Alert archive / New York / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 689
The Storm Prediction Center issued this severe thunderstorm watch at Aug 16, 1997, 11:00 AM EDT for 18 counties in New York; 18 counties in Pennsylvania. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 16, 1997, 11:00 AM EDT (15:00 UTC)
- Expired
- Aug 16, 1997, 5:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 36 counties
Allegany County, NY, Cattaraugus County, NY, Cayuga County, NY, Chautauqua County, NY, Chemung County, NY, Cortland County, NY, Erie County, NY, Genesee County, NY, Livingston County, NY, Onondaga County, NY, Ontario County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Wyoming County, NY, Yates County, NY, Bradford County, PA, Cameron County, PA, Clarion County, PA, Clinton County, PA, Crawford County, PA, Elk County, PA, Erie County, PA, Forest County, PA, Jefferson County, PA, Lycoming County, PA, McKean County, PA, Mercer County, PA, Potter County, PA, Sullivan County, PA, Tioga County, PA, Venango County, PA, Warren County, PA, Wyoming County, PA
The radar
The Buffalo radar (KBUF), 79 km from the middle of the area, began a volume at 15:01 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
23 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 11:18 AM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 57 min |
| Aug 16, 11:32 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 58 min |
| Aug 16, 11:39 AM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 66 min |
| Aug 16, 11:43 AM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 77 min |
| Aug 16, 12:08 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 67 min |
| Aug 16, 12:26 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 59 min |
| Aug 16, 12:28 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus | 62 min |
| Aug 16, 12:35 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 55 min |
| Aug 16, 12:37 PM EDT | Severe Thunderstorm Warning | PBZ | Forest | 68 min |
| Aug 16, 12:43 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 62 min |
| Aug 16, 12:48 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 57 min |
| Aug 16, 1:12 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Potter | 58 min |
| Aug 16, 1:38 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 52 min |
| Aug 16, 1:43 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 62 min |
| Aug 16, 1:43 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 62 min |
| Aug 16, 2:01 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 64 min |
| Aug 16, 2:13 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 62 min |
| Aug 16, 2:17 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 63 min |
| Aug 16, 2:41 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 64 min |
| Aug 16, 2:49 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wyoming | 71 min |
| Aug 16, 2:56 PM EDT | Tornado Warning | CTP | Sullivan | 49 min |
| Aug 16, 3:04 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Montour, Northumberland | 61 min |
| Aug 16, 3:04 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Union | 61 min |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 3.0 hours before the alert went out and 77 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
- 518 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 740 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.4
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | Bronx, Kings, Nassau, New York, Orange, Putnam and 5 more | 6 hr |
| Aug 16, 8:15 AM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie | 4 hr |
| Aug 16, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | Butler, Clarion, Crawford, Erie, Lawrence, Mercer and 1 more | 6 hr |
| Aug 16, 7:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 20 more | 5 hr |
Nearby
Severe Thunderstorm Watches in New York, 1997Severe Thunderstorm Watches in Pennsylvania, 1997Every severe thunderstorm watch in 1997
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.