK...Non-VFR possible in showers and thunderstorms into Thursday. && .MARINE... Quiet conditions on the lake through the remainder of the week. Low pressure across the Ohio valley will slowly move northward towards the lake by tonight. Easterly flow will increase through the day but should generally be less than 15 kts. As the low moves north of the lake overnight into Wednesday morning, winds will shift out of the south, becoming southwesterly during the morning. Flow will remain out of the southwest at 10 kts or less through the remainder of the week and weekend as high pressure builds across the region. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...None. PA...None. MARINE...None. && SYNOPSIS...Garnet NEAR TERM...Garnet/Griffin SHORT TERM...Riley LONG TERM...DJB AVIATION...Griffin MARINE...Riley
Hazardous weather outlook, Jul 31, 9:28 AM EDT, 11 hours 44 minutes before
Hazardous Weather Outlook National Weather Service Cleveland OH 928 AM EDT Tue Jul 31 2018 LEZ061-142>149-162>169-OHZ003-006>014-017>023-027>033-036>038-047- 089-PAZ001>003-011330- Lake Erie open waters from Ripley to Buffalo NY- Lake Erie nearshore waters from Maumee Bay to Reno Beach OH- Lake Erie nearshore waters from Reno Beach to The Islands OH- Lake Erie nearshore waters from The Islands to Vermilion OH- Lake Erie nearshore waters from Vermilion to Avon Point OH- Lake Erie nearshore waters from Avon Point to Willowick OH- Lake Erie nearshore waters from Willowick to Geneva-on-the Lake OH- Lake Erie nearshore waters from Geneva-on-the-Lake to Conneaut OH- Lake Erie nearshore waters from Conneaut OH to Ripley NY- Lake Erie open waters from Maumee Bay to Reno Beach OH- Lake Erie open waters from Reno Beach to The Islands OH- Lake Erie open waters from The Islands to Vermilion OH- Lake Erie open waters from Vermilion to Avon Point OH- Lake Erie open waters from Avon Point to Willowick OH- Lake Erie open waters from Willowick to Geneva-on-the-Lake OH- Lake Erie open waters from Geneva-on-the-Lake to Conneaut OH- Lake Erie open waters from Conneaut OH to Ripley NY-Lucas-Wood- Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Lake-Geauga-Ashtabula Inland- Hancock-Seneca-Huron-Medina-Summit-Portage-Trumbull-Wyandot-Crawford- Richland-Ashland-Wayne-Stark-Mahoning-Marion-Morrow-Holmes-Knox- Ashtabula Lakeshore-Northern Erie-Southern Erie- 928 AM EDT Tue Jul 31 2018 This Hazardous Weather Outlook is for Lake Erie, north central Ohio, northeast Ohio, northwest Ohio and northwest Pennsylvania. .DAY ONE...Today and Tonight. There is a marginal risk of severe weather for much of the area this afternoon and early this evening. The greatest threat will be damaging wind gusts. In addition there is a moderate risk for swimming hazards for all of the beaches except across the Ashtabula Lakeshore as well as northern Erie. A moderate risk of swimming hazards implies that large waves and dangerous currents are possible. Stay away from areas like piers...breakwalls...and river mouths where dangerous currents are possible. Always have a flotation device with you in the water. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. Riley
In the hours before
Special weather statement, Jul 31, 9:12 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Cleveland OH
912 PM EDT TUE JUL 31 2018
OHZ006-017-018-027-028-036-010215-
Crawford-Seneca-Wyandot-Marion-Wood-Hancock-
912 PM EDT TUE JUL 31 2018
...A BROKEN LINE OF SHOWERS WILL AFFECT SENECA...MARION...
WYANDOT...CRAWFORD...SOUTHEASTERN WOOD AND HANCOCK COUNTIES...
At 907 PM EDT, radar indicated a line of showers along a line
extending from south of Findlay to west of Columbus. Movement was
northeast at 25 mph. This line of showers with embedded
thunderstorms has a history of producing short lived tornadoes.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
LAT...LON 4116 8388 4117 8382 4119 8382 4125 8284
4092 8283 4065 8286 4064 8296 4049 8296
4048 8302 4043 8303 4044 8325 4051 8325
4051 8342 4068 8342 4071 8349 4082 8351
4082 8388
TIME...MOT...LOC 0107Z 233DEG 20KT 4090 8360 4067 8354 4040 8348 3997
8370
MullenThe office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 10:14 PM EDT | Tornado Warning | CLE | Marion | 46 min |
Nearby
Special Weather Statements in Ohio, 2018Every special weather statement in 2018
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.