Alert archive / Ohio / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 137, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at Jul 31, 1999, 5:20 PM EDT for Ashtabula County, Ohio; Erie County, Pennsylvania. It was in force for 65 min. 3 reports 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 31, 1999, 5:20 PM EDT (21:20 UTC)
- Expired
- Jul 31, 1999, 6:25 PM EDT
- In force
- 65 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
Counties Ashtabula County, OH, Erie County, PA
The radar
The Cleveland radar (KCLE), 136 km from the middle of the area, began a volume at 21:21 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 31, 5:30 PM EDT | Thunderstorm Wind | Countywide, PA | Trees and powers lines downed across the county. The city of Erie and surrounding areas were especially hard hit with several dozen trees downed. A van was crushed by a fallen tree on the west side of Erie and several homes nearby sustained minor damage from |
| Jul 31, 5:39 PM EDT | Thunderstorm Wind 53 | Erie Intl Arpt, PA | A 61 mph wind gust was measured at Erie International Airport. |
| Jul 31, 5:55 PM EDT | Thunderstorm Wind | Countywide, OH | Trees and power poles downed across the county with a 60 mph gust measured in Orwell. The library in Orwell lost some its siding and the Orwell Fire Department was damaged when fallen trees poked three 15 inch holes into its roof. Many trees were also downe |
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 31, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.3 hours before the alert went out and 175 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2312 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 31, 2:10 PM EDT, 3 hours 10 minutes earlier.
Area forecast discussion, Jul 31, 2:10 PM EDT, 3 hours 10 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CLEVELAND OH 210 PM EDT SAT JUL 31 1999 LATEST 88D DATA SHOWG LINE OF TSRA CONTG TO TAKE SHAPE OVR NERN IN AND SERN MI. TIMING OF THIS LINE WL BE MAIN FCST CHALLENGE THIS PACKAGE. EXTRAPOLATION PUTS CONVECTION INTO WRN END OF CWA ABOUT 20Z AND TO KCLE BY 23Z. VERY UNSTABLE ATMOSPHERE BUT WIND PROFILE AGN UNIDIRECTIONAL SO APPRS MAIN THREAT FM WNDS. WITH HI PWATS WL ALSO HV TO WATCH FOR HVY RNS BUT APPRS LN WL CONT TO MAKE GD PROGRESS. BEST Q-VECTOR CONV OVR FA ARND 06Z SO REDVLPMNT BHND INITIAL LN LIKELY AS SEEN ON KLOT 88D THIS AFT. NGM APPRS TOO AGGRESSIVE WITH FNT AND WL SIDE WITH SOMEWHAT SLOWER ETA SOL. AT FIRST..THOUGHT THERE MAY BE SUM LINGERING SHOWERS SUN AM NE ZNS BUT FOR NOW WL KEEP THINGS DRY. TEMPS BACK TO NR NORMAL SUN. WL USE FWC GUID AS LOW END OF FCST RANGES. SHOULD BE SUM ON BOTH MON AND TUE. WL LET HEAT ADVISORY DROP AS EXPCT TO MEET CRITERIA ONLY FOR AN HR OR TWO ERLY THIS EVE. .CLE...NONE. KUBINA
The office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 11:35 PM EDT | Severe Thunderstorm Warning | CLE | Huron | 65 min |
| Jul 31, 12:12 AM EDT | Severe Thunderstorm Warning | CLE | Ashland | 63 min |
| Jul 31, 12:17 AM EDT | Severe Thunderstorm Warning | CLE | Erie, Lorain | 63 min |
| Jul 31, 12:24 AM EDT | Severe Thunderstorm Warning | CLE | Medina, Wayne | 91 min |
| Jul 31, 12:43 AM EDT | Severe Thunderstorm Warning | CLE | Holmes | 67 min |
| Jul 31, 12:47 AM EDT | Severe Thunderstorm Warning | CLE | Huron | 48 min |
| Jul 31, 12:55 AM EDT | Flash Flood Warning | CLE | Erie, Huron | 110 min |
| Jul 31, 1:47 AM EDT | Severe Thunderstorm Warning | CLE | Lorain | 63 min |
| Jul 31, 2:03 AM EDT | Severe Thunderstorm Warning | CLE | Holmes | 67 min |
| Jul 31, 2:10 AM EDT | Flash Flood Warning | CLE | Holmes | 2 hr |
| Jul 31, 3:49 AM EDT | Severe Thunderstorm Warning | CLE | Lorain, Medina | 66 min |
| Jul 31, 4:58 PM EDT | Severe Thunderstorm Warning | CLE | Cuyahoga | 62 min |
| Jul 31, 5:01 PM EDT | Severe Thunderstorm Warning | CLE | Sandusky | 64 min |
| Jul 31, 5:12 PM EDT | Severe Thunderstorm Warning | CLE | Geauga, Lake | 63 min |
| Jul 31, 5:31 PM EDT | Severe Thunderstorm Warning | CLE | Trumbull | 59 min |
| Jul 31, 5:34 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 66 min |
| Jul 31, 5:49 PM EDT | Severe Thunderstorm Warning | CLE | Huron | 61 min |
| Jul 31, 5:58 PM EDT | Severe Thunderstorm Warning | CLE | Mahoning, Portage | 62 min |
| Jul 31, 6:02 PM EDT | Severe Thunderstorm Warning | CLE | Hancock | 63 min |
| Jul 31, 6:10 PM EDT | Severe Thunderstorm Warning | CLE | Lorain | 65 min |
| Jul 31, 6:17 PM EDT | Severe Thunderstorm Warning | CLE | Stark | 63 min |
| Jul 31, 6:30 PM EDT | Severe Thunderstorm Warning | CLE | Trumbull | 65 min |
| Jul 31, 6:41 PM EDT | Severe Thunderstorm Warning | CLE | Marion, Wyandot | 64 min |
| Jul 31, 6:49 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 61 min |
| Jul 31, 7:29 PM EDT | Severe Thunderstorm Warning | CLE | Richland | 66 min |
| Jul 31, 7:36 PM EDT | Severe Thunderstorm Warning | CLE | Portage, Summit, Wayne | 64 min |
| Jul 31, 7:51 PM EDT | Severe Thunderstorm Warning | CLE | Ashland | 49 min |
| Jul 31, 6:22 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 63 min |
Nearby
Severe Thunderstorm Warnings in Ohio, 1999Severe Thunderstorm Warnings in Pennsylvania, 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.