Alert archive / Ohio / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 123, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at Jul 29, 1999, 12:35 AM EDT for Mahoning County, Stark County, Ohio. It was in force for 65 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 29, 1999, 12:35 AM EDT (04:35 UTC)
- Expired
- Jul 29, 1999, 1:40 AM EDT
- In force
- 65 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
Counties Mahoning County, OH, Stark County, OH
The radar
The Pittsburgh radar (KPBZ), 84 km from the middle of the area, began a volume at 04:35 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 29, 12:44 AM EDT | Thunderstorm Wind | Youngstown, OH | Trees and power lines downed. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 28, 10:30 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 4.6 hours before the alert went out and 99 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
- 180 J/kg
- Mixed-layer CIN
- -196 J/kg
- Mixed-layer LCL
- 952 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 28, 8:55 PM EDT, 3 hours 40 minutes earlier.
Area forecast discussion, Jul 28, 8:55 PM EDT, 3 hours 40 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CLEVELAND OH 855 PM EDT WED JUL 28 1999 SPC WILL BE COMING OUT WITH A SEVERE STORM WATCH WATCH FOR AT LEAST THE OHIO COUNTIES. WILL ISSUE THE EVENING ZONE PACKAGE WHEN I ADD THE HEADLINES. WILL FOCUS ON THE STORMS OVERNIGHT WITH NO SIGNIFICANT CHANGES EXPECTED TO THE REMAINDER OF THE FORECAST. .CLE...NONE. KOSARIK
The office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 11:05 PM EDT | Severe Thunderstorm Warning | CLE | Cuyahoga, Lake | 60 min |
| Jul 28, 11:05 PM EDT | Severe Thunderstorm Warning | CLE | Ashtabula | 60 min |
| Jul 28, 11:31 PM EDT | Severe Thunderstorm Warning | CLE | Geauga | 59 min |
| Jul 28, 11:38 PM EDT | Severe Thunderstorm Warning | CLE | Lorain | 52 min |
| Jul 28, 11:51 PM EDT | Severe Thunderstorm Warning | CLE | Portage, Trumbull | 64 min |
| Jul 29, 12:02 AM EDT | Severe Thunderstorm Warning | CLE | Cuyahoga, Summit | 63 min |
| Jul 29, 12:05 AM EDT | Tornado Warning | CLE | Cuyahoga, Summit | 40 min |
Nearby
Severe Thunderstorm Warnings in Ohio, 1999Every severe thunderstorm warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.